DEMIN V.F., DEMINA T.V. ESTIMATE OF DAMAGE PARAMETERS IN DEVELOPMENT ENTRIES DEPENDING ON MINE-TECHNICAL AND OPERATION CONDITIONS
Deep-level mining and deterioration of mining conditions permanently complicate mining. Coal extraction is restrained by the neglect of mine operation conditions, or by inappropriate support and its mismatch with the mine-technical conditions. Comparative analysis of damage rate in the mines of the Coal Department yields the accident risk growth in the mines. The Coal Department has developed engineering provisions towards higher coal extraction capacity and lower coal production cost. One the ways of improving mine working conditions and cutting down material resources is the use of the duly substantiated support. Reliability of underground excavation support is narrowed due to insufficient study of geomechanical processes in the vicinity of mine workings. The authors think it is advisable to use steel-polymer rock bolts in complicated mining-and-geological and mine-technical conditions. Key words:
underground mining, rock bolting, factors, efficiency, studies, mining-and-geological and mine-technical conditions, process flow sheets, drivage, types of support, technical performance level.DANIYAROV N.A. STRUCTURAL CLASSIFICATION OF MECHANIZING METHODS AND MEANS FOR UNDERGROUND ORE MINE PROCESS FLOWS
The developed structural classification and analysis of mechanizing methods and means enable: ranking of multivarious self-propelled equipment designs by functional features; designating position and purpose of every machine inside the complex hierarchy of the industrial process, considering functional relations of equipment; selecting the most suitable functional chart under given operation conditions; and identifying further development policy for the mechanization means in terms of design and technology.
The structure of combinations of mechanizing means and methods for underground ore mining depends on mining-and-geological and mine-technical factors, organizational issues, types of equipment in operation, etc. The common condition for underground mine machine complexes is operation in the drilling-and-blasting affected environment.
From analysis, the key classification feature is the functional criterion that allows an ore mining process to be divided into operations, each representing nearly uniform activity and a virtually accomplished stage. Key words:
structural classification, mechanizing means, underground mining, mining alternatives.PROKOPOVA M.V. ABOUT THE CONDITION OF VERTICAL SHAFT COAL MINES DONBASS
The comparative analysis of data about a condition of vertical shaft of collieries of the Russian and Ukrainian Donbass is made. Results of the analysis of the mountain-geological conditions which are becoming complicated with increase of depth of development of a mineral are presented. The reasons of infringement set and reinforcement trunks are revealed. The basic directions of perfection of schemes and ways of reconstruction of shafts are certain.
By the research data of the State Research Institute of Organization and Mechanization of Mine Construction, amount of shafts with damaged support and armoring grows in mines of Donbass.
The article presents the curves of the stability criteria, depth and calculated compression strength for mine shafts located beyond aquifers and zones of influence of stopes in flat dipping deposits.
The data analysis yields basic causes of damage of the support and armoring in vertical mine shafts. As mining goes to deeper level, impairment of mine shaft support and armoring worsen as the host rock stability decreases and mining-and-geological conditions complicate (increased ground pressures, higher water inflow). It is therefore urgent to design and improve reconditioning schemes and methods for vertical shafts. Key words:
vertical shaft, set, reinforcement, reconstruction.TURTIGINANA N.A. INVESTIGATION OF THE PROCESS OF SEGREGATION OF POOR COPPER-NICKEL ORES
The article is written in result of the implementation of the special industrial research of ore-flow at the Zapolyarny mine, on the basis of design data the estimation of the state of technological variability poor quality copper-nickel ores and revealed phenomenon texture segregation of ore quality.Key words:
terms: Ore, quality, segregation, composition, mineOpen-cast
KHRUNINA N.P., PODSHIVALOV V.S., BOGOMYKOV R.V. SANDS OF CLAYEY OF ALLUVIAL GOLD OF KOLCHAN FIELD RESEARCH
Results research of the sands of clayey which allow to appraise to opportunity theirs disintegration of not traditional methods are shown. The sands have the parts with very complicate for destruction clayey, which couldn't be disintegration with the help of known technologies are determined.
Based on the experimental data and calculated Lame constants and particle velocity amplitudes in waves, the author obtains the values of elastic oscillation intensity I  (at initial moment) to be sufficient to maintain relative strain |S|=10-4
in placer gold for gold disintegration.
The research findings on physico-mechanical properties, grain size and fractional composition of the Kolchan placer gold showed that all samples had increased content (from 42.2 to 47.1%) of fine-dispersed clay particles (under 5 µm).
It has been found advisable to intensify the placer gold disintegration by additional wave treatment, especially on site no. 2. The rational parameters of the elastic oscillation intensity are defined at the early stage wave treatment of placer gold.Key words:
disintegration, humidity, resistance of wave, intensity.Enrichment of minerals
KLYKOV YU.G., GURIEV T.S. EFFECT OF GRAIN SIZE COMPOSITION OF GROUND MATERIAL ON ENERGY PARAMETERS OF THE MATERIAL DISINTEGRATION
The curves of the ground material size, particle specific surface and grinding energy demand are analyzed.
Energy necessary to produce partial yield of each size, either “plus” or “minus,” is found.
The first case estimation was aimed at energy spent to crush all coarse sizes of original material to produce one fine size of end product.
In the second case, energy spent for crushing one large size of original material to obtain all fine sizes of end product was determined.
The found partial energies are the components of the total energy; their analysis yields distribution of disintegration energy.
The study source data are the data of experimental grinding of quartz and complex ore in centrifugal mills.
The developed software program allows evaluation of the specific surface increment for each size grade particles and the specific surface for each size grade of the original material and end product at energy consumption minimum. Key words:
grinding, grain size composition, deformation, energy consumption.KOZLOV V.A., NOVAK V.I., PIKALOV M.F. LARGE-DIAMETER DENSE-MEDIUM HYDROCYCLONE OPERATION MODELING
The article reviews the results of large-diameter dense-medium hydrocyclone operation modeling in the framework of the Australia Coal Association Research Program (ACARP) and Australia Research Council (ARC) in 2008—2010.
The studies show that small-diameter, 610—760 mm, hydrocyclones are more effective in separation of coal particles of small size, down to 0.25 mm. Therefore, the authors  describe a concept of simple approach to simultaneous increase in output and efficiency of hydrocyclones by combining hydrocyclones of large and small diameter.
The fundamental approach to modeling hydrocyclone operation assumes correct understanding of dense-medium cyclone (DMC) operation, overcoming of difficulties, and accurate measurement of its operation parameters.
The discussed project involved over 100 alternative models, each for different set of geometry and operation conditions for DMC. As a result, using the databases, the multivariate model has been developed and produced simplified relations of the geometry and operation parameters.
The studies point out that high output and high efficiency of medium density separation in hydrocyclones are the mutually exclusive characteristics. In any case, it is feasible to gain from the high output and efficiency of hydrocyclones by combining large-size DMC for coarse particles and small-diameter DMC for fine particles. Key words:
coal preparation, dense-medium hydrocyclone, coal grain size, separation density, separation error.MISHURINA O.A., MEDYANIK N.L. ELECTROFLOTATION EXTRACTION OF MANGANESE FROM THE HYDRO-TECHNOLOGICAL RESOURCES OF THE MINING WORKS
The article is devoted to an urgent problem of the working out of saving resources technology of manganese containing hydro-mineral resources processing. Here are given the results of investigations of electroflotation extraction of manganese dispersed phase Mn (III,IV) from the technical mortars.
The analytical examination of acid mine water at mining-and-processing works located in the southern Urals showed high content of copper, zinc, and iron, as well as high content of Mn (II) ions, which allowed assuming the acid mine water the mine-generated source of manganese compounds. Currently, it is urgent to find alternative sources of different manganese compounds widely used in metallurgical and other industries in Russia.
The present article, based on the quantitative anion composition of acid mine water, proposes to extract Mn (II) from the waters using the combination of two electrochemical methods-electric coagulation and electric flotation. The fusion of the sedimentation-flotation processes will yield high figures of manganese extraction from acid water in the form of salable product.
Based on the theoretical and experimental research, the process flow sheet of selective manganese extraction from process water of mining-and-processing integrated works has been developed and approved in terms of dump water of the Buribaevsky MPIW JSC. Scaled-up laboratory tests of the three basic stages of the flow sheet, namely, casehardening, acid-base sedimentation and electric flotation, allowed finding optimum parameters of selective extraction of copper, iron and manganese from acid dump water. Key words:
resources technology, manganese, electroflotation extraction, parameters process.NESTEROV YU.V., FILIPPOV A.P. URANIUM LEACHING USING SULFUR DIOXIDE
The authors discuss the method of improvement of uranium extraction and its leaching intensification.
Towards higher silver extraction during heap leaching, it was suggested  to pre-remove manganese by treating ore by SO2
may also work as an oxidizer: in terms of the autoclave leaching of the Filizchaisky deposit pyrrhotine ore, it has been illustrated how oxygen can be replaced by SO2
as the sulfide sulfur oxidizer.
It is a promising way to use mixtures of SO2
(in the form of atmospheric oxygen) as an oxidizer for hydrometallurgical uranium, especially in heap and underground sulfuric-acid leaching of uranium with participation of variable valency metal ions as accelerating agents.
For the efficient sulfuric-acid leaching of four-valency uranium as well as nonferrous and noble metals from sulfide raw material using ferric iron as oxidizer, it seems expedient to regenerate it in the reusable leaching solutions.
The tests of the heap and underground uranium leaching showed that when the solution with рН = 2.0 and Fe (II) concentration of 1.0 g/l was treated by air–gas mixture with SO2
content of 2% under room temperature, Fe2+
oxidized to Fe3+
with the related rise in the redox potential Eh and increase in the acidity of the solution.
Oxidation of Fe2+
with the help of SO2
and air mixtures is the promising way of comprehensive uranium extraction and leaching.Key words:
uranium extraction, leaching, oxidation, sulfide raw material, ferric iron.HANTURGAEVA G.I., STYAZHKINA E.N. THERMOCHEMICAL PROCESSING OF MOLYBDENUM CONCENTRATE
Results of electrothermic segregation smelting of low grade molybdenum concentrates with sodium sulfate are presented. It is shown that in the conditions of segregation smelting practically all molybdenum and tungsten selectively concentrate in a salt phase that allows with sufficient efficiency to carry out processing of low grade molybdenum concentrates.
The study focuses on low-quality molybdenum concentrates (LMC) of rough and recleaner flotation of rebellious molybdenum ore extracted in the southern wing of the Malo-Oinogorsky deposit (standard mining technology).
The tests of the ore preparability showed low flotation capacity, especially at the finishing stage.
It is possible to shorten the process of metal recovery from LMC and intermediate products, reduce the processed material amount and increase extraction using the combined technology of preliminary flotation to produce LMC with high molybdenum content and then thermochemical concentration with liquation of liquid melts.
Liquation melting is the process stage that, although metallurgical, belongs in chemical beneficiation: nearly finished products are obtained within single operation. Key words:
electrothermic smelting, segregation smelting, molybdenum concentrate, sodium sulfate, molybdenum trisulphide, tungsten acid.KHRULEV A.S., PERFILEVA M.A. CALCULATION OF AIRLIFT IN HYDRAULIC BOREHOLE MINERAL MINING
The authors compare the experimental airlift data with the airlift calculations by Geier’s formula, by energy balance and from the derived empirical relation.
The calculated airlift parameters are compared with the airlift characteristics and parameters from large amount of experimental data obtained either in laboratory or in field hydraulic borehole mining of phosphorite, construction-sand and gold placers.
The calculation of airlift parameters by the energy balance inside and outside airlift allows taking into account design of an airlift tool and the lifting conditions.
The required airlift capacity is provided by varying air consumption, airlift pipe diameter and drowning ratio when washing-out is implemented in weak-permeable rocks such as permafrost sandstone formations.
The derived empirical relation for the airlift with a short suction nose-piece enables simplified calculation of the airlift parameters and yields the results close to the experimental data and the estimates by the energy balance. Key words:
hydraulic borehole mineral mining, airlift.KULIKOVA E.YU. MAKING OF ADMINISTRATIVE DECISIONS IN THE FIELD OF SAFETY OF UNDERGROUND BUILDING
Administrative decisions in the field of safety of underground building are conducted on three system levels – conceptually-operative, operative and tactical. An important role in making management decision belongs to the correct model resolution of the problem situation, including problems, united by a common purpose.
This model is a combination of verbal and formal modeling tasks of hazard (problem) situation, the solution of which provides a selection of the best technological solutions for the development of underground space.Key words:
safety, underground building, emergency (problem) situation, administrative decision.AINBINDER I.I., OVCHARENKO O.V., PATSKEVICH P.G. GEOMECHANICAL RESEARCHES OF THE STRESS-STRAIN STATE OF THE ROCK MASS AND ITS DEVELOPMENT DURING THE MINING OF KIMBERLITE PIPE INTERNATIONAL
The article contains the results of finite element researches of the stress-strain state of the rock mass and its development during the mining of kimberlites of pipe International and recommended probable variant of the mining technology.
It is shown that with this mining method, under high horizontal stresses that initiate zones of hazardous vertical tensile strains reaching limit values and causing stratification and collapse of ore and backfill mass, it is impossible to ensure safe mining, even under tightened requirements on the backfill mass strength and stability.
The author proposes a mining method alternative with the high capacity chamber mining and extraction output comparable with the slicing system performance. Key words:
kimberlite pipe, stopping, stress-strain state, numerical modeling.
In chronological aspect considered finds the discovery, knowledge, terminology and usage in different spheres of varieties of the mineral corundum. Illustrates the close relationship mastering ordinary and noble corundum with the material and aesthetic evolution of mankind.Key words:
gemology, corundum, ruby, sapphire, terminology, chronology, the history of mankind, technology.NIKIFOROVA A.I., SANFIROV I.A., KALASHNIKOVA M.M. REGIONAL ASSESSMENT OF THE UPPER KAMA MINE FIELDS COMPLEXITY SEISMOGEOLOGICAL STRUCTURE
Geological complications of evaporite sections, which caused disastrous, genetically related to the anomal structure enclosing sedimentary layers. Previous studies have found that one of the probable reasons of the "disturbed" areas formation is the influence of the underlying reef massifs. Probably the geological basis revealed regularities is the differentiation process of the bottom relief salt-origin basin due to unequal ability to postsedimentary compaction of the underlying rocks different genesis and lithology.
The influence of reef structures to the potash accumulation features is analyzed for Upper Kama deposit. Formation of weak zones in the salt series installed direct (well drilling, testing) and remote (seismic surveys, geochemical sampling) studies. The possibility of such sites presence is justified by mathematical modeling. Negative changes in the structure of potash accumulation consist in replacing rock salt producing formations, reducing their thickness and the content of useful components. In the areas of mine fields, located above the organogenic buildings, marked reduction in service life of mine workings, which is caused, apparently, a decrease of rock strength. When drilling wells in the circuit reef massif increases the likelihood of gas shows. According to the geomechanical calculations presence reef mass makes changes in the values of all operating stresses. There is increased concentration of the wave field complications in the range of the salt stratum to "reef" areas of the mine fields compared with "no reef". When profiles cross not only descent part, but the reef itself the percentage of anomalies in the reef contour compared to the rest area of the mine field is greatly increased.
Regional assessment of the mine fields structure, territorial superposed with a reef arrays is based on the analysis of data about the features structure of the saliferous complex, derived from drilling and shallow seismic studies. There is an increasing of negative changes P1 ir sediments with increasing reefs sizes. Negative changes are considered as consedimentation and postsedimentation nature. Intense negative changes in the internal structure and composition of the salt stratum are confined not only to the descents, but also to the central parts of the reef massifs represented by the crown and reef platform facies.Key words:
Upper Kama potash deposit, reef, facies, lithology, seismic, gas shows, mathematical modeling, adverse changes.Mining machinery, equipment and transport
BOLOBOV V.I., BATALOV A.P., BOYTSOV YU.P., BOCHKOV V.S. CONCERNING THE POSSIBILITY OF INCREASING DURABILITY LININGS OF BALL MILLS
High-manganese steel 110G13L, or the Hadfield steel, is widely used in manufacture of mining equipment parts meant for operation in the severe abrasive wear conditions (inner lining of ball mills, jaws of jaw mills, teeth of shovel buckets).
The article considers quality of cold work hardening of 110G13L steel inner lining of a ball mill without rock feed, when grinding bodies attack directly the lining plate. The rational parameters of mill operation for the cold work hardening to be efficient are found. The dynamic hardness Нd of steel is calculated based on the steel hardness under static impression of a ball.
The calculation of ball fall velocity at the time of the lining collision, V, uses the equation of free fall of a ball thrown at an angle relative to horizon, from the highest point of the ball trajectory, H, up to the ball and lining collision point. The time of the coal work hardening of the ball mill inner lining is calculated, too.
The calculation of time for the 20-fold attack of the total inner lining surface supposes that only the outward layer balls deliver effective blows, and inward layer balls collide with the lying balls.
The ball mill life period between the coal work hardening stages is evaluated. It is proved that for the increased life (1.9 times) of the Hadfield steel inner lining plates, it is required to carry out cyclic strengthening treatment (during 12 min) of inner lining by balls with the strengthening cycle duration for 27 days.
Taking a ball mill with a central discharge (type: MBC-4500×6000) operating without rocks as an example it is shown that a bombardment of the lining by grinding bodies made of steel 110G13L directly is capable to raise its hardness from 200 to 325HB at the depth of the cold-hardened layer up to 7 mm that will approximately 2 times increase its firmness to an abrasion .The time needed for the realization of an effective bombardment is 12 minutes, the period between strengthening cold - work hardenings is 27 days.Key words:
lining of a ball mill, Hadfield’s steel, cold hardening, hardness, wear resistance.SERGEEV V.V. ON THE HOLES LOCALIZATION IN THE AERATORS OF VARIOUS TYPES FOR THE PNEUMOTRANSPORT MACHINES
The methodics of the holes localization determination on the aerators surface of the chamber-type pneumotransport machine is presented.
The calculation is aimed at finding diameters of circular pattern of hole rows. In one case, total surface area of aerator is split onto equal areas, and the number of the areas is equal to the number of the hole rows. In the other case, the flattened cone volume is divided into equal volumes, and the number of the volumes is equal to the number of the hole rows. The number of holes is the same per row, based on that areas and volumes affected by air flows from the aerator holes are the same for each hole row.
The number of holes in each row, to meet the requirement of uniform distribution of holes over the surface of aerator, so that each hole affects equal area of false bottom or equal volume of material on application of tube aerators arranged along the axis of a chamber, can be determined and allotted in proportion to the diameters or perimeters of circles the holes are arranged in. Key words:
pneumochamber pump, chamber pneumocharger, flat false bottom aerator, tube aerator on the chamber conic bottom surface, friable materials, granulated explosives, cement pneumogun, guniting of the underground workings, the underground working concrete roofing.BAYBAKOVA T.V. COMPLEX INTERPRETATION OF SHALLOW SEISMIC DATA IN COMPLICATED MINE AND GEOLOGICAL CONDITIONS
The main causes of emergencies, that have arisen in the major potash basins in Germany and Canada, associated with the lack of information about the mining fields geological structure features.
One of the most significant emergencies consequences on potash mines is the formation of the earth's surface caves. The main reasons of their forming consist in intensification of technogenic salt processes.
One of the most informative geophysical methods at the study of such processes is the common depth point method seismic survey. During interpretation the complex analysis of the following wave field components: amplitude, effective velocity, frequency and signal/noise ratio is more informative. The informative estimation of the used field attributes allows to define the local inhomogeneities boundaries.
In this article the example of implementation in seismic researches practice of similar complex interpretation methodology with the wave attributes quantitative estimation in solving technogenic salt karst development control problems is considered. The object is interesting in that at the moment there is the earth's surface subsidence and monitoring seismic surveys can observe the development of salt karst in real time. All accumulated material is executed as space-time diagrams of complex parameter, that represent his changes on a profile throughout the cycle of observations.Key words:
dynamic and kinematic characteristics, complex interpretation, salt karst, complex parameter, seismic attribute informative, space-time estimation. CHUGAEV A.V. QUALITY ESTIMATION CRITERIA OF UNDERMINED TERRITORY MONITORING BY SURFACE WAVES
Because of downfall incidents on Verhnekamskoe potash deposit there were defined most hazardous places. In this places are held different types of monitoring, including seismic. To estimate measured changes significance one must define criteria that allow indicate presence of changes in physical-mechanical properties of studied rock-mass interval.
There were held analysis of measurement series, get in the process of surface waves monitoring studies on mine field hazardous area of flooded pit. Three-dimensional data massive containing S waves velocities analyzed with different approaches: 1. Integral estimation of single survey, for example velocity value median all through the line with next chart plot. Defining velocity median in particular zones, which helps to control most dangerous areas. 2. Partitioning of massive V(x,h,t) to one-dimensional curves set Vx,h=f(t), each curve linear approximation, and plotting standard deviation distribution by cross-section. This distribution allows revealing areas with most unstable definition of measured parameter. 3. Linear approximation of each curve Vx,h=f(t), defining slope coefficient kx,h and plotting distribution k(x,h). This allows marking out zones with most intensive changes of velocities in cross-plot. 4. Averaging velocities by h coordinate and plotting space-time diagram V(x,t). This way also may be used averaging velocities in defined depth interval and plotting diagrams of layerwise velocities changes.
Complex of introduced methods allows making a decision about time dependent changing of velocities in rock massive shallow part, what indicates by-turn presence of negative processes weakening massif strength properties. Besides of solving main task of the research there were defined connection between level of subsoil water and value of S wave velocities, coupling coefficient empirically determined.
Key words: Multiwave seismic, geophysical control, reflective waves, surface waves, monitoring, anthropogenic disaster, mining safety, statistical analysis.VYSKREBENETS A.S., KIBIZOV S.G. COAL PREPARATION IN CENTRIFUGAL CRUSHING–GRINDING UNITS
The article deals with the preparation of pulverized coal in rotary crushing and grinding plants. Depending on the required subtlety crushing recommended the preparation of various schemes with the use of crushing and shredding plants, vibratory mill and ball mill drum.
Crushing and grinding equipment that is now in use features high power consumption, high metal loss due to wear of active parts, contamination of ground product with metal chips and low efficiency, which amounts to a few percent in mills.
Centrifugal crushing–grinding units based on the dynamic self-grinding principle combine crushing and grinding processes in the same machine.
Two process flow sheets are offered to prepare pulverized coal depending on the fineness of grinding of the finished product. Coarse grinding can use a ball drum mill at the second milling stage, or a crushing–grinding unit in the complete cycle with separator. The parallel working area arranged between the bowl and adjust ring of the crushing–grinding unit allows size grading of the product, which is important for the fuel combustion efficiency. Key words:
crushing, grinding, minerals, coal fuel.GALIN I.A. KINEMATICS OF DUAL-CHANNEL BELT SCALE
The article describes kinematics of duel-channel belt scale meant for enhanced accuracy weighing of conveyed granular material. The accuracy is reached from selection of rational designs of the belt scale buckets and indirect calibration and checking of belt scales, which is an alternative method as against direct load weighing on reference fixed weighing machines scarcely used by the modern-day industry.
Apart from easy and prompt indirect calibration and checking, the duel-channel belt scale kinematics features simple design and assembly with the help of single idler as compared to dual idler conveyor scale on the common weighing platform.
It is not everywhere possible to install multi idler belt scale, due to tight work area, especially in enclosed space. Analysis of kinematics of any number idler belt scale should take into account systematic inaccuracy of the scale, that will govern the reference load weight. Key words:
belt scale, scale bucket, conveyor belt, idler.GORLOV I.V., POLETAEVA E.V. ANALYSIS OF CONDITION TECHNOLOGICAL OBJECT ON THE BASIS OF STRUCTURAL MODEL
Creation of a control system by state of technological elements depending on specific conditions of operation on the basis of the analysis of object’s structural model and parametrical optimization of the components which are responsible for working capacity is one of actual directions of peat cars using efficiency increasing.
Information collecting and processing on a diagnosing object condition, based on assembly units and details shortcoming identification limiting an operating time to repair provide the process’ objective component of working capacity maintenance.
For information system of working capacity maintenance realization the object model with consistently connected elements which refusal leads to refusal of all system is constructed.Key words:
the restoration, repair, diagnostics, algorithm, information technology, technical condition, structural models.ZHETESOV S.S., ZHETESOVA G.S., ABDUGALIEVA G.B., YURCHENKO V.V., MULKASHEV E.K. WATER CLARIFICATION AND QUALITY IMPROVEMENT EQUIPMENT FOR MINING TOWNS
The article deals with the issues of design and manufacture of equipment for water clarification and quality improvement in mining towns.
Many-years research work at the Karaganda State Technical University has resulted in the development of the water clarification and quality improvement facility based on the methods of physicochemical treatment of coal beds. The working medium is porous-solid activated carbon obtained from carbofossils or charcoal under fat wood removal or charring of polymers and used as the adsorbent. The project implementation will meet requirements of drink water supply at a rate of 5 l/min. Key words:
water clarification and quality improvement, mining town, distiller, physicochemical treatment of coal beds.ZHETESOV S.S., ZHETESOVA G.S., ABDUGALIEVA G.B., YURCHENKO V.V. DEVELOPMENT AND INTRODUCTION OF ALTERNATIVE ELECTRIC ENERGY SOURCES FOR MINING TOWNS WITH POPULATION OF 1000 AND ABOVE
The article focuses on development and introduction of alternative energy supply of mining towns with population of 1000 and above.
The novelty of the research project is the use of the hydrostatic pressure of water fall from the height of 10 m and higher in the turbine installations of the type of the Kaplan turbine or other new systems.
The research result is the design of alternative energy sources for remote mining towns.
To implement the project staff of the Military Technical Laboratory. First President of the Republic of Kazakhstan proposed Pond and lake-depth mini-hydro. EFFECT - ecological safety of the plant design, the absence of adverse effects on water quality, the use in small natural and artificial reservoirs without water flow.Key words:
alternative energy source, lake and deep-water mini or nano hydropower installation. ZHETESOV S.S., ZHETESOVA G.S., MALIBAEV N.S., ABDUGALIEVA G.B., JOLDIBAEVA G.S., YURCHENKO V.V., KULMAGAMBETOV E.M. ANALYSIS OF OPERATING REGIME IN PRODUCTION HEADINGS EQUIPPED WITH THE KAM-TYPE AUTOMATED STOPING MACHINE COMPLEX, THE NEW TECHNOLOGY EFFICIENCY AND FIELD OF USE
The article considers organization of broken coal flow from a mechanized production face with a new top-coal gravity flow technology using an automated stoping machine complex of the type of KAM.
A key criterion of any stoping machine efficiency, including the KAM-type machine complexes, is the ma-chine capacity depending on its design and operation parameters, utilization factor and appli¬cation conditions.
The author determines technological capabilities and working capacity of the stoping machine complex and production method, considering downtimes. Key words:
gravity flow technology, efficiency, mechanized stoping machine complex.KRASNIKOV V.D., SHCHERBA T.P. AN ANALYSIS OF A THEORETICAL PERFORMANCE OF A SHEARER BY MINING OF SILVINIT
The article analyzes a theoretical average efficiency of a shearer. It is determined by a weighted average torque developed by an electric motor and a weighted average specific power consumption. A weighted average torque developed by an electric motor and average specific energy depends strongly on the gear transmission drive of a cutting drum.
The presented graphs plotted at various mathematical expectations of seam cutting resistance show that the values of rational transmission number and weighted mean capacity of a cutter–loader of the type of KSH3M drastically depend on the seam cutting resistance.
Out of basic design parameters of auger-type effectors, the number of cutters in a cutting row is very important. In order to estimate the influence exerted by this parameter on the weighted mean capacity and the rational transmission number of the cutter–loader effector drive, the relations of the weighted mean cutter–loader capacity and the effector drive transmission number are obtained for the KSH3M cutter–loader equipped with double spiral vane drum (two cutters in cutting line) and triple spiral vane drum (three cutters in cutting line).
Analysis of the obtained relations yields that no shift in the rational transmission number takes place on the change in the variation factor. At lower variation factors, the increment in the weighted mean capacity of the cutter–loader due to the change in the transmission number is more pronounced. Key words:
Longwall shearer, capacity, thickness of a seam, cutting drum, web depth, power and gear drive, energy costs, destruction of rock mass, resistance to cutting. MAKAROV N.V. APERTURE ANGLE OF THE EQUIVALENT FAN DIFFUSER FOR THE RADIAL IMPELLER BLADE CHANNEL
The whirlwind-sourses modelling as system of the distributed drains, has allowed to specify the formula for calculation of a disclosing corner equivalent diffusor between-blades channel of the driving wheel centrifugal fan f. It is proved, that decrease in an effective corner of the disclosing caused by interaction high-energy stream whirlwind-sourses with the basic current in diffusor on an exit from it. It allows to increase a disclosing corner between-blades the driving wheel channel, keeping thus a continuous flow and as result, the pressure developed by the fan is essential to raise.
The analyzed method of the equivalent diffuser shows losses in blade channel only under throttable operational mode of fan, when the impinging angle exceeds its optimum value.
Based on the equivalent diffuser calculation procedure, the radial aerodynamic configuration Ts145-20 with integrated vorticity sources has been synthesized, and the gas suction fan VTsG-7A impeller with vortex chambers at lips of the fan blades has been designed. The static fan pressure of VTsG-7A is 25% higher than the fan VTsG-7M has at the same maximum efficiency. Key words:
equivalent diffuser, disclosing corner, circulation, effective area, vortical chamber.MALAKHOV V.A., GALKIN A.V. KEY MEASURES OF SERVICE PROPERTIES OF GREASE LUBRICANTS FOR MINE BELT CONVEYOR CARRYING ROLLERS
In this article the necessity of clarifying the coefficients used in calculation the resistance movement and to determine the reliability of the roll set belt conveyors, for modern greases produced by domestic and foreign industry.
The analysis of experimental test data on roller belt travel resistance force components showed that the travel resistance force was affected by bearing box charge with lubricant, seal design and ambient temperature. A series of roller designs with bearing boxes using different grease lubricants BNZ-3, BNZ-3M (cold-resistant) and others were tested.
Having processed the test data using the mathematical statistics method, the relation for roller spinning resistance force was derived. The calculation of durability of bearing boxes using oil with kinematic viscosity ν ≥ 12 сСт at nDo ≥ 10000 under working temperature is recommended to perform with taking into account conditions required for oil film formation on the contact surface of rolling bodies and roller paths, in accord with elastodynamic lubrication theory.
The author describes key measures of service properties of grease lubricants now in use in the domestic and foreign industry. Grease lubricant service properties are grouped into strength properties (shear strength, mechanical stability, colloid stability, wear resistance), temperature properties (temperature stability, drop temperature) and chemical properties (chemical stability).
Comparative analysis of grease lubricant market (Russian manufacture and foreign analogs) is performed.
It is assigned to choose some domestic and foreign manufacture grease lubricants and, on this basis, to test coefficients included in estimation of travel resistance force and reliability of belt conveyor carrying rollers.MALYBAEV S.K., KHAIBULLIN R.R., BALABAEV O.P. FINDING RATIONAL DESIGN OF BELT BEND PULLEYS FOR MINE CONVEYOR CARRYING SIDE
The developed calculation methods for strength of bend pulleys on belt carrying side make it possible to select rational geometry parameters of the bend pulleys, at sufficient safety factor, with the aim to ensure fault-free performance of mine belt conveyor drives.
The new-proposed method of enforcement of the bend pulley structure by installation of V strengthening ring abates stress–strain state of sidewalls.
From theoretical research, the calculation of total load on a bend pulley should take into account dynamic force of belt deformation on middle idler and on side surfaces, as well as the generalized force of a unit load element.
Actual calculation of bend pulley strength must account for sudden unforeseen load using the load increment coefficient to make the calculation more accurate. Key words:
bend pulleys, mine belt conveyor, mines.MULUHOV K.K., BESLEKOEVA Z.N. YNTHESIS MECHANISM CONTROL PRESSING MEMBER STEEPLY INCLINED BELT WHEEL CONVEYOR GOODS FOR LUMPY
Considered improved design steeply inclined conveyor lift , in the role of co- torus additional pinch belts operate free from the burden of the most lateral portions of the load-bearing belt and clamping levers interact with them without bindings , forming the free edges of the lap joints layer load. Such changes greatly simplify construction - tion due to the exclusion of corrugated ribbons and pressing numerous anchorages of these belts is screwed to the supports, and the edges of the pressing levers.
The structural and kinematic synthesis control mechanism clamping levers conveyor. Control mechanism consists of a conical transmission spring driving the rotary arm with casters and the planar follower guide. Control mechanism in this case represents an inverted cam mechanism. Based on the study of the mechanism developed by the method of calculation and design of the basic elements of management mechanism clamping levers. Implementation of the proposed pipeline could have a significant economic impact, especially in the development of deep pits due to reductions in capital mining operations and exclude secondary crushing of rocks and ores.Key words:
belt conveyor wheel control mechanism clamping levers Ku lachkovy mechanism.OSTANOVSKY A.A. THE EBGP-1 DRILL-BASED ADAPTIVE ROTATION DRILLING MACHINE
The author indicates shortcomings of existing drills and proposes the patented adaptive drilling machine design and operation principles. The base line and new version drilling machines are characterized.
The new engineering solution implemented is autoregulation of EBGP-1 drill, i.e., the drill rod antitorque moment changes against the change in the pulldown and the rotational torque overshoot results in automatic decrease in the pulldown.
The control system modification due to the adaptive unit introduced enables variation in the drill rod pulldown depending on the rotational torque.
At the adaptive drilling machine design stage, the base line and new version equipment have been compared.
It is scheduled to test EBGP-1 drill in mine conditions in order to prove serviceability of the proposed drilling machine design and to obtain data required for more exact description of the adaptive drilling process as well as for the comparison with standard drills operating under analogous conditions. Key words:
Drilling machines, drill rod, electrohydraulic rock crusher. RUSSKY E.YU., KRASYUK A.M. PERTURBING EFFECT OF AIR FLOW ON STRESS-STRAIN STATE OF MAIN FAN ROTOR DETAILS
The authors analyze axial fan rotor design, estimate perturbation air flow parameters and relate stresses in the rotor details and the perturbation air flow parameters.
The accomplished research shows that the nonsteady-state mechanical system has torsional oscillation amplitudes much higher than nominal angles of torsion when in the steady flow. This can result in malfunction of main mine fan. It is possible to diminish the torsional oscillation amplitudes by increasing the power shaft inflexibility due to enlarged diameter of the shaft or lowered inertia moment of the rotor. However, the equipment cost will rise and assembly of the heavier shaft will complicate in this case.
It follows from the graphical charts that on actuation of fan, the fan blades pass through a number of resonance zones. This causes neither hazardous stresses nor strains in the blade unit structure due to fugacity of the blade occurrence in these zones, as well as owing to low energy of perturbing air flow generated by guide vanes and directing vanes and rotational air flow separation. Upon the fan runout, it is required to equip the fan engine with brakes in order to cut the time of the blades occurrence in resonance zones. Key words:
axial fan rotor, stress-strain state, perturbing air flowTEREKHIN E.P. THE TECHNIQUE ENGINEERING CALCULATION GRANULATING SCREW PRESS FOR BENTONITE CLAYS ACTIVATION
The technique allows to determine the power characteristics of the press, depending on the geometric and kinematic parameters, as well as the properties of activated bentonite clays. Operation of the production line at JSC «NIIKMA» experimental plant showed the accordance of energy costs with those of calculated under various loading conditions.
Maximum stress regime of a screw extruder jammed with compacted semiplastic clay is characterized by the absence of forward motion of clay and the low torque on the drive. In this case, clay clogs spacing of flight screws, and the screw turns into a solid clay cylinder that rotates and interacts with clayey jacket of the housing.
The engineering design procedure for a granulating screw extruder was used in designing of granulated activated bentonite production line that has been successively operated at the pilot plant of NIIKMA JSC. The derived relations can be used in calculation of squeezing machines for granulation of other plastic materials, e.g., expanded-clay aggregate. Key words:
screw press, calculation, bentonite clay, activation, granulation.
TOGIZBAEVA B.B. CALCULATION OF MAXIMUM BIN OUTLET SIZE
The article presents the experimental data on modeling, at sufficient reliability, a real flow of movable ore under influence of such factors as cohesion, moisture and others.
Simulation of feeding, keeping and discharging of fine-crushed ore assists in studying the main factors governing these processes. The simulation at 1:20 scale offers an opportunity of assessing reliable predictability of these processes in full-scale conditions.
Modeling of the free-flowing material behavior in a bin assumes constant ratio of the bin outlet diameter and the maximum material fragment size. Key words:
bin outlet, ore consolidation, modeling, free-flowing material.FOKIN A.E., GAVRILENKO M.D., SHISHKAREV M.P. HEIGHTENING OF LOAD ABILITY OF ADAPTIVE FRICTIONAL CLUTCHES OF THE FIRST GENERATION
Synthesis of an adaptive frictional clutch of the first generation with the differentiated steams of a friction having various average radiuses of surfaces of a friction is realised. It is displayed, that at certain parities of magnitudes of average radiuses of surfaces of a friction of leading and led frictional groups the created construction of a clutch possesses higher, in comparison with a clutch having identical average radiuses of surfaces of a friction of frictional groups, load ability.
Traditional approaches to increasing load-carrying capacity of first-generation adaptive friction clutches—enhancement of friction couples, enlargement of mean radius of clutch friction facing, gain in amplification factor of feedback device, etc.—result in degradation of other performance characteristics of the adaptive friction clutches—operation accuracy, size and weight.
Toward the increase in the load-carrying capacity of the first-generation AFC, this article proposes a low-output command unit to control clutch force of friction couples with enlarged diameter of clutch friction facing, at full possession of AFC operation accuracy.
Increase in the load-carrying capacity of AFC with unequal radii of friction facings of the drive and driven clutches is achieved when the driven friction clutch facing radius is larger than the radius of the drive friction clutch facing. Key words:
adaptive frictional clutch, feedback, strengthening factor, friction factor, average radius of a friction.Automation and information systems
GONCHARENKO A.N. INTELLECTUAL AGENTS INTERACTION SYSTEM ANALYSIS MULTIAGENTNY SYSTEMS
Article is devoted to system approaches description intellectual agents interaction in the industrial enterprise multiagentny system where the agents’ collective behavior assumes agents cooperation at the collective solution of tasks. Thus bilateral and multilateral dynamic relations between agents establishment is not only agents’ activity consequence, but also necessary condition coalition communities formation. A certain mathematical base for creation mathematical models on the theory games basis is brought. Options cooperative type agents’ interaction, antagonistic game, the accounting compromise agents’ interests, conformism and evasion principle interaction are considered. Some formalistic approaches description rules dialogue and communications between agents from the view point of "consent" (negotiations), or "disagreement" (dispute debate) logic are offered that in the subsequent gives the chance to present to the logician agents negotiations in multiagentny system.Key words:
intellectual agent, multiagentny system, theory of games, strategy of behavior of agents, industrial enterprise, mathematical model, game-theoretic models.EGOROV I.V., VNUKOV A.A. ASSESMENT OF EFFECTIVITY OF PARALLEL DIRECTIONAL INTERPOLATION ALGORITM IN DIGITAL IMAGE SCALING MODULE
This article deals with digital image scaling and optimizing of calculations by means of parallel processing. It is argued that the most efficient structure for this task is that of many-staged processing. Ii proposed to use FPGA as the hardware basis.
The main velocity advantage of pipelined approach as compared with one-pass processing is the merit of fast zooming algorithms with a certain factor (in our case, 2) where majority of preliminary image analysis algorithms belong.
Combination of targeted interpolation algorithm and pipeline mode allows elimination of consuming multiplication and division processes, using exclusively fast integer addition, diminution and shift operations of modern PLD equal in fast performance to VLSI.
With modern PLD-aided scaling, higher response rate as compared to software-only approach is achievable along with the option of system modification. Key words:
image scaling, parallel processing, FPGA.SAMARIN N.N. THE ALGORITHM OF THE RECEIVING AND INTERPRETING DATA FROM THE RUNTIME JOURNAL OF THE VIRTUAL MACHINE
The article contains the research of the runtime journal of Bochs virtual machine that provides a complete hardware emulation of the x86 platform. The aim of the article is to develop the algorithm of the receiving and interpreting data from the runtime journal of the virtual machine with the possibility to use it in analysis of the memory areas of the computing system.
By implementing a sample log information about the virtual machine read and write operations on specific locations in the area of memory, it is possible to monitor all the software that runs under a hypervisor. On this basis, the algorithm of obtaining and interpreting the data from the job log of the virtual machine.Key words:
virtual machine, sourceless software, memory area, processor, linear address, physical address, undocumented feature.Aerology, methane, safety
MAKAROV V.N., LEONTEV E.V. GENESIS AIRIGN GASSY COAL MINES AND EVALUATION OF EFFECTIVENESS OF ITS IMPLEMENTATION
The set of all mine fans is to be assumed the combined exhaust-and-forced ventilation complex providing safe health conditions, eliminating methane hazard and creating a gas barrier in a mine. In this context, it is required to create a local ventilation fan complex in order to generate the required depression in the zone of air and methane flow separation, with the aim to ensure aerogasdynamic isolation of stopes and mined-out voids, given concurrent operation of main mine fans and gas-suction plants.
The curves of specific relative methane content, absolute methane content, production heading load and air distribution coefficients are presented. Specific relative ventilation expenditure within the coal mining cost structure is shown.SHEIN A.YU., ZAITSEV G.YA. INDUSTRIAL USING OF GAS METHANE AND REDUCTION OF IT EXTRASS IN AN ATMOSPHERE BY THE ENTERPRISES OF COAL INDUSTRY
The article is about an exploitation of environment protective equipment using the reprocessing fitting CMM. The implemented projects have been reviewed.
It is of interest at this time to introduce gas (methane) use technologies in view of the atmospheric air protection from the greenhouse gas emission and the country energy supply.
There is immense experience gained in the mine methane recovery worldwide.
By experts’ estimate, coal methane reserves in USA amount to 4–11 Bm3
. Annual mine methane production is 1 B3
. China ranks second to none in the world production of coal and mine methane emission. Coal bed methane reserves range 30—35 B3
Russia holds 72–79 Bm3
methane occurred mainly in the Tungussky, Kuznetsky, Leninsky and Pechorsky Coal Basins.
Ukraine is one of the leading producers and users of mine methane in the world. The country imports nearly 55 Bm3
of natural gas (70—75% of the demand). By coal methane reserves, Ukraine ranks fourth after China, Russia and Canada, keeping ahead of USA.
Mine methane use investment projects under provisions of the Kioto Protocol are implemented in five coal mines in Donetsk Region, with total investment of UAH 791.6 million.
Application of new promising techniques of coal bed degassing will enhance productivity of operating cogeneration plants.
The Institute of Geotechnical Mechanics and the Institute of Pulse Processes and Technologies of the National Academy of Sciences of Ukraine possess scientific developments on electrical discharge and hydrodynamic impact, that showed successfully in oil and gas well treatment, outburst prevention and intensification of coal methane recovery using underground boreholes.
Introduction of methane recovery and use techniques will provide advantages of extra financial support, enhanced mining safety, advanced equipment and technologies and improved environment.Technology mining
KREMCHEEV E.A., PETROVA T.A. LARGE-SCALE MECHANIZATION OF MAN-MADE DEPOSITS SHIELDING OPERATIONS BY COMPOSITES BASED ON POLYMERIC BINDING AGENTS
The distinctive features of the formation of man-made deposits that created in the mine technical practice are shown. A new technology of proper and environmentally efficient isolation of man-made deposits by forming the face of polymeric materials in the melted state was presented.
Existing mineral processing technologies fail to provide complete extraction of commercial components. Waste accumulates and becomes mining-resulted mineral source.
At the deposits developed by the hydraulic fill method, millions of cubic meters of processing tailings have been accumulated.
The mining-produced waste accumulations daily undergo oxidation, leaching and disintegration, which alters their mineralogy and material constitution, and results in outflow of different elements and origination of pollution areas.
The article reports the results of integrated research of mining waste accumulations in the areas of operation of Gazprom JSC, Mikhailovsky Mining-and-Processing Integrated Works JSC, Lafarzh Cement JSC, and others.
The reliable and ecology-friendly waste isolation technology has been developed based on shielding made of melt polymeric materials. Apart from other advantages, the technology allows polyethylene disposal being the ecologically important issue . The polymeric cover making takes up to 12–15 kg polyethylene waste per each square meter.
Based on the available research outcomes, the author positively concludes that disintegration of existing mining waste accumulations is an urgent challenge of national economy, feasible using the offered safe shielding technology. The developed mine waste conservation technology will assist in handling problems on mitigation of economic damage due to potential mineral wealth loss under wind and water erosion, as well as improve ecological situation at locations of mining waste accumulations.SHAGAROVA O.N. ABRASIVE WEAR ENVIRONMENT MANAGEMENT AS WAY OF DURABILITY INCREASES THE MINING AND PROCESSING EQUIPMENT
Оn the example of magnetic-pulse processing quartz sand ways the abrasive wear environment management for the purpose durability increase the mining and processing equipment are considered.
Abrasive wear process components are not only interconnected but can individually affect the rate of abrasive wear and, thus, the durability of work faces of equipment.
Extension of durability of mill effectors requires reduction of the milling process energy intensity, i.e., breaking of structural bonds in abrasive grains. This is possible through change in the abrasive mass lattice parameters under external impact, for instance, magnetic-pulse treatment.
From the research findings, it is confirmed that the magnetic-pulse treatment, as the abrasive wear medium, greatly affects physico-mechanical characteristics of quartz sand (grindability). Key words:
abrasive wear environment, abrasive weight, magnetic-pulse processing, MIO, quartz sand, enrichment, crushing, durability increase, wear of the equipment.Economy, management and planning
BOGDANOVA I.N. MANAGEMENT LABOR UTILIZATION
The article describes the main factors affecting the efficiency of the labor force in line with the development of market relations in the Russian economy and the restructuring of the coal industry.
We consider the political, economic, legal, moral and other regulators of behavior human rights in society, the problems of restructuring in the mining industry - there was a mass the Reduction of inefficient jobs in existing plants and the elimination of unprofitable and non-promising industries. Economic reasons are given the elimination of unprofitable coal mines.
Structural transformations were accompanied by certain social tensions. In most regions of the country clearly identify the problems related to human resources, characterized by the negative trends in demography, the imbalance between supply and demand of the proposals in the labor market, problems related to the field of vocational education, as well as the efficient use of labor.
The causes of work outside the normal hours of work on the initiative of the employee and by the employer.Key words:
efficiency, labor, worker productivity, the coal industry, the factors of production.SAVON D.YU. METHODOLOGICAL APPROACHES OF FINANCING OF THE SPHERE OF ENVIRONMENTAL MANAGEMENT IN THE CONDITIONS OF THE SUSTAINABLE DEVELOPMENT OF THE REGION
In article actual problems of methodology of financing of investments in the solution of problems of a sustainable development of the region are considered. The main task of each region is interaction of social, economic, nature-resource and other relations; providing on this basis of the stable and coordinated development of all elements of a social complex of the regional government corresponding to needs of the person, society and the nature. The author offered regional system of financial security of ecological and social responsibility of business in investment projects of state-private partnership at a sustainable development. Results of nature protection actions and financing of investment projects are expressed not only in increase in profit on primary activity, reduction of expenses for production, but also in rationalization of use of natural resources, in decrease in pollution of surrounding environment. The main condition at calculation of efficiency of investments is the assessment not only economic, but also social, and ecological consequences of implementation of the investment project on environmental protection and ecological safety.
As shows the analysis of world practice, in the conditions of transition to an innovative way of development a creative and regulating role of the state, urged to provide technological progress of society, increases. The state becomes the key factor responsible for elaboration of national strategy of development and creation of mechanisms of its realization and financial security, formation of new schemes of innovative progress with use of financial institutions of development and a private initiative in the GChP projects.
In article need of legal fixing of the principles of investment management of sources of financing of subjects of GChP by means of attraction of the borrowed funds included in structure of the public (municipal) debt and provided to enterprise structures on a returnable basis reveals. As recommendations securities will be able to become a full and full-fledged source of financing of the GChP projects, including implementation of long-term and capital-intensive investment projects of partnership of the state and enterprise structures.
According to the author, it is necessary to intensify loans at the population which is potentially interested in opportunity to enclose the savings in objects of partnership of the state and enterprise structures with the subsequent receiving the guaranteed, stable profit.
Development of state-private partnership in the sphere of financing of environmental management creates necessary institutional preconditions, economic incentives, enters different ethical and moral standards which allow to harmonize interests of society, business and environment preservation.Key words:
methodology, finasirovaniye, investments, sustainable development, region, state-private partnership.SKACHKOVA E.S. THE EFFECTIVENESS OF LOW-GRADE COAL GASIFICATION FOR USE IN MINI HEAT STATIONS IN THE COAL MINING COMPANIES DURING THEIR TRANSFORMATION INTO ENERGOCLUSTERS
According to forecasts of the development of Russia's energy by 2020, the growth rate of low-grade coal prices will be considerably lower than the growth rate of heat and electric power prices. So the expenses on these purposes in coal cost values will grow faster than coal selling prices, and it means that the companies of low-grade coal mining will get less income. The problem of the electric power price rise is particularly acute for coal mines as their expenses on electric power per 1 ton of produced coal in absolute terms are 3 times higher than the same expenses of coal open pits.
However, the coal companies have a real opportunity to reduce these expenses by 3-7 times and save up to 100 rubles per 1 ton of produced low-grade coal. It can be done by creating a plant for own coal gasification. They should choose as constructively and operationally simple kind of gas generators as possible. This gas generator – working with low temperature on the coal-water slurry with micron milling – was invented by JSC "Financial and Industrial Company "INVESTTEK" performing Ministry of Education and Science of the Russian Federation order. With its help the company will be able to use electricity and heat of its own production in its core business, and also sell them out, diversifying the coal mining.
The process of coal gasification with subsequent use of generator gas at mini heat stations is the beginning of the formation of energoclusters – an important innovative direction of the coal industry technological restructuring.Key words:
coal gasification, its self-cost value, the difficulties with selling heat and electric power to off-site consumers, terms of the effectiveness of gasifiers.SHPIRT M.YA., SKACHKOVA E.S. THE PROSPECTS OF USING LOW-GRADE COAL AND ORGANIC-MINERAL TAILINGS OF BLACK COAL MINING AND BENEFICATING GASIFICATION
In some cases it is expedient to use generator gases, received after gasification with aero-steam blowing, as fuel for heat and power generation instead of low-grade coals (brown and high-ash black coal). Black coal beneficiating tailings, which are not used for this purposes at the present time, can be taken for processing as well. The article is about the main factors which determine structures, volumes and calorific values of gases generating after low-grade (black and brown) coal and beneficiating tailings gasification. Substantially the structure of gases depends on the containing (in g atoms on dry ash free mass) of carbon, hydrogen, oxygen and sulfur (if its concentration is more than 1,5-2 m%). The emission of generator gas is in inverse proportion with the value B = Wr + Ad. It’s expedient to use low-grade coal and beneficiating tailings with (Wr+Ad) ≤ 60-62 m% as base fuels for boiler plants or mini heat stations with heat and power generation.
The creating of gas generators with coal-water slurries gasification will facilitate the establishment of energoclusters with coal mining, beneficiating and heat and power generating to support industrial needs of factories and social needs of nearby settlements. The full utilization of generated ash products can be achieved simultaneously to use them for building some artificial earthwork structures, car roads and other purposes depending on the structure of those products.Key words:
low-grade coals, gasification, generator gases emission analyze.Electrification
ISTOMIN A.M., PETROV G.M., KUTEPOV A.G. CONTEMPORARY APPROACH TO THE LIGHTING IN THE UNDERGROUND MOUNTAIN WORKINGS
Artificial lighting in different industries consumes up to 20% energy, and energy consumption grows year by year. For example, by the expert appraisement of the International Energy Agency, general electric energy consumption in 2025 will be twice as much as in 2010. Based on the analysis of capacity of various light sources, the present study shows that the lowest energy is consumed by LED lamps characterized by long durability, low energy consumption and high mechanical strength.
Mine lighting, considering mine specifics and operating conditions, must use purpose-made mine lamps. This article reviews designs and performance of lamps of model types LSP and NSR widely used in mine lighting. Mine lighting networks are generally supplied by lighting equipment models AOSh-4, AOSh-2.5 and AOSh-5.0. The LED lamps allow appreciable reduction in rated lighting network power and diminution of cable section, which calls for design and manufacture of lower power lighting equipment. Key words:
illumination, light-emitting diode lamps, lighting transformers, aggregates and apparatuses, underground mountain workings.Mathematical and computer modeling
ALYUSHIN Y.A. POWER MODEL OF MECHANICS IN MINING
On the basis of representation of an increment of specific energy of mechanical system through changes kinematic characteristics the equations of movement in the form of Lagranzh the hypothesis about existence of grounds new physical properties which define the mechanism of self-organizing reversible and irreversible deformations, change of mechanical properties in view of previous history of deformation and changes of external conditions is stated. Power interpretation of concept «the generalized force» is offered.
In soil mechanics plays a special role or compressibility of the seal under the external compressive loads, drying, coagulation of colloids, etc., with a decrease in soil porosity, including the expense of local shifts, changing the thickness of aqueous colloidal membranes, etc. But all - always can be considered feasible basic assumption of continuum mechanics - the coming of the particle remain closest throughout the process of movement.
Mechanics energy model allows to prove the existence of new physical properties of soils, the ability to transition to the new scale of medium voltage, by analogy with the thermodynamic temperature scale, and the feasibility study of their impact on the change in the structural links between the mineral particles, the formation of dispersed formations, etc.Key words:
Energetyc model of mechanics, the equations of movement, mechanical and physical properties terrestrial bowels.USTIMOV K.O., FEDOROV N.V. ALGORITHM OF CONVERSION OF IDEF0-MODEL TO COLOURED PETRI NET
The algorithm of conversion of IDEF0-model to Coloured Petri Net is described. IDEF0-model can be used for functional modeling of business-processes. Coloured Petri Net allows to conduct a simulation modeling. Mathematical descriptions of IDEF0-model and Coloured Petri Net are provided. The considering algorithm is based on these descriptions.
The CPN’s colour set is per se a modeling language data type, however the syntax of CPN ML doesn’t allow to operate with data types directly, it is necessary to define colour sets.
Multisets are applied as position markings, arc expressions and other types of inscriptions. Mutlisets are enlarge the concept of Petri net’s tokens.
The described algorithm allows to convert IDEF0-diagram of common kind that doesn’t contain tunnels and call arrows, to CPN. The derived model is the basic simulation model of business-processes.
A CPN color set is in a sense the modeling language data type but the CPN ML syntax does not allow operating directly the data types, it is required to define color sets.
Maltisets are used in position identification, expressions of arcs and other elements. Multisets expand definition of tokens in the Petri nets.
The article considers the algorithm of CPN transformation of any standard type IDEF0-diagram without tunnels and arrows. The resultant model will be the reference simulation model of business-processes. Key words:
IDEF0 methodology, Coloured Petri Nets, algorithm, mathematical model.ILYUSHIN YU.V., KOMARSKIKH A.V., TRUSHNIKOV V.E. SYNTHESIS OF STABILITY CONTROL TEMPERATURE FIELD THERMAL CAMERA
We consider the problem of synthesis of distributed control for the stabilization of the temperature field of the camera. The analysis of a mathematical model to account for the form and set the camera's precision solutions. As a method of control is chosen distributed system.
The developed automated control system consists of the adjustment device, control object and control actions.
The author has designed automated control for a distributed technological unit represented by the electric heating chamber for stretching of light emitting diodes.
According to technical specifications on quality of the automated control in steady operation and transient conditions, the proportional integral-differential adjustment law has been accepted. Key words:
automatic control system, the regulation of the temperature field, the regulator, the objects with distributed parameters.LEBEDEVA E.V., SOKOLOV V.V. DEFINITION OF A STATISTICAL RELATIONSHIP BETWEEN GEOLOGICAL INDICATORS
Mining - a geometric study of mineral resources has always been based on the account of the spatial distribution of geological indicators. Statistical relationships between geological parameters are studied by methods of correlation and regression analysis.
Using the correlation analysis and low component count, the author has found relationship between contents of nickel and copper in polymetal orebodies.
Mathematical statistics methods make it possible to estimate the nature and interrelation of geological characteristics of an ore body and designate further research trends and techniques.Key words:
mineral resources, geological parameters, testing, statistical dependence.LASHENCO A.L., ILYUSHIN YU.V., TRUSHNIKOV V.E. DEVELOPMENT OF ADAPTIVE MANAGEMENT SYSTEM WITH THE DISTRIBUTION OF THE PI- CONTROLLER
The possibility of using the device for the synthesis of adaptive control of distributed parameter systems. The structural diagram of the adaptive control system with distributed PI controller. Formulated and solved the problem by developing an algorithm to adapt the settings and methods of calculating the distributed controller.
Mathematical model of the object is described by the set of differential equations in terms of partial deriva-tives.
The task was to solve the problem on adaptation of the control device to variation in characteristics of the object so that the marginal stability constraint is satisfied.
The flow chart of the distributed adaptive control is presented.
The resultant data check and the adaptive control loop modeling used Borland Delphi. 7 and the dedicated programming support.
Finally, it is concluded that the adaptive control based on the distributed proportional integral-differential adjustment enables fast response of the control loop and the acceptable performance of transient phenomena. Key words:
Distributed parameter systems, adaptive control systems, distributed control, transfer functions of distributed objects, systems analysis, management.SHABANOV A.A., TRUBIN V.S., VELIKANOV V.S. HIERARCHY ANALYSIS APPROACH TO AUTOMATIZATION OF DECISION-MAKING IN ERGONOMIC MANAGEMENT RANKING OF MINING MACHINES
Under consideration is the hierarchy analysis method as the efficient tool of the systematic approach to handling intricate multialternative problems with complicated decision-making. Based on the HAM mathematical apparatus, the mining machine ergonomics ranking decision-making procedure has been developed.
The procedure application is exemplified by the problem solution on selecting a mining machine (in terms of a mining shovel model EKG) best of all meeting the ergonomic management conditions of a customer.
The created programming support furnishes exhaustive information on executed pair comparisons with eliminated possible inconsistency of pair comparison matrixes, evaluates alternatives of each ergonomic criterion and displays final results in the form of aggregate graphical chart.
The programming support enabled automatization of ergonomics criterion weight evaluation and ranking of mining shovels by their ergonomic maintenance level. Key words:
decision-making problem, data, method, dataflow machine, alternative, weight, matrix.Geology
RADOMSKII S.M., RADOMSKAYA V.I. MOBILE FORMS OF NOBLE METALS IN LOOSE DEPOSIT GOLD OF LAYER POKROVSKOE (UPPER AMUR REGION)
Are represented the results of studies of the mobile forms of noble metals in the friable deposits of Pokrovskiy of gold-ore Upper Amur Region layer. Are investigated 9 extraction systems (H2
O + [H]+
O + [OH]-
COOH + NH4
COOH + NH2
OH; KCl; KBr; KI; H2
) with adsorptive interactions (0-100 kJ/mol), from the thermodynamic (ΔGº) and physical chemistry parameters (рН, Eº, concentration ppb), which made it possible to divide mobile forms Ag+
to the physically (0-5 kJ/mol) and chemically (15-100 kJ/mol) adsorbed complex compounds and to establish the quantitative relations 80% and 20% between them. The noble metal atoms are mobile in physical adsorbed group, but active centre takes 20% Ag+
, 40% Pt2+
and 50% Au+
in chemical adsorbed group. Key words:
geochemistry, thermodynamics, noble metals, physical and chemical adsorptions.Works of young scientists
BASHUTKIN V.A. INTERNATIONALIZATION MODEL GENERALITY ANALYSIS IN TERMS OF THE UPPSALA MODEL AND THE MODEL OF INTERNATIONAL PRODUCT LIFE CYCLE
More often countries and companies are facing external factors in their development process. When internal market is satisfied, internationalization becomes one of few possibilities to increase profits, economy of scale, and to develop further. Growing concern about internationalization boosts different theories and way of explanation how companies enter foreign markets. In this article Uppsala model and model of international product life cycle are being described as well as their ability to fully explain the process of internationalization.Key words:
foreign market entry strategies, entrepreneurship, international management, strategic management, Uppsala model, international product life cycle model.BORKIN V.S. FEATURES OF OCCUPATIONAL SAFETY AND HEALTH PERSONNEL TRAINING SYSTEM
Examined problematic aspects and features of specialists training of industrial companies on occupational safety issues. Formulated the basic principles of learning and a culture of safety. Stressed the importance of cultural production at plants whether of the form of ownership. In the article examined the basic legal acts in the area of health and safety training in the Russian Federation, their advantages and disadvantages. Emphasized the need to update existing documents in the area of health and safety training. In article the urgency of a problem of perfection of specialists training system in the industrial companies taking into account safety requirements of productions processes is shown. The problem of optimization of specialists training programs in the industrial companies is formulated.Key words:
safety, occupational safety, safety culture, specialist, training, competence, knowledge, skills.BORKIN V.S. FEATURES OF SYSTEM ANALYSIS AND MODELING OF POTENTIALLY DANGEROUS PROCESS FLOW OPERATIONS
Examined the features of the system analysis and modeling of potentially hazardous operations of technological processes in the form of ergative systems. Presented a mathematical model of a potentially dangerous operation, fully allowed to take into account the functional state of the specialist, and reliability characteristics of technical systems. In the article emphasized the connection between human factors and safety in ergative systems. Marked the importance of the level of training (competence) and the timeliness of operating personnel (specialists) training as a way of achieving high level of safety in industrial companies. Presented advantages of using mathematical apparatus of the theory of Markov processes in the research of controlled random processes. In the article stressed that the safety model of ergative system must take into account both: the functional state of the specialist, and the condition of technical systems.Key words:
safety, potentially dangerous operations, ergatic systems, specialist, prerequisite to an accident.GORBIK V.S., MOMOT B.A. MODELING AND COMPARISON OF ASYNCHRONOUS ELECTRIC DRIVE OPERATION WITH HIGH-RESPONSE CONTROL ALGORITHMS
As of today, power electronics achievements enable analysis of asynchronous electric drive together with commutator. In this case, frequency converter governs the drive energy characteristics .
The asynchronous drive control algorithms are compared, and the algorithm choice effect on the drive response speed and energy is assessed in the article.
Aimed at comparison of the response speed and energy performance of asynchronous drives with DTC and with on-off regulator with vector control algorithm, the model of the drives is constructed with the help of Matlab, Simulink and SimPowerSystems.
The model of the unit with DTC algorithm contains the asynchronous electric drive model, straight rectifier model, inverter model with IGBT module and control module with DTC algorithm.
The modeling results show that the on-off regulator with vector control algorithm exhibits response speed comparable with the DTC drive; the harmonic analysis of the stator current curve yields that current consumed by the asynchronous drive with the vector control algorithm and on-off regulator is less distorted with harmonics when in the stable operation mode. Key words:
asynchronous electric drive, DTC algorithm, vector control algorithm with on-off regulators.GUSEVA A.M. HOLLOW PEAT POT MANUFACTURE RE-EQUIPMENT
In focus is the rational and comprehensive use of the local peat reserves and studies of hollow peat pot manufacture re-equipment.
One of the usage options for wood substance inclusions in peat is production of binding admixture (wood fiber) for manufacturing of hollow peat pots. The molded good production based on peat and stamp wood requires upgrading of current technique.
The article suggests adding the forming process with facilities meant for making pierced walls of hollow peat pots. Such engineering design will afford ground for rational utilization of original raw material with no quality loss of the end product. Key words:
wood inclusion of peat, perforated wall, molded products, peat pots, peat reserves, forming equipment upgrading, peat pot.DENISKINA T.V. A THEORETICAL STUDY OF THE MOVEMENT OF MATERIAL ON THE VIBRATING SURFACE UNDER THE INFLUENCE OF VIBRATION DIRECTION
The paper presents theoretical investigations of vibrational transportation of mining raw materials on an inclined straight surface. The dependence of the rate of vibrational transfer, power consumption of the transportation of the profile fluctuations (the trajectory, frequency, amplitude, angle of vibration and angle of load-bearing body).
Currently, in view of the complete cycle rock milling technology advancement, it is of concern to describe mathematically motion of particles upward the shaking surface with the concurrent screening, which increases efficiency of sizing.
The tentative explanation of vibratory conveying of granular materials needs the relation between conveying velocity, conveying energy consumption, efficiency of momentum transfer from carrying surface to carried material and vibration parameters (trajectory, frequency, amplitude, vibration angle and carrying surface tilt angle).
Experimental studies into the behavior of conveying velocity and vibration amplitude curves shows that the vibratory conveying velocity gradually increases along the parabola when the vibration amplitude grows. The higher is the vibration frequency, the higher is the conveying velocity.
The research covers upward motion of a single particle on an angled surface, with vibrations oriented along an inclined line. Rock batch is a mix of various size and shape particles in a thick layer displaced over the screen.
The presented theoretical studies of the rock particles motion upward the tilted flat shaking surface can be used for design calculation and selection of parameters of vibration machines with curved screening surface, which seems necessary for milling-and-classification assemblies. The screening surface angulation increases efficiency of rock batch sizing due to more intensive classification and segregation of the material in this case. Key words:
Vibration machines, inertia forces, mining industry.KORREYA DE SA FAMI GOMESH ROLE OF TECHNOLOGIES IN MODERNIZATION OF ECONOMIC ACTIVITY OF THE ENTERPRISE IN THE COUNTRIES OF AFRICA
One of indicators of positive dynamics of innovatively active enterprises in the countries of Africa is introduction of the latest technologies and their use by the research organizations, institutions of higher education, the small innovative companies and the industrial enterprises. Production modernization, need of development of scientifically reasonable recommendations about effective management and development of material base of the enterprises is a necessary condition of ensuring competitiveness of industries, restoration and growth of demanded, economically effective production that is considered by the author of article.Key words:
Innovative Technology, modernization of production, Production efficiency, Improving the quality of production, material resources.MGOTLOV A.T. ADVANTAGES AND WEAKNESSES OF “BALANCE-OFF SHEET” ASSETS SECURITIZATION
This article is dedicated to innovation way of financing in Russia – “Balance Off Sheet” securitization. Are described the key differences between such deals and deals of traditional financing. Also are disclosed the situations, in which assets securitization has the most coverage, at the same time there are efficiency multiples which the top-management of company implements for identification and structuring deal and final goals. In addition to those criteria’s there are the list of specific indicators, which top-management can ignore to structuring deals – thus it`s a significant advantage in comparison with other standard`s ways of financing. By the one hand are unpacked the positive aspects of assets securitization, they touch financing benefits for the company, as well as strategic preferences, which are inherent for such deals. It will be an explain not only the finals goals of the deals, but an opportunities of reinvesting free resources – especially those areas, that could satisfy the needs of company. As a rule, it`s the most important reason and purpose of implementation such deals. By the other hand, there are weaknesses, which are attached to assets securitization. The description of those allows us to understand the cause of slowly extending of this method and to indentify the breakdeals in realization; especially, the absence of flexible of deals, the changes of agreement conditions with previous debtors. Nevertheless, “Balance Off Sheet” assets securitization is slowly extending in Russia coverage and is going to new structures and models.Key words:
Assets securitization, refinancing of accounts receivables, alternative of standard way of financing, balance structure management, improving sustainable and liquidity of company), innovation methods of financing, SPV using operation.NEMIROVSKIY A.V. THE PROBLEMS OF DUST DEPOSITION IN THE OPERATION OF THE TAILINGS STOJLENSKIY GOK
The problems of the tailing effect on the environment, the physics of the formation of bulk tailings to the distribution of particles at certain distances, depending on their size. Presents current methods and dust suppression methods, including used at JSC "Stoilensky" water curtain.
The main method of dust control on existing tailings is to create on the surface of artificial erosion-resistant coatings. Employed in the composition of the reagents and represent various binders and cements both organic and inorganic origin.Key words:
environment, tailing, dust, wind loads, the dry beach, the water curtain.NIKIFOROV A.V. FAULT INFLUENS ON MINING OPERATIONS PLANNING FOR UNDERGROUND FLAT SEAM MINING
The article focuses main parameters of disjunctive dislocations and influence on flat-lying adjacent coal seams is considered.
Coal mining conditions are greatly affected by fracturing and faulting, location and conjugation of coal beds. The article analyzes rating of classification criteria and their influence on mining.
Geological fractures exert strong impact on mining operations in terms of changes in stress field, rock strength and other physico-mechanical properties and other alterations that violate standard familiar mining routine.
Geological fractures also affect safety areas where gas content is decreased down to unhazardous values due to undermining. Key words:
adjacent seams, disjunctive dislocation.SABLIN R.A. EXPERIMENTAL STUDIES OF OPERATION MODE VIBRATORY JAW CRUSHER CRUSHING CHAMBER INCLINE
The results of experimental studies of the vibration jaw crusher crushing chamber with inclined.
In an experimental investigation of the vibration jaw crusher with vertical crushing chamber, it was concluded that with increasing frequency, the performance of the crusher falls. In NPK "Mekhanobr appliances" were tested similar crushers, but with oblique crushing chamber. The purpose of these tests - identify technological change indicators crusher with increasing speed unbalances. The evaluation of granulometric composition of the crushed material were constructed experimental dependence of the performance, the degree of crushing," ton-reduction " (efficiency), power consumption for " tonne-reduction" of the speed unbalances. Our results imply that the calculation of performance based on the calculation of only the height of the prism material loss, is not correct in relation to VSCHD Slant crushing chamber.
The range of steady state operation of the crusher and the graphs of changes in process parameters on the speed unbalances.Key words:
vibration jaw crusher; vibrotransportation; drawrily, towards deepening solids.SVATANENKO O.N. DEVELOPMENT AND DEPLOYMENT OF AUTOMATED CONTROL SYSTEM OF DESIGN ESTIMATION DOCUMENTATION FOR BUILDING OWNER FUEL AND ENERGY COMPLEX ENTERPRISES
A the present time in connection with intensive increase of speed of construction, reconstruction, modernization and technical re-equipment of fuel and energy complex enterprises, the effective control mechanism of design and estimate documentation preparation is necessary.
The absence of a uniform standard solution on automation of all necessary processes called for the dedicated programming support based on the advanced information technologies.
This article presents the methodology of development and deployment of automated control system of design estimation documentation, considering the features of branch, using JSC "Gazprom invest Yug" experience.
The programming support is aimed at gaining enhanced efficiency of the construction design and estimate documentation preparation to be timely delivered to all partakers.
Economic benefit is gained from decrease in labor intensity, increase in managerial decision-making rate and accuracy and elimination of human factor in preparation of summary statistics on the condition of the design and estimate documentation. Key words:
Management of design estimation documentation, construction of fuel and energy complex enterprises, electronic document flow, JSC "Gazprom invest Yug".STEPUK E.I. ASSESSMENT OF CONFORMANCE OF ECOLOGICAL AND SOCIAL PROJECTS LAUNCHED BY SEVERSTAL JSC TO INTERNATIONAL STANDARDS
An idea of the sustainable development strategy in relation to achieving a balance of economic, environmental and social concerns is given in the article, it is described also how to prepare non-financial reporting in accordance with the recommendations of the ISO 14001 "Environmental Management System" and ISO 26000 "Guidance on social responsibility", the environmental and social policies analysis at JSC "Severstal" was made.
The article deals with Severstal JSC campaign on implementation of ecological and social projects, evaluates their implementation cost and assesses effect of the projects on the Severstal JSC development.
In spite of unfavorable market situation (recession in demand for metallurgy products in 2010), ecological projects are investment-consuming and the expenses show the upward trend.
The article compares the expenditure of Severstal JSC on the environmental actions.
The author describes consolidated financial results of Severstal JSC and its offsprings for 2010–2012. Since 2010 Severstal has been enjoying the fast-growing confidence of rating agencies, and the company ratings demonstrate sustainable growth.
Nonfinancial reporting of the company meets the requirements of international certificates on ecological management and social responsibility. CHAN QUANG HIEU DETERMINATION OF THE INFLUENCE STEMMING DESIGN ON UNTENSITY OF SHOCK WAVES AIR, TO REDUCE THE DANGER ZONE OF THE EXPLOSION IN THE VIETNAM
Consider engineering-geological and technique conditions of the existing and planned Vietnam’s coal mines;improving management of energy explosions for no increase in energy consumption to achieve the required degree of crushing rocks while reducing Peripherals on the environment, to reduce the danger zone of the explosion, is very relevant scientific and practical task in Vietnam.
The influence exerted by blasthole charge stemming design on air blast intensity was estimated in the full-scale experiments carried out in NuiBeo open pit in Vietnam.
The experimental data of the charge stemming design effect on the air blast intensity are analyzed, and the curves of the excessive pressure at the air blast front, reduced distance and the stemming design are plotted.Preprints
KANZYCHAKOV S.V. GROUNDING OF DIRECTIONS OF DEVELOPMENT AND SCHEDULE OF MINING IN COAL PITS UNDER CONDITIONS OF CHANGING ENVIRONMENT
The article discloses the factors that have the defining influence on the efficiency of coal pit. The main ones are the overburden coal ratio, the complexity of the conditions of mining, coal quality, availability of supplies, load-carrying transport works in mining, the possible intensity of mining. It was determined that the support of the efficiency of coal pits under conditions of changing environment is possible by changing the order and schedule of technological units’ mining on the basis of rational structure of production reserves.
Key words: coal pit, the factors of efficiency, production reserves, schedule and order of mining.
RAFIENKO V.A., YUSHINA T.I., ROMANOV A.A. IMPROVING SHUNGIT CONCENTRATE APPLICATION PROCESS ACID LEACHING
The most promising area schungite production of high quality products for use in water purification, as a filler in rubber and paint industry is a combination of fine grinding processes and oxidative desulfurization.
The results of laboratory tests established the law of increasing the rate of oxidation products schungite contained in sulfide minerals and elemental sulfur by lowering the pH of the medium.
Following the method set polarization curves cause accelerated oxidation of sulphide minerals during the acidification of the liquid phase, which consists in reducing the intensity of the formation of layers of iron hydroxides by lowering the pH and accordingly the difficulties in transferring components of the electrochemical reaction to the interface. Based on the theory of corrosion oxidation of minerals will explain the abnormally high rate of oxidation of pyrite which is in ohmic contact with the carbon-silicate matrix shungit.
The study showed that the optimal temperature conditions of the reaction mixture is heated to 60-700C. The results of technological tests have shown the effectiveness of the technology and demonstrated the possibility of obtaining high-quality schungite concentrate with a mass fraction of sulfur to 0.4%.
Key words: shungite, grinding, acid leaching, desulfurization schungite concentrate, sulfur-containing minerals.
In the article the reasons for low efficiency of Sub-Saharan Africa agriculture are analyzed. The author proves that in the current circumstances, the most simple and effective way out of this situation should be the introduction of irrigated farming, preferably in the form of small-scale projects corresponding to the small size of the farms.
Key words: Subsaharan Africa, water resources, agriculture, irrigation, small-scale projects, development.
BARNOV N.G. GEMOCHRONOLOGY OF CORUNDUM
In chronological aspect considered finds the discovery, knowledge, terminology and usage in different spheres of varieties of the mineral corundum. Illustrates the close relationship mastering ordinary and noble corundum with the material and aesthetic evolution of mankind.
Key words: gemology, corundum, ruby, sapphire, terminology, chronology, the history of mankind, technology.
SAVIN K.S., POPOV M.S. METHODOLOGICAL BASIS OF EVALUATION OF THE ROLE OF COOPERATION AND SPECIALIZATION IN INCREASE OF EFFICIENCY OF DEVELOPMENT OF NATURAL DEPOSITS
Provides a methodological framework based on the principles of determining the efficiency of application of cooperation and specialization of production processes of mining during the development of natural deposits.
Key words: methodological basis of evaluation of the role of cooperation and specialization, the efficiency of development of natural deposits.
SARUEV A.L., KHARLAMOV S.N., PAVLOV S.A. AND OTHER CURRENT ISSUES IN PIPELINE TRANSPORTATION OF HYDROCARBONS
The author presents the novelty of the connection of drilling bars by straight thread nipples.
The complex theoretical and experimental analysis of structural evolution of two-phased media in internal systems in regimes of steady and transitive, laminar and turbulent flows is presented.
It is proposed to design the emergency protection control using Markov’s models to minimize economic loss and maximize operational safety. The paper considers current certification of gas flow rate measurement units in terms of an offspring of the GAZPROM and reveals shortcomings of the certification procedure. The article illustrates economic effect of replacement of imported fuel by gas and displays dynamics of the shared funding of the project by the federal budget, republican budged as well as by financial establishments and investment companies. Description of experimental procedure and field research data on the percussive destruction of granite is followed with estimation of the effect exerted by the percussive system parameters on the rock breaking quality. The article reviews processing equipment used in cleaning of oil and oil products outflows by sorbents. The authors analyze current situation in the field of enhanced efficiency and safety of the main processing equipment at booster stations and show strategic lines toward optimization of maintenance service of the electric gas-compressor units in operation in the Gazprom Transgaz Tomsk LLC.
Key words: maintenance service, fault detection system, industrial efficiency, thread, nipple, drilling bar, joint connection, stress, structure, hydrodynamics, mass exchange, regimes, phases.
SAVIN K.S. FUNDAMENTALS OF ECOLOGY-ECONOMIC APPROACH TO ASSESSING THE FEASIBILITY OF THE USE OF PEAT EXTRACTION TO REDUCE THE NEGATIVE IMPACTS OF FOREST-PEAT FIRES
Abstract contains methodical fundamentals of ecology-economic approach to the assessment and selection of the directions of use of peat extraction to reduce the risk of forest-peat fires.
Key words: ecological and economic mechanism of assessment and selection of the directions of use of peat deposits. Forest-peat fires.
NIKITIN V.V., NIKOLAEV A.V., NENADOV A.L. OPERATING EXPERIENCE MINER WIRTGEN 2200 SM UNDER CAREER CARBONATE ROCKS "DUBNO STONE" IN DUBNENSKY DISTRICT OF TULA REGION
The experience of operation combine Wirtgen on open mountain Refs. The data on the geological conditions of the birth-place of Dubno and performance combine in the initial stage of development of space-born.
Key words: open pit mining, carbonate rocks, no-explosion method, milling grain.
INCREASE RESISTANCE OF DRILLING SOLUTIONS
A criterion for assessing the wear resistance of drilling column. The estimation of the amount of energy needed to change the structure and properties of solid carbide drill bits. The results of experimental work on the processing of drilling speakers with high-energy impacts. The conclusions about their impact on the tool life and the quality of the connection body bits - carbide tooth.
Key words: mining machinery, rock cutting tools, drilling tools, hard alloys, abrasion, wear resistance, carbide teeth , tungsten carbide, high-energy impact.
BYKOVA M.YU. DECISIONS TOWARDS HIGHER OPERATING EFFICIENCY OF LOCAL COAL–GAS–POWER COMPLEXES
The article is focused on scientific findings concerned with application of intracycle gasification technologies in local coal–gas–power complexes (LCGPC). Decisions on carbon dioxide gas removal from generator gas mixture allow 3–4 times higher caloric power of gas fuel. In order to even more enhanced calorific effect of gas fuel, it is recommended to use oxygen-steam blast in the LCGPC technologies.
Key words: coal, gas fuel, coal gasification, combination cycle utility, carbon dioxide gas removal, fuel combustion heat.
MASLOV I.Y. FEASIBILITY STUDY OF THE CHOICE OF EMULSION EXPLOSIVE, SENSITISED BY EXPANDABLE POLYSTYRENE BEADS, FOR OPEN PITS
This study shows that the application of emulpors:
- when we have borehole diameter more than 200 mm, oxidizer in matrix emulsion is rational to be prepared only of ammonium nitrate. Recommended loading density of emulpor is 1,05-1,10 g/cm3;
- when we have borehole diameter of 100-160 mm, oxidizer in matrix emulsion is rational to be prepared of the mix of ammonium and calcium nitrates. Recommended loading density of emulpor is 1,10-1,15 g/cm3;
- while mining water-flooded rock with low stability of benches and/or with the presence in mining rock of valuable fragile inclusions by blasthole charge of the diameter 150 mm and more it is rational to use emulpors with the oxidizer of ammonium and sodium nitrates with the loading density of emulpor – 1,0-1,05 g/cm3.
Key words: emulsion explosives, sensitized by expandable polystyrene beads, detonation velocity, relative performance index, emulsion explosive profitability index.
The deposited manuscripts
TARASENKO V.A. DYNAMICS OF COAL RESERVES AND FACTORS OF COAL MARKET CONDITIONS IN THE PERIOD 2000-2013
PANKRATENKO N.A. ESTABLISHMENT AND ANALYSIS OF THE RELIABILITY OF THE COMPLEX TUNNEL BORING MACHINE FOR SINKING THE ESCALATOR TUNNEL
SAVINA N.P. PERSPECTIVE DIRECTIONS OF THE OIL INDUSTRY DEVELOPMENT IN RUSSIA
TRUSOV V.A. WAYS TO IMPROVE INVENTIVE ACTIVITY IN HIGH SCHOOL