Parameters of flow charts for hydraulic backhoe excavation of sand-and-gravel deposits

The article analyzes some parameters of flow charts for cutting dry sand-and-gavel deposits using hydraulic backhoes. Hydraulic backhoes range widely in terms of their bucket capacity, starting from models with the smallest buckets, which is of particular concern in sandand-gravel quarrying because of small sizes of such quarries and their low productivity. The analysis is carried out for mining systems using modern foreign-manufacture hydraulic backhoes and dump trucks. The key parameters of each flow chart under analysis was the height of the cutting bench at the maximum possible width of cut. The study aimed to prove feasibility of operation of a hydraulic backhoe with top loading of dump trucks when the backhoe was set on a sub-bench. The benefits and disbenefits of this flow chart are identified. In terms of a conditional sand-and-gravel deposit, the efficiency of the flow chart with top loading executed by a hydraulic backhoe set on a sub-bench is determined. The studies are relevant and are of use in planning and actual cutting of sand-and-gravel mixes by hydraulic backhoes.

Loginov E. V., Volf V. V. Parameters of flow charts for hydraulic backhoe excavation of sand-and-gravel deposits. MIAB. Mining Inf. Anal. Bull. 2022;(8):71-84. [In Russ]. DOI: 10.25018/0236_1493_2022_8_0_71.

E.V. Loginov¹, Cand. Sci. (Eng.), Senior Lecturer, e-mail: loginov_ev@pers.spmi.ru, ORCID ID: 0000-0003-3965-0839,
V.V. Volf ¹, Student, e-mail: volfclavan@mail.ru,
¹ Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.

E.V. Loginov, e-mail: loginov_ev@pers.spmi.ru.

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