Estimation of methane emission and ensuring the safety of drilling and blasting works in the open coal mining

In the process of deepening mining operations, gas emission increases as a result of an increase in the gas content of coal seams. At the same time, the risk of methane ignition increases, which is important during drilling and blasting operations and the interaction of gas with explosion products. It should be noted that during the explosion, environmental pollution occurs in the form of atmospheric pollution and non-extraction of resources as a result of drilling and blasting operations. One of the objectives of the study was to analyze the negative impact of methane ignition during drilling and blasting operations on the safety and environmental friendliness of mining operations. The mechanism of methane ignition and its interaction with explosion products has been studied in detail, as well as an analysis of methods for reducing the risk of methane ignition and accounting for gas release during drilling and blasting operations has been carried out. During the research, theoretical methods of cognition were used, such as analysis, abstraction and synthesis. As a result of the study, the main risks of methane ignition during drilling and blasting operations, the main ways of environmental pollution were identified, conclusions were drawn about the most effective ways to reduce the risk of methane ignition during drilling and blasting operations and accounting for gas emission during their implementation. To improve the environmental friendliness and safety in the development of coal seams, it is necessary to use degassing, in particular for drilling and blasting operations. The article presents the most promising areas for further research in the field of ensuring the safety and environmental friendliness of drilling and blasting operations, including research in the field of the effectiveness of using various technologies for extracting methane from a coal bed. The positive and negative aspects of these directions are noted.

Arkhipov I.A. Estimation of methane emission and ensuring the safety of drilling and blasting works in the open coal mining. MIAB. Mining Inf. Anal. Bull. 2021;(2—1):92-99. [In Russ]. DOI: 10.25018/0236-1493-2021-21-0-92-99.

Arkhipov I.A., postgraduate student of the Department of Safety and Ecology of Mining Industry, NUST«MISiS», Moscow, Russia, е-mail: condr-95@mail.ru.

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