Authors: B.A. Anferov, L.V. Kuznetsova

Title of the article: Technological schemes of underground mining of coal seams prone to spontaneous combustion

Year: 2023, Issue: 1, Pages: 95-101

Branch of knowledge: 2.8.8 Geotechnology, mining machines

Index UDK: 622.275

DOI: 10.26730/1999-4125-2023-1-95-101

Abstract: The urgency of the discussed issue. The most common type of accidents in mines are fires which account for more than 50% of all recorded incidents (0.083 per 1 million tons of coal mined); endogenous fire hazard is 0.031. When developing coal seams prone to spontaneous combustion, opening and preparation of a coal seam is allowed by in-seam workings with special measures to ensure safe mining operations. The Safety Rules do not regulate the procedure for mining the extraction pillars in the mining panel of a separate coal seam, however, the ascending order of mining the extraction pillars makes it possible to start mining operations only after the mining panel has been fully prepared; while the top of the panel will remain open for a long period sufficient for spontaneous ignition of coal.
The main aim of the study: Improving the efficiency and safety of underground mining of coal seams that are prone to spontaneous combustion by application of a rational scheme for opening and preparing the reserves of the extraction area.
The methods used in the study. Analysis of existing schemes for opening and preparing coal seams prone to spontaneous combustion and the analogy method.
The results. The descending order of working out the extraction area does not require mining of the entire scope of opening workings, which reduces the capital costs attributable to the start of mining operations. The reserves will be opened up as necessary to deepen the coal extraction operations. This will provide more reliable prevention of the occurrence of endogenous fires in the development of seams prone to spontaneous combustion of coal.

Key words: coal mining endogenous fire hazard opening and preparation of coal seams top-down order of extraction area mining

Receiving date: 24.10.2022

Approval date: 15.01.2023

Publication date: 30.03.2023

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