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

Title of the article: Generalized concept of mining underground development of thick coal seams

Year: 2022, Issue: 5, Pages: 81-91

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)s

Index UDK: 622.275

DOI: 10.26730/1999-4125-2022-5-81-91

Abstract: The urgency of the discussed issue. The task of increasing the efficiency and safety of underground coal mining has always been and remains the main one, the solution of which is devoted to a large number of research works. To date, the greatest success has been achieved in the development of flat seams up to 7 m thick by means of complex mechanization in one layer according to the “Long pillars with roof collapse” system, which is the most common and effective in the world and Russia, the load on the stope reaches 6-8 thousand tons/day. However, when developing flat seams of more than 7 m and thick seams of other ranges of the angle of occurrence, it is currently not possible to achieve such indicators.
The main aim of the study: To establish promising technologies for the efficient and safe development of powerful formations of all ranges of angles of occurrence
The methods used in the study. Establish promises technologies for efficient and safe development of thick seams of all ranges of occurrence angles. The results. Analysis of existing technologies for the development of thick flat, inclined, steeply inclined and steep coal seams. Systematization of promising technologies for the development of thick seams in the form of a generalized concept based on features that determine the leading idea and / or design principles that implement the safety and efficiency of mining. The concept includes excavation technologies: flat seams up to 7 m by means of complex mechanization without separation into layers according to the “Long pillars with roof collapse” system, with division by thickness into horizontal and inclined layers, worked out in descending / ascending order, sequentially or simultaneously-sequentially, with the release of coal from the under-roof or interlayer strata into the worked-out or bottom-hole space and the disintegration of the mass of the produced coal as the working face advances or in advance.

Key words: thick coal seam seam dip angle mining complex mechanization overlying coal production generalized concept

Receiving date: 16.09.2022

Approval date: 01.10.2022

Publication date: 18.10.2022

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