Authors: E.V. Ignatov, M.A. Tyulenev

Title of the article: Geotechnical justification of geometrical and techno-logical parameters of the «long strips with shortwalls» mining system

Year: 2023, Issue: 2, Pages: 59-87

Index UDK: 622.271.324

DOI: 10.26730/2618-7434-2023-2-59-87

Abstract: The main source of danger in the mining system of long pillars along the strike are various forms of manifestation of mining pressure associated with the management of the roof full collapse. In fact, in this phrase, "control" should be in quotation marks, i.e., we must recognize that the collapse of the roof during the operation of complex-mechanized faces (CMF) is uncontrollable. The problem of roof control has become especially acute in recent years - in connection with transition of mining works to greater depths and increase in the share of commercial reserves attributable to strata with hard-to-collapse roofs, which today, by some estimates, is from 40 to 60%. In science and practice there were formed two directions, aimed at intensification of development in these conditions: this is creation of powerful, high-bearing mechanical supports, and the second one, which existed for about two decades in the times of the USSR, is disintegration of roof rocks. In order to justify the parameters of the proposed technical and technological solutions, it was decided to briefly dwell on the analysis and some own studies of the ways to control the roofing and the condition of the roof massif in the longwall faces.

Key words: mine support underground coal mining development workings mined-out space pillarless mining protection of mine workings rock pressure

Receiving date: 25.03.2023

Approval date: 25.06.2023

Publication date: 24.08.2023

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