Authors: M.V. Shinkevich

Title of the article: Calculation of power of pressure arches on mechanized long face support

Year: 2021, Issue: 6, Pages: 57-62

Branch of knowledge: 25.00.21 Theoretical foundations of the design of mining systems

Index UDK: 622.831.3

DOI: 10.26730/1999-4125-2021-6-57-62

Abstract: When excavating coal, processes of rock shifts occur, which, often, have negative consequences and create difficulties for miners. To reduce their negative impact, it is necessary to take into account the regularities of processes arising in the mined rock mass. Knowledge and forecasting of the geomechanical situation, parameters and elements of the processes of shifts caused by the development of the coal seam should be taken into account when designing the excavation section. The purpose of the work is to determine the power of the rock layer exerting pressure on the support. The article presents the results of the construction of the pressure surface during the development of sloping coal seams. To build the pressure surface and its profiles, the Surfer software product was used. The pressure surface is obtained by converting the pressure of the liquid in the posts of the mechanized support into the pressure of rocks and the change in pressure on the lava support during development of the coal bed is shown. An algorithm is proposed to calculate the power of the pressure layer on the lava support, taking into account the wave-like nature of its changes in the length of the column. The capacity of rocks exerting pressure on the support is up to 10 reservoir capacities.

Key words: mountain pressure periodicity cleaning face mechanized support sinusoid

Receiving date: 22.10.2021

Approval date: 05.12.2021

Publication date: 24.12.2021

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