Authors: A.M. Cherdantsev, A.A. Sidorenko

Title of the article: The prediction of methane emission on longwall panels by taking into account the influence of geomechanical processes

Year: 2017, Issue: 5, Pages: 106-110

Branch of knowledge: Earth sciences

Index UDK: 550.423

DOI: 10.26730/1999-4125-2017-5-106-110

Abstract: The relevance of studies carried out for studying gas dynamic processes on longwall panels is shown. The analysis of results of modernization of coal mines and modern conditions of coal mining in longwall panels at intensive mining of gas-bearing seams is made. The methodical approach for the forecast of gas emission in longwall panels based on assessment of a roof-caving increment of the main roof is offered. The method of calculation of primary and subsequent roof-caving increment of the main roof is presented. Graphic depen-dences of a roof-caving increment of the main roof on the speed of a longwall coal face advancing are given at various strength of roof strata and the analysis of influence of various factors is made. The analysis of dynamics of gas emission for five longwall panels is made and frequency of the maximum gas emission in the conditions of the mine of V.D. Yalevsky is established. The reasons of wide range of values describing the period of the maximum gas-emission are specified and geological and mining factors defining the frequency of geomechanical processes in undermined strata are given. The conclusion is drawn that there is a need to consider the interrelation of geomechanical and gas dynamic processes in longwall panels of gas mines when forecasting gas emission and developing effective ways of management of methane emission in excavations.

Key words: underground mining coal seams methane emission geomechanical processes roof-caving increment gas drainage gob area gas management

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