中国矿山工程

According to the complex geology and production technical conditions of the 201 and 203 working faces of a mining company, the No.2 coal seam is mined by the comprehensive machinery. FLAC3D is used to numerically simulate the stress distribution and the deformation and damage of the surrounding rock in the mining area during the mining of the 201 and 203 working faces. The numerical simulation results of the 201 and 203 working faces at different stages are taken as the research object. The distribution characteristics of the displacement field, stress field and plastic zone are analyzed, and the appearance rule of the mine pressure in different stages of the working face is revealed.