孤岛工作面沿空掘巷位置研究

Research on the position of gob-side entry in the isolated island working face

某煤矿12209工作面为孤岛工作面,该工作面两侧均为采空区。本文利用FLAC3D软件进行模拟,研究了相邻工作面开采对孤岛工作面煤体产生的应力集中,对孤岛工作面沿空掘巷巷道预留的煤柱宽度进行了计算,模拟了多种煤柱宽度下的垂直应力分布情况,确定了沿空掘巷的最佳位置,保证工作面在回采过程中,巷道能够发生较小变形,维持巷道的稳定。

12209 working face of a coal mine is isolated island working face, and both side of working face is goaf. In this paper, In this paper, FLAC 3D is used to simulate the stress concentration caused by mining of adjacent working face. The width of coal pillar is calculated, and the optimum position of the tunnel is simulated, and numerical simulation leads to the vertical stress distribution on the coal pillar and the optimum position of the tunnel is determined. Reserved coal pillar made the roadway small deformation and maintain the stability of the roadway.