关键词: 大采高综采工作面, 末采阶段, 回撤通道, 断层, 数值模拟

Abstract: Taking 1007 working face of Fucun Coal Mine as the background, the key technology of pre-excavating retreat passage is studied through numerical simulation and field measurement. Through numerical simulation analysis of surrounding rock deformation at different distances between the withdrawal passage and the fault, it is determined that when the withdrawal passage is 3 m away from the fault surface, the roadway is less affected by the dynamic pressure of the working face, and the support parameters of the withdrawal passage are determined. Through monitoring the displacement of roof and floor and two sides of roadway, it is proved that the supporting scheme is feasible and can meet the requirements of support withdrawal.