通过对东海煤矿32#煤层195典型回采工作面进行现场取样,对其顶板煤岩层力学性质进行实验室测试,获得相应的围岩力学参数。同时采用RFPA软件对深部回采工作面覆岩关键层运动规律进行数值模拟,确定深埋煤层覆岩关键层的破断失稳特征,获得关键层结构和破断特征,为该矿的深部开采支护提供有力保障。 Through the field sampling of the typical mining face of 195 # coal seam # 32 in Donghai Coal Mine, the mechanical properties of coal seam rock mass in its roof are tested by laboratory and the mechanical parameters of the surrounding rock are obtained. At the same time, the RFPA software was used to simulate the movement of the key strata in the deep mining face, to determine the characteristics of the key strata in the deep strata, and to obtain the key strata structure and fracture characteristics for the deep mining support of the mine Strong protection.