To simulate the problem,a numerical analysis method,FLAC3D is applied to analysis the depressurization range of sublevel caving method.

• 应用FLAC3D对分段崩落法的卸压范围进行了数值分析,据此确定出适于卸压的采场结构,由此形成了无底柱分段崩落法开采倾斜矿体的卸压开采方案。