大倾角煤层回采巷道因处于显著的各向异性环境中而难以维护。本文用离散元法分析了回采巷道的变形破坏机理和形式，结合现场巷道的围岩松动范围实测，证实巷道的上帮普遍破坏严重，是整个巷道破坏的突破点，应重点防范并采用综合支护进行治理。 Large angle coal seam mining roadway in a significant anisotropic environment and difficult to maintain. In this paper, the deformation and failure mechanism and form of mining roadway are analyzed by discrete element method. Combined with the measured range of surrounding rock looseness of the roadway, it is confirmed that the roadway’s upper gang is generally damaged, which is a breakthrough point of the entire roadway destruction. Protection for governance.