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基于煤矿急倾斜厚煤层回采巷道变形和破坏严重的情况,通过数值模拟和现场实测相结合的研究方式对2303工作面回采巷道进行了研究,分析了急倾斜厚煤层分层开采过程的围岩运动规律,揭示回采巷道应力集中区域随顶板旋转、滑移、断裂、垮落不断变化.指出了支护的重点区域是巷道左上角(左帮)和顶板.根据巷道的变形特征,提出了在原支护基础之上架设底板锚杆来改善巷道后期的支护状况,通过实践表明该方法是有效的.“,”Based on coal mine steeply inclined thick coal seam mining deformation and severe destruction, through the combined research numerical simulation and field measurement way, the 2303 mining face roadway was studied, the deeply inclined thick coal seam layering of the surrounding rock motion law was analyzed, rotation, the phenomena that sliding, fracture and caving roof constantly changing in the roadway, the stress concentration area was revealed. The key area of the roadway supporting was left upper corner and roof. According to the deformation characteristics of roadway, the original supporting anchor erection floor improving the late supporting condition technology was put forward, the practice showed that this method was effective.