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采用可充分变形的离散无法,对一个倾斜煤层回采巷道的稳定性进行了分析,并进行了围岩松动范围的测试。在此基础上,提出了锚杆加钢带的巷道综合支护方案。用离散无法及现场围岩位移测试对支护方案的合理性进行了评价。经施工验证,支护方案是成功可行的。根据分析和现场观测,提出了倾斜煤层回采巷道锚杆支护应注意的问题。
The stability of the mining roadway in a inclined coal seam is analyzed by the fully deformable discrete failure method. The range of rock loosening is tested. On this basis, the tunnel comprehensive support scheme with bolt and steel strip is put forward. The rationality of the support scheme was evaluated by discrete inability to measure the surrounding rock displacement. After construction verification, the support scheme is successful and feasible. According to the analysis and the on-the-spot observation, the problems that should be paid attention to in the roadway bolt support are proposed.