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针对崔木煤矿北翼回风大巷底鼓量大、两帮强烈内移的变形特征,在分析深部节理裂隙围岩大变形机理的基础上,提出了高预紧力全长锚固锚杆+帮部锚索二次补偿支护技术。井下试验结果表明,巷道围岩累计变形量较小,该技术方案可行。
Based on the analysis of the deformation mechanism of surrounding rock mass in deep jointed fractures, aiming at the large amount of bottom drum of return airway in the north wing of Cui mu coal mine and large deformation of two strong internal displacements, Secondary compensation and support technology of anchor cable. The downhole test results show that the cumulative deformation of surrounding rock is small and the technical scheme is feasible.