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通过对田坝煤矿 490 4回采巷道围岩变形和围岩内部位移观测 ,获得了软岩巷道围岩变形特征 ,确定了围岩离层范围和松动圈。通过分析明确了巷道软岩类型 ,通过数值分析讨论了合理的支护方式和支护原则。
Through the deformation of surrounding rock and the displacement observation of surrounding rock in 4904 mining gateway in Tianba Coal Mine, the deformation characteristics of surrounding rock of soft rock roadway are obtained, and the range and loose ring of surrounding rock are determined. By analyzing and clarifying the type of soft rock roadway, the reasonable support methods and supporting principles are discussed through numerical analysis.