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以老母坡煤矿3101运输顺槽无充填体沿空留巷工程为研究背景,采用滑移线场理论计算、UDEC数值模拟等方法,分析了近距离采空区下留巷覆岩结构,巷道从掘进、工作面回采到留巷全过程的表面收敛和塑性区分布情况,根据分析结果对原有支护方案进行优化。
Based on the research on the gob-side entry retaining project without filling body in the road 3101 of LaoMaoPo Coal Mine, this paper analyzed the overlying strata structure of the sub-retaining gob in the near goaf by using the theory of slip line field and UDEC numerical simulation. Tunneling and face mining to the whole process of retaining the surface of the convergence and plastic zone distribution, according to the analysis results of the original support program optimization.