钱营孜煤矿井下地应力实测及应力场分布规律分析

    Underground Ground Stress Field Measurements and the Analysis of Stress Fields Distribution Laws in Qianyingzi Coal Mine

    • 摘要: 地应力是影响巷道围岩稳定性的重要因素之一,采用包心空体应力解除法对钱营孜煤矿完成了3个测点的地应力测量,得出钱营孜煤矿地应力场的分布规律。实测结果表明:大断层附近会产生应力集中,并对地应力的大小和方向有明显的影响,整个井田范围被分割为3个区域;钱营孜煤矿的地应力场以水平应力为主,水平应力对巷道掘进的影响具有较为明显的方向性。

       

      Abstract: Ground stress is one of the important influencing factors to the roadway surrounding rock stability in coal mines. The ground stress of Qianyingzi Coal Mine is measured by the hollow inclusion stress-relief method. Then distribution law of ground stress field is obtained. The result shows that the stress concentrates near the big fault can affect the size and the orientation of stress obviously, and the whole field is divided into three areas. The horizontal ground stress is the major principal stress in Qianyingzi Coal Mine, which can affect the orientation of roadway driving obviously.

       

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