祁东煤矿地应力测量成果分析  

The Analysis of the Results of Stress Measuring in Qidong Coal Mine

作　　者：吴俊松[1] 吴玉华[2] 傅昆岚[1] 

机构地区：[1]皖北煤电集团公司祁东煤矿,安徽宿州234000 [2]皖北煤电集团公司,安徽宿州234000

出　　处：《淮南职业技术学院学报》2004年第3期32-34,共3页Journal of Huainan Vocational Technical College

摘　　要：采用应力解除法在祁东矿 - 4 0 8、- 5 0 0和 - 6 0 0三个水平进行了原岩应力测试及计算 ,确定了祁东井田主应力的大小和方向以及三个主应力随深度的变化关系 :祁东煤矿的地应力场以水平构造应力为主 ,最大主应力方向为北东向到近于东西向 ;中间主应力为垂直应力 ,垂直应力接近于上覆岩层的重量 ;最大主应力梯度值为 0 .0 2 9MPa/m ,垂直应力梯度值为 0 .0 2 6MPa/m ,最小主应力梯度值为 0 .0 2 3MPa/m ;地应力测量结果为研究祁东矿区域内各点的应力状态及应力场分布提供了理论依据。Way of stress reliving was adopted in primary rock stresses testing and calculating in the level with the depth of -408,-500 and -600 meters in Qidong coal mine. The magnitude and the direction of principal stress and the relation that three principal stress change with the depth varying has been determined in Qidong mine. The great mass of the stress in earth stress field is horizontal tectonic stress in Qidong coal mine. The direction of the maximal principal stress is from northeast to east or west. Middle principal stress is vertical stress which is equivalent to the weight of the upper terrane. The gradient of the maximal principal stress is 0.029Mpa/m. The gradient of the vertical stress is 0.026Mpa/m, and the gradient of the minimum principal stress is 0.023Mpa/m.The measuring result has been offering theoretic foundation for researching the distribution of stress state and stress field at each point in Qidong mine.

关 键 词：原岩应力 应力解除法 主应力 

分 类 号：TD163[矿业工程—矿山地质测量]