摘要
为了了解潘北煤矿上覆围岩和岩层的稳定性情况，并且研究该矿地应力场的分布特征，利用空心包体应力解除法对该煤矿一490m东翼第二抽水巷进行了地应力测量，获得了该矿的三维地应力的大小和方向。结果表明，该区域地应力以水平应力为主导，最大主应力近东西走向，是最小主应力的1．72～1．75倍；中间主应力与垂直方向的夹角平均为6．39°，这些与该矿区的地质构造有很大的关系。根据实测的地应力结果对原支护方案进行了优化，且优化效果明显。
In order to understand the stability condition of overlying .strata and rocks of Panbei Coal Mine and research the distribution of geo - stress filed. Hollow inclusion stress relieving method was used to measure geo - stress of No. 2 water pumping roadway at - 490 m in east wing of Panbei Coal Mine, the size and direction of three - dimensional geo - stress was obtained. Results showed that hori- zontal stress was larger than vertical stress in this coal mine, maximum principal stress was near to east - west, which was 1.72 to 1.75 times of the minimum principal stress. The angle of medium principal stress and vertical stress was 6.39~, which is a great rela- tionship with the geological structure of coal mine. Original supporting scheme was optimized by the measuring results of geo - stress, and the optimization effect is obvious.
出处
《煤矿安全》
CAS
北大核心
2014年第4期169-171,175,共4页
Safety in Coal Mines
关键词
地应力测量
应力解除曲线
地质构造
均匀
优化
stress measurement
stress relief curve
geological structure
uniform
optimization
