双合矿井地应力分布规律与地质构造作用分析  

Analysis on In-situ Stress Distribution Law and Effect on Geological Structure in Shuanghe Mine

作　　者：李登月 孙立田 LI Deng-yue;SUN Li-tian(Shuanghe Coal Mine,Feicheng Mining Group Mining Management Service Co.,Ltd.,Jining 272600,China)

机构地区：[1]肥城矿业集团矿业管理服务有限公司双合煤矿,山东济宁272600

出　　处：《煤炭技术》2020年第9期72-75,共4页Coal Technology

摘　　要：应用空芯包体三维应力解除法对双合矿井区域内3个测点进行了地应力原位测试。结果表明:井田内最大主应力方向平均为220.89°,以水平应力为主,矿井地应力量级大部分在20 MPa以上,属于典型的高-超高应力区。井田内地应力方向性显著,最大水平应力为垂直应力的1.25~1.46倍;井田内地应力大小具有较强的差异性,最大水平主应力为最小水平主应力的1.31~2.20倍。井田内应力场总体趋于NE-SW方向,整个区域应力场以水平应力为主导,对矿区的构造发育有控制作用,其分布与现场地应力测试结果基本一致。The three-dimensional stress relief method of hollow core inclusion is applied to the in-situ stresse measurement at three different measuring points in the area of Shuanghe mine.The results have shown that the average angle of the maximum principal stress in the field is 220.89°,which is mainly horizontal stress. Most of the in-situ stress level is above 20 MPa, belonging to the typical high-ultra high stress area. The maximum horizontal stress is 1.25 to 1.46 times of the vertical stress in the well field, and the maximum horizontal principal stress is 1.31 to 2.20 times of the minimum horizontal principal stress,indicating relatively obvious directionality and differential. The stress field in the mine field generally tends to distribute in an NE-SW direction, with horizontal stress as the dominating one, controlling the structural development of the mine area, whose distribution is basically consistent with the in-situ stress test results.

关 键 词：双合矿井 地应力 地质构造 空芯包体应力解除法 

分 类 号：TD31[矿业工程—矿井建设]