钻孔岩芯声发射法在张北能源储气库地应力测量中的应用  

Application of Core Acoustic Emission into In⁃Situ Stress Measurement of Zhangbei Energy Storage Reservoir

作　　者：马春德 吕志海[2] 谭观霜 MA Chunde;LÜZhihai;TAN Guanshuang(Advanced Research Center,Central South University,Changsha 410083,Hunan,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学高等研究中心,湖南长沙410083 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿冶工程》2023年第5期22-25,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金面上项目(52074352);湖南省自然科学基金(2023JJ30680)。

摘　　要：使用新型定向岩芯声发射方法,对河北张北综合能源项目储气库建造工程区域进行地应力测量,结果表明,3个钻孔对应的90 m埋深处的地应力以水平构造应力为主,3个钻孔的最大主应力方向基本一致,均为近南北方向。使用圆周波速各向异性分析法进行验证,结果显示,圆周波速各向异性分析法得到的最大主应力方向与钻孔岩芯声发射法得到的结果吻合,进一步验证了钻孔岩芯声发射法测量结果的正确性。A new directional core acoustic emission technique was used to measure in⁃situ stress of the gas storage reservoir construction area of the Zhangbei Comprehensive Energy Project in Hebei Province.Results show that three boreholes buried at depth of 90 m have the corresponding in⁃situ stress dominated by horizontal structural stress,with the maximum principal stress approximately in the same north⁃south direction.In addition,the circumferential wave velocity anisotropy analysis method was conducted for verification,and the results show that the maximum principal stress is in a direction consistent with the result obtained from the acoustic emission testing of borehole core,which further verifies the correctness of the measurement by acoustic emission technique for the borehole cores.

关 键 词：地应力 钻孔岩芯 声发射法 圆周波速各向异性分析法 

分 类 号：TD311[矿业工程—矿井建设]