The Overcoring Technique for Precise Measurement of In Situ Rock Stress at Great Depths:Challenges and Solutions  

作　　者：Peng Li Yan Liu Meifeng Cai Shengjun Miao Yuan Li Yunjin Hu Mostafa Gorjian 

机构地区：[1]Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China [2]Beijing Key Laboratory of Urban Underground Space Engineering,University of Science and Technology Beijing,Beijing 100083,China [3]College of Civil Engineering,Shaoxing University,Shaoxing 312000,China [4]Department of Earth,Ocean and Atmospheric Sciences,University of British Columbia,Vancouver,BC V6T 1Z3,Canada

出　　处：《Engineering》2025年第3期9-15,共7页工程(英文)

基　　金：financially supported by the National Key Research and Development Program of China(2022YFC3004601);the National Natural Science Foundation of China(52204084);the Science,Technology and Innovation Project of Xiongan New Area(2023XAGG0061).

摘　　要：1.Introduction Various geological phenomena on the surface and in the interior of the Earth,as well as their associated physical and chemical pro-cesses,are closely correlated with the action of in situ rock stress[1-5].Understanding the rock stress state at great depths is not only an indispensable foundation for solving scientific problems associated with geology,geophysics,and geodynamics-such as plate-driving mechanisms,the earth’s energy equilibrium,earth-quake mechanisms,and tectonic activities-but also a necessary prerequisite for the evaluation,exploitation,and disposal of deep energy and resources,such as coal and metal minerals.Due to the complexity and uncertainty of the origin of in situ rock stress,it is a difficult quantity to evaluate,in comparison with other rock properties.Currently,reliable information on the stress state in a region can only be determined through field stress measurement.Therefore,a variety of stress measurement techniques have been developed and applied worldwide to provide information on crus-tal contemporary stress at specific depth ranges[6].

关 键 词：situ rock stress earths energy equilibrium plate driving mechanisms earthquake mechanisms overcoring technique geological phenomena physical chemical processes 

分 类 号：P553[天文地球—构造地质学]