Characteristics of in situ stress field at Qingshui coal mine  

作　　者：Yang Xiaojie Pang Jiewen Lou Haopeng Fan Lipeng 

机构地区：[1]State Key Laboratory of Geomechanics and Deep Underground Engineering,China University of Mining & Technology [2]School of Mechanics and Civil Engineering,China University of Mining & Technology [3]Key Laboratory of Deep Mining and Hazard Prevention,China University of Mining & Technology

出　　处：《International Journal of Mining Science and Technology》2015年第3期497-501,共5页矿业科学技术学报（英文版）

基　　金：provided by the Beijing Natural Science Foundation(No.8142032);the National Natural Science Foundation of China(No.41040027);the State Key Program of National Natural Science of China(No.5113400);the Research Fund for the Doctoral Program of Higher Education(No.20130023110021);the Special Fund of Basic Research and Operating Expenses of State Key Laboratory of Geomechanics and Deep Underground Engineering,China University of Mining&Technology,Beijing

摘　　要：In this study, the characteristics of geological structure at Qingshui coal mine were analyzed. And the hollow inclusion strain cell overcoring method was used to obtain the in situ stress. The effect of in situ stress on the stability of soft rock roadway was analyzed. The results show that the maximum principal stress is in the horizontal direction with a northeast orientation and has a value of about 1.2–1.9 times larger than gravity; the right side of roadway roof and floor is easily subject to serious deformation and failure, and the in situ stress is found to be a major factor. This paper presents important information for developing countermeasures against the large deformation of the soft rock roadway at Qingshui coal mine.In this study, the characteristics of geological structure at Qingshui coal mine were analyzed. And the hollow inclusion strain cell overcoring method was used to obtain the in situ stress. The effect of in situ stress on the stability of soft rock roadway was analyzed. The results show that the maximum principal stress is in the horizontal direction with a northeast orientation and has a value of about 1.2–1.9 times larger than gravity; the right side of roadway roof and floor is easily subject to serious deformation and failure, and the in situ stress is found to be a major factor. This paper presents important information for developing countermeasures against the large deformation of the soft rock roadway at Qingshui coal mine.

关 键 词：Soft rockIn situ stress Overcoring method Roadway stability 

分 类 号：TD32[矿业工程—矿井建设]