[1]School of Resources and Safety Engineering,Central South University,Changsha 410083,China;
[2]Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;
[1]School of Resources and Safety Engineering,Central South University,Changsha 410083,China;
[1]School of Resources and Safety Engineering,Central South University,Changsha 410083,China;
[2]Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;