1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, People's Republic of China
2. College of Resources and Environmental Science, Chongqing University, Chongqing 400030, People's Republic of China
3. China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400037, People's Republic of China
4. State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, People's Republic of China