1. School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
2. China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400039, China
3. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
4. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China