1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
2. Zhengzhou Engineering Co., Ltd. of China Railway Seventh Group, Zhengzhou 450052, China
3. State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing 400037, China
4. China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400037, China