1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China
2. Science and Technology Department, Chongqing Vocational Institute of Engineering, Chongqing 402260, PR China
3. School of Emergency Management, Xihua University, Chengdu, 610101, PR China
4. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, PR China