1. College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi, China
2. School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan, China
3. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo, Henan, China
4. State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Jiaozuo, China