1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo, Henan, China
2. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan, China
3. State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Jiaozuo, Henan, China
4. Changsha Institute of Mining Research Co. Ltd, Changsha, Hunan, China
5. School of Municipal and Environmental Engineering, Henan University of Urban Construction, Pingdingshan, Henan, China
6. Sichuan Coal Industry Group Limited Liability Company, Chengdu, Sichuan, China