1. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan, China
2. School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, China
3. School of Safety Engineering, China University of Mining and Technology, Xuzhou, China
4. Key Laboratory of Gas and Fire Control for Coal Mines of Ministry of Education, China University of Mining and Technology, Xuzhou, China