1. State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology, Xuzhou, China
2. Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou, China
3. School of Safety Engineering, China University of Mining and Technology, Xuzhou, China
4. Mining College, Guizhou University, Guiyang, China
5. College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, China