1. Key Laboratory of Coal Methane and Fire Control, Ministry of Education, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
2. School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
3. National Engineering Research Center for Coal Gas Control, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
4. School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China