1. Key Laboratory of Coal Gas and Fire Control (China University of Mining and Technology), Ministry of Education, Xuzhou, Jiangsu 221116, China
2. National Engineering Research Center for Coal Gas Control, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
4. School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
5. Department of Vocational and Continuing Education, China University of Mining and Technology, 221116, Xuzhou, Jiangsu, China
6. Xinzheng Coal Electricity Co Ltd, Zhengzhou Coal Industry (Group) Co., Ltd, Xinzheng, Henan, 451100, China