1. Taiyuan University of Technology, School of Mining Engineering , Taiyuan, Shanxi Province, 030024, China
2. Taiyuan University of Science and Technology, College of Safety and Emergency Management Engineering , Taiyuan, Shanxi Province, 030024, China
3. Anhui University of Science & Technology, School of Energy and Safety Engineering , Huainan, Anhui Province, 232001, China
4. Huajin Coking Coal Co. Ltd , Shaqu Coal Mine, Lishi, Shanxi Province, 033315, China