1. School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
2. Yantai Laishan Gaoxin Vocational Training School, Yantai 264003, China
3. School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
4. State Key Laboratory of High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Ministry of Education, Beijing 100083, China