1. State Key Laboratory of High-Efficiency Mining and the Safety of Metal Mines, University of Science and Technology Beijing, Ministry of Education, Beijing, China
2. Key Laboratory of Mining Disaster Prevention and Control (Shandong University of Science and Technology), Qingdao, China
3. Institute of Risk Assessment and Control, Guangdong Technology Center of Work Safety, Guangzhou, China
4. Jining Energy Mining Group Anju Coal Mine of Shandong, Jining, China