1. School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
2. State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Jiaozuo, Henan 454000, China
3. MOE Engineering Research Center of Coal Mine Disaster Prevention and Emergency Rescue, Jiaozuo, Henan 454000, China