1. State Key Laboratory of Ming Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan, Anhui 232001, People’s Republic of China
2. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, People’s Republic of China
3. Linhuan Coal Preparation Plant, Huaibei Mining Group, Huaibei, Anhui 235000, People’s Republic of China