1. Associate Professor, School of Civil Engineering, Hefei Univ. of Technology, Hefei 230009, China (corresponding author).
2. Graduate Student, School of Civil Engineering, Hefei Univ. of Technology, Hefei 230009, China.
3. Professor, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Univ., Chengdu 610065, China.
4. Assistant Professor, School of Civil Engineering, Hefei Univ. of Technology, Hefei 230009, China.
5. Professor, Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan Univ. of Science and Technology, Xiangtan 411201, China.
6. Professor, State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.