1. School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China
2. Engineering Research Center of Ministry of Education for Coal Mine Disaster Prevention and Emergency Relief, Henan Polytechnic University, Jiaozuo 454000, China
3. Faculty of Safety Engineering, China University of Mining & Technology, Xuzhou 221001, China
4. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China