1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China
2. State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China
3. Mining Technology Institute, Taiyuan University of Technology, Taiyuan 030024, China
4. School of Energy and Materials Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
5. Department of Civil Engineering, Ningbo University, Ningbo 315211, China