1. School of Energy and Mining Engineering, China University of Mining and Technology, Beijing, China
2. Energy and Mineral Engineering, G3 Center and EMS Energy Institute, Pennsylvania State University, University Park, Pennsylvania, USA
3. School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Australia
4. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
5. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, China