1. State Key Laboratory of Coal Resources and Safe MiningChina University of Mining and Technology (Beijing) Beijing China
2. State Key Laboratory for Geomechanics and Deep Underground EngineeringChina University of Mining and Technology (Xuzhou) Xuzhou China
3. School of Mechanics and Civil EngineeringChina University of Mining & Technology (Beijing) Beijing China
4. Department of Mechanical EngineeringStony Brook University Stony Brook NY USA