1. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. Xuzhou Coal Mining Group Co., Ltd., Xuzhou 221116, China
3. Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster Prevention, Taiyuan 030024, China
4. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
5. State Key Laboratory of Coal Resources and Safe Mining, Xuzhou 221116, China
6. Shaanxi Yanchang Petroleum Balasu Coal Industry Co., Ltd., Yulin 719000, China