1. School of Mines, China University of Mining and Technology, Xuzhou 221116, China
2. The State Key Laboratory for Geo Mechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
3. School of Mines and Civil Engineering, Liupanshui Normal University, Liupanshui 553001, China
4. Guizhou Guineng Investment Co., Ltd., Liupanshui 551500, China