1. School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu Province, China
2. The State Key Laboratory for Geo Mechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou, China
3. Institut Teknologi Bandung, Department of Mining Engineering, Bandung Institute of Technology, Bandung, Indonesia
4. School of Mines and Civil Engineering, Liupanshui Normal University, Liupanshui, China
5. Guizhou Guineng Investment Co., Ltd, Liupanshui, China