1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong Province, China
2. WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Kalgoorlie, Australia
3. State Key Laboratory of Strata Intelligent Control and Green Mining Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, Shandong Province, China