1. School of Mines, China University of Mining and Technology, Xuzhou 221116, China
2. College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China
3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China
4. Huzhou New Kaiyuan Gravel Co., Ltd., Huzhou 313000, China
5. High Tech Research Center for Open-Pit Mines, China University of Mining and Technology, Xuzhou 221116, China
6. Department of Sustainability and Planning, Aalborg University, 9000 Aalborg, Denmark