1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
2. Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space, Kunming University of Science and Technology, Kunming 650093, China
3. Faculty of Public Security and Emergency Management, Kunming University of Science and Technology, Kunming 650093, China
4. School of Management, Xi’an University of Architecture and Technology, Xi’an 710055, China