1. State Key Laboratory Breeding Base for Mining Disaster Prevention and Control, Shandong University of Science and Technology 1 , Qingdao 266590, China
2. College of Mining and Safety Engineering, Shandong University of Science and Technology 2 , Qingdao 266590, China
3. Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources 3 , Qingdao 266101, China
4. Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University 4 , Fukuoka, Japan