1. State Key Laboratory of Mining Disaster Prevention and Control Cofounded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
2. Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, College of Civil Engineering & Architecture, Shandong University of Science and Technology, Qingdao 266590, China
3. Department of Civil Engineering, The University of Hong Kong, Hong Kong, China