1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400044, China
2. Department of Civil Engineering, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400044, China
3. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400044, China (Corresponding author), e-mail: zhouxiaopinga@sina.com, https://orcid.org/0000-0003-1551-6504