1. Professor, Key Laboratory of Geomechanics and Embankment Engineering in Ministry of Education, Hohai Univ., Nanjing 210098, China (corresponding author).
2. Ph.D. Candidate, Key Laboratory of Geomechanics and Embankment Engineering in Ministry of Education, Hohai Univ., Nanjing 210098, China.
3. Professor, Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing Univ., Chongqing 400045, China.