1. Student, Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China.
2. Professor, Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China.
3. Professor, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu Univ. of Technology, Chengdu, Sichuan 610059, China (corresponding author).
4. Professor, School of Earth Sciences and Engineering, Nanjing Univ., Nanjing, Jiangsu 210046, China.
5. Senior Engineer, Sichuan Provincial Transport Dept., Highway Planning, Survey, Design and Research Institute, Chengdu, Sichuan 610041, China.