1. Professor, Dept. of Geotechnical Engineering and State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji Univ., Shanghai 200092, China (corresponding author).
2. Ph.D. Student, Dept. of Geotechnical Engineering and State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji Univ., Shanghai 200092, China.
3. Senior Research Fellow, Dept. of Chemical Engineering, Univ. of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
4. Lecturer, College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry Univ., Yangling 712100, China.