1. Professor, Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou Univ. of Technology, Lanzhou 730050, China (corresponding author).
2. Postgraduate Student, Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou Univ. of Technology, Lanzhou 730050, China.
3. Ph.D. Student, Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou Univ. of Technology, Lanzhou 730050, China.
4. Associate Professor, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China.