1. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China
2. Kunming Prospecting Design Institute, China Nonferrous Metals Industry Co., Ltd., Kunming 650051, China
3. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
4. Yunnan Key Laboratory of Geotechnical Engineering and Geological Hazards, Kunming 650051, China