1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Geotechnical Engineering Research Institute, Hohai University, Nanjing, China
2. Wuhu Surveying and Mapping Design Institute Co. Ltd., Wuhu, China
3. Key Laboratory of Geological Hazards Mitigation for Mountainous Highway and Waterway, Chongqing Municipal Education Commission, Chongqing Jiaotong University, Chongqing, China