1. Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang 550003, Guizhou, China
2. Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
3. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China
4. Guizhou Traffic Planning Survey and Design Research Institute Co. Ltd, Guiyang 550081, Guizhou, China