1. Department of Geotechnical Engineering and Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, People’s Republic of China
2. China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Guangzhou, People’s Republic of China
3. Shannxi Key Laboratory for Property and Treatment of Special Rock and Soil, China Jikan Research Institute of Engineering Investigations and Design Co., Ltd., Xi’an, People’s Republic of China