1. Research Associate, Dept. of Geotechnical Engineering and Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji Univ., Shanghai 200092, China (corresponding author).
2. Professor, Dept. of Geotechnical Engineering and Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji Univ., Shanghai 200092, China.
3. Team Lead Resources and Energy, Sweco GmbH, Zeche Katharina 6, Essen 45307, Germany.