1. Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing, P.R. China
2. Jiangsu Water Source Company Ltd. of the Eastern Route of the South-to-North Water Diversion Project., Nanjing, P.R. China
3. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, P.R. China