2LIU Song-yu, Roman D. Hryciw, Evaluation and quality control of dry-jet-mixed clay soil-cement columns by standard penetration test [J]. Journal of The Transportation Research Board, 2003, 1849: 47–52.
3Shen S L, Miura N. Soil Fracturing of the surrounding clay during deep mixing column installation[J].Soils and Founda- -tions, 1999,(5): 39, 13–22.
4Chai J C, Liu S Y, Du Y J, Field Properties and Settlement calculation of soil cement improved soft ground-A case study[J]. Lowland Technology International,2002,4(2):51–58.
5Johansson A W. Observation of pore pressure and soil movements during lime column installation[J]. Dry Mix Method for Deep Soil Stabilization, 1999, 252–258.
6Vriend C Kort, J C M, Colmorgen E. Soil improvement at the Botlek Railway Tunnel Project, Rotterdam[J]. Soft Ground Technology 2000, ASCE Geotechnical Special Publications, 2000 ,112, 472–483.
