Abstract: Due to the complication and variation of geomaterials and the limitation of various prediction models, it is very difficult to accurately predict the impact of deep excavation on the adjacent ground, utilities and buildings based only on theoretical and empirical approaches. This paper presents a case history of the comparative studies on the deep excavation supporting structure between the theoretical analysis and construction monitoring data. The soil mixing wall (SMW) supporting structure in the deep excavation process was simulated by the commercial geotechnical software Lizheng version 7.0PB1, the simulated data then were compared with the construction instrumentation data. It is therefore verified that the SMW could be adequately used as the supporting structure for the deep excavation.

Key words: Deep Excavation, Soil Mixing Wall Method, Construction Monitoring, Comparative Analysis