Case study of informative construction in super-deep foundafion excavation

Based on the project of a cylindrical deep foundation excavation, the informative supervision system for excavation construction and its application under complex geological conditions is introduced. Numerical back analysis and informative supervision is conducted by selecting a reasonable calculating model. Deformation of the retaining structure and variation of the deep confined water pressure induced by dewatering are monitored and analyzed in detail. According to the supervision data, the model is modified and the calculating result is reasonable. The example showed that the informative supervision system is feasible.