Abstract: In geotechnical engineering, the deep excavation is one of the most complicated engineering which have the complicated factors and conditions. The hydrogeology, meteorology, surrounding environment, supporting structure type, excavation consequences, etc. could all have a potential great impact on the safety of foundation excavations. Even, there might be a potential significant property loss and strong social impact, the safety monitoring of the deep excavation has become the most important means of the real time monitoring of the safety during the excavation. This paper presents a construction monitoring of the deep excavation of Jiangmen Avenue in the Jiangmen Station supporting facility project of the Zhuxi Comprehensive Transportation Hub. A variety of support types and the deep excavation construction monitoring and foundation deformation control are analyzed and discussed in the paper. Under the condition of the cumulative deformation and deformation rate index exceeded the design control value, the risk of the deep excavation during the construction process was effectively controlled, which provides a reference for the similar projects in this deep soft soil area.

Key words: Deep Excavation Engineering, Monitoring, Soft Soils, Excavation Safety