Abstract: In this paper, an example of the deep foundation excavation project of Qingfeng Park Station in Changzhou Metro Line 2 is presented. The finite element software was used to establish an analytical model for the deep excavation under the artesian groundwater conditions. The stability of the excavation under the confined water conditions and the surrounding environment were analyzed. The effect of deformation was studied to reduce the height of water head and increase the depth of the ground connecting wall by well points to control the stability of the excavated areas and the deformation of the adjacent environment. The results show that the effect of increasing the depth of the ground wall on the stability of the deep excavation under the artesian groundwater conditions and the deformation control of the surrounding environment is far less effective than the arrangement of a depressurization well to reduce the groundwater height. Groundwater pressure reduction measures to prevent surges in the excavated bottom  and the control the deformation of the surrounding environment are also resented in the paper.

Key words: Deep Excavation, Numerical Simulation, Anti-Surge at Excavated Bottom, Environmental Deformation Control