Abstract: This paper presents the numerical analysis results on the effect of a large deep excavation on the Metro station excavation using a commercial finite element software FLAC3D. The subsidence as well as the stress in the ground adjacent to the excavation, the deformation and the stress distribution in the supporting structure are investigated. The results indicate that the deep excavation can affect the performance of the Metro station foundation excavation. At locations close to both excavations, large ground subsidence and the stress in the supporting structures are expected but these values are within the acceptable zone.

Key words: Deep Excavation, FLAC3D, Numerical Analysis, Excavation Deformation