Abstract：Engineering activities are inevitable in the urban region adjacent to the current metro tunnel with the continuous city development and increased needs for land of building. But the deep excavation of the foundation pit adjacent to the tunnel will change the stress state of the neighboring soil. And the deformation of tunnel will be induced which will cause impair to the daily operation and the safety of tunnel. According to the practice of deep excavation neighboring the tunnel in Shanghai，the application of elastoplastic finite element method with Mohr-Coulomb model to simulate different construction stage of deep pit excavation is presented. The results show good agreement with the field test data which show that the finite element method can provide good simulation for this kind of engineering activity and provide convincing computing results for the design and construction. Different construction method，furthermore，is simulated by the numerical method and the calculated results suggest that the rational excavation method will reduce the negative influence of the tunnel and ensure the success of the whole project.
