Numerical simulation analysis of surrounding rock displacement of double shield tunnel

Tunnel engineering is an important part of the development and utilization of underground space especially in the city. To alleviate traffic pressure, improve the efficiency of traffic greatly. This paper will use the numerical simulation software FLAC3D, to simulate the Subway tunnel excavation. Analysis of whether considering fluid solid coupling under two conditions of surrounding rock displacement distribution and the relationship between the settlement and the position of the nodes. The results show that, the tunnel of surrounding rock vault settlement is closely related to the node location, The closer from tunnel excavation area, the final settlement amount is large.