4.2　Study on the Effects of Large Diameter Shield ...

4.2　Study on the Effects of Large Diameter Shield Crossing on Embankment Subsidence and Stability

In this section，the shield tunneling of Line S of Nanjing Wei San Road Crossing River Channel Project through the bank section of the north bank of the Yangtze River is taken as the background，and the finite difference software FLAC3D is used to numerically simulate the construction process of the shield.The model verification is carried out according to the previous settlement monitoring results，and the influence of shield tunneling on the surface deformation and stability of the bank is analyzed.The differences strata deformation and overall stability under different grouting effects，bank slope conditions and tunnel buried depths are compared.