The shield tunnel method is a way that widely used in tunnel build. However, the ground surface displacement and deformation because of tunnel excavation will bring a series of affections in our engineering. By using the finite element model of different tunnel excavation depth, different elastic modulus and different tunnel diameter of the tunnel, we predicted it correctly. Finally, we get the relationship between the surface displacement and the depth of tunnel excavation, diameter, strength of soil.

As we all know, the thickness of the shield lining segments, reinforcement ratio and other parameters of the design have a direct impact on the economics of the project. We have taken a model of parametric analysis simulation and by the way of changing the parameter of lining segments to research their deformation and stress. Finally, we get the relationship between the characteristic parameters and the deformation and stress of the lining segments, and summed up the characteristic parameters which are more influential.