Research on Deformation Control Technology of Shield Tunnel in Subway Section with Ground Fissure
This paper Combined with field investigation and model experiment,the deformation control technology of shield tunnel under the influence of ground fissure is discussed.The results show that with the change of ground fissure distance,the vertical deformation of shield tunnel can be divided into three stages:overall settlement,uneven settlement and stabilization;attention should be paid to the tensile property of the tunnel top in the design,and high-strength concrete should be used to design the bottom to deal with the impact of ground fissure on the tunnel structure.These research results have important reference value for improving the construction quality of subway tunnels and the utilization of underground space.
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