Numerical Simulation of Ground Settlement Caused by Overlapping Tunnel Shield Construction and Measures of Stratum Reinforcement

In order to predict and control the ground settlement caused by the overlapping construction of the upper and lower lines of the shield tunnel in Foshan area effectively, this paper takes the overlapping section of the left and right lines of the Ludao Lake-Liantang segment of Foshan Metro Line 2 as the main research object, simulate the construction process of overlapping sections by finite element software and combined with field measured data, predict the ground settlement caused by the overlap section construction effectively, so as to take targeted control measures and verify the reliability of the formation reinforcement measures. The results show that reasonable reinforcement measures can be taken to effectively control the ground settlement before the construction of the overlapping section.