Research on the numerical simulation of the subway shield construction in Kunming

Based on the theory of soil-structure coupling and shield construction,the research uses the hyperbolic model and Midas-GTS finite element software to simulate the working condition in tunnel construction of somewhere in Kunming metro first-phase project Line 1.The displacement field distribution of tunnel in metro construction stage and the stress field distribution of supporting system are obtained.The result shows that the displacement value,stress value and strain value of tunnel system are within the control range and thus the production process can be operated in safety. 〖WT5HZ〗