The Surrounding Rock Monitoring And Finite Element Simulation Of Subway Tunnel

As the development of our country, subway program are leading to importanincrease in the traffic construction of city. More and more subway with different lengthand different types have been built up. The traditional design and construction methodhave been unable to satisfy the realities of construction requirements, therefore, it ivery important for building up subways economically and high qualifiedly to desin thsubway with numerical simulation and summarize subway construction and monitoringtechnology in time.In this paper ,We dissertate the FEM numerical simulation and the monitoringtechnology in subway tunnel construction, and analysis the monitoring data andsummarize disciplinarian of the subway tunnel which is located in ShenZhen districtwhile using large-scale finite element software (MIDAS) for finite element simulationusing three-dimensional model to simulate subway tunnel excavation processconsidering the way of the gradual release of stress on the mechanical behavior osubway construction research. We study the mechanics behavior of tunnel and thcharacteristic of stress and deformation of surrounding rock and supporting system, thenget the development regularity according to time of ground surface settlement, vaulcrown settlement, horizontal convergence and blot axial force. Compare the analysiresults with in-situ testing data, and then get some useful regularities for the designconstruction and research of similar subway tunnels in future, and the supporparameters of the different (anchor) and three kinds of numerical simulation of comparative analysis of displacement get optimal support design and optimize thconstruction of similar projects for the future design and construction provide reference. Finally, the stability of surrounding rock displacement and speed determinthe method of the Shenzhen subway tunnel surrounding rock evaluate the safety andstability, by measuring the actual monitoring and numerical simulation of two aspects othe Shenzhen subway tunnel surrounding rock stability to make comprehensive safetyevaluation.