Tunnel Construction Monitoring And Numerical Simulation From Convention And Exhibition Center To San Yao Interval Of Xi’an Metro Line2

In recent years, with the development of city subway, the number of loess tunnel isincreasing. City tunnel is along with the rapid development of traffic construction in Chinaand put forward, It has the line is fluent, high space utilization rate, covers an area of lessadvantages, therefore it has been more and more applications. But in construction inevitablyto tunnel surrounding rock and the surrounding environmental impact, Thus the reasonableconstruction method construction, reduce the adverse effects of has very importantengineering significance.In Xi’an metro line2Convention Center to san Yao tunnel project as the researchbackground. On subway tunnel surrounding rock stability evaluation as the main line, toreduce ground settlement and guide the construction for the purpose of. Ensure that thedeformation of surrouUnding nrock Rto metreo tungnel cionsstructtioen on rsurrounding rock in tunnelsand specific requirements, Through laboratory test, numerical simulation and field monitoringmethod of metro tunnel construction process, carry out systematic research.Analysis of the geological conditions of Loess Tunnel; Study on the physical andmechanical characteristics of Loess; Establishment of the loess tunnel finite element model ofconstruction process, simulation in different conditions of rock deformation, comparativeanalysis of factors of surrounding rock deformation, subsidence range; And from that tunnelstability, the optimal design scheme selection; The surrounding rock of the tunnel surroundingrock convergence displacement monitoring, crown settlement monitoring and surfacesubsidence monitoring, And through the field monitoring results analysis of surrounding rockdeformation law caused by the construction. By monitoring data and simulation results of theanalysis, prediction of post-construction settlement of metro development trend, The results of direct guidance of Xi’an metro line2of the construction, and the other metro tunnelconstruction in loess region, as well as other similar tunnel engineering design andconstruction has important real sense.