Research On The Rock Deformation Characteristics And Stability In Imports Of Zhengyang Tunnel

This paper mainly to imports of the Zhengyang two lane tunnel (two-way four-Ian e) highway tunnel, rely on the use of on-site monitoring and on-site measurement data o f dynamic statistical information and analysis,first of all, summed up the deformation ch aracteristics of the tunnel, Analysised the factors of the impact of its deformation charac teristics, and ,through the scene of examples Forecast, Specified the Geological forecast ing method and its accuracy in predicting rock geology and geological prediction in adv ance the role of rock stability, thus, in the surrounding rock that Zhengyang Tunnel and the corresponding parameters supporting the stability and deformation characteristics; S econdly, through the tunnel entrance in Zhengyang separate paragraph karst funnel of th e holes to do a numerical simulation of FLAC-3D respectively, Supporting parameter o ptimization, and the different characteristics of the surrounding rock to choose their cou nterparts more reasonable method of excavation. Through two lanes (two-way four-lane ) highway tunnel at the scene monitoring the situation,analysised of their deformation c haracteristics and stability, among them, through a more specific analysis of the tunnel e ntrance in the karst funnel of the numerical simulation method optimized three-dimensi onal numerical simulation of flac-3d, draw: under the overall situation circumstances of rock in the tunnel relatively good circumstances, using the method of excavation of torsi on moving less frequently to excavation of the tunnel rock is helpful to stable,because d -eformation and stress values of rock in tunnel are smaller, on the contrary, in the relati vely poor rock tunnel of the overall situation, excavation by more steps approach to the tunnel excavation is conducive to Stability of rock,because deformation and stress value s of rock in tunnel are smaller, Ultimately, through a summary analysis of this typical t wo lanes (two-way four-lane) highway tunnel, got some conclusions and recommendati ons related to the study , to provide reference of similar situations in the future the const ruction of the project.