Hydraulic Fracturing Measurement And Optimization Of Construction For Beijing-Zhangjiakou Intercity Railway Badaling Underground Station

Deep mountain station construction technology, at home or blank, so as to project examples of the background to the construction of its Optimization for underground construction is another exploration and innovation.In this paper, the new Beijing-Zhangjiakou intercity railway station Great underground excavation engineering background, for deep long-span arch structure of the three issues of excavation program, using Midas/GTS finite element analysis software to model its calculated the number of references in the construction process can be the basis and laws. Main tasks are as follows:(1) Measurement by hydraulic fracturing stress surrounding the station site excavation and analysis of the distribution of the numerical simulation for the following set of parameters to provide evidence.(2)For the three kinds of three-arch span deep mountain station excavation program and the numerical simulation, a detailed analysis of surface subsidence, arch top arch and bottom vertical convergence, convergence of left and right side wall level, the scope of the plastic zone generated This number of indicators(3) The proposed construction program optimization, the final draw, each step of the excavation footage 3m hole method for the optimal solution in the proposed scheme.