Research On Construction Method Of Water Rich Tunnel In Loess Area

Loess is widely distributed in China,covering a total area of 635 thousand km2,the soil is often encountered in northern China in the construction of our country,but in loess area rich soil rock interface construction technique of water tunnel exploration is relatively small,this paper from this point to carry out the relevant research work,has important practical significance to explore the construction technology this type of tunnel in water rich loess.This paper is mainly to the North highland railway Huang Hanhou tunnel as the engineering background,the construction technology of water rich tunnel in loess area is studied.The main research contents are as follows:1.Through the tunnel excavation is simulated by FLAC3 D,analyze the mechanical properties of the Loess tunnel.2.Through the advance geological prediction and field monitoring technology,to make pre judgment on the risk,put forward the security measures,and to adjust the parameters to ensure the safety of the structure.3.The loess tunnel construction methods are described,and the construction process of the heavy and difficult to carry out a detailed analysis,and different construction processes on the deformation of the tunnel to do a comparative analysis.This paper has very important significance for guiding the construction of loess tunnel.