Cause And Treatment Paln Of The Disease For The Slop Near The Entrance Of The Loess Tunnel

Slope stability study more in our country,but in the loess area,the slope stability due to the special soil conditions of loess research is relatively scarce,especially in the construction of railways and roads,stability of high slope in loess tunnel of the opening of the research has no mature experience,traditional theory analysis will not be able to meet the needs of engineering,the paper according to the special physical and mechanical properties of loess slope guo’s villa tunnel,the numerical modeling analysis by finite element software the high slope stability of the tunnel portal,has played a very good reference for similar engineering construction.This paper adopts FLAC3 D numerical calculation to analyze the mechanical behavior of reinforcement measures for the inlet slope of guo zhuang tunnel,the comparative analysis of slope stability in the condition of natural condition and surrounding rock weakening,and the influence of tunnel excavation on slope stability.In the case of the weakening of the surrounding rock,the slope reinforcement effect of anti-slide pile and anchor rope is analyzed,Theoretical verification of the application of anchor cable anti-slide pile in loess tunnel.This paper discusses the following contents in combination with the research of previous scholars and the practice of the slope support structure of guo zhuang tunnel.(1)In this paper,the mechanism of instability of tunnel hole slope was analyzed by using FLAC3 D finite element software.(2)The finite element software FLAC3 D to guo’s villa surrounding rock tunnel entrance slope of weakening in the anti-slide pile and anchor reinforcement effect were analyzed,the results show that the anti-slide pile supporting effect better.