Study Of The Geological Disaster Prevention Technology On Loess Highway Tunnel

Loess is terrestrial accumulation from the forth period of earth, with the development of the highways in western area. There will be more and more highway tunnels being constructed in the loess area, meanwhile, the problem also will be frequent, so it is very necessary to study the loess tunnel geological disaster prevention and the controlling measures.The paper, consulted on the basis of geological disasters in constructed tunnels in loess, rely on the project of Ganquan loess tunnel in Baotian highway. With the combination of the geological survey data, design, construction and other factors in the tunnel area, the paper, starting from the engineering characteristics of loess tunnel, give a summary of the disaster-causing theory of geological disasters loess tunnel and proposed a system for predicting and preventing the geological disasters in loess tunnel. The paper totally analyze the reasons that why the tunnel disaster happened in Ganquan tunnel, and optimized the treatment program, at the same time, the paper simulated program through the finite element software and evaluated the effect of the treatment for the disasters.