Research On Assessment Of Geologic Hazards Danger And Countermeasures Of The Highway From Shiyan To Tianshui In Shanxi Borders

In recent years, china is beginning to develop the Midwest by Building a large number of highways.But because of the complex geology and the mountainous terrain, the highway construction always cause a lot of the geological hazards frequently.It makes the road infrastructure, life and property suffer the threat seriously, and it also affects the local economic construction and the social development. Therfore, how to evaluate these geological hazards such as the collapse, the landslide, and the debris flow, is important to prove scientific basis to the highway department for preventing and curing these geological hazards. In this paper, relevant discussions have been dug into this research domain.This article relies on the national highway network under construction Shiyan-Tianshui contact line G7011.The Shiyan-Tianshui contact line goes through the Qinling, fluctuatly and intricately. Being based on frequent occurring collapse, landslide and debris flow as main object to studys,The article,aceording to theoretieal analysis,data acquisition and field survey, researches the elassification, basic feature and formative meehanism, and assesses the status of every kind of geologieal hazards;Behind selecting suitable influence factors of geological hazard and determining weight of every factor by AHP, the article establishes a model of risk evaluation, and uses this model to have a study about the risk prediction and evaluation.it obtains the proportion of each grade about the risk,and the detailed, integrated evaluation form for the construction sector.Finally, using the established risk assessment model, the thesis analyzes the geotechnical conditions to the disaster points, it aslo considers the various geological factors and the engineering geological conditions to take some goog measures targetedly, like the bypass, the water treatment, the protection, the shelter, and so on.