The Study Of Protection Policy To The South LiDu Of The National Highway Of HuRong

The national highway of HuRong is a backbone artery of the national west-east direction, and the traffic main artery of the development of the West Regions, Following the rising of our country high grade highway networked, the problem about geology of mountainous area of the highway building is becoming outstanding .So the paper puts forward the integrated control countermeasure to the slope stability, through taking the state specific geological environment of EnShi area as the background, Regarding the south LiDu landslide as the research object, and using the method of finite element analysis .At present, there are a lot of methods of evaluating slope stability , which are usually adopted at home and abroad , but all these ways can be inductive into qualitative evaluation > quantitative evaluation -. half- qualitative evaluation and half-quantitative evaluation, and now we adopt many traditional disposable methods to protect the slope, such as: unloading to the shelter of the landslide, propped up and block, draining off water.It is to use finite element method to calculate the stress within the slope in this paper, and get the normal stress and tangent stress of the slope sliding surface directly, and then calculate the stability coefficient of the slope. Because the finite element method consider the relation of stress-strain of rock soil, So, it is more accurate and rational than other methods that it calculates side slope stability coefficient .The paper takes the road bed landslide as an synthetical protect system to the prevention of theslope, Through the analysis of the origin cause of formation and stability analysis of different position, and adopting different methods to carry on rational and effective protection after studying different positions, In order to put forward the synthetical protection system .Through the study to the slope stability of South LiDu and the protection policy, there would be an extensive reference value to the building of HuRong expressway located in the EnShi area and YiWang railway.