The Analysis Of The Mechanism Of Landslide And Study On Treatment Scheme In A Tourist Highway In Hainan Wannning

For a long time, the fragile geological and geological disasters in the coastal area has been a thorny issue in the process of mountain highway construction for engineers. In recent years, With the rapid growth of economic in the coastal area, natural disaster people met has been more and more for example the landslide, had a great harm to the people's safety of life and property. So in the construction process of highway?railway, study on the mechanism of the formation of landslide systematically,to develop measures to reinforce the landslide effectively have become one of the hot topics the experts, scholars concern about.This article take the landslide in shimeiwan-dahuajiao tourism highway in the city of Wanning as relying engineering and completed the following studies:(1)Investigation and research on engineering geologic condition, analysis of the cause of the landslide.By site survey data acquisition, slope collapse for three reasons:(1)The tilt direction of the bedrock was in line with the tilt direction of the slope, loose structure of the rock-soil and low shear strength are the internal causes;(2)The excavation of the slope toe resulted in the loss of the front retaining and the drainage system of the groundwater were destroyed, are the main external cause;(3)The precipitation increasing the bulk density of rock and soil and reducing the shear strength is also the main external cause.(2)The calculation of slope stabilityEvaluate slope stability in the natural condition and and in the rain condition, calculate thrust by transfer coefficient method. The calculations suggest, The slope is unstable in the present condition,there is a possibility of slope collapsing. There's need to reinforce the landslide.(3) The landslide supporting scheme optimization in relying EngineeringAccording to the project overview of the tourism highway and the condition of the landslide, establish the index system of the landslide supporting scheme optimization suitable for this project. Put forward three landslide treatment options, make the technical and economic comparison and qualitative judgments, mix Fuzzy Synthesize Estimate strength with the analytic hierarchy process, determine the best solution.(4)Slope monitoringIn order to understand the reinforcement effect after the implementation of the project of landslide treatment, need to monitor slope, crunches the monitoring data. The results showed that stability of the slope is better, the effect of the landslide treatment is obvious.