Study On The Landslide Stability Analysis And Treatment Scheme Optimization

The terrain and landscape of Shaanxi Province are complicated and varied,landslide geological disasters occur frequently,and landslide always threaten people's life and property,and bring a great deal of influence to engineering construction.With the further acceleration of economic construction,the engineering construction also increased.The Hanbin District of Ankang city located in the mountain area of Qinling and Bashan,Mountain more and less land,and there is a larger number of slope engineering.Also a lot of landslides are produced.Whether to find the most optimal landslide treatment scheme,taking account the safety and cost,it is urgent to research on landslide.At the same time to protect local people's life and property safety and economic development is of great significance.This paper based on the landslide treatment scheme of Niuti Town,Hanbin District,systematically researches the geological condition,essential characteristics,stability analysis and optimal scheme of treating.The specific contents are as follow:(1)Geological conditionIntroduce the landslide engineering geological conditions of Niuti Town,Hanbin District,in order to prepare the landslide stability analysis and optimization of landslide treatment scheme for the following.(2)The analysis of landslide stability evaluationThrough collecting the relevant data of landslide,site survey,laboratory tests,analysis of regional geological background conditions,and refer to the relevant engineering experience,determine the physical and mechanical parameters of slip soil,use qualitative method and quantitative method separately to evaluate the stability of the slopes.Based on the theory of MIDAS / GTS finite element strength subtraction method,simulate the stability of this landslide,the results are highly consistent with the calculation value using transfer coefficient method.In order to protect the safety of teachers and students' life and property in the local school,it is in urgent need of to do treatment for this landslide.(3)Study on the landslide treatment scheme optimizationFirstly,based on the concrete engineering practice of landslide mass,refer to the evaluation results of landslide stability,with three indicators of assessment of landslide treatment: economy,risk and governance effect,then analysis the landslide's prevention and control measures,and give three kinds of treatment schemes.Secondly,using the fuzzy analytic hierarchy process to do optimizing selection for these three kinds of treatment schemes.Finally,according to economy,risk and governance effect indicators,compare these three treatment schemes,to further verify the reliability of the optimizing selection results by using analytic hierarchy process.Finally determined,the most optimal scheme for Niuti Town landslide treatments is scheme one: anti-slide pile + retaining wall + ramming pile + cut side + cut off dewater.