Stability Analysis And Treatment Scheme Optimization Of Northern Landslide In Erzhuangke Village,Yan'an City

The Yan'an area is located in a typical area of the Loess Plateau.The geological environment is complex and variable,and geological disasters occur frequently.With the rapid development of China's economic construction,infrastructure construction has been carried out on a large scale in the Yan'an area.Due to limited land resources in Yan'an area,limited by geological environment conditions,a large number of excavation and slope cutting during the construction process have destroyed a large number of original geological environment conditions of the slope,resulting in a decline in slope stability and causing geological disasters such as landslides.Therefore,accurate analysis and evaluation of the current stability status of the landslide,and scientific and reasonable optimization of the best treatment program is of great significance.This paper takes the landslide as the research object that located in north Erzhuang Village,Yan'an City,and systematically analyzes the engineering geological conditions,basic characteristics,stability analysis,treatment design and scheme optimization of the landslide.Details are as follows:(1)Through the on-site investigation of landslide,collect relevant data,analyze the engineering geological conditions of the landslide in Erzhuangke North District and the basic characteristics of landslide,and prepare for the analysis and evaluation of landslide stability and design and treatment plan.(2)Through the detailed discussion of morphological characteristics,structural features,deformation and failure characteristics and formation conditions of landslides,the stability of landslides is evaluated from qualitative and quantitative analysis,using natural history analysis method,Bishop method and finite element.Three methods of numerical simulation method,the comprehensive analysis shows that the landslide is currently in an unstable state.Under the influence of other factors such as rainfall,the landslide will be in an unstable state,and relevant treatment measures need to be taken in time for reinforcement and treatment.(3)According to the analysis results of landslide stability evaluation and the specific characteristics of landslides in north Erzhuangke Village,three treatment schemes were designed to scientifically control the landslides,and the feasibility analysis of three treatment schemes was carried out by means of finite element simulation software.Using the fuzzy fuzzy multi-attribute group decision-based theoretical method,comprehensively evaluate each governance plan from the five aspects of safety,engineering quality,cost,duration and environmental coordination,so as to optimize the treatment plan one(pre-The stress anchor cable anti-slide pile + retaining plate + leveling slope and slope cutting + intercepting drainage is the optimal treatment plan for the landslide.