Stability Analysis And Treatment Scheme Optimization Of Shuanglong Landslide In Huangling Country,Shaanxi

There are abundant energy resources but limited land resources in the Loess Plateau of Northern Shaanxi.There will be a lot of excavation and slope cutting in the development of energy and urban construction,which will change topographic features;In addition,the rainfall is large and concentrated,which is likely to lead to the decline of slope stability and the occurrence of landslide,resulting in huge losses to lives and properties.How to correctly analyze and evaluate the stability of landslide,effectively reduce the occurrence of landslide disaster,has far-reaching significance for scientific management of landslide.Based on the loess landslide of Shuanglong,Huangling county,Shaanxi,this paper summarizes its cause of landslide,stability calculation and treatment scheme optimization.The main content are as follows:(1)This paper made a brief introduction about the geological survey,basic characteristics and rational analysis of the landslide,through studying the geological conditions and site investigation.(2)Stability of the landslide is analyzed by using qualitative analyzes according to investigation report and the current deformation feature of the landslide.The result is that the stability of Shuanglong landslide is poor,and the landslide is easy to lose stability under the influence of rainfall and other adverse factors.Considering the most unfavorable conditions,we use the transfer coefficient method to calculate the stability of the landslide,considering the most unfavorable principle and choose the smaller value of the stability coefficient,and the result is that the landslide is in an unstable state under natural condition and in an unstable state under saturated condition.(3)Midas/GTS,which is a kind of finite element numerical simulation software,is used to calculate the stability,the results are in good agreement with the above two methods.(4)According to the deformation characteristics,strata and actual topography,it will design three different kinds of schemes.Using finite element numerical simulation software,we calculate the feasibility of project 2 and 3.And two fuzzy mathematics theories are used to optimize the three schemes.The result is that the project 2 ultimately is the best.The main measures are counterweight retaining wall + counter pressure weight increase+ water interception engineering.