Study On Slope Stability Analysis And Reinforcement Measures Of Filling Roadbed

China is a country with frequent disasters,most of which are related to slope,such as landslides,landslides,falling rocks and mudslides,all of which are major natural disasters that directly endanger people’s lives and property.Therefore,the study on the disaster instability mechanism and stability of slope engineering has always been the focus of domestic and international research.Due to the diversity of geological conditions and hydrologic conditions,slope engineering is in a complex disaster environment,so the problem of slope instability and failure is a systemic problem that integrates complexity,high degree of uncertainty and dynamic change characteristics.It covers a wide range and covers a lot of content.This paper focuses on several special problems such as complex Geological conditions and rainfall disaster factors on the high slope on the West side of S11 block of Banan District Economic Park in C hongqing.By means of qualitative analysis,quantitative analysis and numerical simulation,the failure mechanism and stability characteristics of typical slope structures under different disaster factors are studied,and the general laws of slope catastrophe are revealed.The stability of the high slope landslide is analyzed and evaluated and practical measures are put forward.The main research results of this paper are:(1)Through the field survey of the project site,the geological characteristics and environmental conditions of the slope area are analyzed and studied,and the physical and mechanical parameters of the geotechnical soil are obtained through the on-site sampling.It provides the necessary and accurate calculation parameters for the correct analysis of the stability of the roadbed landslide and the reasonable choice of the remediation scheme.(2)By studying the basic morphological characteristics and stress-strain characteristics of the roadbed slide body of the high-fill Square,qualitative analysis of the basic causes of the landslide,preliminary evaluation of the landslide failure mechanism and landslide stability;The stress and strain characteristics of the landslide under natural conditions and rainfall factors were quantitatively analyzed by using the limit equilibrium method.(3)Systematically from the theory of unsaturated soil mechanics,saturation-unsaturated seepage theory and strength theory,rainfall infiltration,Based on the investigation and summary of typical rainfall induced landslides in C hina,the mechanism and stability characteristics of slope failure and failure caused by rainfall are studied in detail.The damage evaluation method of slope safety under the coupling of seepage and stress is realized by mathematical modeling.The effects of rainfall type,rainfall intensity and holding time on slope instability mechanism and stability are investigated.The most dangerous sliding surface and the minimum safety factor were calculated,and the stability was analyzed and evaluated.(4)The analysis results and numerical simulation results of the limit balance method are collated and studied,and the principles of landslide management are followed.The roots are combined with the landslide failure model of the high slope on the West side of the S11 block and the characteristics of the line.The landslide control scheme adopts "anti-sliding pile + grid planting grass protection slope + cut drainage project".