Analysis And Control Measures Of Landslide In A Highway Sub-grade Slope In Changshou District Of Chongqing

In this paper,taking the Landslide in K11~K12 roadbed in BAODING Road as a background,anglicize the high embankment slope stability evaluation and propose a practical measure by means of qualitative analysis and quantitative analysisThis article focuses on the following research:1.Through the worksite investigation,analysis of geological characteristics and environmental conditions of the landslide area and obtain the physical and mechanical parameters of soil samples by soil tests,providing the precise and necessary parameters for the high fill embankment stability analysis.2.By studying the High Embankment landslide basic characteristics and stress-strain characteristics,analyze its landslide basic reasons,the failure mechanism and preliminary evaluation of landslide landslide stability.3.Using the Quantitative analysis method,analyze the stress-strain characteristics of the landslide under natural conditions and 20-year return period rainfall conditions;Calculating the most dangerous sliding surface and the minimum safety factor and analyzing the stability.4.Using the Morgenstern-Price method and the geotechnical engineer analysis software named SLOPE / W to establish the numerical model and numerical model;a the stress-strain characteristics of the landslide under natural conditions and 20-year return period rainfall conditions;Calculating the most dangerous sliding surface and the minimum safety factor and analyzing the stability.5.Compare the result of limit equilibrium analysis and numerical analysis,and according to the conditions and the stability of landslide where the status quo works,The limit equilibrium method analysis results and the results of numerical simulation to study,according to status quo of landslide in the engineering conditions and stability,follow the principle of landslide treatment,according to the landslide failure mode and the characteristics of K11-K12 section lines,landslide treatment scheme "lattice +planting grass slope protection pile+ drain engineering".'profile for controlling section,1-1 of anti-slide pile retaining engineering in road side close to the arrangement,2-2',3-3'profilesection are controlling section,combining road linetype of anti-slide pile retaining engineering layout.To the side and rear of the unstable rock mass should be removed,after artificial remove slope,pouring reinforced concrete lattice beam,planting grass slope protection;Reasonable position set on the outside of landslide boundary intercepting ditch,the landslide on the tensile fracture,should be used to cover or concrete infill measures,to prevent surface water by tension cracks into the body.Slope toe cut drains shall be setting settlement joint,fill inside seam asphalt hoof fat oil,trench wall jointing with cement mortar.Bottom drain combined with road drains.6.After renovation of the slope stability safety factor meet the requirements,therefore,the slope engineering management measures can effectively cope with instability of highway landslide deformation or hazard.