Study On Landslide Control Project On The East Side Of Muli County Animal Husbandry Bureau

Under the action of rainfall,the slope of mountainous area is prone to landslide because of the increase of rock-soil weight and the decrease of shear strength parameters.Among them,part of the slope deformation development speed is fast,showing the characteristics of rapid deformation,to people's lives and property brings great threat;At the same time,higher requirements are put forward for project management.Emergency treatment measures should be taken to curb the further development of slope deformation and failure before comprehensive treatment.Liangshan prefecture MuLi County bureau of animal husbandry of rapid deformation of the landslide is a typical landslide,this paper taking the landslide as an example,the investigation of landslide landform,stratum lithology,material structure and composition,,slide,slide bed,slide body deformation and failure characteristics and harm object,on the basis of analysis of the cause of the rapid deformation of landslide mechanism and failure mode,and using the rule of thirds to stability and landslide thrust calculation.The calculation shows that the landslide is in a state of instability.On the basis of technology and economic rationality,two kinds of landslide control schemes are put forward.Through the above analysis and research,the main conclusions are as follows:(1)The landslide of Muli County Animal Husbandry Bureau in Liangshan Prefecture is horseshoe-shaped in plane shape and folded in profile.The slope is about 180 m long and 150 m wide.The average thickness of soil layer is about 20 m.The total amount of landslide is about 54104 m 3.At present,the deformation of landslide is relatively strong,and it is a stage of accelerated sliding.(2)Through calculation,the landslide is in an unstable state,and its deformation is intense,and has a tendency to further develop and expand the scope.Under the influence of persistent rainfall or heavy rainfall,the landslide deformation will be further intensified,even large-scale sliding will occur.Once the landslide slides on a large scale,it will drag the slope behind the landslide to produce sliding deformation.Reasonable engineering control measures should be adopted in time for the landslide.(3)According to the landslide shape,scale,deformation characteristics,development trend,combined with the landform,topographic conditions,stratigraphic lithology and distribution law in the site,the harnessing project for the eastern landslide of the animal husbandry bureau is "landslide trailing edge forever,in combination with the first-class H-type anti-slide pile retaining+ local retaining wall in the interior of the trailing edge highway slope greening + the second-class anti-slide of the leading edge".Pile support + slope surface drainage.