The Research Of Stability Analysis And The Evaluation On The LieYi Landslide Of G318 Line

Landslide usually results in the loss that can't estimate;However control engineering design too conservative,also will result in huge loss on the economy.Therefore,slip the slippery body characteristic and the glide characteristics of the different landslides,the right evaluation slips the stability of the landslide,and taking the economic and rezsonable measures,being placed in the extremely important position in engineering constuct process.HaiZhu Highway of the National Freeway 318 line is the national point construction item that the national implement develops the strategy to be invest by the Ministry of Transportation & Communications approval combine whole sum greatly western region,is one of 12 customs clearance items of the Sichuan province,is also an importance within the national defense highway net to constitute the circuit.HaiZhu Highway engineering locates Zang autonomy state of GanZi,route whole long 126 Kilometerses,the whole line is basic to follow the old road reformation.Because this item earthquake,geology and the structure background are extremely complicated,the natural geography condition is bad,openning the exhibition landslide stability analysis and evaluating the research to have the very important significance.This thesis investigates on the spot and the foundation of the data collections up,analyzed the K243 LieYi Landslide to slip the geology background of the area of slope first,pass the research to the geography geography characteristic,material of the slippery body of slope constitutes the characteristic,the characteristic of deformation and failure the next in order,analyze the formation mechanism,then apply FLAC^3Das to it's carry on should the dint field,form become an emulation, etc.evaluated the slippery slope of stability present condition and the development trend;fore both of foundation up,make an analysis and evaluations towards synthesizing the slippery stability of slope after manage finally.In addition,this text combines the slippery slope basic geology general situation and stabilities analysis,turn to design the project to carry on the analytical evaluation towards monitoring the system excellently,then carry on the sorting and analyze towards monitoring the data,tally up monitor result,and combine above the basic geology general situation and stabilities analysis,on these grounds to slippery the stability of the body of landslide rechecks after carry on the work.The research result mainly includes:(1)By analyse of topograghy and geomorphology,body structure,geologic strata rock, surface water and groundwater etc.,the occurrence of the landslide is mainly because of the characteristics of a special topograghy and geomorphology and its body structure,the natural stability of the slope body is bad,openning to dig and rain the function to rain in the toe of the slope,body of the landslide lose steady and output.(2)Transform to analyze the characteristic of deformation and failure and genetic mechanism of the landslide,the formation of the slope experienced mostly three stage:The stage of deadweight pressure consolidation and creep deformation- slip surface gradual formation stage-transform the breakage stage in the near future,and each stage has its deformation characteristics and development characteristics.(3)Aim at Lieyi landslide to transform to turn worse the phenomenon outputly,the whole glide transform,the irregular crack at the middle and trailing edge,and the monitors of sliding distance in front and back edge,the article passes mumerical simulation acquired understanding of two aspects:on the other hand is to pass the property and characteristicses to the existing time sequence transform of draw up to match,the understanding slope transforms, transform the way and scopes,verify to open to dig the side slope to transform to lose the steady mode;The second aspect is at transform to carry on the foundation that compares to like to draw up to match to the existing time sequence up,to under the present condition condition of transform and develop the trend carry on the estimate and analysises.Through numerical analysis of sectionâ…¡-â…¡and sectionâ…¤-â…¤of the landslide,as to it's stability and trend makes an evaluation:the landslide is placed in the unsteady appearance;If don't add to pay to protect,the upper part pile up the body and will produce the glide.(4)Through stability analysis of the landslide after manage:â‘ the engineering reinforce of the slip pile adding the frame anchor cable hae played an important role in controlling the deformation of the slope,suppress the slippery further development effectively.â‘¡Establish annular intercepting drain to cut the water to extend to two sides of natural gully in the boundary of the slope,suppressed the underwater downword infiltration and influx to the the slope body availably,soften slope body,then disadvantageous in the stability of slope.(5)Tidy up the analytical result enunciation through the Lieyi landslide monitor result data:the slip pile adding the frame anchor cable to pay to block to reinforce the engineering etc. the construction complete near an after year,the landslide already basic tend in the stability,the engineering measures have already seen the result.