| The landslide is on Yunnan Province Lan Ping county Lancang River bank, lit's altitude between 1410～1870m, trailing edge leading edge length about 1000m , long to width 1062m controlling , belonging to representative running quickly with great ease and so on style of Shun He. Landslide body volume is enormous , the open country discovers find some tension cranny on the body part section, therefore the landslide stability is very important for the village safety and the damsite designing a power station.Engineering geology condition the main body of a book has been studied have expounded the landslide area geology environment, and detailed going steadily downhill. Judging combining with geology finally, monitor result , numerical value simulation and limit balance calculation bear fruit , reach main research result of the following:(1) Tracking by destroying indication to landslide deformation is surveyed, indication carries out thorough research analysis on rock soil body structure and destroying already happening going steadily downhill , destroys a pattern combining with having ascertained possible deformation of landslide to the monitoring data comprehensive analysis.(2)The numerical value having carried out FLAC3D on landslide entirety has imitated , has analysed the deformation law going steadily downhill preparing earthquake under natural conditions affecting the landslide body down , has reached the landslide the slope body which can not produce big range losing destroying steady, but being minor range of part only.(3) The numerical value having carried out FLAC2D on landslide body three models section has imitated , has analysed the stability going steadily downhill under natural conditions and being gone steadily downhill when criterion expects earthquake in 50 and earthquake for 100 years after storing water,reaching in storing water and having gone steadily downhill under earthquake force effect part range may produce less displacement , being able to not produce big range landslide , Hua Po Po on the entirety is stable.(4) Apply Morgenster-price law , facilitate Bishop law and facilitate Janbu follow three kinds limits balance analysis law having been in progress secretly scheming against to representative three section, the overall stability is good under reaching the landslide body centre part in the earthquake and storing water affecting , two flanks is slightly bad, effect is bigger by the earthquake with storing water; Glide appear on landslide part under the earthquake sum stores water condition.(5)The stability carrying out much factor sensitivity analysis on Morgenster-price landslide stability calculation law calculation parameter , analysing result thinking that loose landslide body supercrust soil layer gluing gathers a force to landslide affects a maximum; The angle abrading within going steadily downhill experiencing and observing lower part bedrock gluing gathering the force sum is very young to landslide stability effect.
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