Study Of The Ground Conditions Influence On The Landslide Movement

This paper is based on results of previous test, with means of test on geotechnical parameters/landslide model and calculation of PFC2D particle flow to analysis the mechanism motion of site conditions, and in-depth analysis the process of high-speed remote landslide-debris in East River, including followed specific studies:1. Established typical landslide database and analyzed main controlling factor of slope movement characteristics, counted probability of two typical site models besides the basis of field surveys; Provides a theoretical foundation for the follow-up study through calculations of indoor coarse-grained soils with direct shear tests results, study on the effect of the content&coarse particle shape on the shear strength index;2. With combination landslide model test mainly for the ramp slope, slippery body size and type of landslide to study the coupling impact of landslide volume, site conditions and slope types on landslide features;3. Through a series of experiment in various types of landslide movement to accumulate the influence of site condition by the PFC2D particles flow program, to make deeply study the effect of the particle friction coefficient (fb), underlying surface friction coefficient (fw), slope gradient (a) and slope type (X) on landslide features;4. Reproduces the high-speed remote landslide-debris flow movement of the East River via PFC2D, meanwhile discussed the affection of underlying surface coefficient&particle adhesion strength on slope movement distance and accumulated body distribution.