Control Of The Permeability Of Gravelly Slide Body On The Landslide Stability In The Reservoir Environment

Since the Three Gorges Reservoir water storage,the deformation of landslidesin reservoir area have been actived.In the reservoir environment,the stability of the landslide is closely related to the permeability of the slope material.Therefore,to clarify the control effect of slip body's permeability on the stability of landslide is not only important to study the mechanism of landslide formation in the Three Gorges reservoir area,also to evaluate and prevent reservoir landslide.In the study,a lot of soil samples collected from various landslides in the Three Gorges Reservoir area was sowed firstly.According to the combination of density and particle gradation,several groups of soil and stone mixtures were prepared for the indoor head penetration test.Based on these tests,the influence of these two factors on the permeability of the soil and rock mixture was obtained and analyzed.According to the test results,taking the Wangjialiang landslide as the research object,it was analyzed the variation of seepage field in landslide area under reservoir water level rise and fall with different scales of penetration.Meanwhile,the stability of landslide is calculated quantitatively.