FLOWING DEFORMATION OF SOFTROCK ＆ DEFORMATION AND WRECK OF SLOPE

Softrock exists regularly with solidrock by mutual stratum or act as intercalary strata of solidrock in nature. Softrock produce flowing deformation when it is affected by stress which greater than the soften critical load, which will directly affect stabilization of slope. The types of rock in the northeast part of yunnan mainly are sand shale in the Mesozoic group Cretaceous and Jurassic also including the carbonate rocks with marl in Paleozoic. The rocks often occur in the formation of horizontal direction orhorizontal low-angled. Because of crust raising and stream cutting it is easy to form the steep rocky-slope or large rock packing slope (e.g. jinsha valley and guan valley). The damage of the slope mainly results from the rheology of soft rock interlayer under the action of high stress. Slope deformation obeys the laws of soft rock deformation of special structure rock mass, which form deformation from bottom to top, from out to within of the slop, and form large rock accumulate.