骆银辉, 李建华, 胡斌. 2008: 滇东北地区的软岩流变与边坡变形破坏. 工程地质学报, 16(S1): 226-229.
    引用本文: 骆银辉, 李建华, 胡斌. 2008: 滇东北地区的软岩流变与边坡变形破坏. 工程地质学报, 16(S1): 226-229.
    LUO Yinhui, LI Jianhua, HU Bin. 2008: FLOWING DEFORMATION OF SOFTROCK & DEFORMATION AND WRECK OF SLOPE. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 226-229.
    Citation: LUO Yinhui, LI Jianhua, HU Bin. 2008: FLOWING DEFORMATION OF SOFTROCK & DEFORMATION AND WRECK OF SLOPE. JOURNAL OF ENGINEERING GEOLOGY, 16(S1): 226-229.

    滇东北地区的软岩流变与边坡变形破坏

    FLOWING DEFORMATION OF SOFTROCK & DEFORMATION AND WRECK OF SLOPE

    • 摘要: 软岩经常与强度较高的坚硬岩层呈互层状或作为坚硬岩层的夹层在自然界出现。自然斜坡和工程边坡中的软岩,在大于其软化临界荷载的应力作用下产生的流变作用会直接影响边坡斜坡的稳定性。滇东北地区的岩石类型主要为中生界白垩系和侏罗系的砂泥岩,以及古生界的含泥灰岩夹层的碳酸岩,岩层以水平或近水平的缓倾角产出,由于地壳的抬升,河流的切割(如金沙江河谷、关河河谷等),河谷地区容易形成高陡岩质边坡和大型岩块堆积边坡。边坡的变形破坏主要是由于软岩夹层在高应力作用下流变产生的变形破坏,边坡变形破坏遵循特定岩体结构的软岩流变破坏规律,形成由下往上和由外及里的变形破坏,从而形成大型岩块堆积。

       

      Abstract: 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.

       

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