2004•Journal of Glaciology and GeocryologyRequires access

Stability Analysis Methods for Evaluating Landslide of Thaw-slumping in Permafrost Regions

Niu Fu-jun, Jin De-wu, Ma Wei, Zhi Wen

Abstract

Landslide of thaw-slumping in permafrostregions of the Qinghai-Tibet Plateauis studied in this paper. Thaw-slumping belongs to shallow landslidewith small depth-length ratio. Therefore the infiniteslope analysis method is available to be applied in the stability analysis. Considering identical seepage directions to slope surface,we deduced analytical expressions of safety factoraccordingto the effective stress principle and plotted stability analysis chartof slopes with dry or fully saturated soils. Taking an example of landslide of thaw-slumping at the mileageof K3035 of the Qinghai-Tibet Highway,we evaluated the analytical expressions.

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Key concepts: Slumping, Landslide, Permafrost, Geology, Geotechnical engineering, Slope stability, Stability (learning theory), Geomorphology