Analysis of landslide and mudflow scenarios in loess and clay soils that caused tragic incidents in Uzbekistan

Abstract. The article describes real landslides occurred in Uzbekistan, divided into two groups. The first group is about landslides that caused accidents, where the separation zone, the form of movement, blockages and the nature of the destruction of residential buildings are considered. These are landslides of a one-time separation, rectilinearly directed and covering residential buildings; liquefaction landslides that demolish or overwhelm buildings located in the lower part of the slope; mud streams moving along the channel of the brook, transferring to the opposite side and flooding the buildings located in the floodplain of the brook. The second group is about landslides that block the riverbeds and form blockages of transverse and longitudinal shape. Scenarios for the formation and erosion of blockages, the height of blockages in loess and clayey rocks, the parameters of dammed lakes, and the places of debris erosion are considered.

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