MECHANISM OF SEISMOGENIC LIQUEFACTION LANDSLIDES
Keywords:
seismogenic landslide, landslide-flow, soil liquefaction, loess-like loam, Hindu Kush earthquakes, pore pressure, stability coefficientAbstract
This article examines the genesis and development dynamics of large-scale seismogenic liquefaction landslides using the catastrophic Sary-Bulak landslide near the town of Kok-Jangak as an example. The author analyzes in detail the triggering effects of long-duration low-frequency vibrations from deep-focus Hindu Kush earthquakes on metastable loess-like loams under conditions of high groundwater pressure. Based on geotechnical testing and computational modeling using the SLIDE 4.0 software, the physical and mechanical mechanism behind the sharp increase in pore pressure and the drop in effective stresses, which led to the transition of the soil mass to a fluid state and its extremely long-distance movement, is revealed.
References
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