VERIFICATION OF SNOW ACCUMULATION EFFECT ON EMBANKMENT STABILITY

DOI Web Site 4 References
  • TAKAYANAGI Tsuyoshi
    鉄道総合技術研究所 防災技術研究部 地盤防災
  • MANOME Ryo
    鉄道総合技術研究所 防災技術研究部 地盤防災
  • FUJIWARA Shoma
    鉄道総合技術研究所 防災技術研究部 地盤防災
  • SATO Ryota
    鉄道総合技術研究所 防災技術研究部 気象防災
  • NAITO Naoto
    豊橋技術科学大学 建築・都市システム学系

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Other Title
  • 積雪が盛土安定性に及ぼす影響に関する検証

Abstract

<p> Landslide can occur on slopes in snow covered areas because of snowmelt water and rainfall during the snowmelt season. In this study, the effect of snow accumulation on slope stability was examined for the purpose of more accurately evaluating the risk of such snowmelt disasters. In this study, hydraulic properties and strength characteristics of snow were determined through laboratory tests. In addition, precipitation experiments were conducted on a snow-covered embankment model to observe the moisture response and deformation of the embankment. And Finite Element Method of saturated and unsaturated seepage flow and slope stability analysis were also conducted on the snow-covered embankment model. As a result, it was confirmed that the snow accumulation has the effect of slightly inhibiting the infiltration of water into the embankment and slightly improving the slope stability by restraining the surface layer of embankment slope with high water content.</p>

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