植生を考慮した表層崩壊の特徴と崩壊予測(<小特集>土構造物の維持管理 : 性能規定化に向けて)

概要

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Surface slope failures occur in shallow depth distributing the roots of plants. The stability decreases due to ascending of the groundwater by rain, and the surface collapses abruptly in the patterns, such as exfoliation and slip-ping down. There surface slope failures account 55% or more of total collapse in our country, and depend on the intensity of rain, the topographical features and the vegetation. However, there is little research on how vegetation would affect the stability of slopes. Generally, rain diversion, erosion prevention, tight-bind-ing effect and piling effect of the surface by the root sys-tem, can be considered as a stabilizing effect by the vegetation. Features of the surface slope failure along lateral roots layer of plants are shown in this paper. Also, long term period collapse prediction was presented taking account of the repetitive nature of the collapse.
社団法人地盤工学会の論文
2002-01-01