中国・寧夏南部の黄土地すべりの特徴とすべり面の位置による分類

概要

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Principal types and influencing factors of loess landslides were examined. Three types of loess landslides were identified according to the position of slip surface: the slip surface of the first type was in the loess bed; second one was near the boundary of the loess beds and the bed rock body; and third one was in the bed rock. The following major features of loess landslide were pointed out, the well-developed joints and druses in the loess beds function as the groundwater passages, the secondary loess beds laying on the Tertiary beds is changed to the moving mass, and the gravitational creep contributes to forming the arced slide topography. Most loess landslides have ever been considered as the primary slide, but the reactivated slide topography was observed across the bank of the Miaowan landslide in this case study.
日本自然災害学会の論文
2004-05-30