The issue and resolution method of the risk evaluation of landslide in the Shimajiri-mudstone

  • GIBO Seiichi
    Faculty of Agriculture, University of the Ryukyus
  • SASAKI Keizo
    Sasaki Consulting Engineer Office
  • NAKAMURA Shinya
    Faculty of Agriculture, University of the Ryukyus
  • GIMA Asanori
    Seashore Disaster Prevention Division, Department of Civil Engineering and Construction, Okinawa Prefecture

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Other Title
  • 島尻層群泥岩地すべりの危険度評価の課題と解決法
  • シマジリ ソウグン デイガン ジスベリ ノ キケンド ヒョウカ ノ カダイ ト カイケツホウ

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The issue and its resolution method of the risk evaluation of landslides in the area of Shimajiri-mudstone, Okinawa is considered. The hazard ranking system of landslides which is examined through the existing“Primary investigation manual for landslides”brings out the possibility of miss in picking up the first activated mudstone slides. The impact on landslides which can be caused by the exogenous factors of landslide and human-induced land alteration varies depending on the types of landslide. Therefore, we created the schematic illustration for risk evaluation processes of landslide. Lastly, we pointed out an importance of establishment of the risk evaluation method in which characteristics of regional landslides are reflected.

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