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Method for determination of the hazardous area due to sefiment runoff

Research Project

Project/Area Number 61850097
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionKyoto University

Principal Investigator

TAKAHASHI Tamotsu  Professor of the Disaster Prevention Reaerch Institute, Kyoto University, 防災研究所, 教授 (40027230)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Hajime  Instructor of the Disaster Prevention Research Institute, 防災研究所, 助手 (80144393)
EGASHIRA Shinji  Associate professor of the Diaster Prevention Research Institute, 防災研究所, 助教授 (00027286)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 1987: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1986: ¥3,400,000 (Direct Cost: ¥3,400,000)
KeywordsSediment hazard / Landslide / Debris flow / Prediction of hazardus area / 数値シミュレーション
Research Abstract

This study aims to present the methods to predict the hazardous area due to sediment runoff, which will be used to determine the areas to be evacuated or prohibitted to live.
In respect to the prediction of the quantity of sediment runoff, a seepage flow simulation method which is usable to predict the time and place of occurrence of landslides is preseeted. Scale and form of a natural dam produced by the inflow of slided sediment into the stream channel and the hydrohraph of a debris flow which is generated by collapse of the natural dam are discussed. These discussions together with so far presented debris flow hydrograph prediction method will be made good use in determining the quantity and quality of sediment runoff in the hazardous zone delineating processes.
Numerical simulation methods to predict the flooding and deposition of debris flow and mud flow are given. The applicability of these methods are proves by analysing the actual Horadani debris flow and Mt. Nevade del Ruiz huge mud flow as well as the laboratory experiments. As the hazard due to the erosion of the debris cone thus produced and redeposition downstream is another important problem to be taken into account in the hazard risk assessment, a numerical simulation model is developed. A method which can predict the particle size distribution on the surface as well as inside of debris fan is also presented.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 高橋 保,中川 一,山路昭彦: 京都大学防災研究所年報. 30 B-2. 611-626 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 高橋 保: 水工学シリーズ. 87-A. 8-1-8-23 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 高橋保,中川一,佐藤広章: 土木学会 水理講演会 論文集. 32. 497-502 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 高橋 保,中川 一: 京都大学防災研究所年報. 31 B-2. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takahashi Tamotsu, Nakagawa Hajime and Yamaji Akihiko: "Method for determination of the hazardous area due to a devris flow" Annuals, Disaster Prevention Research Institute, Kyoto University. 30 B-2. 611-626 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takahashi Tamotsu: "Prediction of sediment runoff and hazard due to it" Water Engineering Serice. 87-A. 8-1 8-23 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takahashi Tamotsu, Nakagawa Hajime and Sato Hiroaki: "Fan fromation due to the runoff of the debris and immature debris flow" Proceedings of the Japanese Conference on Hydraulics. 32nd. 497-502 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Takahashi Tamotsu and Nakagawa Hajime: "Sediment hazard risk assessment on a fan area" Annuals, Disaster Precention Research Institute, Kyoto University. 31 B-2. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 高橋保,中川一: 京都大学防災研究所年報. 30号B2. (1987)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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