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Revision of simulation model of pluvial and fluvial inundation and its validation through hydraulic experiments and field observations

Research Project

Project/Area Number 20H02414
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionKyoto University

Principal Investigator

Kawaike Kenji  京都大学, 防災研究所, 教授 (10346934)

Co-Investigator(Kenkyū-buntansha) 山野井 一輝  京都大学, 防災研究所, 助教 (30806708)
武田 誠  中部大学, 工学部, 教授 (50298486)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords自然災害 / 減災 / 水工水理学 / 洪水氾濫 / 内水氾濫
Outline of Research at the Start

今後も発生が懸念される大規模な豪雨災害に対して,高精度なリスク評価のための数値解析モデルを開発する.とくに建物内部への浸水,側溝・小規模水路,氾濫原での土砂堆積の3点に着目し,それらの影響を適切に考慮したモデルを開発するとともに,これまであまり行われてこなかったユニークな水理実験と現地観測によってモデルの裏付けを行う.

Outline of Final Research Achievements

Physical experiments of urban inundation were carried out with building models inside of which is also inundated. The numerical model with fine unstructured meshes precisely expressing the building boundaries reproduced the experimental results reasonably. A numerical model, which considers the effects of lumped buildings with coarser meshes, was newly proposed.
A numerical model for pluvial inundation considering the effects of side ditches was developed and applied to the Ogurisu area, Kyoto. The simulation results agreed well to the measured data of inundation depth at the disaster of 2013.
A numerical model for fluvial inundation and deposition of contained suspended load was developed and applied to the Hoyasu area, Nagano. Comparing the simulation results with the measured data at the disaster of 2019, it is found that the simulation results of inundation depth agreed well to the measured one, but the results of the thickness of deposition required additional model revision.

Academic Significance and Societal Importance of the Research Achievements

現在洪水浸水想定区域図の作成に用いられている解析方法では,建物内部は瞬時に氾濫して外部と同じ水深に達するモデルとなっているが,実験との比較によって,時間差をもった建物内部への浸水,かつ計算効率を考慮した新たなモデルを提案することができた.また,側溝を考慮した内水氾濫解析モデルや,氾濫流に含まれる浮遊砂の堆積モデルも提案することができた.いずれのモデルも,実験結果や現地での実測データを根拠に検証したものであり,その再現精度を保証するものである.
これらの研究成果は,洪水ハザードマップの精度向上や,内水ハザードマップの普及,土砂・洪水氾濫リスク評価の普及に大きく貢献するものと期待される.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (6 results)

  • [Journal Article] ACCURACY EVALUATION OF INUNDATION ANALYSIS OF THE CHIKUMA RIVER CONSIDERING DIKE BREAK CONDITIONS AND INFLUENCE OF BUILDINGS2022

    • Author(s)
      武田 誠,佐藤大介,曽根原真秀,豊田政史,川池健司
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 78 Issue: 2 Pages: I_799-I_804

    • DOI

      10.2208/jscejhe.78.2_I_799

    • ISSN
      2185-467X
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FLUME EXPERIMENTS AND NUMERICAL SIMULATIONS CONSIDERING ACTUAL BUILDING ARRANGEMENT AND FLOODWATER INFILTRATION INTO BUILDINGS2022

    • Author(s)
      川池健司,藤森健人,山野井一輝
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 78 Issue: 2 Pages: I_805-I_810

    • DOI

      10.2208/jscejhe.78.2_I_805

    • ISSN
      2185-467X
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inundation Analysis of the Dike Breach of the Chikuma River Taking Drainage Process and House Damage into Consideration2021

    • Author(s)
      Takeda Makoto, Sato Daisuke, Kawaike Kenji, Toyota Masashi
    • Journal Title

      Journal of Disaster Research

      Volume: 16 Issue: 3 Pages: 343-350

    • DOI

      10.20965/jdr.2021.p0343

    • NAID

      130008020256

    • ISSN
      1881-2473, 1883-8030
    • Year and Date
      2021-04-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental investigation of suspended load deposition on paddy fields during fluvial inundation2021

    • Author(s)
      DING Can, KAWAIKE Kenji, NAKAGAWA Hajime, YAMANOI Kazuki
    • Journal Title

      Journal of Japan Society for Natural Disaster Science

      Volume: 40 Issue: S08 Pages: 111-123

    • DOI

      10.24762/jndsj.40.S08_111

    • NAID

      40022730118

    • ISSN
      0286-6021, 2434-1037
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IMPROVEMENT OF THE PLUVIAL INUNDAITON ANALYSIS MODEL IN KASUGAI CITY AND ITS TRIAL UTILIZATION2021

    • Author(s)
      横倉 昌信, 武田 誠, 村瀬 将隆
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 77 Issue: 2 Pages: I_529-I_534

    • DOI

      10.2208/jscejhe.77.2_I_529

    • NAID

      130008160157

    • ISSN
      2185-467X
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 建物内部への浸水を考慮した氾濫実験と基礎的な数値解析モデル検証への適用2020

    • Author(s)
      藤森健人・川池健司・山野井一輝・中川一
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 76(2)

    • NAID

      130008122677

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 排水過程および建物被害を考慮した千曲川破堤氾濫の数値解析2020

    • Author(s)
      佐藤大介・武田誠・川池健司・豊田政史
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 76(2)

    • NAID

      130008122705

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of the influence of paddy ridges on the suspended load deposition during inundation2020

    • Author(s)
      Can Ding, Kenji Kawaike, Hajime Nakagawa, Kazuki Yamanoi, Rocky Talchabhadel
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 76(2)

    • NAID

      130008122689

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 氾濫流による土砂堆積に着目した千曲川決壊氾濫の現地調査と数値解析2020

    • Author(s)
      川池健司・武田誠・豊田政史・余川弘至・山野井一輝・中川一
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 76(2)

    • NAID

      130008122694

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 建物を考慮した内水氾濫解析モデルの改良に関わる検討2023

    • Author(s)
      横倉昌信,武田 誠,須賀俊介
    • Organizer
      令和4年度土木学会中部支部研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 春日井市における内水氾濫解析モデルの活用に関する研究2022

    • Author(s)
      横倉昌信,武田 誠,大橋直人
    • Organizer
      令和3年度土木学会中部支部研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 氾濫台模型実験と数値解析を用いた建物への浸水が氾濫過程に及ぼす影響の評価2022

    • Author(s)
      藤森健人・川池健司・山野井一輝・中川一
    • Organizer
      京都大学防災研究所研究発表講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 建物を考慮した千曲川破堤による浸水に関する数値解析的検討2021

    • Author(s)
      佐藤大介,武田 誠,川池健司,豊田政史
    • Organizer
      土木学会第75回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 令和元年台風第19号に伴う千曲川破堤氾濫の排水過程を考慮した数値解析2021

    • Author(s)
      佐藤大介,武田 誠,川池健司,豊田政史
    • Organizer
      令和2年度土木学会中部支部研究発表
    • Related Report
      2020 Annual Research Report
  • [Presentation] 千曲川破堤に伴う浸水および排水過程の再現計算2020

    • Author(s)
      佐藤大介,村山美月,武田 誠,川池健司,豊田政史
    • Organizer
      土木学会第75回年次学術講演会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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