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Improvement of riverbed and vegetation dynamics prediction model for strategic river management and its application to the field

Research Project

Project/Area Number 16K06511
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Hydraulic engineering
Research InstitutionOkayama University

Principal Investigator

Maeno Shiro  岡山大学, 環境生命科学研究科, 教授 (20157150)

Co-Investigator(Kenkyū-buntansha) 吉田 圭介  岡山大学, 環境生命科学研究科, 准教授 (50436721)
Research Collaborator Akoh Ryosuke  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords河床変動 / 植生動態 / 河岸侵食 / 動的メッシュ / 河道管理 / 河岸新緑 / 側岸浸食 / 河床動態
Outline of Final Research Achievements

In this study, improvement of riverbed dynamics and vegetation dynamics prediction model for strategic river management and basic experiments for on-site application and construction of simulation model were carried out.
Simulations of floods were carried out using the riverbed topography of airbone laser bathymetry (ALB), which can measure under water bed surface using a green laser. Simulation results show in excelent agreement with the observed water level.
In addition, in order to improve the accuracy of the flow out of vegetation near the edge of sand bar, we clarified the relationship between the condition of lodging of riparian trees at the eroded bank and the shear stress of the river bed obtained by the numerical analysis.

Academic Significance and Societal Importance of the Research Achievements

本研究により,ALB測量を用いることで,近年河道管理上問題となっている植生の影響を面的に定量的に捉えることが可能となることを示した.また,側岸浸食箇所に対して自動的にサブメッシュを作成して側岸浸食部の移動を精度良く再現するモデルのためにメッシュの自動分割プログラムを作成しており,今後のシミュレーション精度の向上とシミュレーション時間を節約出来るものであり,本研究の成果は現地の河道管理技術の向上に大いに貢献するものである.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (13 results)

All 2018 2017 2016 Other

All Journal Article (11 results) (of which Peer Reviewed: 10 results,  Acknowledgement Compliant: 1 results) Remarks (2 results)

  • [Journal Article] ALBによる河道地形の再現性向上に伴う河床変動解析の改善効果の検討2018

    • Author(s)
      山口華穂,吉田圭介,前野詩朗,間野耕司,赤穗良輔,西山哲
    • Journal Title

      土木学会論文集A2(応用力学)

      Volume: 74 Pages: 465-474

    • NAID

      130007583705

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ALB計測データを用いた流況解析に基づく旭川下流部におけるアユの産卵場の物理環境評価2018

    • Author(s)
      吉田圭介,前野詩朗,髙橋幸生,児子真也,小川修平,赤穗良輔
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 74 Pages: 421-426

    • NAID

      130007757782

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimating flow resistance by vegetation in rivers using high-resolution airborne laser bathymetry2018

    • Author(s)
      K. Yoshida, S. Maeno, K. Mano, S. Ogawa, and R. Akoh
    • Journal Title

      Proc. 12th Int. Symp. on Ecohydraulics

      Volume: 12

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Remote sensing of morphodynamics and habitats in rivers using airborne LiDAR bathymetry2018

    • Author(s)
      K. Yoshida, S. Maeno, S. Nigo, K. Mano, S. Takahashi, and R. Akoh
    • Journal Title

      Proc. 12th Int. Symp. on Ecohydraulics

      Volume: 12

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ALB点群を用いた樹木群の密生度算定法の検討2018

    • Author(s)
      吉田圭介,前野詩朗,小川修平,井関禎之,赤穗良輔
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: Vol.74, No.4

    • NAID

      130007628293

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] DETERMINATION METHOD FOR VEGETATION SPECIES DISTRIBUTION IN RIVERS USING AIRBORNE LASER BATHYMETRY2017

    • Author(s)
      吉田圭介,前野詩朗, 間野耕司, 岩城智大, 小川修平, 赤穗良輔
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 73 Issue: 2 Pages: I_607-I_618

    • DOI

      10.2208/jscejam.73.I_607

    • NAID

      130006329895

    • ISSN
      2185-4661
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Application of high-resolution ALB data of shallow water to river flow analysis2017

    • Author(s)
      K. Yoshida, S. Maeno, K. Mano, K. Yamaguchi, and R. Akoh
    • Journal Title

      Proc. 3rd Int. Symp. on Shallow Flows

      Volume: 1

    • Related Report
      2017 Research-status Report
  • [Journal Article] 適正な分流量を維持するための百間川分流部の固定堰周辺における植生管理方策の検討2017

    • Author(s)
      平井康隆・前野詩朗・吉田圭介・岩城智大・小川修平・赤穗良輔
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 73

    • NAID

      130006406142

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] ALBを用いた河道地形計測の精度検証と流況解析の改善効果の検討2017

    • Author(s)
      吉田圭介,前野詩朗,間野耕司,山口華穂,赤穗良輔
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 73

    • NAID

      130006406283

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sequential data assimilation for estimating bed roughness of vegetated flooded rivers2016

    • Author(s)
      K. Yoshida, S. Maeno
    • Journal Title

      Proc. 20th IAHR-APD Congress

      Volume: CD-ROM

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Forestation control works: secular change at the Gion area in the Asahi River2016

    • Author(s)
      K. Yoshida, S. Maeno, K. Yamaguchi, T. Iwaki, S. Fujita, Y. Hirai
    • Journal Title

      Proc. 20th IAHR-APD Congress

      Volume: CD-ROM

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Remarks] 岡山大学水工学研究室

    • URL

      http://www.okayama-u.ac.jp/user/civil/Labs/hydrau/home2/maeno_yoshida.html

    • Related Report
      2017 Research-status Report
  • [Remarks] 岡山大学水工デザイン学研究室

    • URL

      http://www.okayama-u.ac.jp/user/civil/Labs/hydrau/home2/maeno_yoshida.html

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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