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Study on river engineering oriented to cotroll of river formation and vegetation

Research Project

Project/Area Number 05302040
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 水工水理学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

NAKAGAWA Hiroji  Kyoto University, Div.of Global Environ, Professor, 工学部, 教授 (60027216)

Co-Investigator(Kenkyū-buntansha) TSUJIMOTO Tetsuo  Kanagawa University, Dept.of Civil Engrg.Associate Professor, 工学部, 助教授 (20115885)
KITAMURA Tadanori  Kyoto University, Div.of Global Environ Research Associate, 工学部, 助手 (00243064)
GOTOH Hitoshi  Kyoto University, Dept.of Global Engrg.Research Associate, 工学部, 助手 (40243068)
MURAKAMI Shogo  Kyto University, Div.of Global Environ.Research Associate, 工学部, 助手 (70166247)
NEZU Iehisa  Kyto University, Div.of Global Environ.Associate Professor, 工学部, 助教授 (30109029)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1993: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsvegetation / low frequency fluctuation / rive configuration / Horami / 河道内植生 / 高水敷上植生 / 柔軟植生 / 掃流砂 / 浮遊砂 / 堆積過程
Research Abstract

In fluvial stream with vegetation zone along side wall, low frequency fluctuation of transvers velocity brings alternate lateral bed load transport. Since the bed shear stress near vegetation zone changes rapidly in the transverse direction, net lateral bed load remain after the average of one period of fluctuation. It causes longitudinal sand ridge formation ; furdermore it accompanies a longitudinal sorting in case of graded meterials. We conducted the flume experiment to demoustrate the above phenomena, and explained it by using the model of non-equilibrium bed-load transport.
Next, based upon the such a basic model, we tried to explain the more complicated situation. During floods, the flow is forced to penetrate into vegetation zone but the high resistance discharges the flow in vegetation zone toward the main channel. In such a condition, the sediment transport process is also degenerated. We conducted the experiment of the flow and the bed load transport in the transition reach of flow with vegetation zone. And then we applied the sediment transport model, and clarified the tempral and spatial variation of the channel bed.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] 辻本哲郎: "植生帯周辺での分級縦筋の形成" 水工学論文集. 38. 665-670 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 中川博次: "乱れの時系列特性を考慮した浮遊過程の確立論的解析" 水工学論文集. 38. 591-596 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shogo Murakami: "Gcneralized Formulation of Sediment Pick-up Rate" Proceedings of 9th Congress of APD-IAHR. Vol.2. 290-297 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 後藤仁志: "掃流粒子群の流動過程に関する数値シミュレーション" 土木学会論文集. No.485. 75-83 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 辻本哲郎: "底面粗度の変化に対する開水路流れの応答特性" 土木学会論文集. No.497. 61-70 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 禰津家久: "自由水面領域の非定常乱流特性に関する研究" 土木学会論文集. No.459. 121-130 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tsujimoto, T: "Unstable Pheromena Appearing at Flow with Vegatation" Proc.Int.Conf.on Hydro-Science and Engrg, Washington. 1390-1397 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Nakagawa, H.: "Numerical Simulation of Bed-Load Layrs at Two-Phase Flow" Proc.Int.Coaf.on Hydro Science and Engrg, Washington. 638-645 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Murakami, S.: "Effect of Suspended Sediment on Formation of Bed Profile and Flood Plain of Open-Chanel with Vegetation Zone" Proc.1st Int.Cong.Habtat Hydraulics. 343-356 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Murakami, S.: "Generalized Formulation of Sediment Pick-up Rate" Proc.9th.Conf.of APD-IAHR. Vol.2. 290-297 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tominaga, A.: "Hydraulic Characteristics of Flow in Compound Channels with Rough Flood Plain" Proc.of XXV Cougr.of IAHR. Vol.I. 89-96 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Nezo, I.: "Effects of Unsteadiness on Velocity Profile Rough Beds in Flood Surface Flow" Proc.of XXV Cougr.of IAHR. Vol.I. 153-160 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Suzuki, K.: "Discharge of Gravel on Bed with Sand Gravel Mixture" Proc.of 9th Cougr.of APD-IAHR. Vol.2. 477-484 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] NEZU,I.: "Simulation of Hydrodynamic Behaviors in Vegetated Rivers by Using Turbulence Models" Proc.of 9th Cougr.of APD-IAHR. Vol.2. 313-319 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tsujimot.T.: "Flow over Flexible Vegetation and Formation of Honami Motion" Proc.of 9th Congr.of APD-IAHR. Vol.2. 501-508 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Gotoh, H: "Numerical Model of Interphase Momentum Transfer and Interpaticle Collision in Bed-Load Layr" Proc.of 9th Congr.of APD-IAHR. Vol.2. 565-572 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 辻本哲郎: "植生帯周辺での分級縦筋の形成" 水工学論文集. 38. 665-670 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 中川博次: "乱れの時系列特性を考慮した浮遊過程の確率論的解析" 水工学論文集. 38. 591-596 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Shogo MURAKAMI: "Generalized Formulation of Sodiment Pick-up Rate" Proceedings of 9th Cong of APD-IAHR. Vol.2. 290-297 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 後藤仁志: "掃流粒子群の流動過程に関する数値シミュレーション" 土木学会論文集. NO 485. 75-83 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 辻本哲郎: "底面粗度の変化に対する開水路流れの応答特性" 土木学会論文集. NO.497. 61-70 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 禰津家久: "自由水面領域の非定常乱流特性に関する研究" 土木学会論文集. NO.509. 121-130 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Yoshihiko SHIMIZU: "Comparison of flood-flow structure between compound channel and channel with vegetation zone" Proceedings of XXV Congress of International Association for Hydraulic Research. Vol.1. 97-104 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Tetsuro TSUJIMOTO: "Lateral Transport of Bed-load near vegetation zone and river-morphological change during flood" Proceedings of XXV Congress of International Association for Hydraulic Research. Vol.2. 485-492 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Shogo MURAKAMI: "Bed-load transport and bed deformation around entrance of open channel reach with vegetation zone" Proceedings of XXV Congress of International Association for Hydraulic Research. Vol.2. 616-623 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Iehisa Nezu: "Turbulence in Open-channel" Balkema, 282 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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