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Study on the mechanism of high turbidity flow during sediment flushing operation and its environmental impact assessment

Research Project

Project/Area Number 16360245
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 水工水理学
Research InstitutionKyoto University

Principal Investigator

SUMI Tetsuya  Kyoto University, Graduate School of Management, Associate Professor, 経営管理研究部, 助教授 (40311732)

Co-Investigator(Kenkyū-buntansha) 藤田 正治  京都大学, 防災研究所, 教授 (60181369)
田中 宏明  京都大学, 工学研究科, 教授 (70344017)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥14,100,000 (Direct Cost: ¥14,100,000)
Fiscal Year 2006: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2004: ¥10,700,000 (Direct Cost: ¥10,700,000)
KeywordsReservoir sediment management / Sediment flushing / Sediment / Environmental impact assessment / Turbidity flow / Suspended sediment concentration / Dissolved oxygen / 砂防ダム / 泥水
Research Abstract

In the Kurobe River, coordinated sediment flushing operations of Dashidaira and Unazuki dams have been executed since 2001. Sediment flushing is the most economically effective reservoir sediment management method and it can contribute to sediment supply to the downstream from the viewpoint of the comprehensive sediment management in a sediment routing system. On the other hand, environmental damages may occur if we do not care biological acceptance downstream since huge amount of sediment will be discharged in a short period.
This study focuses on the mechanism of high turbidity flow during sediment flushing operation and the assessment method of the environmental impacts. Study topics are as follows.
1)Inflow and deposition process of fine sediment in a reservoir, and the mechanism of high turbidity flow during sediment flushing operation
Sediment-traps are installed in the Unazuki reservoir, and fine sediments inflow and deposited in the reservoir have been analyzed in an every month by grain size distribution, TOC, concentration of iron oxide (II) and so on which may influence on water quality changes during sediment flushing operations. Sediment and water mixture surface profile which eroded during sediment flushing operation have been measured by the 3D Laser scanner. Surface velocities have been measured by PIV method. Based on these data, relationship between reservoir water level and sediment erosion phenomena, and related parameters such as water discharge, tractive force and drawdown speed is discussed.
2)Impact assessment method on the water quality changes caused by the operation
When, how high and how long the high turbidity will occur are the main topics and other water quality changes such as DO decrease are also discussed. Assessment method to compare environmental impacts by these water quality changes is proposed in regard to SS, DO and grain size distribution.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (27 results)

All 2007 2006 2005

All Journal Article (27 results)

  • [Journal Article] 貯水池に堆積した微細粒土砂の浸食特性に関する研究2007

    • Author(s)
      角 哲也
    • Journal Title

      水工学論文集 51

      Pages: 871-876

    • NAID

      130003842560

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] PIVを用いたフラッシング排砂時の細粒土砂流出過程計測に関する研究2007

    • Author(s)
      角 哲也
    • Journal Title

      水工学論文集 51

      Pages: 1075-1080

    • NAID

      130003842362

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Study on measurement of fine sediment discharge process during sediment flushing operation using PIV2007

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Annual Journal of Hydraulic Engineering, JSCE 51

      Pages: 1075-1080

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Physical and erosion properties of fine cohesive sediment silted in reservoirs2007

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Annual Journal of Hydraulic Engineering, JSCE 51

      Pages: 871-876

    • NAID

      130003842560

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] PIVを用いたフラッシング排砂時の細粒土砂流出過程計測に関する研究2007

    • Author(s)
      角 哲也, 村崎充弘, 平 謙二, 新房健一, 名倉 裕, 玉置晴朗
    • Journal Title

      水工学論文集 51

      Pages: 1075-1080

    • NAID

      130003842362

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 貯水池に堆積した微細粒土砂の浸食特性に関する研究2007

    • Author(s)
      角 哲也, 井口 真生子
    • Journal Title

      水工学論文集 51

      Pages: 871-876

    • NAID

      130003842560

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 密度流排出を用いた黒部川連携排砂の高度化に関する研究2006

    • Author(s)
      白音包力皋
    • Journal Title

      河川技術論文集 12

      Pages: 265-270

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 粒度組成を考慮したダム排砂時の微細土砂流下に伴う河川環境影響評価に関する検討2006

    • Author(s)
      角 哲也
    • Journal Title

      河川技術論文集 12

      Pages: 253-258

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 貯水池下流部に堆積した微細粒土砂の巻き上げ特性に関する実験的研究2006

    • Author(s)
      角 哲也
    • Journal Title

      水工学論文集 50

      Pages: 925-930

    • NAID

      130004043898

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 宇奈月ダムフラッシング排砂時の細粒土砂流下特性2006

    • Author(s)
      角 哲也
    • Journal Title

      水工学論文集 50

      Pages: 913-918

    • NAID

      130004043896

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Study on improvement of sediment flushing operation in Kurobe River by using density current venting2006

    • Author(s)
      Baiyinbaoligao
    • Journal Title

      Advances in River Engineering, JSCE 12

      Pages: 265-270

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Study on environmental impact assessment of fine sediment discharge during sediment flushing operation considering grain size distribution2006

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Advances in River Engineering, JSCE 12

      Pages: 253-258

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characteristics of fine sediment discharge during sediment flushing of Unazuki dam2006

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Annual Journal of Hydraulic Engineering, JSCE 50

      Pages: 913-918

    • NAID

      10021137960

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Experimental study on erosion of cohesive sediments silted in downstream parts of reservoirs2006

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Annual Journal of Hydraulic Engineering, JSCE 50

      Pages: 925-930

    • NAID

      130004043898

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 粒度組成を考慮したダム排砂時の微細土砂流下に伴う河川環境影響評価に関する検討2006

    • Author(s)
      角 哲也, 白音包力皋
    • Journal Title

      河川技術論文集 12

      Pages: 253-258

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 密度流排出を用いた黒部川連携排砂の高度化に関する研究2006

    • Author(s)
      白音包力皋, 角 哲也
    • Journal Title

      河川技術論文集 12

      Pages: 265-270

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 貯水池内に堆積した微細粒土砂の浸食に関する実験的研究と数値解析への適用2006

    • Author(s)
      角 哲也, 井口 真生子
    • Journal Title

      粘着性土の浸食に関するシンポジウム 予稿集 3

      Pages: 13-20

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 宇奈月ダムフラッシング排砂時の細粒土砂流下特性2006

    • Author(s)
      角 哲也, 白音包力皋
    • Journal Title

      水工学論文集 50

      Pages: 913-918

    • NAID

      130004043896

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 貯水池下流部に堆積した微細粒土砂の巻き上げ特性に関する実験的研究2006

    • Author(s)
      角 哲也, 井口真生子, 藤井智康
    • Journal Title

      水工学論文集 50

      Pages: 925-930

    • NAID

      130004043898

    • Related Report
      2005 Annual Research Report
  • [Journal Article] SMDPを用いたダム排砂時のSS観測について2005

    • Author(s)
      角 哲也
    • Journal Title

      河川技術論文集 11

      Pages: 315-320

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] フラッシング排砂時における貯水池堆砂の侵食・堆積過程計測に関する研究(その2)2005

    • Author(s)
      角 哲也
    • Journal Title

      水工学論文集 49

      Pages: 1033-1038

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Monitoring of Suspended Sediment Concentration with SMDP during Reservoir Sediment Flushing2005

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Advances in River Engineering, JSCE 11

      Pages: 315-320

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Study on Measurement of Erosion-Deposition Process of Reservoir Sediment during Flushing Operation(Part2)2005

    • Author(s)
      Tetsuya Sumi
    • Journal Title

      Annual Journal of Hydraulic Engineering, JSCE 49

      Pages: 1033-1038

    • NAID

      130003842002

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] SMDPを用いたダム排砂時のSS観測について2005

    • Author(s)
      角 哲也, 白音包力皋, 森田佐一郎
    • Journal Title

      河川技術論文集 11

      Pages: 315-320

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 排砂に伴う濁りが魚類に与える生理的影響とその評価法2005

    • Author(s)
      木下篤彦, 藤田正治, 田川正朋, 水山高久, 澤田豊明
    • Journal Title

      砂防学会誌 58

      Pages: 34-43

    • NAID

      40006927365

    • Related Report
      2005 Annual Research Report
  • [Journal Article] フラッシング排砂時における貯水池堆砂の侵食・堆積過程計測に関する研究(その2)2005

    • Author(s)
      角 哲也, 村崎充弘, 藤永清和, 名倉 裕, 玉置晴朗, 今城貴弘
    • Journal Title

      水工学論文集 49

      Pages: 1033-1038

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 高原川流域における土砂生産特性2005

    • Author(s)
      藤田正治, 澤田豊明, 志田正雄, 伊藤元洋
    • Journal Title

      水工学論文集 49

      Pages: 1075-1080

    • NAID

      130003842009

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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