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Best selection of intake location from viewpoint of the changes of low-water courses

Research Project

Project/Area Number 09660251
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionIwate University

Principal Investigator

MIWA Hajime  Iwate University, Faculty of Agriculture, Professor, 農学部, 教授 (30107180)

Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsLow-water course / Alternate bar / Meandering channel / Hydraulic experiment / Water course change / Suppression of bar migration / 交互砂州 / 砂州移動抑制
Research Abstract

The locations of diversion dams should be chosen by judging from the stabilization of low-water courses in front of their intakes. It is directed that a change of low-water course has close relation to the migration or the suppression of alternate bar, but their relations have not yet revealed clearly. We experimentally studied their relations in many meander channels in some of which bars can migrate and in some of which bar migration is suppressed. Basically, the stabilization of a low-water course is obtained in the meander channel whose bend angle is larger than the critical, one, and alternate bars cannot migrate downstream in that channel. The critical bend angle becomes smaller as the meander-length becomes longer. We also discovered the phenomena that critical bend angle changes with different hydraulic conditions and that low-water course is almost stabilized in spite of the migration of alternate bar in some channels.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 三輪 弌: "実験蛇行水路における交互砂洲の移動抑止限界" 自然災害科学. 17-4 (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 永吉武志: "みお筋変動と交互砂洲移動との関係に関する実験的研究" 農業土木学会論文集. 67-1 (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 永吉武志: "蛇行水路側岸沿いの河床形状変化に関する実験的研究" 水工学論文集. 第43巻 (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 相沢要一: "実験蛇行水路内の砂洲形状に対する流量変化の影響" 東北地域災害科学研究. 35 (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] MIWA,H.: "Experimental studies on the suppression limit of alternate bar migrations throuth sine-generated meander channels" Journal of Japan Society for Natural Disaster Science. 17-4 (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] NAGAYOSHI,T.: "Experimental studies on the relations between changes of low-water courses and migrations of alternate bars" Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering. 67-1 (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] NAGAYOSHI,T.: "Experimental studies on bed form changes along meander channel banks" Proceedings of Hydraulic Engineering, JSCE. 43 (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] SOZAWA,Y.: "Experimental studies of the effects of discharge variations on channel bed-forms in an experimental meander channel" Tohoku Journal of Natural Disaster Science. 35 (in print). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 三輪 弌: "実験蛇行水路における交互砂州の移動抑止限界" 自然災害科学. 17-4 (印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 永吉武志: "みお筋変動と交互砂州移動との関係に関する実験的研究" 農業土木学会論文集. 67-1 (印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 永吉武志: "蛇行水路側岸沿いの河床形状変化に関する実験的研究" 水工学論文集. 第43巻 (印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 相沢要一: "実験蛇行水路内の砂州形状に対する流量変化の影響" 東北地域災害科学研究. 35 (印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 三輪弌: "長波長の実験蛇行水路における交互砂洲の挙動" 東北地域災害科学研究. 34(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 永吉武志: "実験蛇行水路における河岸深掘れの変動状況" 東北地域災害科学研究. 34(印刷中). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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