RIVER MANAGEMENT FOR MITIGATING BED DEGRADATION AND CHANNEL WIDTHS REDUCTION IN THE SANDY HII RIVER

DOI

Bibliographic Information

Other Title
  • 砂河川斐伊川の河床低下，低水路幅の縮小化と是正のための今後の対応

Abstract

<p>In the sandy Hii River, sediment supplies from the upper basin have been decreasing due to constructions of check dams. The sediment transport in the Hii River occurs during not only the flood but also the ordinary discharge because of small and uniform sand composing the river bed. Therefore, river bed degradation and channel widths reduction downstream from the Igaya groundsill have developed due to non-equilibrium sediment transports at the groundsill during the ordinary discharges and small scale floods. We proposed proper shapes of the groundsill and river cross-section for mitigating the river bed degradations and channel widths reductions by using the numerical simulation model for long-term bed topographic changes in the river.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390010292574159872
  • DOI
    10.11532/river.23.0_507
  • ISSN
    24366714
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Allowed

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