大規模洪水時に大量の土砂流入を伴う石礫河川釜無川の洪水流・河床変動解析法に関する研究

DOI

書誌事項

タイトル別名
  • FLOOD FLOW AND BED VARIATION ANALYSIS METHOD FOR GRAVEL BED RIVER OF THE KAMANASHI RIVER WITH LARGE AMOUNT OF INFLOW SEDIMENT DURING LARGE-SCALE FLOOD

抄録

<p>The Kamanashi River is a steep river covered with gravel grains, cobbles and boulders. In 1982, the record breaking largest flood occurred and brought large scale sediment deposition in the river channels due to sediment yielding from the upstream mountainous areas. In addition, the grain size distributions became coarser in the upper reaches and finer in the lower reaches due to sorting during the flood. In this study, we developed and applied a flood flow and bed variation analysis method considering the nonequilibrium sediment motions of boulders, gravel grains and sands with large amount of suspended sediments in the 1982 flood. The developed model could explain that the bed materials in the downstream reaches became finer by fine sediment grains transported from the upstream to the downstream due to longitudinal sorting.</p>

収録刊行物

詳細情報

  • CRID
    1390854717777046528
  • DOI
    10.11532/river.26.0_657
  • ISSN
    24366714
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
  • 抄録ライセンスフラグ
    使用可

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