捷水路が設置された湾曲河道区間の水理特性に関する実験的研究

• 市山 誠

  パシフィックコンサルタンツ株式会社 東京工業大学

• 石川 忠晴

  東京工業大学

書誌事項

タイトル別名

• EXPERIMENTAL STUDY ON THE FLOW CHARACTERRISTICS IN A BENDING RIVER SECTION WITH A CUT-OFF CHANNEL
• ショウスイロ ガ セッチ サレタ ワンキョク カドウ クカン ノ スイリ トクセイ ニ カンスル ジッケンテキ ケンキュウ

抄録

This study investigated the basic hydraulic characteristics of a bending river section with a cut-off channel by flume experiment. Contents of measurements included the longitudinal profile of water surface, flow velocity in cross sections by an electromagnetic current meter, and the surface flow velocity by using PIV methods. In addition, tendency of bed sediment motion was observed by bottom tracer experiment. Installation of cut-off channel resulted in a wide dead water area at the side of divergence in the main stream and low-velocity area at the center of the confluence. The point of surface flow which attacked the bank moved upstream in the main stream of distribution. Then the secondary flow became stronger, and the direction of bottom flow was strongly skewed in a transverse direction. Moreover, the bottom tracers moved and accumulated rapidly from the outer bank towards the inner bank at the curve of distributaries downstream. It suggested the occurrence of scour and sedimentation.

収録刊行物

• 土木学会論文集Ｂ１（水工学）

  土木学会論文集Ｂ１（水工学） 70 (4), I_727-I_732, 2014

  公益社団法人 土木学会

キーワード

• 捷水路
• 粒子画像流速測定法
• 水理実験
• 二次流
• 底面流況トレーサー

詳細情報

• CRID: 1390001205353259904
• NII論文ID: 130005070159
• NII書誌ID: AN10426673
• ISSN: 18808751
• ISSN: 2185467X
• ISSN: 09167374
• DOI: 10.2208/jscejhe.70.i_727
• NDL書誌ID: 025432209
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025432209
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可