GENERATION MECHANISM OF SCOUR FORMED DOWNSTREAM OF A LARGE SCALE GROIN

• ITO Takeshi

  Nagoya Institute of Technology CTI Engineering Co.,Ltd

• TOMINAGA Akihiro

  Nagoya Institute of Technology

Bibliographic Information

Other Title

• 大規模水制下流に発生する洗掘の発生機構に関する考察
• ダイキボスイセイ カリュウ ニ ハッセイ スル センクツ ノ ハッセイ キコウ ニ カンスル コウサツ

Abstract

Large-scale groins were constructed in the late 19th century in the downstream basin of the Kiso River. Riverside pools are formed between the groins, providing various ecological systems and favorable river environments. In this study, we analyzed configuration characteristics of scouring formed behind the large-scale groins of the Kiso River. We conducted field observations by setting up ADCP and other observation equipment downstream of the groins, and analyzed the downstream flow in relation to the scale of the flow, etc. through three-dimensional analysis. As a result, we found that a transverse vortex is formed downstream of the groin during flooding events, and that this vortex may have contributed to the generation of the downstream scouring.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 (4), I_1153-I_1158, 2015

  Japan Society of Civil Engineers

Keywords

• large-scale groins
• field observation
• tidal flow
• three-dimensional flow
• 3D-numerical model

Details

• CRID: 1390282680328803840
• NII Article ID: 130005123492
• NII Book ID: AN10426673
• ISSN: 18808751
• ISSN: 2185467X
• ISSN: 09167374
• DOI: 10.2208/jscejhe.71.i_1153
• NDL BIB ID: 026352867
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026352867
• Web Site: https://www.jstage.jst.go.jp/article/jscejhe/71/4/71_193/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed