FUNDAMENTAL STUDY ON CRITICAL TRACTIVE FORCE OF SUBMERGED WOOD

• SANJOU Michio

  京都大学 工学研究科社会基盤工学専攻

• SUMI Tetsuya

  京都大学 防災研究所

• KOSHIBA Takahiro

  京都大学 防災研究所

• TAKATA Shoya

  土木研究所水工研究グループ

• OKAMOTO Takaaki

  京都大学 工学研究科社会基盤工学専攻

• NAGASAKA Kaori

  京都大学 工学研究科社会基盤工学専攻

Bibliographic Information

Other Title

• 沈木の限界掃流力に関する基礎的研究

Abstract

 It is reported that submerged woods in a dam lake induce gate blockage accidents. Hence the present study focuses on quantitative evaluation of critical tractive force. We measured the critical tractive force of the submerged wood in the laboratory flume varying systematically the size, density and initial yaw angle of the wood model. Also, performing movable bed experiments, an influence of initial burial depth was examined. It results in that the normalized critical tractive force could be expressed by universal formulae using Reynolds number and a correction function. Further, considering a stopping condition of the submerged wood moving downstream, we explained the distribution property of the submerged woods observed in the dam reservoir.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 77 (2), I_823-I_828, 2021

  Japan Society of Civil Engineers

Keywords

• submerged wood
• critical tractive force
• dam reservoir
• laboratory experiments

Details

• CRID: 1390291115046591104
• NII Article ID: 130008160236
• DOI: 10.2208/jscejhe.77.2_i_823
• ISSN: 2185467X
• Web Site: https://www.jstage.jst.go.jp/article/jscejhe/77/2/77_I_823/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed