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論文投稿 Quantification of Levee Breach Volume Based on Levee Breach at the Chiyoda Experimental Flume

作成年度 2014年度
論文名 Quantification of Levee Breach Volume Based on Levee Breach at the Chiyoda Experimental Flume
論文名(和訳) 千代田実験水路破堤拡幅実験に基づく堤体崩壊量の定量化
論文副題
発表会
誌名(No./号数) 土木学会英文論文集(Journal of JSCE), (Hydraulic Engineering, B1)
発表年月日 2014/04/09
所属研究室/機関名 著者名(英名)
寒地河川チーム飛田 大輔(TOBITA daisuke)
寒地河川チーム柿沼 孝治(KAKINUMA Takaharu)
北海道開発局横山 洋(YOKOYAMA Hiroshi)
北海道開発局武田 淳史(TAKEDA Atsushi)
抄録
In recent years, disasters caused by typhoons, localized downpours and other phenomena have occurred frequently, and concern over the risk of large-scale water damage caused by river flooding has risen. Although damage resulting from levee breach is particularly serious, there is a lack of technical data on the mechanism behind that phenomenon. Accordingly, clarification of this mechanism is an important task in reducing the risk of flood damage. We examined the relationship between the quantification of the levee breach volume and hydraulic quantity. In the widening stage of levee breach, the breach phenomenon can be described in terms of the traction of soil masses from the levee body as a result of flood flow. It was also found that the relationship between the extent of dimensionless levee collapse and dimensionless traction force around the mouth of the breach can be expressed in a form similar to that of the bed load formula.
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