Experimental Study of a Slit Sabo Dam Constructed in a River Bend

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Other Title
  • 湾曲部に計画するスリット砂防ダムの機能と効果に関する実験的研究
  • ワンキョクブ ニ ケイカク スル スリット サボウ ダム ノ キノウ ト コウカ ニ カンスル ジッケンテキ ケンキュウ

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Abstract

Recently the slit sabo dam has become the mainstream in the construction of various types of sabo dams because it dose not usually trap and retain, but rather releases sediment and earth nutrients that the down stream area needs. The slit sabo dams control a large quantity of sediment which is liable to bring about disasters when storms occur. In recession periods, the slit sabo dams, however, could release more sediment than expected. Appropriately designed slit sabo dams at river bends would be able to increase checked sediment to give stable sediment control. A hydraulic model experiment was carried out to see how the location and structure of a slit sabo dam constructed in a bend of Joganji River contributes to sediment control. Through the experiments, it was made clear that a slit sabo dam constructed at the downstream end of a bend with a slit prepared on the inner side of the sabo dam is more effective for sediment control than that with a slit on the outer side.

Journal

  • Sabo Gakkaishi

    Sabo Gakkaishi 51 (6), 20-26, 1999

    Japan Society of Erosion Control Engineering

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