大礫により骨格が構成された河床の動的平衡状態に関する実験的研究

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タイトル別名
  • EXPERIMENTAL STUDY ON THE DYNAMIC EQUILIBRIUM STATE OF RIVERBED WITH LARGER STONE CONSTITUTING THE BED FRAME
  • ダイレキ ニ ヨリ コッカク ガ コウセイ サレタ カショウ ノ ドウテキ ヘイコウ ジョウタイ ニ カンスル ジッケンテキ ケンキュウ

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抄録

The objective of this study is to clarify the deformation process of river bed which is composed of extremely wide range of sediment. The frame of bed is constituted by the larger rock or stone which cannot move at all. In this study, "the dynamic equilibrium state of river bed" was investigated experimentally. The flow discharge and the sediment discharge of supply were the parameters in experiment. The sand and gravel existing in a void of the stones of the large particle size is affected by the stones. It is called a hiding effect. It was found from this study that the riverbed reaches different dynamic equilibrium state according to a supplying rate of the sand or gravel, and the surface elevation of sand and gravel exposed on the riverbed surface changes.

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