AM06-07-015 掃流砂による糸状藻類の強制剥離に関する研究(移動床の流体力学(4),一般講演)

概要

論文の詳細を見る
A prediction model of detachment of filamentous algae, which consist of flow equation, sediment transport equation and the relation between sediment load and algal detachment, was constructed and applied to a actual river. The rate of algal detachment due to the artificial flood in the 2km downstream region from Miyagase dam, Kanagawa, Japan is estimated by this model. The comparison between the observed rate (23%) and the calculated rate (27%) shows a good agreement. The same calculation was performed for an assumed river in which the river bed contains a larger amount of fine sediment then the present river bed in the observation area. In this case, almost all attached algae were removed by the fine sediment load. This result suggests that an artificial flood with fine sediment supply is indispensable to remove the filamentous algae in downstream of dam.
日本流体力学会の論文
2006-09-05