草木ダム貯水池の洪水流動を考慮した洪水流入量，放流量の評価方法に関する研究
キーワード:
dam reservoir,
reservoir flood flow analysis,
flood propagation,
storage volume,
water surface profiles,
flood management
2016 年 22 巻 p. 7-12
詳細
2016 年 22 巻 p. 7-12
The flood management in dam reservoirs has been performed by using the condition that a water level observed near the dam body holds uniformly everywhere in the reservoirs. However, floods in dam reservoirs flow down transforming a water-level and a discharge by flows in three-dimensional reservoirs. For efficient and safe dam reservoir management, it is necessary to establish the evaluation method of inflow and outflow discharges considering the mechanism of water storage, and three-dimensional flow structures in dam reservoirs. In this study, the quasi-three dimensional numerical model for explaining three-dimensional flow features was applied to the Kusaki dam reservoir. The evaluation method of inflow and outflow discharges based on the numerical model and observed temporal changes in flood water surface profiles was proved to be valid.
