市川の歴史的河川施設機能を考慮した河川整備
キーワード:
river improvement,
historical river facility,
oblique weir,
groin,
three-dimensional survey three-dimensional analysis
2019 年 25 巻 p. 255-260
詳細
2019 年 25 巻 p. 255-260
The Tohori construction area in Ichikawa have two oblique weirs, groynes and sluices, which are historical river facilities. Those facilities have maintained flood control and water utilization of Himeji City until today. However, their hydraulic performance has not been evaluated quantitatively. In this study, the hydraulic performance of those facilities was evaluated using three-dimensional survey and three-dimensional analysis. As a result, one of the oblique weirs had the effect of lowering the water level on the upstream at flood and the groynes had the effect of controlling the flow toward the downstream sluice. Therefore, their hydraulic performance were reflected in the river improvement.
