可児川河川改修に係る水理模型実験

概要

論文の詳細を見る
The purpose of this essay is to make experimental studies of the optimum cross sections to improve the Kani River between 1.6km and 2.6km in Gifu Prefecture. The geometric scale of the river model is 1/100 vertically and horizontally, and the model discharge Q and the coefficient of roughness n are decided on the basis of the Froude's law of similarity. The purposes of this experiment are: (1) to work out the maximum discharge in the present cross section. (2) to decide the improvement cross section that the design high water discharge can run through. (3) to decide the improvement cross section that the provisional high water discharge can run through. There exists a small island, by which the flow in the stream is divided, a little down the stream from the Tobashiri Bridge. This is one of the reasons to decrease the capacity of discharge area. In this study, only the right branch is improved, whereas the left branch remains unchanged because of the excellent natural landscape. In conducting this experiment, special attention is paid to the following points: (1) to lessen the excavation amount from the present cross section. (2) not to be over the design flood discharge. (3) to get 1 m clearance under the girder of Tobashiri Bridge. (4) to prevent the irregular turbulence near the bridge.
岐阜工業高等専門学校の論文
1987-03-20