2018 年 24 巻 p. 239-244
When evaluating the scouring phenomenon downstream of the dam due to the flood discharge, observation of the flow at the actual dam will be an important basic data for predicting the change of the river bed by discharge. In this paper, regarding the flow condition observation at the time of dam release, we examined the advantages and disadvantages by observation using Handycam video, ITV camera, and UAV. We examined and evaluated how to utilize for the flow situation observation in the downstream of the dam. In particular, moving image by using UAV is advantageous in that the entire photographing can be observed directly above, and can be observed closer to the sky. In addition, we evaluated the flow condition at the time of discharging through moving image analysis by PIV.