姫川の河道特性に関する実証的研究

抄録

In order to clear the channel characteristics of the Hime river, the history of the hydroelectric power development and the disaster were examined based on the consideration on the topography, the geology, and the disaster in 1995. In the Hime valley, a vast channel is clearly noticed on the mid-stream through the field investigation, it's considered that the channel characteristics are divided into several classes. As the results, the function as the sediment storage area of the vast channel on the mid-stream was confirmed. Furthermore, two follow in gcontribution of the existence of the channel characteristics were found: 1) For prevention of the deposited silt to the lower valley in the mountain disaster. 2) For stabilizing the main river-bed evolution for several years after the disaster.