著者

松延 和彦 石川 忠晴 安藤 誠

出版者

公益社団法人 土木学会

雑誌

土木学会論文集B1(水工学) (ISSN:2185467X)

巻号頁・発行日

vol.71, no.4, pp.I_559-I_564, 2015 (Released:2016-01-29)

参考文献数

13

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This paper presents one dimensional model to estimate the evolution process of river meandering. The model is composed of a part to calculate the channel bed deformation under the action of helicoidal flow due to secondary circulation and a part to calculate the channel axis deformation. The former part was verified with the result of existing flume experiment. In the latter part, the rate of channel shifting was assumed to be proportional to the velocity deviation at the side banks from the average value following to some existing studies. The calculation was compared for meandering length with image data of natural rivers which were collected from the Google Earth. The both results showed that the meandering length is proportional to the channel width in average, but the proportional constant obtained from the calculation was about double of that obtained from the observation.