2004 Volume 48 Pages 1051-1056
A project for river-restoration on the Shibetsu River was launched in 2000. For meander restoration, test flow of water started in March 2002 in a bifurcated channel formed by connecting the pre-improved channel (oxbow) with the present straight channel. In the eighteen months that have elapsed, the riverbanks and riverbed in the test section have greatly changed.
To analyze hydraulic phenomena under various conditions, this study aimed to develop a numerical calculation method that enables estimation of flow and riverbed evolution. We made calculations that reproduce riverbed evolution for the test section. The reproducibility was verified by comparing calculation results and measurements. We clarified the applicability and applicable range of the calculation method.
