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The vane work is one of the bank protection methods suitable for the curved river. In the present vane design the effects of vanes are predicted by the bed topography analysis in the lateral direction. Vanes are installed not only in a uniformed curved reach, but in a reach changing from curve to straight or vice versa. For the calculation of bed variation in the latter reach we have to consider bed load movement in the longitudinal and lateral directions.In this paper 2D bed variation is simulated by the use of 2D flow model considering secondary flow generated by centrifugal force and vanes in the Oono River, and the applicability and problems of this calculation method are described based on this simulation.

BED TOPOGRAPHY ANALYSIS AND EFFECTS OF VANE WORKS IN A CURVED REACH CHANGING IN PLAN FORM LONGITUDINALLY