六角川水系牛津川における２遊水地の洪水調節効果について

抄録

The primary objective of this study is to demonstrate that a numerical model, which are comprised of the distributed hydrological model, the 2D unsteady flow model based on FDS scheme as well as unstructured finite-volume method, and operation of drainage system, is an effective tool to evaluate flood control effects of retarding basins. Based on numerical simulations by the model, the height and width of an overflow levee of the projected Ushidugawa retarding basin was examined to maximize the storage capacity for flood of the Ushidugawa and Mutabe retarding basin in the Rokkaku river.