同一水系内のダム貯水池群を対象としたアセットマネジメント手法に関する検討

Abstract

In Japan it has been difficult to construct new dams because of environmental and financial restrictions. So it is important to maintain existing dams suitably. Especially reservoir sedimentation is one of the most important problems for securing long term functions of dams. It is, therefore, necessary to plan and carry out efficient and economically feasible asset management for existing dam reservoirs. In this study, we studied efficient asset management measure for several dams in the same river basin. We analyzed the several risks regarding flood control and water utilization based on sedimentation progress, and proposed how to prioritize several dams for sediment management. As the result, we showed the advantage of asset management measure to deal with dams in a group.