ĐÁNH GIÁ KHẢ NĂNG ĐIỀU TIẾT CỦA CÁC HỒ CHỨA LỚN TRÊN HỆ THỐNG SÔNG ĐÀ KHI XẢY RA SỰ CỐ VỠ ĐẬP ĐỐI VỚI CÁC BẬC THANG PHÍA TRÊN

Abstract

The reservoirs in Da river system play key roles in flood control and regulation for the Red river delta. Previous flood calculation studies have considered flood release and storage capacity with respect to high flood levels (designed flood, PMF). However, the capacity of the reservoirs for flood regulation in cases of dam break in the upstream has not been fully evaluated. This paper presents the impacts of upstream dam breaks on the lower systems. The results show that not all the break dams in the upper reservoirs cause damages for the lower reservoirs, it depends on flood storage, flood release of the reservoirs and the characteristics of the hydrograph.