STUDYING THE FLOOD REGULATION CAPACITY OF THE RED RIVER UPSTREAM RESERVOIR TO OVERCOME INCIDENTS AT LIEN MAC DYKE

Abstract

This article presents a study on the flood regulation capacity of the upstream reservoirs of the Red River. One and two-dimensional numerical analyses have been carried out to simulate the hydraulic flow of the upstream reservoir and the downstream river network. The effectiveness of flood mitigation in a number of reservoi capacity scenarios have been estimated. Calculation results show that, the capacity of reservoirs of 5,553 million m3 would likely reduce the the flooded downstream area by 47,528 ha in case using a part of the capacity of the construction. The time when the reservoirs completely close the floodgates without discharging water to the downstream is from 27 to 30 hours, which is adequate for the Lien Mac dyke to be completely rectified within 24 hours.