Nghiên cứu tính toán dự báo bồi lắng hồ chứa - Áp dụng cho hồ chứa Pleikrong

Abstract

In this study, SWAT and HECRAS models were applied to study reservoir sedimentation prediction and applied to Pleikrong reservoir. The results show that at the beginning years of operation, the sedimentation rate was quite high and the sedimentation located mainly from the end of the reservoir to the location of about 5 km from the dam. Year by year, the sedimentation gradually proceeds towards the dam. The degree of sedimentation at different locations are significantly different. By 2050, after 40 years of operation, the location of 5.36 km from the dam has highest sedimentation with the sediment thickness of 14.74m. Meanwhile, at the location of 25.61 km from the dam where the bed slope is very steep, the bed is slightly eroded. At the location near the inlet to the hydropower plant the sediment thickness is 0.75m. The results has a practical significance in reservoir sedimentation management and is the basis for proposing some appropriate solutions to minimize reservoir sedimentation