长江口航道淤积三层模式的建立与应用

Three-layer mode for sedimentation in the deep navigation channel of the Yangtze Estuary

长江口含沙量垂线分布很不均匀,底部存在高浓度含沙层,是造成航道淤积的重要因素。航道淤积由三部分构成:悬沙、推移质和底部高浓度含沙层。本文建立了航道淤积三层模式,并应用于长江口航道淤积数值模拟计算,计算结果良好。

Vertical distribution of sediment concentration in the Yangtze Estuary is not uniform. The high sediment concentration exists near the bed which is the important factor for the sedimentation in the navigation channel. The channel sedimentation comes from three parts, i. e. the suspended sediment, high sediment layer, and bed load. The three-layer mode for sedimentation in the navigation was set up and applied to the Yangtze Estuary.