建立了以舟山螺头水道海域为重点研究区域的平面二维潮流泥沙数学模型,模型对螺头水道海域2005年1月的悬沙场进行了模拟,将模拟结果与实测资料进行比较,二者吻合较好,模拟结果分析表明:螺头水道内含沙量由西至东逐渐减小,涨落潮主流流路的差异使得水道内存在两股相反的悬沙净输运趋势,但总体净输沙方向为落潮流方向；含沙量与涨落潮流过程密切相关,水道内以平流输沙作用为主,沉降及再悬浮作用小,是长江口及杭州湾向外海输沙的主要通道而非主要沉积区域.%This paper presents a 2D tidal current and suspended sediment model which takes the Luotou strait as the key research area. The model was eadopted to carry out numerical simulation of suspended sediment movement in the Luotou strait area in January in 2005. A good agreement was found between the observation data and computed results. Analyses on the computed results showed that the sediment concentration was decreased from the west to the east of the Luotou strait, and there were two opposite trends of the net sediment transport in the strait because of the difference between the main stream of the flood and ebb tidal current, but the total net sediment transport direction in the strait was the ebb tidal current direction. There was a good correlation of the sediment concentration and the process of flood and ebb current, which meant that the advective sediment transport was the major function of the sediment transport in the strait and made the Luotou strait the main channel of sediment transport from the Yangtze River estuary and Hangzhou Bay .to the open sea.
展开▼
