It is shown that siltation in harbours is mainly induced by the sediment suspension due to waves, and the currents along the breakwaters play significant roles.

• 根据近年来粉沙质海岸的港口工程实践和流场数值模拟结果,分析了粉沙质海岸港口发生淤积的原因,指出了波浪掀沙是港口回淤的主要诱因,沿堤水流运动对航道淤积起着重要作用。