汕尾港出海航道波浪作用下底沙回淤研究

Sedimenl Dcposit Undcr Wave Action in Shanwei Harbour

通过现场调查与动床模型试验，分析研究汕尾港海区波浪运动、泥沙来源及破波带内沿岸输沙与岸滩变化；评估目前出海航道轴线走向的合理性，采用夏部公式、Ｅｎｇｅｌｕｎｄ的底沙公式和詹·弗莱兹夫的推移质回淤量计算公式，按正常年份波浪作用与特殊年份台风浪作用等不同情况，预测了５０００吨级与万吨级的港池和出海航道底抄回淤量，提出了维持港池、航道水深与减少回淤量的工程措施。

ave transformatiun,sediment sources,longshore sediment transport inside suffzone andbeach trdnsformation in Shanwei Harbour are studied by field investigation and laboratory modelling with the movable bed.Rationality of layout of the navigable waterway is evaluated. By using Engelunds formula of bed load transport and S.Fleisfu's formula of bed load depositioti.the deposition quantity of bed load in harbour area and the navigable waterway are forecast for the harbour with 5 000 t,10 000 t and 20 000 t scale according to the wave states in normal and special years. The engineering measures of maintaining harbour area and navigable waterway are proposed.