With the increase of the construction of the artificial sandy beach above the tidal flats,the research of artificial beach profile's transverse sediment transport has a very important and practical significance.It is complicated to build artificial beach on the original beach that is adapted to the coastal dynamic.The artificial beach in practical project is affected by engineering measure,so the profile form is more difficult to predict.Based on the method of physical model test,the form changes of the artificial beach profile restricted by the debris barrier and the protection of bank are studied in different water level and wave conditions.At the same time,the equilibrium profile model is used to calculate the relative stable profile,and the conditions needed to form a stable profile are obtained. The results of the experiment verify the applicability of 1:15 of the initial bank slope,and conclude that when the structure has few influence on wave,a balanced beach profile could be formed.%随着在滩涂之上建设人工沙滩的举措逐渐增多,人工沙滩剖面横向输沙研究有非常重要的现实意义.在与海岸动力相互适应的原岸滩上建造人工沙滩是较为复杂的问题,并且实际工程中的人工沙滩还受到工程措施的影响,剖面形态较难预测.在原海滩上建造人工沙滩较复杂,它适应了海岸的力量;实际工程中的新滩受工程测量的影响,因此其剖面形状难以预测.针对这个问题,采用物理模型试验的方法,针对受挡沙坝及护岸限制的人工沙滩剖面在不同水位及波浪条件下的形态变化进行试验研究,并应用工程中常用的平衡剖面模型对相对稳定的剖面进行计算比较,得出了形成稳定的剖面形态所需要的条件.试验结果验证了初始岸滩坡度1:15的适用性,得出了当波浪受结构物影响较小时可以形成均衡沙滩剖面的结论.
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