摘要
潮汐条件下的水流挟沙能力模型必须考虑波浪和潮流的共同作用 ,模型的形式比较复杂 ,且在水深很小的潮滩浅水区域不能适用。笔者改进观测手段 ,获得了水深 0 1～ 2 0m的水动力过程与含沙量变化过程 ,根据实测资料 ,经过深入分析 ,判断出波浪、潮峰等因素对含沙量的影响轻微 ,提出了长江口潮滩适合浅水区域的水流流速与含沙量的模型 ,该模型符合传统动力模型的基本原理 ,并得到了较好的验证。
Under the tidal condition, sediment carrying capacity model must consider the joint action of wave and current. However, this model is not applicable to the shallow area of intertidal flats. To overcome this shortage, authors got the data of the hydrodynamic processes and variation processes of sediment content in the shallow area through the improved measuring method. By deeply analyzing the observed data, authors propose the relationship between sediment and velocity which suits to the shallow area of intertidal flats at the Yangtze Estuary. This model abides by the traditional hydrodynamic model's basic principles, and is well verified by the observed data.
出处
《泥沙研究》
CSCD
北大核心
2004年第5期56-61,共6页
Journal of Sediment Research
基金
国家自然科学基金重点项目 ( 4 0 13 10 2 0 )
国家自然科学基金项目资助 ( 4 0 173 0 3 0 )
关键词
挟沙能力
潮滩
浅水区域
长江口
sediment carrying capacity
intertidal flats
shallow water area
the Yangtze Estuary
