摘要
本文从射流的角度探讨了水东泻湖海湾潮汐通道外泄水流的扩散运动,根据实测流速资料推求射流流速的沿程变化,提出该泻湖海湾的射流扩散模式,以射流的动力体系阐述了拦门沙的物质组成、沉积结构和其形成过程,并预测了将来在拦门沙上进行工程治理后的射流扩散变化和拦门沙位置的变动,以及治理工程成功与否的可行性判断。
The tidal inlet of the Shuidong lagoon is deep and navigable,however,there is a entrance bar which hinders shipping because of the shallow water depth.On the basis of jet,this paper deals with the diffusion of outflow and jet velocity variation with the distance seaward and suggests the jet diffusion model in the Shuidong lagoon.It is expounded that sediment component and structure of the entrance bar as well as its evolution responded well to jet dynamic system.Chan- ges of the jet diffusion and the entrance bar situation and possibility in project are estimated when the entrance bar is to be harnessed with project in the near future.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1990年第3期177-182,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
潮汐通道
拦门沙
水流
泥沙
潮汐
tidal inlet
outflow
jet diffusion
jet model
entrance bar
Shuidong lagoon
