南汇边滩细颗粒泥沙动水沉降的实验研究

Experimental Research on Fine Particial Sediment in the Flowing Water in Nanhui Marginal Bank of Yangtze River Estuary

细颗粒泥沙在盐水中的絮凝沉降是河流泥沙向海输送过程中在河口区发生的重要现象之一。文章根据室内环形水槽实验对南汇边滩泥沙由盐度和含沙量这两种因素在不同的流速条件下的沉降特性进行了研究。该实验结果对该区域实施围垦工程有实际意义。

The flocculation and settlement of fine particle sediment in the brine, which forms at the estuary when the sediment flow into the sea, is one of the important phenomena. This paper makes a research on the settlement of the sediment in Nanhui beach from two factors： salinity and sediment concentration under different velocity according to indoor circulating flume experiment. The result of the experiment has practical significance in reclamation project in this area.