河口泥沙通量研究方法浅析

A Brief Analysis on Study Methods of Delta Sediment Flux

总结了国内外河口泥沙通量研究的现状,内容涉及到水文泥沙统计模型、沉积动力学与数学模型。探讨了泥沙通量测量仪器的研发及其应用,简述了河口段水流挟沙力及河床阻力的研究状况。结论认为:①黄河口泥沙通量的研究,可能要包括下游河道某断面(譬如利津断面)水沙通量的研究、河口入海区水沙通量的研究、整个渤海水沙通量的研究,甚至还要研究河口的“过滤器”效应;②在研究断面水沙通量的过程中,需要采用等面积时变网格技术,以期减少统计误差;③总结黄河口泥沙通量的研究方法,对于研究黄河口泥沙通量具有指导意义。

The paper summarizes the present status of study on delta sediment flux both at home and abroad,involving hydro-sediment statistical model,deposition dynamics and mathematical model.It approaches the development of surveying instruments of sediment flux and its application and briefly describes the sediment carrying capacity at the delta and study status on bed resistance.The conclusion is shown that a) the study of sediment flux of the Yellow River delta should include the study of runoff and sediment flux of a certain section(such as Lijin section) on the lower reaches,study of runoff and sediment flux at ocean outfall, study of runoff and sediment flux of the whole Bohai Sea and even the study on the effects of 'filter' of the delta;b) it should adopt the techniques of equal-area time variation mesh for reducing statistical errors during the study of cross section runoff and sediment flux and;c) to summarize the study methods of sediment flux of the Yellow River delta has a guiding significance for studying sediment flux of the Yellow River delta.