关键词: 河流, 泥沙, 治河, 防洪, 水力学及河流动力学, 长江流域, 水利

Abstract: Researches and practices on river & sediment and river regulation & flood control of the Yangtze River are comprehensively reviewed in terms of three aspects: theoretical researches on river & sediment, researches of river modeling and special study on flow & sediment, and practical application of river regulation & flood control. First, theoretical researches on river & sediment includes: river classification and morphology research such as stream-order gradation, river segmentation and river-regime-fitted grid, as well as sediment characteristics and movement while of demarcating grain size of river sediment, changes in runoff and sediment load, and methodological contrast between sediment budget and morphological change. Second, researches of river modeling and special study on flow & sediment consists of modeling on river flow and sediment transport and special studies on river and sediment, in which the modeling researches include development, applications and key technologies of river models, while the special studies give examples of essential features and numerical modeling of bend flow, features of cavity flow and sediment transportation and influence of physical model distortion, and impact of shoreline and island utilization on river-lake functions. Third, practical applications of river regulation & flood control comprises researches on large hydro-engineerings (e.g. Three Gorges Project, Gezhouba Project, and South-to-North Water Diversion Project), researches on major issues of river regulation, and practical application of flood control of the Yangtze River. Last but not the least, issues such as river research based on sediment, sediment research unlimited to river, and interaction between river and sediment should be enhanced, while interactive connection and achievement transformation between theoretical researches on river and sediment and practical application for river regulation and flood control should be also strengthened.

Key words: river, sediment, river regulation, flood control, hydraulics and river dynamics, Yangtze River basin, water resources