摘要
本文针对黄河下游来水来沙特性和河道冲淤演变的特点，建立了复式断面数学模型，综合考虑了洪水演进、不同粒径泥沙的冲淤特性、断面上的冲淤分布、悬沙和床沙级配的变化调整及其对水流挟沙能力的影响等方面的问题。黄河下游１９７４～１９８８年实测水沙系列验证计算表明，模型在冲淤总量、沿程分布等方面均与实测资料符合良好；小浪底水库对黄河下游河道冲淤影响的计算结果与有关文献的结论也基本一致。
o counter the characteristics of coming water and sediment and evblution of erosion and deposition of the channel of the lower Yellow River. it builds a mathematical model of compoundcross-section considering comprehensively flood roasting, characteristics of erosion and depositionof different particles, erosion and deposition distribution in cross-section. variation regulation ofsuspended load and bed load gradation and effects to carrying capacity of flow' It tallies well withthe observed value by using the model for calculating the total volume of erosion and depositionand distribution along the course in the period of 1974-1988: it is also basically of the same as theconclusion of related documents when calculates the effects of erosion and deposition in the lowerYellow River by the XiaoLangdi Reservoir.
出处
《人民黄河》
CAS
北大核心
1994年第1期4-8,共5页
Yellow River
关键词
黄河下游
泥沙
河道演变
冲淤
数学模型
mathematical model. characteristic of erosion and deposition, carrying capacity, the Xiaolangdi Reservoir, the lower Yellow River
