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三门峡水库不同运用时期下游河道不同粒径泥沙的冲淤调整趋势
Adjustment of Erosion and Deposition for Different Sediment Size Groups of the Lower Yellow River during Different Operation Modes of the Sanmenxia Reservoir
【摘要】 通过分析黄河下游河道的实测水沙资料,对三门峡水库不同运用时期下游河道不同粒径泥沙的冲淤调整进行了分析、比较,得出了近30年下游河道不同粒径泥沙的冲淤调整趋势,即淤积有较大幅度地减少,其中汛期淤积量减少,非汛期河道由淤积状态转变为冲刷状态;在滞洪排沙运用条件下,出现以粗泥沙为主的淤积;在蓄清排浑运用条件下,由于来水来沙减少,河道淤积明显减少.
【Abstract】 Based on analysing the measured data of thirty years of the lower Yellow River, erosion and deposition for different sediment size groups and adjustment of channel erosion and deposition in different periods are analysed and compared in this paper.
【关键词】 下游河道;
不同时期;
不同粒径泥沙;
冲淤调整趋势;
【Key words】 lower river; different operation periods; different sediment size groups; adjustment of erosion and deposition;
【Key words】 lower river; different operation periods; different sediment size groups; adjustment of erosion and deposition;
【基金】 国家“八五”攻关项目!“-926-02-01-01子子专题
- 【文献出处】 水利水电技术 ,Water Resources and Hydropower Engineering , 编辑部邮箱 ,1997年06期
- 【分类号】TV145.1
- 【被引频次】5
- 【下载频次】61