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-  2018 

黄河河口段河长与水沙过程的响应关系 Relationships between length of estuarine reach of Yellow River and flow and sediment regime

Keywords: 黄河口,河口段,河长,水沙条件

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Abstract:

为明确黄河河口段河长与水沙过程的响应关系,采用实测资料分析及理论探讨方法,分析了1954~2012年间不同行河时期黄河河口段的水沙变化(利津站)及河长变化.研究表明:1954~2002年水沙呈下降趋势,2002年后因小浪底调水调沙作用,2002~2007年水沙量较1996~2002年略有回升,随后呈继续减小趋势;河口段河长随改道骤减,随后以先快后慢的速率不断增长,增长速率近年受人类活动影响显著.在考虑累计来沙量单一因素的基础上,引入年均来沙系数,综合考虑水沙条件,建立了分时期(不同流路或汊道)及半统一的黄河河口段河长经验计算公式,计算效果较好,可适用于不同条件下河口段河长的计算及预测

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