黄河上游宁蒙河段平滩流量变化与水沙过程的响应关系
Variation of bank-full discharge and its response relationship with flow and sediment processes of Ningmeng reach in Upper Yellow River
投稿时间:2024-02-26  修订日期:2024-05-06
DOI:
中文关键词:  黄河上游  宁蒙河段  平滩流量  水沙过程  河床演变  响应关系
英文关键词:Upper Yellow River  Ningmeng reach  bank-full discharge  flow and sediment processes  channel evolution  response relationship
基金项目:国家自然科学(U22A20237)
作者单位邮编
韩小军 滨州市引黄灌溉服务中心 256600
卢书慧 山东黄河河务局黄河河口管理局 
史红玲 中国水利水电科学研究院 
刘裕 滨州市引黄灌溉服务中心 
张海霞 滨州市引黄灌溉服务中心 256600
张治昊* 中国水利水电科学研究院 
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中文摘要:
      采用实测资料分析的方法,研究了黄河上游宁蒙河段平滩流量变化与水沙过程的响应关系。研究结果表明:黄河上游宁蒙河段沿程六站平滩流量总体变化趋势是减小,由二十世纪六十年代中期的3600~5800m3/s减小到目前的1900~4000m3/s。2000年前宁蒙河段三湖河口平滩流量与汛期水沙过程关系点群与2000年后两者关系点群存在明显分区,说明2000年后宁蒙河段河床演变机理发生了变化,遵循不同规律。建立的宁蒙河段三湖河口平滩流量与汛期水沙过程的定量关系式表明,宁蒙河段平滩流量随着汛期平均水量的增大(减少)而增大(减少),随着汛期平均来沙系数的增大(减小)而减小(增大),随着汛期水流过程参数的增大(减少)而增大(减少)。
英文摘要:
      Using the methods of data analyses, Variation of bank-full discharge and its response relationship with flow and sediment processes of Ningmeng reach was researched in Upperr Yellow River. The result show that, the variation trend of bank-full discharge of Ningmeng reach is to decrease in Upper Yellow River. From 3600-5800m3/s in the mid-1960s to the current 1900-4000m3/s. Compared with before 2000 and after 2000, there are obvious subregions of the point group of relationship between bank-full discharge of Sanhuhekou and flow and sediment processes of flood season. The evolution mechanism of Ningmeng reach changed in Upperr Yellow River after 2000, and follows different rules. According to the established relationship between bank-full discharge of Sanhuhekou and flow and sediment processes of flood season, the bank-full discharge increases (decreases) with the increase (decrease) of water quantity of flood season, it increases (decreases) with the decrease (increase) of the coming sediment coefficient of flood season, it increases (decreases) with the increase (decrease) of the flow process parameter of flood season.
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