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首页> 外文期刊>MATEC Web of Conferences >Water and sediment graded management to alleviate the “secondary suspended river” in the lower reaches of the Yellow River
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Water and sediment graded management to alleviate the “secondary suspended river” in the lower reaches of the Yellow River

机译：水和沉积物评分管理，以减轻黄河下游的“二级悬浮河”

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The “secondary suspended river” poses a huge threat to the safety of embankment in the lower reaches of the Yellow River. The formation of the “secondary suspended river” is mainly attributed to the “less water and more sediment, inconsistent water-sediment relationship” of the Yellow River. Through the analysis of the relationship between the evolution of the lower reaches of the Yellow River and the loss caused by disasters and flood and magnitude of sediment concentration, this paper thinks that the Yellow River must pay attention to the graded regulation of water and sediment. For small and medium-sized flood with small sediment concentration, according to the flood magnitude and the reservoir water volume in the upper and middle reaches, Impoundment and filling water to build the peak time at the right time is necessary and the flood processes which are less than 2600 m3/s should be avoided in the scheduling process. Based on the shape of river channel of high flow flood in floodplain and average flow flood in floodplain, and the difference between the sediment transport efficiency of flood and the difference between the loss to the lower floodplain area, the average flow flood in floodplain which is between 6000 m3/s should be avoided in the scheduling process as far as possible. In order to relieve the development trend of the “secondary suspended river”, the regulation of “brushing groove of silt beach” should be insisted on for large flood. But the high sediment concentration flood should be avoided because of its serious destructive effect on the lower reach. At the same time, it also calls for strengthening the research and popularization of reservoir sediment treatment and sediment resource utilization technology.
机译：“二级悬挂河”对黄河下游的堤防安全构成了巨大威胁。 “二级悬浮河”的形成主要归因于黄河的“较少的水和更多沉积物，水沉积关系不一致”。通过分析黄河下游的进化与灾害造成的损失与沉积物浓度造成的关系，本文认为黄河必须注意水和沉积物的分级调节。对于小沉积物浓度小的中小型洪水，根据洪水幅度和储层在上游和中间达到，蓄水和灌装水来构建正确的时间的高峰时间是必要的，洪水过程应在调度过程中避免少于2600 M3 / s。基于洪泛区高流量洪水河流渠道的形状，洪水沉积物运输效率与下洪泛区损失的差异，洪泛区的平均流洪水在调度过程中应尽可能避免6000 M3 / s之间。为了减轻“二级悬浮河”的发展趋势，应坚持大型洪水的“淤泥海滩刷槽”的调节。但由于其对较低距离的严重破坏性影响，应避免高沉积物浓度洪水。与此同时，它还要求加强水库沉积物处理和沉积物资源利用技术的研究和推广。

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