| 典型引黄灌区泥沙运动及泥沙淤积成因 |
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| 引用本文： | 王延贵,李希霞.典型引黄灌区泥沙运动及泥沙淤积成因[J].水利学报,1997(7):13-18. |
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| 作者姓名： | 王延贵 李希霞 |
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| 作者单位： | 中国水利水电科学研究院 |
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| 基金项目： | “八五”国家重点科技攻关项目 |
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| 摘 要： | 目前，黄河下游引黄灌区的主要问题是渠道泥沙淤积，本文在典型灌区（簸簧李和位山）大量实测水沙资料的基础上，分析了引黄灌区泥沙的起动、含沙量分布和挟沙能力；渠道的糙率、比降、断面形状、来沙组成和引水流量是影响引黄渠道兵沙能力的主要因素；最后灌区的实际情况，分析了引黄灌区泥沙淤积的具体成因。本文对如何减少引黄灌区渠道泥沙淤积和分散处理泥沙具有一定的参考价值。
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| 关 键 词： | 起动流速 含沙量分布 泥沙淤泥 泥沙运动 |
A study on sediment movement and causes of sediment deposition in the typical irrigation system of the lower Yellow River |
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| Wang Yangui\ Li Xixia\ Wang Bingwei.A study on sediment movement and causes of sediment deposition in the typical irrigation system of the lower Yellow River[J].Journal of Hydraulic Engineering,1997(7):13-18. |
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| Authors: | Wang Yangui\ Li Xixia\ Wang Bingwei |
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| Affiliation: | China Institute of Water Resources and Hydropower Research |
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| Abstract: | Based on the field data of irrigation system, the incipient velocity of sediment with different sizes, the vertical concentration distribution and the sediment transport capacity are analyzed in this paper. It is revealed that the roughness factor, slope of the canal bed, cross section of the canal and sediment sizes are the important factors which influence the sediment transport capacity of the canal. The main causes of sediment deposition in the irrigation system are given. |
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| Keywords: | incipient velocity concentration distribution sediment deposition |
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