| 水库下游近坝段卵石推移质输沙率的研究 |
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| 引用本文： | 何娟,陈立,鲍倩,孙亮.水库下游近坝段卵石推移质输沙率的研究[J].泥沙研究,2008(4). |
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| 作者姓名： | 何娟 陈立 鲍倩 孙亮 |
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| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
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| 摘 要： | 水库下游近坝河段推移质输沙问题十分复杂,涉及到多方面因素的影响.本文分析了水库下游近坝河段卵石推移质的产输规律,引入临界起动粒径的概念,建立适用于近坝河段的起动流速公式.选择适用于近坝河段的成勘院经验公式并对参数加以率定,结合近坝河段起动流速公式建立近坝河段的卵石推移质输沙率公式,经检验结果基本吻合.
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| 关 键 词： | 近坝河段 卵石推移质 起动流速 输沙率 |
Study on gravel bed-load transport rate in downstream reach below the dam |
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| HE Juan,CHEN Li,BAO Qian,SUN Liang.Study on gravel bed-load transport rate in downstream reach below the dam[J].Journal of Sediment Research,2008(4). |
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| Authors: | HE Juan CHEN Li BAO Qian SUN Liang |
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| Abstract: | The problems of gravel bed-load transport in downstrean reach below the dam are very complicated.In this paper,the characteristics of the gravel bed-load transport is analyzed.The incipient velocity formula is founded by introducing the concept of critical incipient grain.By comparing different formulas for gravel bed-load transport rate,the empirical formula by Chengdu is selected and its parameters are calibrated with the field data.Combined with the incipient velocity formula,a formula for gravel bed-load transport rate in downstream reach below the dam is founded and verified to be reasonable. |
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| Keywords: | gravel bed-load sediment transport rate sediment incipient velocity near-dam reach |
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