| 河道冲淤变化对分流分沙比的影响 |
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| 引用本文： | 余新明,谈广鸣.河道冲淤变化对分流分沙比的影响[J].武汉大学学报(工学版),2005,38(1):44-48. |
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| 作者姓名： | 余新明 谈广鸣 |
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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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| 基金项目： | 国家自然科学基金重大项目资助(50099620). |
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| 摘 要： | 主要针对干流河床冲淤变化对支流分流分沙的影响进行初步研究,充分考虑了分流口口门附近的环流结构和含沙量沿垂线分布的特性,建立了干流河床冲淤变化后支流分流分沙比的计算公式,用荆江裁弯后分流分沙的变化对公式进行了验证,并根据公式预测三峡建坝后对荆江三口分流分沙的影响.
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| 关 键 词： | 分汊河道 河床冲淤 分流分沙 水位 |
| 文章编号： | 1671-8844(2005)01-044-05 |
| 修稿时间： | 2003年5月27日 |
Research on diversion model of discharge and sediment with the erosion and deposition of river |
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| YU Xin-ming,TAN Guan-ming.Research on diversion model of discharge and sediment with the erosion and deposition of river[J].Engineering Journal of Wuhan University,2005,38(1):44-48. |
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| Authors: | YU Xin-ming TAN Guan-ming |
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| Abstract: | The influence of sediment deposition and erosion in mainstream on the diversion ration of flow and sediment is studied. Sufficiently considering the characteristics of circulation flow and vertical distribution of sediment concentration, a quantificational equation was developed, which can reveal the relation between erosion& depositon in mainstream and the variation of diversion ratio of flow and sediment. Using the data of flow & sediment diversion ratios of the three diversions in the Yangtze River after cutoff, the equation was calibrated. Based on the equation, the diversions ratio of flow and sediment of the three diversions in the Yangtze River is estimated after the construction of TGP. |
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| Keywords: | distributaries channel erosion and deposition in river diversion of flow and sediment water level |
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