| 长江中游嘉鱼-燕子窝河段演变机理及发展趋势研究 |
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| 引用本文： | 王业祥,李义天,朱玲玲.长江中游嘉鱼-燕子窝河段演变机理及发展趋势研究[J].泥沙研究,2012(1):1-6. |
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| 作者姓名： | 王业祥 李义天 朱玲玲 |
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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： | 国家重点基础研究发展计划(973) |
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| 摘 要： | 长江中下游分汊河段众多,且大多分汊河段口门附近存在碍航浅滩,三峡水库蓄水后,水沙条件变异造成下游河段滩槽形态的调整,部分分汊河段浅滩航道条件恶化.本文以嘉鱼—燕子窝河段为例,在总结河床演变特点的基础上,深入分析河床边界与水力输沙条件的相互作用,揭示河床演变的内在机理,在此基础上预测河床演变的趋势,并对已有航道整治工程提出优化建议.
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| 关 键 词： | 分汊河段 临界流量 趋势预测 航道整治 |
Analysis of evolution mechanism and tendency of Jiayu-Yanziwo section in middle Yangtze River |
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| WANG Ye-xiang
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LI Yi-tian
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ZHU Ling-ling.Analysis of evolution mechanism and tendency of Jiayu-Yanziwo section in middle Yangtze River[J].Journal of Sediment Research,2012(1):1-6. |
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| Authors: | WANG Ye-xiang LI Yi-tian ZHU Ling-ling |
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| Affiliation: | (State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China) |
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| Abstract: | Braided channels exist widely in the middle and lower reaches of the Yangtze River,a great part of these channels are in bad navigation conditions because of the shoals at the entrance of the branches.After the impoundment of the Three Gorges Project,the variations of runoff and sediment load induce the transformation of the downstream shoals,which worsen the navigation condition of some channels.Based on the existing summary of the characteristics of the Jiayu-Yanziwo section,the relationship between river boundary and hydraulic sediment conditions is analyzed,and the mechanism of fluvial processes is revealed.The river evolution tendency and the optimization of the waterway projects are then presented. |
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| Keywords: | braided river critical discharge trend prediction waterway regulation |
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