| 平衡纵剖面数值试验及其对防洪的影响研究 |
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| 引用本文： | 邓金运,李义天.平衡纵剖面数值试验及其对防洪的影响研究[J].水动力学研究与进展(A辑),2002,17(3):304-310. |
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| 作者姓名： | 邓金运 李义天 |
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| 作者单位： | 武汉大学水沙科学教育部重点实验室,湖北武汉,430072 |
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| 基金项目： | 国家自然基金委和水利部联合资助重大项目 (5 9890 2 0 0 ) |
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| 摘 要： | 本文采用一维非恒定流非均匀沙的水沙数学模型，以长江中游螺山汉口河段为背景，进行了根化数值模拟试验，分析了该概化河段平衡纵剖面的变化规律及其与上游来水来沙条件的关系，并和相应的理论公式进行了比较。在此基础上，对水沙条件发生较在变化时的平衡纵比降以及带来的对长江中下游防洪的影响进行了分析。
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| 关 键 词： | 平衡纵剖面 来水来沙 水沙数学模型 防洪 概化数值模拟 |
| 文章编号： | 1000-4874(2002)03-0304-07 |
Numerical modeling of longitudinal equilibrium profile in river channel and its effects on flood control |
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| DENG Jin yun,LI Yi tian.Numerical modeling of longitudinal equilibrium profile in river channel and its effects on flood control[J].Journal of Hydrodynamics,2002,17(3):304-310. |
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| Authors: | DENG Jin yun LI Yi tian |
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| Abstract: | Based on the morphology of the Luosan Hankou reach at the middle Yangtze River, a numerical model of the one dimensional unsteady flow and sediment was adopted to study the generalized longitudinal equilibrium profile of river channels. Meanwhile, the changing law of the longitudinal equilibrium profile, and the relation with the condition of the inflow water and sediment from the upper reach were analyzed, and on the other hand, the numerical simulation results were compared with the corresponding theoretical results. Finally, the equilibrium longitudinal slope variations and effect on flood control were analyzed after the variation of sediment transport process. |
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| Keywords: | longitudinal equilibrium profile inflow water and sediment slope flood level |
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