| 三峡水库蓄水后观音滩汛期航道条件变化分析 |
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| 引用本文： | 胡江,兰艳萍,张艾文. 三峡水库蓄水后观音滩汛期航道条件变化分析[J]. 人民长江, 2012, 43(7): 77-80 |
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| 作者姓名： | 胡江 兰艳萍 张艾文 |
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| 作者单位： | 重庆交通大学 国家内河航道整治工程技术研究中心,重庆,400074 |
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| 基金项目： | 国家科技支撑计划项目"973"计划项目，重庆市自然科学基金项目 |
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| 摘 要： | 为了进一步提高三峡工程的航运效益，通过平面二维数学模型和实测资料分析了三峡水库运行后，库区观音滩洪水急流滩的汛期航道条件变化情况及船舶自航上滩的临界条件。结果表明，三峡成库后，观音滩河段汛期航道条件大幅改善，航道水深增加，断面垂线平均流速减小，且分布趋于均匀化，河宽增大。万吨级船队及3 000吨级单船自航上滩的临界流量显著提升。
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| 关 键 词： | 上滩临界流量 航道条件变化 观音滩洪水 三峡水库 |
Analysis on channel condition variation of Guanyintan rapids in flood season after impoundment of Three Gorges Reservoir |
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| HU Jiang , LAN Yanping , ZHANG Aiwen. Analysis on channel condition variation of Guanyintan rapids in flood season after impoundment of Three Gorges Reservoir[J]. Yangtze River, 2012, 43(7): 77-80 |
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| Authors: | HU Jiang LAN Yanping ZHANG Aiwen |
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| Affiliation: | (National Inland Waterway Regulation Engineering Research Center,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | In order to further increase the navigation benefit of TGP,based on results of two-dimensional horizontal numerical model and field data,the channel condition variation and critical discharge for ship ascending Guanyintan rapids during flood season are analyzed after impoundment of Three Gorges Reservoir.The results show that the channel condition of Guanyintan rapids in flood season is improved significantly after the impoundment.The water depth increases,the vertically-averaged flow velocity decreases and distributes more uniformly,the river width increases.The critical discharge for 10000 dwt fleet and 3000 dwt single-ship increases. |
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| Keywords: | critical discharge for ascending rapids channel condition variation Guanyintan rapids flood season Three Gorges Reservoir |
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