| 城镇化背景下太湖流域湖西区汛期入湖水量计算 |
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| 引用本文： | 吴娟,林荷娟,季海萍,吴志勇,金松.城镇化背景下太湖流域湖西区汛期入湖水量计算[J].水科学进展,2021,32(4):577-586. |
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| 作者姓名： | 吴娟 林荷娟 季海萍 吴志勇 金松 |
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| 作者单位： | 1.太湖流域管理局水文局信息中心, 上海 200434 |
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| 基金项目： | 国家重点研发计划资助项目2018YFC0407900 |
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| 摘 要： | 为研究太湖流域湖西区净入湖水量增加的成因机制，对治太工程建成前（1990—2001年）、江南运河航道升级与梅梁湖泵站及城市防洪工程建成后（2013—2018年）2个时段，采用水文水动力学模型分析代表站水位、重要控制线水量的变化，并基于知识图谱分析对洪水出路的影响。结果表明:导致湖西区净入湖水量增加的降水量增加、湖西区和武澄锡虞区沿长江净引水量增加、梅梁湖泵站与无锡城市大包围工程共同运行3项因子可使太湖年平均水位抬升0.05 m，河网代表站年平均水位抬升0.02~0.16 m，梅梁湖泵站和无锡城市大包围共同运行可显著抬升无锡（大）水位；3项因子的贡献率各占1/3，但因子之间既有协同作用，也有抑制作用，共同导致了流域与区域洪涝矛盾更加突出。
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| 关 键 词： | 城镇化 入湖水量 水文水动力学模型 知识图谱 太湖流域湖西区 |
| 收稿时间： | 2020-09-27 |
Calculation of water quantity entering the Taihu Lake from the Huxi sub-basin during flood season under the background of urbanization |
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| Institution: | 1.Bureau of Hydrology Information Center of Taihu Basin Authority, Shanghai 200434, China2.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China |
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| Abstract: | The mechanism of water quantity increase entering the Taihu Lake from the Huxi sub-basin was explored. For the purpose, the coupled hydrology and hydrodynamic models of the Taihu Lake basin were established to simulate water stage variation of representative stations, as well as water quantity of important control lines. A knowledge graph was applied to study the flood drainage path. The simulation time series were divided into two periods; (i) 1990-2000:before integrated water resources management projects were in operation, and (ii) 2013-2018:after the Jiangnan canal upgrading, Meilianghu pump station, and city flood control projects were in operation. Three factors were identified to be responsible for the water quantity increase in the Taihu Lake from the Huxi sub-basin: increased precipitation, increase in the amount of water diverted from the Huxi and Wuchengxiyu sub-basins along the Yangtze River, and the Meiliang pump station and the Wuxi City flood control projects in operation. The results demonstrated that the annual average Taihu water stage increased by 0.05 m, and representative water stage of the river network increased by 0.02-0.16 m. The Wuxi City water stage increased significantly after the Meiliang pump station and Wuxi City flood control projects came into operation. Individually, the contribution of the three factors was almost equal, while their interactive effects were both synergistic and inhibitory, resulting in more intense flood contradiction for the Taihu Lake basin and its sub-basins. |
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