| 摘要: |
| 为探究淮河入海水道二期工程对洪泽湖的泄洪能力以及周边滞洪区的影响，在对研究区河网概化及地形处理的基础上，建立了研究区河网一维、洪泽湖湖区与周边滞洪区二维耦合的水动力数值模型，并采用1991，2003，2006，2007四年实测历史洪水资料对模型进行率定及验证。基于现状工况、规划工况以及不同洪水量级，设计了5个对比方案对研究区进行洪水演进数值模拟，对不同洪水量级进行横向对比，对不同工况进行纵向对比，并对不同方案进行淹没面积分析和洪水影响分析。结果表明，入海水道二期工程的启用可以有效降低洪泽湖水位，提高洪泽湖的防洪标准和周边滞洪区的启用标准，减少同等洪水量级下的受影响人口数和区域GDP，为洪泽湖的防洪安全建设以及周边蓄滞洪区的稳定发展创造了条件。 |
| 关键词: 数值模拟 入海水道 洪泽湖 洪水风险 |
| DOI： |
| 分类号:TV87 |
| 基金项目:江苏省2014年度普通高校研究生科研创新计划项目（KYZZ_0145）；江苏省普通高校研究生科研创新计划项目（2015B31914）；江苏省水利科技项目（20165042812） |
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| Influence of sea-entering channel phase Ⅱ project on flood risk in Hongze Lake area |
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ZHOU Jie1,2, DONG Zengchuan3, ZHU Zhenye3
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1.College of Hydrology and Water Resources，Hohai University， Nanjing;2.Zhejiang Huadong Engineering Digital Technology Corporation Limited, Hangzhou;3.College of Hydrology and Water Resources， Hohai University， Nanjing
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| Abstract: |
| In order to study the influence of the sea-entering channel phase Ⅱ project on the discharge capacity of the Hongze Lake and its surrounding detention basin, a 1-D and 2-D coupled hydrodynamic numerical model is established, based on the generalization of river network and topographic treatment. Four years’ historical flood data of 1991, 2003, 2006 and 2007 are used for the calibration and verification of the coupled model. Based on the present working condition, planning condition and different flood magnitudes, five plans are designed for comparison and numerical simulation. The flooded area and the population and GDP affected by the flood are analyzed. The results show that the sea-entering channel phase Ⅱ project will decrease the water level of the Hongze Lake efficiently, and increase the flood control standard of the Hongze Lake and the activation standard of the surrounding detention basin. The sea-entering channel phase Ⅱ project will reduce the population and regional GDP influenced by the same flood magnitude, and it will provide opportunities for the flood control and safety construction in the Hongze Lake area and for the stable development of the surrounding detention basin. |
| Key words: numerical simulation sea-entering channel Hongze Lake flood risk |
