江-湖-蓄滞洪区聚合调洪演算模型研究与应用  

Construction and application of river-lake-flood detention basin aggregationflood routing model

作　　者：陈瑜彬 张涛 童冰星 许银山 CHEN Yubin;ZHANG Tao;TONG Bingxing;XU Yinshan(Bureau of Hydrology,Changjiang Water Resources Commission,Wuhan 430010,China;Intelligent Changjiang Innovation Team of Changjiang Water Resources Commission,Wuhan 430010,China;Center of Technology Innovation for Intelligent Water Simulation,Forecasting and Operation of the River Basin,Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]长江水利委员会水文局,湖北武汉430010 [2]长江水利委员会智慧长江创新团队,湖北武汉430010 [3]长江水利委员会流域水模拟与预报调度智能技术创新中心,湖北武汉430010

出　　处：《人民长江》2024年第9期60-65,70,共7页Yangtze River

基　　金：江西省水利厅科技项目(202224ZDKT20);长江水利委员会水文局科技创新基金项目(SWJ-CJX23Z13);重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0132);水利部重大科技项目(SKR-2022011)。

摘　　要：为提高纳入蓄滞洪区的河道洪水模拟精度和效率,更大限度发挥蓄滞洪区的综合利用效益,建立了以大湖模型为基础的江-湖-蓄滞洪区聚合调洪演算模型,提出考虑蓄滞洪区运用影响的洪水模拟方案。以鄱阳湖区2020年实际来水作为边界条件,以2020年7月1日为起始时刻开展单退圩堤启用与否工况下的洪水实时调度模拟。模拟结果表明:构建的江-湖-蓄滞洪区聚合调洪演算模型可以合理快速地模拟蓄滞洪区启用时的鄱阳湖水位变化过程。鄱阳湖区单退圩堤启用分洪效果显著,能够降低湖区水位0.2~0.3 m,模拟结果与实际过程相近,如不分洪,湖口站最高水位将超过保证水位。研究成果可为蓄滞洪区调度和水旱灾害防御提供更精确的水文信息支持。To improve the accuracy and efficiency of flood simulation within flood detention basin and maximize its benefits,a river-lake-flood detention basin aggregation flood routing model was proposed based on the Great Lake Model.On this basis,a flood simulation scheme that considers the application of flood detention basins has been established.Taking the actual water inflow in the Poyang Lake area in 2020 as the boundary condition,and taking 1st July 2020 as starting time point,the real-time scheduling simulation of the flood was carried out under the influence of whether or not applying the farming polders.The simulation results show that the proposed model can reasonably and quickly simulate the water level change process over Poyang Lake when the flood detention basin has been applied.After the farming polders are applied,the effect of flood falling is remarkable,with the highest water level in the lake area being reduced by 0.2~0.3 m.Without flood diversion,the highest water level at Hukou Station would exceed the guaranteed water level.The study can provide more accurate hydrological information to support flood detention area scheduling and drought-flood disaster defense.

关 键 词：蓄滞洪区 单退圩堤 调洪演算 大湖演算模型 鄱阳湖 

分 类 号：TV873[水利工程—水利水电工程]