Research on multi-objective driven dispatching water level of Lake Taihu

太湖是流域洪水集散地、水资源调配中心，也是长三角水生态环境的晴雨表，其水位高低影响防洪、供水、水生态、水环境等系统功能，使得太湖面临统筹调度问题日益凸显。本文以太湖为主要研究对象，基于多年实测数据，采用数理统计、河网水动力模型计算，分析流域降雨、进出湖水量和水生态环境演变规律及其与太湖水位的互馈关系，综合考虑不同调度期流域防洪、供水、水生态、水环境目标及其承受风险的时空差异性，优化太湖调度水位，并在此基础上提出太湖调度功能区划图。结果表明，在设计洪水和供水条件下，通过调度水位调整，统筹调控流域水工程，前期预降太湖水位，后期适抬太湖水位，实现太湖多目标调度，可有效保障流域防洪、供水和航运安全，改善河湖生态环境，共绘美丽太湖。;Lake Taihu is a center of flood distribution, water resources regulation, storage, and barometer the ecological environment. Its level affects system functions control, supply, ecology, environment, shipping etc., which makes overall dispatching problem Lake increasingly prominent. In this paper, taken as main research object. Based on monitoring data, mathematical statistics hydrodynamic model calculation were used to analyze changes rainfall, discharge lake water, environment their feedback relationship with Taihu. Considering objectives its spatial temporal differences in risk tolerance during different dispatch intervals, was optimized. On basis, function zoning map proposed. The results showed that, under conditions design could be pre-reduced early stage appropriately raised late through adjustment regulation river basin projects. It effectively guarantee safety supply basin, improve rivers lakes. would continuously improved practice exploration, so lay stable foundation for construction beautiful