人工湖进口流量对水体更新能力影响的研究

Study on the Influence of Inlet Flow of Artificial Lakes on Water Renewal Capacity

建立巫家坝中央公园景观湖MIKE 21数值模型,以水体更新时间为指标,分析了生态补水工程的流量分配对湖泊水体更新能力的影响。分析结果表明,进口流量分配对研究区域水体更新时间的影响较大。整体来看,增加对湖泊流场影响更大的北边界入流量,能够增强研究区域的水体更新能力。该方法能够较好地反映水体对流扩散作用对其更新能力的影响,可作为生态补水工程设计优化的实用工具。

This paper establishes a MIKE 21 numerical model for the landscape lake of Wujiaba Central Park,and analyzes the impact of flow distribution in ecological water replenishment projects on the water body renewal capacity of the lake,using water body renewal time as an indicator.The results indicate that the distribution of inlet flow has a significant impact on the water renewal time in the study area.Overall,increasing the inflow of the northern boundary,which has a greater impact on the flow field of the lake,can enhance the water renewal capacity of the study area.This method can better reflect the impact of convective diffusion on the renewal ability of water bodies,and can be used as a practical tool for optimizing the design of ecological water replenishment projects.