东太湖应急水源地水库涵闸优化调度降低水华风险的研究案例

摘要

以东太湖吴江应急水源地为对象,应用MIKE 21水动力水质模型,以水体置换率为特征参数,以水质优化为目的,对水库涵闸调度规则进行研究.结合库区实际气象水文条件,在分析三种基础调度方案的基础上制定动态调度方案,并根据最不利条件对其进行检验分析.最终,综合考虑水质优化、控藻和运行成本,制定出一套全年调度方案,为吴江应急水源地水库的调度管理提供支持.%Optimal sluice gate operation of emergency water source of Wujiang in East Taihu Lake was studied in order to maintain and improve the reservoir water quality with a coupled hydrodynamic and water quality model based on MIKE 21 software.Water exchange rate was applied as the characteristic parameter.According to the actual meteorological and hydrological conditions in the area,a dynamic operation scheme was formulated based on analyzing three basic operation schemes,which was further examined with unfavorable conditions.Finally,a year round optimal operation scheme was developed considering the water quality optimization,algae controlling and operation cost.The results will provide strong support for operational management of emergency water source.