摘要
开展水利工程联合调度应急预案研究是降低水源地突发水污染风险的重要举措。为降低东太湖2-甲基异莰醇(2-MIB)浓度季节性突增对下游太浦河金泽水库供水安全的影响,采用平原河网水动力模型与数学回归分析耦合方法,基于2016年实况水情,开展了太浦河枢纽100~1000 m^(3)/s分级下泄流量情景模拟分析和水利工程调度策略研究。研究结果表明:800 m^(3)/s、400 m^(3)/s分别是影响水流到达时间、两岸支流汇入比例的关键流量节点。满足金泽取水断面2-MIB处理能力控制要求的东太湖来水2-MIB限值区间为525~1690 ng/L,并提出太浦河枢纽下泄流量与东太湖来水2-MIB浓度不同区间组合下的金泽水库与太浦河枢纽联合调度策略。研究成果可为提高上海市金泽水库取水安全保障提供技术支撑,并为平原河网地区供水调度提供参考。
Establishing a joint operation scheme for hydro junction projects is an important measure to lower the water pollution emergency risk of drinking water sources.In order to reduce the impact of the 2-MIB concentration seasonal boost in East Taihu Lake which may influence the water supply security of Jinze reservoir on Taipu River,by adopting a method coupling hydrodynamic model of the plain river network and mathematics regress analysis,and based on water situation in 2016,we carry out simulations on Taipu hydrojunction project discharging flow from 100 to 1000 m^(3)/s and optimize the jointed operation strategy.It was detected that 800 m^(3)/s and 400 m^(3)/s were two key points that influence the flow arriving time to Jinze section and inflow ratio from both sides into Taipu River,and the limit range of 2-MIB concentration in streamflow of East Taihu Lake based on Jinze reservoir treatment ability was 525~1690 ng/L.Considering other influencing factors,we proposed a joint operation strategy for Jinze Reservoir and Taipu Hydrojunction Project under different combinations of 2-MIB concentrations in East Taihu Lake streamflow and discharges from Taipu Hydrojunction.The analysis can provide technical support for improving the water supply safety guarantee of Jinze Reservoir and provide a feasible reference for water supply scheduling in plain river network areas.
作者
朱宜平
尚钊仪
李蓓
李敏
张旭坤
ZHU Yiping;SHANG Zhaoyi;LI Bei;LI Min;ZHANG Xukun(Shanghai Chengtou Raw Water Co.,Ltd.,Shanghai 200125,China;Water Development Research Center of Taihu Basin Authority,Shanghai 200434,China)
出处
《人民长江》
北大核心
2023年第11期202-207,213,共7页
Yangtze River
基金
上海城投水务(集团)有限公司科研项目(KY.YS.21.0004)。
