沿海河道型水库水质可达性研究  

An Analysis of Water Quality for a Channel Reservoir in the Eastern Coastal Region

作　　者：纪风强[1] 王华[1,2] 王晓[1] 李晓玲[1] 

机构地区：[1]河海大学环境学院,南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京210098

出　　处：《中国农村水利水电》2014年第3期12-15,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金资助(51179053)

摘　　要：根据新沭河太平庄闸至三洋港挡潮闸河段污染源分布特点,对区域内污染物入河量采用分布式污染负荷模型进行测算;建立两闸区间河道型水库二维非稳态FVS格式水流水质模型,基于水量、水质同步实测数据对模型进行率定验证。运用所建模型对研究区域水量水质过程进行数值模拟,定量分析了水库来水为功能区水质及污染源汇入条件下的水质浓度场变化过程。结果表明:相同蓄水时间内,污染源汇入不利方案下水质浓度场范围较上游来水为功能区水质方案下的范围有所增加;蓄水45d时,不利方案下污染带已达到范河闸取水口处,但水质浓度仍未超出农业灌溉用水标准,表明该河道型水库水质可在较长时间内满足农业灌溉要求。Based on field research and data analysis, considering the distribution of pollution sources in the region of Taipingzhuang gate-Sanyanggang tide gate on the Xinshuhe River, a distributed waste load model（DWLM） is established to calculate the pollutant quantity inlets into river. A 2-D unsteady hydrodynamic water quality model in the FVS form for the channel reservior between 2 gates was established, and the simultaneous hydrodynamic and water quality data were used to calibrate and verify the model. Using the numerical model, when the inflow of the upstream boundaries was 1]I standard of the water function zone and the most adverse conditions（pollutants entering river）, the hydrodynamic and water quality processes of the studied area were simulated, and the chan- ging process of the water quality concentration fields with the times of storage were quantitatively estimated. The results showed that： when the inflow of the upstream boundary met the level m standard of the water function zone, the contamination concentra- tion field was smaller than that under the adverse condition, and when water storage time was the 45th day, the Fanhe Gate intake for agricultural irrigation was covered by contamination field under the adverse condition, even so the water quality concentration reached the standard for irrigation.

关 键 词：河道型水库 水质 农业灌溉 二维非稳态水流水质模型 

分 类 号：X824[环境科学与工程—环境工程]