南水北调工程对衡水湖水环境的影响预测  

Impact Prediction of South-to-North Water Diversion Project on the Water Environment of Hengshui Lake Wetland

作　　者：江春波[1] 张明武[1] 杨晓蕾[1] 

机构地区：[1]水沙科学与水利水电工程国家重点实验室清华大学,北京100084

出　　处：《水力发电》2010年第8期19-21,67,共4页Water Power

基　　金：国家基础研究973计划资助项目(2006CB403304);国家自然科学基金资助项目(90610028);水沙科学及水利水电工程国家重点实验室课题资助项目(2008-ZY-5)

摘　　要：利用2003年衡水湖水体溶解氧和氨氮浓度的实测数据对环境流体动力学模型EFDC的计算结果进行的验证结果表明,EFDC模型可以应用于衡水湖的水环境模拟。该模型预测南水北调工程对衡水湖水环境影响的结果表明,水温受水深、大气温度和调水温度的影响,而溶解氧浓度主要受水温影响;调水期不同的调水方式对湖内的污染物浓度变化有一定影响,调水结束后扩散作用使湖内的污染物浓度趋于一致。为了能够容纳南水北调来水,增容势在必行。建议将衡水湖挖深,这样既可扩充湖的容量,也可将污染物含量高的底泥挖除,使水质不易变坏。By comparing the simulating results obtained by Environmental Fluid Dynamics Code(EFDC) model and the monitored DO and Ammonia Nitrogen data of the year 2003,the EFDC model can be used to simulate the impact of South-to-North Water Diversion on the water environmental qualities of Hengshui Lake.The water temperature in Hengshui Lake is influenced by the water depth,the atmosphere temperature and the diverted water temperature,the concentration of DO is mainly affected by water temperature.Different water diversion schemes could influence the pollutant concentration in the diversion period,and after the end of water diversion the pollutant concentration in the lake would become consistent because of the diffusion.The simulation also shows that the lake should be expanded in order to accommodate diverted flow.It is suggested excavating the lake deeper to expand the capacity and remove the high-polluted bottom mud for keeping the water quality in a good grade.

关 键 词：南水北调工程 衡水湖 水环境影响 影响预测 Water Environment 污染物浓度 调水 流体动力学模型 水温 计算结果 污染物含量 温度的影响 水体溶解氧 水环境模拟 溶解氧浓度 势在必行 浓度变化 模型预测 扩散作用 大气温度 

分 类 号：TV73[水利工程—水利水电工程] TM612[电气工程—电力系统及自动化]