摘要
东平湖作为南水北调东线工程梯级泵站提水的最后一级调蓄湖泊,其水质安全至关重要。借助于地表水建模系统软件SMS,根据东平湖的地形、植被覆盖和调水流向等进行网格划分,建立二维水流水质模型,模拟了20种工况下湖区的水质状况。结果表明:大汶河入湖流量和CODCr浓度越大,调水出湖口CODCr浓度越高,大汶河入湖口污染混合区范围就越大;当大汶河入湖流量小于5m3/s、CODCr浓度小于27mg/L时,调水出湖口CODCr可以达到Ⅲ类水质标准;当大汶河入湖流量小于10m3/s、CODCr浓度小于23mg/L时,调水出湖口CODCr可以达到Ⅲ类水质标准。
As the last impounded lake for cascade pumping station pumping in the East Route of the South-to-North Water Transfer Project,Dong-ping Lake’s water quality security is crucial. Based on the surface water modeling system software SMS,the paper set up two-dimensional flow-pol-lutant mathematical model in Dongping Lake according to Dongping Lake’s characteristics such as terrain,vegetation coverage and so on;then sim-ulated Dongping Lake’s water quality conditions under 20 simulated conditions. Analytical results indicate that the outflow concentration of CODCr and characteristic scale of the pollution mixed zone of CODCr exceeding type Ⅲ water quality standard become larger with the increase of the inflow discharge and the inflow concentration of CODCr of Dawen River;when the inflow discharge of Dawen River is less than 5 m3 / s and the inflow con-centration of CODCr is less than 27 mg/ L as well as when the inflow discharge of Dawen River is less than 10 m3 / s and the inflow concentration of CODCr is less than 23 mg/ L ,the water quality of outflow area will meet grade Ⅲ standard.
出处
《人民黄河》
CAS
北大核心
2014年第7期80-83,共4页
Yellow River
基金
山东省环境保护科技研究计划专项(2013-01)
关键词
流场模拟
水质模拟
南水北调东线
东平湖
water flow simulation
water quality simulation
East Route of the South-to-North Water Transfer Project
Dongping Lake
