| 西湖总磷模型构建及内循环引水效果分析 |
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| 引用本文： | 滑磊,尤爱菊,韩曾萃,腾辉,朱军政.西湖总磷模型构建及内循环引水效果分析[J].水文,2015,35(4):27-32. |
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| 作者姓名： | 滑磊 尤爱菊 韩曾萃 腾辉 朱军政 |
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| 作者单位： | 浙江省水利河口研究院 |
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| 基金项目： | 水体污染控制与治理科技重大专项(2012ZX07101-007-005)； |
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| 摘 要： | 调水是目前快速改善湖泊水质的有效方法之一,但是对于调水所能达到的最佳效果研究很少。以杭州西湖为例,利用环境流体动力学模型EFDC构建了西湖TP模型,对通过苏堤各桥孔的流量、外西湖分层流场和水质浓度进行了验证,分析了在现有外围调水情况下增加西湖内循环引水后西湖TP的时空变化。模拟结果表明,增加内循环引水,直接将低浓度区的水引至高浓度区,能够明显降低高浓度区的水质;低浓度区由于引水量的减小,区域内水质浓度会有一定的上升;全湖平均水质浓度基本不会发生改变。在没有增加外部引水的情况下,内循环引水可以使湖泊水体掺混更加均匀,对于防止高浓度区富营养化有很好的效果。增加内循环引水对西湖改善高浓度区水质有一定的指导意义,同时也可为相似湖泊增加内循环引水措施提供借鉴。
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| 关 键 词： | 总磷模型 内循环引水 西湖 EFDC模型 |
| 收稿时间： | 2014/6/9 0:00:00 |
Total Phosphorus Model Construction and Analysis of Internal Circulation Water Transfer in West Lake |
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| HUA Lei,YOU Aiju,HAN Zengcui,TENG Hui,ZHU Junzheng.Total Phosphorus Model Construction and Analysis of Internal Circulation Water Transfer in West Lake[J].Hydrology,2015,35(4):27-32. |
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| Authors: | HUA Lei YOU Aiju HAN Zengcui TENG Hui ZHU Junzheng |
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| Institution: | Zhejiang Institute of Hydraulics & Estuary, Hangzhou 301120, China) |
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| Abstract: | Water transfer is an effective approach to improve water quality in the lake. However, there is almost no research focusing on optimum efficiency of water transfer. As a case study of West Lake in Hangzhou City, total phosphorus (TP) model with environmental fluid dynamic code (EFDC) was built. And the water quantity across Sudi, velocities in different layers and water quality were verified. The spatial and temporal distributions of TP concentration with and without internal circulation water transfer were analyzed. The results show that, after increase the internal circulation water transfer, the water in low concentration area was transferred to the high concentration area, which can decrease the TP concentration in high concentration area. Because of the decrease of water quantity in low concentration area, TP concentration was increased in low concentration area. However, the average concentration in the whole lake was remained fairly static. In the condition of same external diversion, the concentration of water quality is more evenly distributed after increase internal circulation water transfer, which has an advantage to avoid the eutrophication in high concentration area. Increase of internal circulation water transfer has a guiding significance for improving the water quality in West Lake, and provides a reference for the similar lakes. |
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| Keywords: | total phosphorus model internal circulation water transfer West Lake EFDC model |
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