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千岛湖配水工程对钱塘江河口盐水入侵影响
引用本文:张舒羽,周维,史英标.千岛湖配水工程对钱塘江河口盐水入侵影响[J].水科学进展,2016,27(6):876-882.
作者姓名:张舒羽  周维  史英标
作者单位:1.浙江同济科技职业学院, 浙江 杭州 310000;
基金项目:国家自然科学基金资助项目(51379190)
摘    要:杭州市第二水源千岛湖配水工程(简称配水工程)的实施将引起富春江水库下泄流量及过程改变,从而对钱塘江河口盐水入侵产生影响。建立考虑涌潮作用的二维盐度数值模型,在验证钱塘江河口潮位和盐度的基础上,预测配水工程实施对河口盐水入侵距离和重要取水口含氯度超标时间的影响。研究表明:配水工程实施后,上游富春江水库若按现状调度方案,对枯水年影响大,咸水上溯距离增加3.7 km,沿岸取水口的可取水时间缩短0.2~3.6 d,丰、平水年盐水入侵和引水前相当;通过水库的优化调度,可基本消除枯水年引水造成的盐水入侵影响。为减少配水工程实施的盐水入侵影响,采用水库的优化调度模式是必要的。

关 键 词:河口    盐水入侵    超标时间    千岛湖    钱塘江    配水工程
收稿时间:2015-11-26

Effects of Qiandao Lake water diversion project on Qiantang River estuary saltwater intrusion
ZHANG Shuyu,ZHOU Wei,SHI Yingbiao.Effects of Qiandao Lake water diversion project on Qiantang River estuary saltwater intrusion[J].Advances in Water Science,2016,27(6):876-882.
Authors:ZHANG Shuyu  ZHOU Wei  SHI Yingbiao
Affiliation:1.Zhejiang Tongji Vocational College of Science and Technology, Hangzhou 310000, China;2.Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China
Abstract:Qiandao Lake water diversion project will change the runoff process of the Fuchun reservoir and the salinity of Qiantang River estuary. A two-dimensional numerical salinity model which including tidal bore's action is established. Based on tide and salinity testing, the distance of saltwater intrusion and the exceeding period of important water inlets caused by the project are calculated. Results showed that, it will be significantly effected in the low flow year by the current scheduling scheme, the distance of saltwater intrusion is increased 3 700 meters and time available for water inlets time along the river is shorten 0.2~3.6 days, but it is little effected in normal and high flow year. In order to reduce the influence of the salt water intrusion which happened due to the project in low flow year, a reservoir optimal operation is necessary.
Keywords:estuary  saltwater intrusion  exceeding period  Qiandao Lake  Qiantang River  water diversion project  
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