摘要
枯水年和平水年调水均加重了长江口南支、南港上段的盐水入侵强度 ,丰水年调水 60 0m3 s、10 0 0m3 s、15 0 0m3 s对长江口南支宝钢河段、南港高桥河段水域的盐水入侵强度无影响。特枯水文年即使只调水 60 0m3 s ,对长江河口南支、南港河段盐水入侵就造成严重影响。建议枯水年枯季调水最好不要超过 10 0 0m3 s;平水年调水最好不要超过 2 0 0 0m3 s。另外 ,不同特征水文年调水对长江南港高桥站的盐水入侵强度的影响程度比对南支宝钢河段盐水入侵强度的影响要小。
The intensity of saltwater intrusion in Yangtz river estuary was studied in this paper, which was brought up by the East Route Project of Transporting Water from Yangtze River to North China and the Pumping Works along the Yangtze River from Anhui to Jiangsu Province. The research results showed: In dry years and normal years, the extent of saltwater intrusion at South Branch and South Channel in Yangtze Estuary will become serious after the East Route Project and the Pumping Works;In rainy years, the water discharge was diminished from 600m3/s to 1500m3/s by the Projects will give no affect to the extent of the saltwater intrusion;While in especially dry years, the extent of the saltwater intrusion will be aggravated when the water discharge was decreased by 600m3/s;″Critical Water Discharge″ was calculated. In dry years, the ″Critical Water Discharge″ is 1000m3/s, and in rainy years, it is 2000m3/s;Salt Water Intrusion will have heavier impact on the Baogang Reservoir than on the Gaoqiao Station.
关键词
长江口
特征水文年
南水北调
盐水入侵强度
Yangtze river estuary
characteristic hydrological year
transporting water from Yangtze River to north china
the extent of saltwater intrusion
