河口导堤工程对入海河流纳潮的影响及敏感性分析

2-D hydrodynamic model was used to analyze the impact of regulation schemes on tidal prism at the estuary of Guan River, and the sensitivity of jetty elevation was also studied. The result shows that the measure of dredging will increase the tidal prism, so does that of eastern jetty with dredging. However, the tidal prism may decrease for the measure of double jetties, depending on the elevation. For the western jetty, the elevation is sensitive to the tidal prism of Guan River at any elevation, but for the eastern jetty only when it is close to low tide or flood strength level. It can be concluded that the tidal prism of Guan River may remain unchanged when the elevation of double guide jetties will be determined correctly.