Abstract
The dynamic environment of lingdingyang estuary is very complex due to the confluence of runoff and tide as well as the different characteristics of each entrance. Meanwhile, human activities are intensive. Taking the large bridge project of the Pearl River Estuary--Shenzhen-Zhongshan Bridge Project as an example, this paper divides the waters of Lingdingyang estuary where the project is located into tidal channel area, shoal area and two west flood discharge areas based on the differences of hydrodynamic and environmental characteristics. Combined with the one and two-dimensional tidal current model of estuary and delta, the paper discusses the dynamic response of different dynamic characteristic areas to the engineering construction, and carries out the construction scheme optimization and hydrodynamic influence demonstration. The project impact analysis based on dynamic zoning proposed in this paper not only rationally evaluates the hydrodynamic environmental impact of large water-related projects of Lingdingyang, but also is of great significance to the balance of protection and development of Lingdingyang Estuary.
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