深中通道工程对伶仃洋水流环境的影响

Impacts of the Shenzhen-Zhongshan channel project on flow environment of Lingdingyang estuary

伶仃洋是珠江河口东四口门入汇的喇叭状河口湾,径、潮交汇,动力复杂。利用伶仃洋河口潮流数学模型从潮位、流速、流态、动力格局方面探讨了深中通道工程建设对伶仃洋河口潮流动力环境的影响。研究结果表明:深中通道工程建设对伶仃洋潮流动力环境影响的范围和强度均以西人工岛附近为最大,锚碇水域次之,东人工岛及桥区附近相对较小;近岛、桥局部区域潮位及流场的变化比较明显,对伶仃洋滩槽总体格局影响不大。

Lingdingyang is the horn shaped estuary in which the four east gates of Pearl River injected, withrunoff-tide confluence and complex dynamic. From the aspects of tide level velocity, flow and power pattern, theimpacts of the Shenzhen-Zhongshan channel project on flow environment of Lingdingyang estuary are studied by mathematical modeling.Results show that the impacts on the hydrodynamic environment of the west artificial islandare the greatest, while the impacts of the anchorage and main piers take the second place, and there will be no greatchanges near the east artificial island and non-navigable bridge pier.Anymore , the variation of tide level and flowfield in the vicinity of the island and the bridge is obvious.Overall, the Shenzhen-Zhongshan channel project haslittle impact on the overall pattern of the Lingdingyang estuary.