港珠澳大桥附近海域海床演变分析

文章分析了河口湾径流的水沙条件、潮流、潮位、盐度的基本特征及相互关系,河口的沉积环境与沉积速率以及滩槽演变的特点和趋势。拟建桥区海床历史演变与近期演变的分析研究表明:拟建桥区海床以淤积为主,但淤积量不大;桥区水域内涨落潮以往复流为主,且与所在的航槽走向一致,反映了地形与水流的相互作用关系。

Seabed evolution analysis of area near the Hong Kong-Zhuhai-Macao Bridge

The factors such as water and sediment condition of estuary runoff,tidal current,tidal level, salinity characters and the correlation between each other,feature of the deposition environment,settling rate and the tendency of the seabed evolution were analyzed in this paper.Based on the analysis of historical and recent evolution of the seabed area near the Hong Kong-Zhuhai-Macao Bridge,all the studies indicate that the main evolution trend of the seabed of bridge building area is silting-up,but the deposition amount is small.The tide in the bridge area is mainly reversing tidal current and its direction is the same with navigation channel,which reflects the interaction between landscape and current.