石浦港是一个具有五个口门的狭长港湾.作为一个港口,现有航道的通航能力明显不足,亟需升级现有航道至五万吨级航道以适应发展需要.另外,近年来石浦港大部存在泥沙淤积明显加重的趋势.本文通过地貌特征分析、遥感分析、现场实测水文泥沙资料分析、数学模型试验和物理模型试验对石浦港的潮流泥沙特征、泥沙淤积原因、石浦港航道开挖及下湾门炸礁通航等水动力泥沙问题进行了研究.研究结果表明:(1)石浦港是三门湾的外海通道之一,潮流是维持水道水深的主要动力;(2)石浦港及附近海域属于淤泥质海岸,含沙量较大;(3)五个口门中,三门和下湾门潮量较大,是主要口门;(4)从水动力泥沙角度考虑,石浦港五万吨级航道开挖及下湾门炸礁通航是可行的;(5)下洋涂围垦造成了石浦港潮动力减弱,是石浦港西、中部泥沙淤积加重的主要原因.%Shipu Harbor is a long-narrow harbor with five entrances.As a harbor, its present navigational ca-pacity of navigation channel is insufficient, and it is desiderate to upgrade the existing navigation channel to 50000 DWT channel to meet the need of development.In addition,it is found that the sedimentation in most part of Shipu Harbor tends to aggravate in recent years.In this paper, by means of analyses of landform features, remote sensing and in-situ hydrology and sediment data,mathematical model and physical model, the hydrodynamic sediment envi-ronment problems were studied related to tidal current and sediment characteristics in Shipu Harbor, the sedimenta-tion causes, navigation channel excavation and reef explosion for navigation in Xiawanmen entrances, etc.The study results show that, (1) Shipu Harbor is one of the out-to-sea passages of Sanmen Bay, and the tidal current is the main hydrodynamic force to maintain its water depth.(2) Shipu Harbor and nearby is of muddy coast, and the sediment concentration is higher.(3)Among the five entrances of Shipu Harbor, Sanmen and Xiawanmen are the main entrances with relatively greater tidal capacity.(4) It is feasible to excavate 50000 DWT navigation channel in Shipu Harbor and to make explosion reef for navigation in Xiawanmen entrances as far as hydrodynamic sediment is concerned.(5) Xiayangtu reclamation weakened the tidal force in Shipu Waterway, and is the main cause to ag-gravate the sedimentation in the west part and middle part of Shipu Harbor.
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