【摘要】 从潮流、潮通量与水交换3个方面探讨湾口围填海对海湾内海与江道的影响。结果表明,两个工况的影响区域大多在外湾,围填使得金鼓江江道宽度缩窄、江内流速减小,潮通量减幅达17%,半交换周期增大达1.21 d;老人沙圈围虽增大了东水道的潮量,但金鼓江缩窄导致分水减小,圈围对金鼓江水动力环境影响较小;湾口围填虽小幅度占用中水道,但对内湾的水动力影响很小,今后的围填规划可以从中水道及其两侧高滩入手。更多还原

【Abstract】 This paper discusses the impacts of bay mouth reclamation on the inland sea and channel from three aspects: tide,tidal flux and water change.Results show that the two projects have little influence on the inner bay.For Jin’gu River,reclamation narrows the channel width,decreases the flow velocity and diminishes the tidal flux by 17%.The half-exchange period is extended by 1. 21 days.Lao-ren sand enclosure can strengthen the tidal volume of east channel but has little influence on Jin’gu River,because the narrowing of Jin’gu river may diminish the water diversion ratio.Though bay mouth reclamation partially takes up the middle channel,it has little influence on the inner bay,which means future reclamation planning can be considered the middle channel and beaches on its both sides.更多还原