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长期以来三门湾进行了大量围填海工程,其累积影响与单个工程影响的简单叠加有显著区别。本文立足区域规划,采用幕景分析法,基于Delft3D二维模型研究石浦港潮流流速、瞬时流量对三门湾围填海工程的阶段性累积响应,并在此基础上分析石浦港纳潮量的累积响应。结果显示,随着围填海面积的累加,石浦港大部分水域全潮平均流速降低,其变幅分布与距围填海工程远近未显示出明显的相关关系,主水道横断面瞬时流量峰值降低,涨、落急时刻流量不等现象削弱;石浦港平均纳潮量2004-2009年增加3.16%,2009-2020年增加0.23%,三门湾总纳潮量2004-2009年减少0.46%,2009-2020年减少5.72%,三门湾湾口流量分配优势减弱;围填海区位不同,石浦港纳潮量响应有一定差别。
For a long time, Sanmen Bay has carried out a large number of reclamation projects, with a significant difference between the cumulative effect and the simple superposition of individual project impacts. Based on the regional planning, this paper uses the two-dimensional model of Delft3D to study the staged cumulative response of tidal flow velocity and instantaneous flow rate to the Sanmen Bay reclamation project based on the regional planning, and based on the Delft3D two-dimensional model, and on the basis of this analysis, Cumulative response. The results show that with the increase of reclamation sea area, the mean tidal current of most of the waters in Shippuang River decreases, and its amplitude distribution has no obvious correlation with the distance from the reclamation project. The instantaneous peak flow of the cross section of the main channel decreases, The mean tidal volume in Shipu Harbor increased by 3.16% in 2004-2009, 0.23% in 2009-2020, and 0.36% in total in Sanmen Bay from 2004 to 2009, A decrease of 5.72% in 2020 and a decrease in the distribution of flow in the Sanmen Bay. The different reclaimed sea areas have some differences in the tidal volume response of Shipu Harbor.