围垦工程对沙枉河口污染物输运影响分析

发布时间：2018-05-21 18:48

本文选题：污染物输运 + 围垦工程　；参考：《水利水运工程学报》2017年02期

【摘要】：河口两侧实施围垦工程改变了河口形态和动力环境,对河口污染物输运也将产生一定影响。以连云港市赣榆县沙枉河口为例,采用平面二维扩散输运模型对河口两侧高滩围垦工程实施前后沙枉河口污染物输运的影响范围进行了数值计算,分析了河口两侧浅滩围垦工程对河口污染物输运范围的影响。分析结果表明,河口两侧浅滩实施围垦工程使得河口过流通道缩窄,具有排放口向深水迁移的效应,有利于河口受污水体向动力较强的深水区稀释;但围垦工程实施使得通道和前沿区域动力改变,当两侧围垦工程前沿水流减弱时,动力变化不利于污染物输运;相反,围垦工程促使前沿水流增加时,动力变化则有利于污染物输运。
[Abstract]:Reclamation projects on both sides of the estuary have changed the estuary shape and dynamic environment, and will also have a certain impact on the transport of pollutants in the estuary. Taking Shaqu Estuary in Ganyu County of Lianyungang City as an example, a two-dimensional plane diffusion transport model is used to numerically calculate the influence range of pollutant transport in both sides of the estuary before and after the implementation of the high beach reclamation project. The influence of the reclamation project on the transport range of pollutants in the estuary is analyzed. The results show that the reclamation project on both sides of the estuary makes the channel of estuary flow narrow, and has the effect of migration from the outlet to the deep water, which is beneficial to the dilution of the estuary in the deep water area where the sewage body is more dynamic. However, the implementation of reclamation project makes the dynamic change of channel and front area. When the front flow of both sides of reclamation project weakens, the dynamic change is not conducive to the transport of pollutants; on the contrary, when reclamation project promotes the increase of forward water flow, Dynamic change is beneficial to pollutant transport.
【作者单位】：连云港港30万吨级航道建设指挥部;连云港市赣榆县水利局;江苏省水利厅;南京水利科学研究院;
【基金】：国家重点研发计划项目(2016YFC0401505) 国家自然科学基金资助项目(51309157)
【分类号】：X52

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