填海工程悬浮物对海域环境影响的数值模拟研究——以中国海监唐山维权执法基地建设工程为例

Numerical Simulation Study on Environmental Effects of Suspended Sediment in Reclamation Projects——Taking the Rights Base Project of Tangshan Maritime Safety Administration as an Example

耦合二维浅水水动力数值模型及物质输运数值模型,对京唐港区中国海监唐山维权执法基地填海工程周边海域的潮流场及工程建设过程中产生的悬浮物的输移、扩散趋势进行了数值模拟研究。潮流数值模拟结果与海域实测结果吻合良好,在此基础上对抛石围堰、吹填溢流两种施工方式产生的悬浮物浓度分布状态、超标面积进行了数值预测,分析了该工程对海域水质环境的影响。

A conservative substance transport-diffusion model is coupled with 2D tidal model, and the current field and transport of suspended sediment are simulated by aforementioned numercial model in the rights base project of Tangshan maritime safety administration. The results of simulation agreed well with the field observed data. The concentration distribution and the area of exceeding the standard of suspended sediment produced by riprap cofferdam and dredge fill overflow were simulated. The influence of the project on the water quality environment was analyzed.