摘要
海底管道敷设过程中产生的悬浮泥沙会对工程海域的水质和海洋生物造成影响。建立了2D悬浮泥沙输移模型,结合水动力模型,对舟山市临城至虾峙岛、六横岛输配水工程中海底管线敷设引起的悬浮泥沙的输移规律进行模拟研究,预测悬浮泥沙的影响程度和范围,为海洋环境影响评价提供依据。计算结果表明:1号工段管道敷设对海水水质影响最大,2号工段管道敷设过程对海水水质影响最小,在5号工段六横登陆点附近施工时对周边小范围水域的海水水质存在较大影响。
Suspended silt which is raised from the bottom deposit in laying a submarine pipeline may exert its impact on water quality and marine creatures in the sea area where the pipeline is being laid. A 2D hydrodynamic model which is able to simulate the sus pended silt transportation is set up for the relevant study when a submarine freshwater pipeline is being laid among Lincheng, the Xiazhi Island, and the Liuheng Island, in or der to predict the intensity and the extend of the impact exerted by the raised silt, and to provide scientific basis for marine environment assessment. As it is shown in the compu- ting results, （1） water quality in Segment 1 of the pipeline-laying area is impacted the most heavily relative to the other segments, （2） it is effected the least in Segment 2, and （3） it is relatively heavily effected in a small area surrounding to the pipeline landfall which is located in Segment 3.
出处
《海岸工程》
2011年第1期9-17,共9页
Coastal Engineering
基金
浙江省科技厅优先主题重点社会发展项目--双大型海湾港航开发浅水深用关键技术研究及应用(2009c13016)
关键词
海底输水管道
悬浮泥沙
数值模拟
输移
海洋环境影响
submarine pipeline
suspended silt
numerical simulation
transport
marine environmental impact
