龙口湾人工岛群分阶段建设对水沙环境影响的数值研究港口海岸及近海工程专业论文.docxVIP

优秀毕业论文 精品参考文献资料 龙口湾人工岛群分阶段建设对水沙环境影响的数值研究Numerical 龙口湾人工岛群分阶段建设对水沙环境影响的数值研究 Numerical Study on Water and Sediment Environment of Artificial Island Constructed in Stages in Longkou Bay Abstract Construction of large island is an important way to explore marine space resources and to expand development space of China’S coastal cities．Uureasonable engineering construction will lead to the reduction of natural coastline．the degradation of marine environment and other issues．So studying the impacts of offshore artificial island construction in stages on marine dynamic conditions and topography has important practical guiding significance for construction scheme optimization． This artical takes China’S largest offshore artificial island group consisted of Longkou artificial islands and Zhaoyuan artificial islands which is being built in Longkou Bay as research object，hydrodynamic and sediment mathematical model and water exchange mathematical model in LongkOU bay nearby waters is set up by MIKE2 1 software．On the basis of proven by the measured data,hydrodynamic and sediment changes in the condition of only the Longkou artificial islands and four condition of Zhaoyuan artificial islands construction in stages after longkou artificial islands and water exchange within the channels of overall artificial islands are simulated and analyzed．We compared the schemes ofthe artificial islands constructed in stages from the perspective of ocean dynamics and water exchange．The results showed that in the construction of artificial islands in stages．earlY artifieial islands cause submarine topography and the dynamic environment changes，SO the evolution of the seabed sediment after the completion of later artificial islands is different from the overall construction plan．In the process of construction by stages of Longkou and Zhaoyuan artificial islands，long interval scheme is optimized considering the flow field and sediment deposition changes within the charmals of the whole group of