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《Journal of Waterway and Harbor》 2008-04
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Study on the impacts of Lianyungang Port's extension project on water intake project of Tianwan Nuclear Power Station and corresponding measures

LI Meng-guo,LI Wen-dan(Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Engineering Sediment of Ministry of Communications,Tianjin 300456,China)  
By means of TK-2D software,mathematical models of tidal current,sediment movement and seabed erosion and deposition are set up in the sea area near Lianyungang Port and Tianwan Nuclear Power Station.On the basis of validation and verification of the models,the impacts of the extension project plan (3.5 km Qitai harbor construction plan) of Lianyungang Port on the constructed water intake project of Tianwan Nuclear Power Station are numerically studied,and the seabed erosion and disposition near the water intake and the displacement of the water intake isobath are calculated.In allusion to the influences caused by the extension project of Lianyungang Port,two schemes of measures(that is,the scheme extending the water intake open trench and the scheme extending the water intake open trench and sediment-blocking breakwater together) on water intake project are studied from the point of view of erosion and siltation,which are checked by semi-theoretical and semi-empirical formulae for sediment siltation calculation.The study results show that:(1) the coastal waters near the water intake will become a sediment deposit-promoting environment,the seabed will rise and the isobath at water intake will move outward 1 402 m after the construction of Lianyungang Port's extension project and the water intake of Tianwan Nuclear Power Station will not be able to work regularly and corresponding measures have to be taken;(2)When only the water intake open trench is extended eastward,the extension section will have obvious siltation.However,when the water intake open trench and the sedimentblocking breakwater are extended 1 500 m eastward together,the design water depth at water intake can be assured,and the sediment siltation can be reduced greatly.
【Fund】: 天津市应用基础及前沿技术研究计划(08JCZDZT00200)
【CateGory Index】: TV148
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