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Investigation on the Deposition in an excavated trough at the East Shore of Jiaozhou Bay, China

China Ocean Engineering 1995年第3期10卷 311-324页

作者： Zhang Jinshan Yu Guohua Research Engineer, River and Harbour Department, Nanjing Hydraulic Research Institute, Nanjing 210024 Research Senior Engineer, River and Harbour Department, Nanjing Hydraulic Research Institute, Nanjing 210024

Based on field investigations, this paper analyzes three types of harbour basinns and navigation channel excavated on seabed in Jiaozhou Bay, get a general rule of deposition for excavated trough, it found that pollution is one of crucial factors resulting in the deposition of the excavated trough in the east shore of Jiaozhou Bay. With these results, it predicted the annual deposition thickness for the excavated trough and disclosed the fact that it can't be deposited deadly during one storm. At the same time, with two-dimensional numerical model, it studied the effects of the excavated trough and the reclamation near shore on tidal cureent and said that the excavated trough can decrease the current velocity passing through the trough about 10- 15%, but only limited inside and near the trough and there are no effect on other regions; reclamation can cut off the pollution sources and no obvious effect on the currents of the Jiaozhou Bay. Connecting the deep trough and Cangkou tidal channel with a new excavated trough can improve the current conditions on the deep trough in some degree, but not great.

关键词： Jiaozhou Bay harbour basin navigation channel excavated trough sediment concentration muddy beach deposition tidal current numerical model.

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