Numerical Study on the Siltation in Harbor Area of the Hongqili Waterway, Pearl River Delta
The Hongqili waterway, one of the main navigation channel in the Pearl River estuarial network, locates in the southeastern part of the Pearl River Delta, where is right adjacent to the Lingding Ocean. Thus this waterway is under the strong influence of both runoff and tides, resulting in sophisticated hydrological environments and erosion & sedimentation variation. A harbor project named Dagang is going to be carried out in the Hongqili waterway in order to enhance the local transportation performance. More than twenty docks of 1000t class (can be upgraded to 3000t class) will be constructed according to the design so that large amounts of excavation and dredging will be required in the harbor district and its navigation channels. This paper calculated the future siltation amounts in the excavation and dredging areas after the accomplishment of Dagang harbor. A two-dimensional numerical model was established to achieve this purpose. In this model integrated datasets including hydraulic, tidal and sediment data were all put into consideration. The model verification was based on the data series of both flood seasons (July-August in 2004) and nonflood seasons (April in 2008, January in 2009). The results indicate that only 1 year after the 1000t class docks construction the average siltation depth in the harbor area will reach 0. 41 -0. 66m, and the figure will be 0. 90 -1. 05m in the inlet channel. If the docks are all upgraded to the 3000t class, the average siltation depth will be 0. 60 -0. 96m in the harbor area, 1. 6 -1. 7m in the inlet channel, respectively. Therefore, in this study 1000t docks are suggested and 3000t upgrade can be expected in future after further research.
Chengwei Xu Liqin Zuo Huaixiang Liu
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute, Nanjing, 210029
国际会议
南京
英文
106-114
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）