NUMERICAL SIMULATION OF FLOW AND SEDIMENT PROCESS BEFORE AND AFTER THE IMPLEMENTATION OF CAOFEIDIAN EMBANKMENT IN BOHAI BAY
“There are deep channels in the seaward side and shoals in the landward direction. This is the distinctive characteristic and superiority of Caofeidian, which provides the best advantage for the construction of large-sized deep water port as well as the development of near-harbor industry. For the development of deepwater port, the embankment that connects Caofeidian with land becomes the key and difficult problem. With the implemention of the embankment, there appeared some important problems such as the effect on the structure changes of the tide current field and the hydrodynamic environment in Caofeidian area and the Laolonggou navigation channel, which are concerned about the future of deepwater port development. A 2D mathematical model for flow and sediment transport under the coaction of waves and tidal currents in Caofeidian area is employed to study the effect of the embankment. Flow and sediment process is simulated before and after the implementation of Caofeidian embankment. At first, the model is validated by use of tidal current data at the time before the embankment is built (1996). On such a basis, particular verification and analysis are done by use of tidal and sediment data in 2006 after the embankment and the ore dock are finished. Then, effect of Caofeidian embankment on hydrodynamic environment is studied. Seabed deformation from 2004 to 2006 is simulated by the mathematical model, concerning the combined actions of tidal currents and perennial wave elements. The results show that, currents from the east and the west are separated by the embankment, and the current velocity in front of Caofeidian foreland is increased slightly. However, the structure of tide current field is not changed. Seabed in front of the Caofeidian foreland is eroded and there is a local deposition strip at the nearshore side of the east and west of Caofeidian.
wave and tidal currents sediment hydrodynamic environment numerical simulation Caofeidian Bohai Bay
Liqin Zuo Yongjun Lu Rongyao Ji
Department of River and Harbor Engineering, Nanjing Hydraulic Research Institute, 34 Hujuguan Road, Nanjing Hydraulic Research Institute, 34 Hujuguan Road, Nanjing, China
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）