洋山深水港四期工程港区增深可行性研究

根据洋山深水港区近期(2009年~2013年)的现场观测资料,通过对多年实测资料的对比分析和数值模拟,深入研究了洋山港海域冲淤变化和四期港区泥沙淤积情况。其结论显示:大小洋山主通道海域海床总体稳定,西北部局部的冲刷环境为四期港区港池航道的增深创造了有利条件,预测洋山深水港区四期工程港池和航道的年回淤强度为1.0~2.0 m,接近二期港区的实际淤强,计算回淤量为457~881万m3,二期工程港池和外航道的成功开挖,表明港区的增深可以实现。

Feasibility analysis of different depth plan in Shanghai Yangshan Deepwater Port Phase IV Proiect

On the basis of observation data in Yangshan Deepwater Port area during 2009 - 2013, the variation of erosion and siltation in Yangshan Deepwater Port Phase IV Project was analyzed according to numerical simula- tion results and the measured data of past years. The results show that： Overall stability in Yangshan sea area and northwest erosion environment create favorable conditions for different depth plan of dock basin and channel of the phase Ⅳ project area. Annually back silting intensity of dock basin and channel of the phase IV project area is 1.0 - 2.0 m, which is close to actual silting intensity of phase Ⅱ project of harbor area. The quantity of back silting is 4 570 000 - 8 810 000 m3. Successful excavation of the phase Ⅱ project of dock basin and outer channel of Yang- shan Deepwater Port illustrates that it is possible to carry out the different depth plan of harbor area.