大亚湾芒洲岛海域移动溢油数值模拟研究

Oil spill numerical simulation on the wharf engineering of Mangzhou Island in the Daya Bay

采用平面二维潮流、溢油数学模型,以大亚湾芒洲岛附近海域为例进行溢油事故模拟研究。重点将移动源和固定点源的模拟结果进行对比,可以得出,相同工况下,移动源在瞬时油污面积和扫海面积方面均远远大于固定点源,并且两者的比值,随时间的增加而逐渐减小,直到趋向一个稳定值。在乳化量方面,风是主要影响因素,而移动源和固定点源之间的差别不大。由于溢油点源离水产资源保护区比较近,溢油事故如果发生,油污可能在24 h之内进入保护区,造成污染。

Using 2-d flow, oil spill numerical model is used to simulate the Daya Bay waters near Mangzhou Island. Comparing the results of moving sources and fixed sources, under the same conditions, the pollution areas and sweeping range of the former are much larger than those of the latter. The ratios of them will decrease with time going until reaching their certain values. Concerning the emulsification amount, wind is the main factor, while there is only a little difference between the moving source and fixed source. Since there is an aquatic resource conservation area near the oil spilling sources, if there is an accident, the spilled oil will reach the aquatic resource conservation area in 24 h, which may lead to the pollution.