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围堰充填是近代港湾建设的一种新型方法，海底泥水混合物在围堰中边流动、边沉降，是一个复杂的两相流动．本文以大连港大窑湾港区充填沉降流动为基础，用流网法对围堰中混合物的速度分布与浓度分布进行了预估计算，所得结果与模型实验结果吻合很好．
Cofferdam filling is a new method of modern harbor construction. The seabed muddy water mixture flows in the cofferdam while settling, which is a complicated two-phase flow. Based on the filling and settling flow of Dayaowan Port in Dalian Harbor, the velocity distribution and concentration distribution of the mixture in the cofferdam are calculated by flow net method. The results are in good agreement with the experimental data.