虾峙门航道回淤研究

Back silting studies of Xiashimen channel

虾峙门口外海域为顺时针旋转流。本文在分析本海域潮汐、潮流、波浪、泥沙特性的基础上，建立含沙量场，并根据旋转流作用下航道回淤的特点，初步估算了开挖航道的回淤量。研究表明：从航道回淤及维护的角度考虑，虾峙门口外开挖２０～３０万ｔ级航道是可行的。

Tidal current in Xiashimen water area is a kind of clockwise whirl current. Based on analysis of tide, tidal current, wave and sediment, the distribution of suspended sediment concentration was set up. According to channel deposition characteristic under whirl current, the paper estimates deposition amount of channel which is planned to be excavated. Considered from channel deposition and its maintenance, it is feasible to excavate twenty thousand to thirty thousand tone channel outside of Xiashimen entrance.