In this paper, the tunnel model was coupled with the 2-d tidal current model to simulate the water body exchange process. The influence of design parameters on internal tidal level was studied, including the import and export position of water pipe and drainage pipe, the number of pipeline, and the distribution proportion. Research results show that the model can better simulate the culvert under different flow hydrodynamic features, and it also can present the influence of bottom slope of pipeline and pipeline elevation on water body exchange process. In actual application, the model should be coordinated with sectional physical model, and the key parameters of culvert model should be checked in order to provide more reliable data for the engineering design.%文章采用隧洞模型耦合二维潮流模型模拟内外海水体交换过程,研究取水管及排水管进出口位置、取水管与排水管个数及分配比例等设计参数对内海潮位的影响.研究结果表明该模型能较好的模拟涵洞在不同流态下的水动力特征,能够体现管道底坡、管道高程等设计参数对内外海水体交换的影响.该模型在实际应用中还应与断面物理模型配合,校核涵洞模型关键参数,以便为工程设计提供更为可靠的数据支撑.
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