长江南通河段天生港水道在潮流界范围以内,其流态受长江径流、潮流相互作用。汛期径流作用大,枯季潮流作用大。流量、水位、流速随时在变化,因此,在整治水道过程中,对造床设计流量如何确定,难度较大。既不能单纯地套用一般河道推求造床设计流量的方法,也不能应用潮波传递的方法。我们分析了长江南通河段近年水文实测资料,认为可以用 The natural course of the Nantong section of the Yangtze River is within the confines of the tidal current and its flow regime is affected by the runoff and tidal currents of the Yangtze. Large flood season runoff, the role of the trend of dry season. Flow, water level, flow rate at any time in the change, therefore, in the process of remediation waterway, how to determine the flow of bed design, more difficult. Neither can we simply apply the method of deducing the design flow of the bed for general river courses, nor can we apply the method of tidal wave transmission. We analyzed the hydrological data of the Nantong section of the Yangtze River in recent years and found that we can use it