健跳港上游引水对海床冲淤影响的数值模拟分析

Impacts on bed evolution by mathematic model due to diversion works upstream of Jiantiao channel

健跳港是一个狭长的淤泥质港汊,针对枯季和洪季健跳港海床不同的冲淤特点,利用一维潮流泥沙模型复演了该港海床的冲淤过程,通过调整挟沙力系数来模拟健跳港枯水期的淤积和洪水期的冲刷这两种不同的海床变化形态,并预测了健跳港上游引水后对该港河床的淤积影响。

Jiantiao tidal channel is silty channel with long and narrow shape. This paper model the scour and siltation process using one dimensional mobile bed mathematic model according to the different aspect during dry season and flood season. It models the silt process during dry season and the scour process during flood season by calibrating the sediment-carrying capacity coeffient and forecasts the impact on silt process in Jiantiao channel due to diversion upstream.