江苏射阳港3.5万吨级进港航道回淤特征研究

基于实测水文和地形资料对射阳港3.5万吨级进港航道开挖以后的回淤特征及回淤机理进行研究。结果表明:射阳港所在海域受废黄河三角洲冲刷泥沙输移的影响,含沙量较高,为航道回淤提供了丰富的泥沙来源;进港航道年回淤量为995万m³,其中导堤掩护段占全航道回淤量的93%,该段平均回淤强度可达5.0 m/a,高于开敞海域段的0.6 m/a。导堤掩护段航道回淤主要是由于涨潮期带入的高含沙水流在憩流时刻形成悬沙落淤所致,航道两侧滩面上的流泥归槽以及洪季期间上游河流的开闸泄洪对航道回淤也有一定贡献。

Back silting characteristics of 35, 000 DWT navigation channel at Sheyang Port in Jiangsu Province

Based on the measured hydrological data and several topographic maps,we analyze the back silting characteristics of 35,000 DWT navigation channel at Sheyang Port.The results show that the sea area where Sheyang Port is located is influenced by the sediment transport of the ancient Yellow River Delta,which has a high sand content and provides a rich source of sediment for the siltation of the channel;the annual siltation of the inlet channel is 9.95 million m³,of which the section covered by the guide dike accounts for 93%of the total siltation of the channel,and the average siltation intensity of this section can reach 5.0 m/a,which is higher than that of the open sea section of 0.6 m/a.The siltation of the channel in the section covered by the guide dike is mainly due to the high sandy water brought in during the high tide period,which also contributes to the siltation of the channel.