大连港登沙河港区潮流泥沙数模试验研究

依据最新的水文、泥沙实测资料进行了统计分析,为数模计算提供参数,然后建立多重嵌套潮流数学模型,计算正常天气下工程实施前、后的海域潮流场分布情况,并在年均含沙量的风浪条件作用下计算港池航道常年回淤情况,对港池航道建成后的年淤积量进行预报,从潮流泥沙角度为登沙河港区建设提供了设计依据。计算结果表明,3个方案实施后对周边水域影响均较小,港区虽有环流但强度较低,停泊区域流速很小。外航道区域方案一横流明显小于其他2个方案。3个方案实施后,港池航道年平均淤强介于0.08～0.12 m,淤积很轻。因此,该工程是可行的。

Study on tide current and sediment of Temsack River Port Project, Dalian Port

According to the up-to-date hydrological and sediment data of field observation, statistical analysis was done for the research and the parameters for the numerical model were provided firstly.By building up the multiple nested tidal numerical models, current field before and after the execution of the project under normal weather was simulated.The annual average sediment concentration was first computed under the wind and wave action ,then the sediment siltation was computed and the annual deposition distribution was also obtained after completion of the project.This study provides design basis for the project from the perspective of the sediment and current.The results show that the impact of the project on the surrounding waters is small after completion.The current intensity of port circulation and berthing area is very low.The cross-flow velocity of scheme one is significantly smaller than that of the other two schemes.The average deposition intensity during a year is 0.08- 0.12 m after the projects.Therefore,the project is feasible.