不同导堤高程下射阳港区进港航道的淤积变化

粉沙质海岸泥沙具有易起动、易沉降、密实快的特点,对港口航道维护具有较大影响。通过双导堤布置形式来降低港池航道的回淤,是射阳港区进港航道整治工程中的关键。采用模型试验对不同堤顶高程下港区进港航道的泥沙淤积量及分布情况进行研究。分析表明,堤顶高程在平均高潮位附近可在工程造价和减淤效果两方面均取得较好的结果,可供类似工程设计时参考。

Variation of sediment deposition in approach channel of Sheyang port by different dyke top elevations

Characterized by easy starting up, quick settling and rapid compacting, the sedimentation of silty coast has a great impact on the maintenance of estuarine channel. Double-dyke construction is the key to the approach channel regulation project of Sheyang port in order to reduce the sediment deposition. This paper studies the sediment deposition and distribution of the channel with different dyke top elevations by model tests, and the results show a better deposition reduction and less cost of projects with a top elevation near mean high tide level,serving as a reference for similar engineering designs.