【作者】 严烈； 黄国富；

【Author】 YAN Lie,HUANG Guo-fu Chinese Ship Science Research Center,Shanghai,200011,

【机构】 中国船舶科学研究中心；

【摘要】 为了确定泥沙模型试验中模型沙的尺寸和含沙量,采取了查阅文献、调研相关水文单位以及实船取样等手段,对宁波几个典型港口的泥沙情况进行了调查研究。调研结果显示:近岸水体的含沙量较高,年平均含沙量范围为0.8～1.4kg/m~3;泥沙的粒径细小,其中值粒径在4～15μm之间;不同泥沙的含沙量及粒径分布受测点、季节、潮型和水深的影响差别较大。实船取样表明,实船压载舱中泥沙粒径主要集中在8～16μm附近,其中90%的累计粒径分布在0-44.938μm,该结果与调研数据保持一致。更多还原

【Abstract】 Based on the literature data,the related hydrological unit’s survey and sampling on ship, several typical ports in Ningbo are investigated and discussed in order to determine the size and sediment concentration of model sediment particles in model test.It is pointed out that coastal suspended sediment concentration is high,annual average sediment concentration is showed in the range of 0.8-1.4 kg/m~3.Besides,the size of sediment particle is relatively small.The mediμm size is among 4-15μm.It is obvious that sediment concentration and particle size are distinct relatively, which is effected by the differences of measuring points,seasons,tide types and water depth.After sampling on ship,we conclude that the sediment particle size is mainly focused on 8-16μm,the range of 0-44.93 8μm is equal to 90 percent of the whole cμmulative size distribution.Consequently, the sampling results are consistent with the surveying data significantly.更多还原