潍坊港沉积物特征及岸滩稳定性研究

通过潍坊港海岸动力地貌调查,分析研究了潍坊港各港区的水下沉积物分布特征。近岸沉积物质主要表现为极细砂与砂质粉砂,源于历史上黄河及附近河流的泥沙,中值粒径大致在0.01～0.4 mm,分选程度为分选好-中常。通过不同历史时期海图的等深线和断面海床冲淤变化对比,分析认为,潍坊中港区以西,受黄河口泥沙扩散、沉积影响,海床一直处于持续淤涨之中,这种趋势还将持续,潍坊中港区以东海床则基本保持稳定。从黄河口流路变迁这一角度来看,该海区岸线将在长期内保持稳定。

Study on sedimentary characteristics and shore stability in Weifang Port

By dynamic geomorphologic survey on the shore of Weifang Port,the distribution characteristics of the underwater sediment in each harbor district of Weifang Port were studied in this paper.The sediments near the shore were mainly very fine-sand and sandy silt,which originated from the sand of the Yellow River and the rivers nearby in historical period.Its median size was approximately 0.01～0.4 mm,and its sorting degree varied from fine degree to moderate degree.By the contrast of the depth contour and the sea bed variation at different historical periods,the analysis suggests that the sea bed in the west of Weifang Port＇s middle district is silting-up continuously,and the trend will last for a long time.But the sea bed in the east of Weifang Port＇s middle district basically maintains stable.From the standpoint of flow path＇s transition of the Yellow River estuary,the shore will maintain stable in a long period.