淤泥质、粉沙质及沙质海岸航道回淤统一计算方法  

A unified computation method of siltation for dredged approach channel in different sediment beaches

作　　者：刘家驹[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029

出　　处：《海洋工程》2012年第1期1-7,共7页The Ocean Engineering

基　　金：交通运输部西部科技经费资助项目(200632800003-03);水利部公益性行业科研专项经费资助项目(200901061)

摘　　要：根据20世纪80年代初提出的淤泥质海岸航道回淤计算方法的基础上,开展了拓展研究,使之统一适用于淤泥质海岸、粉沙质海岸及沙质海岸。主要研究内容有,在波浪和潮流综合作用下挟沙力含沙量研究中引入了特定的泥沙因子F1/F,从而挟沙力含沙量公式不仅适用于淤泥质泥沙,也适用于非淤泥质泥沙;在动力因素方面,除了一般寻常潮和波浪动力外,进一步考虑了风暴潮和破波的巨大掀沙能力造成航道骤淤的可能性。并结合连云港30万吨级主航道扩建及徐圩港区10万吨级航道的回淤问题(包括骤淤可能性问题),京唐港外航道和黄骅港外航道的骤淤问题,进行预测计算及校验计算,结果都是良好的。此外,对杭州湾强潮和涌潮情况下的挟沙力含沙量也进行了校验计算,结果也非常满意。This paper is based on the computation method of dredged approach channel in clay silt beach that was advanced by the au- thor in the early 1980s. In order to unify the computation method of dredged approach channel in different sediment beaches, the author does a further research in this paper. There are two main researches in this paper. One is the introduction of the special sediment factor FI/F in the research of the carrying capability of suspended sediment under combined actions of waves and current, so as to make the computation formula available not only in clay silt beach, but also in fine silt beach and sand beach. The other is about the hydrodynam- ic factors. The paper further considers the possibility of sudden siltation in the approach channel, which is caused by the enormous ener- gy of both the storm surge and breaking waves that makes sediment suspend in the water, including the hydrodynamic force of the nor- mal tidal current and waves. This paper does the forecast computation and checkout computation of the sediment siltation （ including the possibility of sudden siltation in the approach channel ） in the 300 000 DWT（Xuwei） at Lianyungang Port and the 100 000 DWT at Xuwei Port, and the sudden siltation in the outer channel of Jingtang Port and Huanghua Port. All the computation results are good. Besides, this paper also does the checkout computation of the carrying capability of suspended sediment in the case of strong tide and tidal bore in Hangzhou Bay, the results of which are also pretty good.

关 键 词：淤泥质海岸 粉沙质海岸 沙质海岸 航道回淤 骤淤 

分 类 号：TV148[水利工程—水力学及河流动力学]