文库下载免费文档下载/ 本文档下载自文库下载网,内容可能不完整,您可以点击以下网址继续阅读或下载: / 洋山港区域挟沙力公式研究 2013 年11月第11期总第 485 期水运工程 Nov. 2013 洋山港区域挟沙力公式研究*沈淇,顾峰峰,戚定满,孔令双,万远扬,王巍(上海河口海岸科学研究中心,河口海岸交通行业重点实验室,上海 201201 ) 摘要:利用基于能量平衡观点推导的挟沙力公式,考虑到洋山港海域涨落潮期间悬沙浓度存在一定差异,分别建立了该区域涨潮时期及落潮时期挟沙力公式。利用计算底部通量切引力公式与挟沙力公式相等方法,估算了实测期间水体挟沙力值,并以洋山港 2003 年10 月实测的水沙资料进行率定。最后,采用洋山港 2005 年7月实测含沙量资料对公式计算结果进行验证。验证结果表明,所建立的挟沙力公式具有较高精度,其计算的含沙量变化与洋山港实际情况较为符合。关键词:洋山港;挟沙力公式;涨落潮;含沙量文库下载免费文档下载/ 中图分类号: TV148 文献标志码: A文章编号: 1002-4972(2013) -0083-04 Onformula for suspended sediment carrying inYangshan harbor (Key Laboratory ofEstuarine &Coastal Engineering, Ministry ofTransport, Shanghai Estuarine and SHEN Qi, GUFeng-feng, QIDing-man, KONG Ling-shuang, WAN Yuan-yang, WANG Wei Coastal Science Research Center, Shanghai 201201, China) from the viewpoint ofenergy balance, for suspended sediment carrying inthe Yangshan harbor ofeach flood and ebb tide are established. The suspende/ sediment carrying iscalculated from the equation that the formula evaluating the Yangshan harbor inOctober of2003 istaken tocalibrate the coefficients ofthe formula for suspended sediment harbor inJuly of2005. The result shows that the established formula for suspended sediment carrying inthe Yangshan harbor has ahigh precision. The calculated sediment concentration isinagreement with the measured ones. Abstract: Considering the sediment difference during the flood tide and the ebb tide, two formula deduced the bottom sediment flux byshear stress equals the formula bysuspended sediment carrying. The observed data atcarrying. Finally, the formula isverified bythe measured data ofsuspended sediment concentration inthe Yangshan Key words: Yangshan harbor; suspended sediment carrying; flood and ebb tide; sediment 文库下载免费文档下载/ concentration 分析方法[2-4] ,它是通过寻找水流挟沙力主要的影响因素或因子, 然后采用实测资料进行回归和统计分/ 析;其二是采用因次分析法[5-6] ,该方法通过分析水流挟沙力主要的影响因素,通过量纲分析,来确立挟沙力公式;其三是采用能量平衡的方法,其中最具代表性的工作是维利坎诺夫[7] 的重力理论以及张瑞瑾[8]
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