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长江下游典型代表性潮型选择研究初探 被引量:6

Primary research on typical representative tidal type selection in the lower Yangtze River
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摘要 通过建立大通至长江口一维水沙数学模型,在实测资料验证的基础上计算得出沿程各站逐时潮位。利用计算得出的逐时潮位资料,研究了江阴、徐六泾和六效的高潮位以及日平均潮位与上游大通径流量的相关关系,分析上游径流与近河口河段潮位影响趋势。通过一维水沙数学模型结合不同潮差累积频率的代表性潮型作为下游控制条件计算,在比较河段实测冲淤量与计算冲淤量的基础上,分析不同潮差累积频率的代表性潮型适应性。 According to the one-dimensional water and sediment mathematical model for the river reach from Datong to the Yangtze Estuary,the hourly tidal level of each station was calculated on the basis of the measured data.The connection between the high tidal levels along with daily average tidal level and the runoff flux in Datong at Jiangyin,Xuliujing and Liuxiao was specifically investigated using the hourly tidal level information obtained from the numerical simulation,and the impact tendency of upstream runoff and tidal level near the estuary was analyzed.One-dimensional water-sediment mathematical model with the cumulative frequency under different tidal ranges was adopted as the control condition for downstream.Based on the comparison between actual and simulated scouring-siltation volume,the adaptability of typical tidal type for cumulative frequency of different tidal ranges was investigated.
出处 《水道港口》 2010年第5期501-505,共5页 Journal of Waterway and Harbor
关键词 潮流界 代表潮型 相关关系 适应性 tidal current limit representative tidal type correlation adaptability
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  • 1谢鉴衡,魏良琰.河流泥沙数学模型的回顾与展望[J]泥沙研究,1987(03).
  • 2李义天.冲淤平衡状态下床沙质级配初探[J]泥沙研究,1987(01).

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