盐水入侵理论预测模型及其在钱塘江河口的应用

发布时间：2018-05-07 23:05

本文选题：盐水入侵 + 预测模型　；参考：《水力发电学报》2016年11期

【摘要】：盐水入侵是河口地区较为严重的环境问题,对各用途用水都有一定影响。钱塘江河口作为杭州的主要饮用水源地,近年来受盐水入侵影响较为严重。虽然2D和3D数值模型在盐水入侵方面已得到广泛应用,然而理论预测模型只需要较少的数据即可建立,更加快速高效。本文在Savenije一维盐度平衡方程基础上,建立了钱塘江河口(地形以指数形式衰减)涨憩和落憩时刻的盐水入侵预测模型。我们采用2012年11月7—9日(小潮)和11月14—16日(大潮)时段的实测水文、盐度数据对模型进行率定和验证。结果表明,模型盐度计算值和实测值吻合较好,并且通过模型计算得出钱塘江盐水入侵长度也具有一定精度。
[Abstract]:Salt water intrusion is a serious environmental problem in estuarine area, which has certain influence on water use. Qiantang River estuary, as the main drinking water source in Hangzhou, has been seriously affected by salt water intrusion in recent years. Although 2D and 3D numerical models have been widely used in saltwater intrusion, theoretical prediction models need only a small amount of data and can be established more quickly and efficiently. On the basis of Savenije's one-dimensional salinity equilibrium equation, a prediction model of saltwater intrusion in Qiantang River Estuary (whose topography attenuates exponentially) is established in this paper. We use the measured hydrological and salinity data from November 7-9 (low tide) and November 14-16 (spring tide) to verify the model. The results show that the calculated values of salinity of the model are in good agreement with the measured values, and the length of salt water intrusion in Qiantang River also has a certain accuracy through the calculation of the model.
【作者单位】：浙江大学港口海岸与近海工程研究所;
【基金】：教育部博士点基金资助项目(2120101110108)
【分类号】：P731.2

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