钱塘江河口围涂工程对杭州湾水动力和水环境的影响

发布时间：2018-01-14 15:00

本文关键词：钱塘江河口围涂工程对杭州湾水动力和水环境的影响　出处：《水运工程》2017年01期 　论文类型：期刊论文

更多相关文章： 杭州湾 治江围涂 水动力 水环境

【摘要】：基于钱塘江河口特殊的自然特征,自20世纪60年代开始,钱塘江河口进行了大范围的治江围涂。由MIKE软件建立了杭州湾水动力水质模型,探讨钱塘江河口围涂工程对杭州湾潮流场、盐度场以及水质的影响。研究结果表明,仅在工程区域附近影响了杭州湾水域的水动力特征,使得河口区的流速增大;围涂工程使得湾内盐度等值线后退,有效地减弱了杭州湾的盐水入侵;工程后随钱塘江而来的污染物得到了更快的扩散稀释,减弱了河口区水体的污染。
[Abstract]:Based on the special natural characteristics of Qiantang River Estuary, since 1960s, the Qiantang River Estuary has carried out a wide range of surrounding coating. The hydrodynamic water quality model of Hangzhou Bay has been established by MIKE software. This paper discusses the influence of the surrounding coating engineering of Qiantang River estuary on the tidal current field, salinity field and water quality of Hangzhou Bay. The results show that the hydrodynamic characteristics of Hangzhou Bay waters are affected only near the engineering area. The velocity of flow increases in the estuary area; The enclosed coating project makes the salinity isoline recede in the bay and effectively weakens the salt water intrusion in Hangzhou Bay. The pollutants coming from Qiantang River are diffused and diluted more quickly after the project, which weakens the water pollution in the estuary area.
【作者单位】：大连理工大学海岸和近海工程国家重点实验室;
【基金】：国家自然科学基金项目(51579030) 国家重点基础研究发展计划项目(2013CB430403)
【分类号】：U655.5
【正文快照】： 钱塘江河口是世界著名的强潮海湾,河床宽浅,主槽摆动频繁,河床冲淤剧烈,河势很不稳定。钱塘江特殊的自然特性给防洪、御潮和排涝带来了极为不利的影响,为了减轻其河床冲淤变化大、主槽频繁摆动的危害,自20世纪60年代开始,进行了大规模的治江围涂,钱塘江河口不断缩窄江道、稳定

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