摘要
基于MIKE3 FW模式,建立覆盖整个珠江8大口门区的三维高精度水流盐度数学模型,研究珠江口的咸潮上溯问题。模型主要采用三角形无结构网格,航道较为顺直,采用四边形网格进行加密。模型验证良好,能够较好地反映珠江口地区三维水动力格局与盐度分布特征。重点分析了磨刀门口门区三维水动力、盐度特征,并且基于近年来珠江三角洲地区日益增多的航道整治工程,研究计算了磨刀门航道整治工程对咸潮上溯的影响。研究表明航道整治工程使得近海地区的盐度值有所增大,咸潮上溯距离有所增加,但工程对咸潮上溯的影响不大,不是珠江三角洲地区近年来咸潮上溯的主要原因。
Based on MIKE3 FW model, we establish the three-dimensional salinity mathematical model covering eight entrances to study the problem of saltwater intrusion. Triangles was mainly adoptted, and quadrilateral grid was used to refine the straight channel. The validation is better, and the three-dimensional hydrodynamic and salinity distribution characteristics in Pearl fiver mouth area are reflectted. The three-dimensional hydrodynamic and salinity characteristics in Modaomen sea area are mainly analyzed and the influence of saltwater intrusion about the Modaomen waterway regulation project is studied. The results show that the salinity value and saltwater intrusion distance are increased by waterway regulation engineering. But the influence is small, and it is not the main reason for the saltwater intrusion in recent years.
出处
《水运工程》
北大核心
2015年第10期138-143,共6页
Port & Waterway Engineering
关键词
珠江河口
数值模拟
航道整治
咸潮上溯
the Pearl River estuary
numerical simulation
waterway regulation
saltwater intrusion
