西北江三角洲网河区洪潮水位与口门延伸的响应关系  

Response Relationship between Flood Tide Level and Estuary Extension in the River Network in Pearl River Delta

作　　者：徐林春[1] 林美兰[1] 黄东[1] 蔡素芳[1] 李海彬[1] 何书琴[1] XU Linchun;LIN Meilan;HUANG Dong;CAI Sufang;LI Haibin;HE Shuqin(Guangdong Research Institute of Water Resources and Hydropower,Guangdong Provincial Key Laboratory of Hydrodynamics Research,Guangzhou 510635,China)

机构地区：[1]广东省水利水电科学研究院广东省水动力学应用研究重点实验室,广东广州510635

出　　处：《广东水利水电》2018年第11期35-39,共5页Guangdong Water Resources and Hydropower

基　　金：广东省水利厅科技计划项目(编号:2007-03);国家重点研发计划项目(编号:2016YFC0402606);广东省水利科技创新项目(编号:2015-09);广东省省级科技计划项目(编号2017A070701011)

摘　　要：以1999年珠三角口门现状情况为基础,针对鸡啼门、磨刀门和横门三大口门部分区域的自然延伸情况,采用网河一维——河口二维水流整体数学模型,选取"98. 6"、"99. 7"、"01. 2"三种典型水文组合,研究西、北江三角洲网河区洪潮水位与口门延伸之间的响应关系。结果表明:一方面,口门延伸有明显阻滞洪水自三角洲网河区域下泄口门的作用;另一方面,口门延伸可使潮汐通道更为顺畅,有助于枯水期外海潮水上溯三角洲网河区域,入侵网河区河道。Based on the situation of the Pearl River Delta（PRD） in 1999, a 1D-2D coupled hydrodynamic mathematical model of river network and estuary of the PRD is established to study the response relationship between the flood ＆ tidal water level and the natural estuary extension of Jitimen, Modaomen and Hengmen in the West and North River Delta. The typical hydrological combination such as “98.6”, “99.7” and “01.2” are selected. The results indicate that： On the one hand, the estuary extension has a significant role in blocking flood discharge from the outlets of the delta river network; On the other hand, it can make the tidal passageway more smoothly, and help the tidal water to flow back to the delta net river area in the dry season and invade the channel of the net river area.

关 键 词：口门延伸 网河 洪潮水位 响应 

分 类 号：TV143[水利工程—水力学及河流动力学]