口门延伸对西北江三角洲网河区分流比影响研究  

Research on the Influence of Estuary Extension on the Flow Distribution Ratio in the River Network in Pearl River Delta

作　　者：徐林春[1,2,3] 吕亮 林美兰 黄东[1,2,3] 梁汝豪 XU Linchun;LYU Liang;LIN Meilan;HUANG Dong;LIANG Ruhao(Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510635, China;Guangdong Key Laboratory of Hydrodynamic Research, Guangzhou 510635, China;Guangdong Provincial Science and Technology Collaborative Innovation Center for Water Safety, Guangzhou 510635, China;Shenzhen Water Engineering Testing Co.,Ltd., Shenzhen 518000, China)

机构地区：[1]广东省水利水电科学研究院,广州510635 [2]广东省水动力学应用研究重点实验室,广州510635 [3]广东省水安全科技协同创新中心,广州510635 [4]深圳市水务工程检测有限公司,广东深圳518000

出　　处：《广东水利水电》2021年第10期21-25,共5页Guangdong Water Resources and Hydropower

基　　金：广东省软科学研究计划项目(编号:2018B020207004);广东省水利科技创新项目(编号:2015-09)。

摘　　要：针对三大口门区域的天然及围垦延伸情况,结合1999年珠三角口门实测地形,选取“2001.2”、“1999.7”、“1998.6”3种典型的水文组合,采用口门潮流水动力数学模型,研究口门延伸对西、北江三角洲网河区分流比的影响。结果表明:大、中洪水时,延伸方案可增大北江片网河区域的净泄量;口门延伸对西江片网河区的影响大于对北江片网河区的影响。同时,上游来流量越大,口门延伸对网河汊点的分流比影响越小。Based on the current situation of the Pearl River Delta(PRD)in 1999,a 1D-2D coupled hydrodynamic mathematical model of river network and estuary of the PRD was established to study the response relationship between the flow distribution ratio 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”were selected.The results indicated that:In case of large and moderate floods,the extension scheme can increase the net discharge in the North River Delta network area.The influence of estuary extension on West River Delta network area was greater than that on North River Delta network area.At the same time,the larger the upstream flow,the smaller the influence of the estuary extension on the flow distribution ratio of the river network was.

关 键 词：口门延伸 网河 分流比 

分 类 号：TV143[水利工程—水力学及河流动力学]