东江三角洲咸潮加剧原因和对策探讨  

Study on reasons and measures to increasing seawater intrusion in Dongjiang Delta

作　　者：杨芳 邹华志 卢陈 万东辉 许劼婧 何颖清 Yang Fang;Zou Huazhi;Lu Chen;Wan Donghui;Xu Jiejing;He Yingqing

机构地区：[1]珠江水利委员会珠江水利科学研究院,广州510611 [2]水利部珠江河口治理与保护重点实验室,广州510611

出　　处：《中国水利》2022年第4期28-30,共3页China Water Resources

基　　金：国家重点研发计划项目(2021YFC3001000)。

摘　　要：2021—2022年枯水期,珠江流域东江三角洲发生有记录以来最严重咸潮,出咸时间早、上溯距离远、持续时间长,严重威胁沿线城市供水安全。为应对东江三角洲咸潮加剧态势,分析探讨咸潮加剧主要成因有东江流域持续旱情、狮子洋含氯度持续偏高、潮汐不利情况遭遇以及河床大幅下切等,提出应加快构建完善“上补、中蓄、下阻”综合防控体系、立足本地挖潜补短、强化节水、落实“四预”等抗旱防咸保供对策,保障沿线城市供水安全。During the dry season of 2021-2022,a serious salt tide that broke the record occurred in the Dongjiang delta of the Pearl River Basin.It not only came earlier but reached far upstream and lasted a long time,resulting in a negative impact on the security of water supply in the cities along the river.To cope with increasing threats caused by salt tide,the focus of analysis places on main reasons of the salt tide such as the continuous drought of the basin,the high chlorine content in the Shiziyang section,adverse tidal conditions,and sharp undercutting of riverbeds.A systematic approach of“releasing water in the upper stream,storing water in middle and blocking water in lower stream”is proposed.Other drought relief measures,including tapping new water sources,strengthening water-saving,implementing“four pres”measures are also advised to ensure the safety of urban water supply along the river.

关 键 词：东江三角洲 咸潮 供水 对策 

分 类 号：P731.2[天文地球—海洋科学] TV148[水利工程—水力学及河流动力学]