对澳供水大型原水管道工程设计  

Design of Large‑scale Raw Water Pipeline Project for Water Supply to China Macao

作　　者：谭庆俭 齐利华 付朝晖 祖士卿 郭丹丹 TAN Qing‑jian;QI Li‑hua;FU Zhao‑hui;ZU Shi‑qing;GUO Dan‑dan(Zhuhai Institute of Urban Planning&Design,Zhuhai 519000,China;Zhuhai Water Authority,Zhuhai 519000,China)

机构地区：[1]珠海市规划设计研究院,广东珠海519000 [2]珠海市水务局,广东珠海519000

出　　处：《中国给水排水》2023年第12期75-79,共5页China Water & Wastewater

摘　　要：对澳原水系统洪湾段为输水明渠,输水规模为45×104 m3/d,因洪湾区域的开发建设,为保障珠海、中国澳门供水安全,对该段输水明渠段进行迁改。通过对洪湾区域地形、地质、输水规模、输水线位、输水形式、输水安全、经济性等关键影响因素进行多方位的比选和分析,原水系统迁改方案推荐采用2-DN2000管道压力输送,长度4.67 km。工程方案重点解决大型双管布置、各类双管阀门井设计、过洪湾涌双顶管工艺设计、管道阴极保护防腐设计等技术难点,同时考虑输水安全,对下游泵站前池进行了扩容改造,使应对事故的有效响应时间增加1倍。目前该工程已建成运行一年以上,改造后的原水系统的可靠性和安全性得到验证。The Hongwan section belonged to the raw water system for water supply to China Macao is an open channel with a water delivery scale of 45×10^(4)m^(3)/d.Due to the development and construction of Hongwan area,this open channel section needs to be relocated and reconstructed to ensure the water supply safety of Zhuhai and Macao.Based on multi‑dimensional comparison and analysis of the key influencing factors in Hongwan area such as topography,geology,water delivery scale,water delivery pipeline,water delivery form,water delivery safety and economy,the raw water system relocation and reconstruction plan is recommended to adopt two DN2000 pipelines for pressure transmission,with a length of 4.67 km.The project plan focuses on solving technical difficulties such as large‑scale double‑pipe layout,design of all kinds of double‑pipe valve well,process design of double‑pipe jacking through Hongwan River and design of pipeline cathodic protection and anticorrosion.Meanwhile,considering the safety of water transmission,the front pool of the downstream pumping station is expanded and reconstructed to double the effective response time to accidents.At present,the project has been built and operated for more than one year,and the reliability and safety of the reconstructed raw water system have been verified.

关 键 词：对澳供水 大型原水管道 阴极保护 

分 类 号：TU991[建筑科学—市政工程]