摘要
通过对埃塞俄比亚首都亚的斯亚贝巴市深井供水第三期工程项目的介绍,总结了高海拔、高扬程供水系统的设计经验。在经济技术水平落后的东非地区采用三级加压系统解决地势高差较大地区供水问题,选择球墨铸铁管材降低管道防腐维护难度,设置空气罐式防水锤系统应对因供电不稳定造成的停泵水锤,并针对当地特殊的黑棉土地质条件提出相应的基础级配换填和宽散水结构设计方法等。同时,对比分析工程设计中对水泵扬程、管道损失和水锤波动的计算结果与实际运行数据的区别,为今后类似地区实施高压供水工程项目的设计提供借鉴。
Through the introduction of Deep Wells Water Supply Project Phase m in Addis Ababa, the capital of Ethiopia, the design experience of high altitude and high-lift water supply system is summarized. The three-level pumping station is adopted in the low economic and technological region to solve the problem of high elevation water supply system. The ductile iron pipes are chosen to decrease the difficuhy of pipeline corrosion maintenance. The air hammer tank waterproofing system is set to avoid water hammer caused by unstable power supply. The basic gradation in fill and wide-dispersed structure design method are mentioned for dealing with local black cotton soil. Through comparison and analysis between calculation result and actual running data of pump head, pipeline loss, water hammer fluctuation, it is provided design experience for similar area of high pressure water supply.
作者
余仁志
郝新宇
鞠兴沂
怀肖清
金岳忠
YU Ren-zhi;HAO Xin-yu;JU Xing-yi;HUAI Xiao-qing;JIN Yue-zhong(Zhejiang Urban and Rural Planning Design Institute,Hangzhou 310030,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第16期73-76,共4页
China Water & Wastewater
关键词
深井供水
输水系统
高扬程
水锤防护
deep well water supply
water transmission system
high-lift
water hammer protection
