摘要
为了实现对锦屏引水隧洞群西端施工过程中大流量地下水的有效预测和处治,针对隧洞群埋深大、洞线长、洞径大、水头高、逆坡施工等工程特点,将地下水的导排分为2个阶段:第一阶段设置固定的泵站,采取大直径水管直接抽至支洞口;第二阶段通过竖井将地下水抽至锦屏山隧道后自然排出。结果表明:引进煤矿的抽排水理念,配置大功率设备,设置大积水仓,能够在最短的时间内完成地下水抽排并恢复施工。
In order to realize the effective prediction and treatment of large groundwater flow in the west end of Jinping diversion tunnel group,the drainage of groundwater was divided into two stages based on the engineering characteristics such as large depth of tunnel,long line,large section,high groundwater level and adverse slope construction.In the first stage,a fixed pumping station was set up,and the groundwater was directly pumped to the entrance of the diversion tunnel through a large-diameter pipe.In the second stage,groundwater would be drained to the Jinping Mountain tunnel through the shaft and naturally discharged.The results show that by introducing the concept of pumping and drainage from the mining industry,preparing high-power equipment and big water tank for storage,the drainage of groundwater can be finished in no time and the construction can be resumed as soon as possible.
作者
王路
张恒
吴建文
WANG Lu;ZHANG Heng;WU Jianwen(Department of Road and Bridge Engineering,Sichuan Vocational and Technical College of Communications,Chengdu 611130,Sichuan,China;Key Laboratory of Transportation Tunnel Engineering of Ministry of Education,Southwest Jiaotong University,Chengdu 610031,Sichuan,China;Department of Architectural Engineering,Sichuan Engineering Technical College,Deyang 618000,Sichuan,China)
出处
《筑路机械与施工机械化》
2018年第1期83-87,共5页
Road Machinery & Construction Mechanization
基金
中央高校基本科研业务费专项资金资助项目(SWJTU11ZT33)
教育部创新团队发展计划资助项目(IRT0955)
关键词
锦屏二级水电站
引水隧洞
逆坡施工
地下水处治
Jinping secondary hydropower station
diversion tunnel
adverse slope construction
groundwater treatment
