浅谈广州地铁矿山法暗挖隧道喷涂防水试验

Mine Act of Guangzhou Metro Bored Tunnel Waterproofing Spray Test

地铁几乎都以浅埋隧道在城市密集群地表以下修建,岩层风化严重,特别在沿海地区和广州珠江三角洲地带,地下水发育,为寻找更适合于矿山法隧道、车站的防水方法,广州地铁在四号线大学城南站四、七号线联络通道进行了喷涂防水试验。本文结合广州地铁建设的工程实践认识,阐述了矿山法暗挖隧道喷涂防水施工试验的相关技术。

All most subways were shallow tunnel and built under urban district, and weathering terrane is severe, especially in littoral and Guangzhou Zhujiang delta area where underground water is rich. For the purpose of looking for suitable mining method tunnel and waterproof method of station, jetting to prevent water test has been carried out on No.4 and No.7 connecting underpasses, South station of Universities, No.4 line of Guangzhou subway. Using knowledge of Guangzhou subway construction, this paper shows relevant technology of jetting to prevent water on cut ＆cover tunnel.