甘肃引洮供水一期总干渠隧洞工程不良地质洞段处置与建设管理思考

Tunnel construction and operation under unfavorable geologic conditions on main canal of Phase-Ⅰ Water Diversion Project from Tao River in Gansu Province

大型跨流域调水工程中隧洞是一种常见的建筑物布置型式。引洮供水一期工程总干渠隧洞施工过程成功处理了涌水、深埋隧洞地应力、疏松砂地层、饱水黄土等不良地质洞段的建设与管理问题,为类似工程建设防止各种地质病害的发生可提供一定的借鉴。

In the construction of large-scale water diversion project, tunnels as popular structures are usually included. During the construction and operation of main canal for Phase-I Water Diversion Project from Tao River in Gansu Province, considerations had been given to unfavorable geological conditions such as water burst, geostatic stress of deep tunnel, loose sand strata and saturated loess. The practice can provide experiences to similar projects for geological hazard prevention and control.