【摘要】 以甘肃省引洮工程总干渠中的隧洞工程为例,分析了隧洞所在区域的主要地质条件,着重研究了在隧洞施工过程中可能遇到的涌水、围岩稳定、极软岩、深埋隧洞地应力、饱水土和黄土隧洞等工程地质病害问题,提出了抽水、排水、导水相结合施工,隧洞顶拱回填灌浆以及隧洞初挖支护等水工隧洞施工方案,以防止隧洞段施工过程中各种地质病害的发生。更多还原

【Abstract】 Using Tao River diversions project in Gansu Province as an example,the paper analyzed the main engineering geological conditions of the tunnel.It studied mainly on the geological issues that might be happened during tunnel construction such as water burst,wall rock stability,dead-soft rock,deep tunnel’s ground stress,saturated soil and loess tunnel.The results give construction plans such as pumping,drainage,diversion,backfill grouting in the crown of arch,first supporting and so on.These measures will provide scientific references for preventing various geological diseases.更多还原