石头沃隧道下穿引水隧洞施工技术

Seepage tunnel construction technique under the Shitouwo tunnel

结合工程概况,介绍了铁路隧道近距离下穿引水隧洞的施工技术及其技术参数,并阐述了其安全措施,实践证明,采用大管棚超前预支护,并辅以行之有效的超前地质预报等先进技术手段,可确保其上部结构物不受影响,同时又能保证隧道本身的安全、质量和工期。

Combined with project survey,it introduces the construction technique and technological data of the seepage tunnel short distance under the railway tunnel,and represents the safety measures.The experience shows the lead-lag pre-support by big aperture pipe shed and the advanced technical tool that is the effectual lead-lag geological prediction can assure the superstructure is good and the safety,quality and the time limit for project of the tunnel.