青岭隧道采用长大管棚处理断层破碎带坍方

Large Pipe Forepoling Technique for Collapse Treatment at Fault FracturedZone in Qingling Tunnel

青岭隧道在处理断层破碎带坍方地层的施工中,采用了跟管钻进长大管棚支护的施工技术,文章介绍了其工程概况及大管棚设计方案、施工工艺、施工方法和施工机具,并总结出了几点经验和体会。

Large pipe forepoling technique was used in the construction of Qingling tunnel for collapse treatment at fault fractured zone. This paper briefly introduces the project, the design scheme, construction technology, construction method and tools concerning with large pipe forepoling and meanwhile presents some experience.