二郎山特长深埋隧道通风斜井反井法施工技术

摘要

结合二郎山特长公路隧道工程实例,文章针对隧道施工中遇到的难题,提出了在斜井对主洞掘进任务起不到辅助作用时,通过主洞反向施工斜井的施工方案.文章重点阐述了联络通道上跨主洞、地下风机房挑顶、各交叉口施工、斜井出洞等关键施工技术,可为今后类似隧道工程的施工提供参考.%Based on the case of the extra-long Erlangshan highway tunnel, a raise construction scheme is proposed for an inclined shaft when it is not useful for the construction of a main tunnel. And key techniques for construction of cross passage above the main tunnel, cutting of the top of underground fan room, construction of various intersec-tions and breakthrough of the incline shaft are described in detail.