二郎山特长深埋隧道通风斜井反井法施工技术

Raise Construction Techniques for Inclined Ventilation Shaft of the Long, Deep- Buried Erlangshan Tunnel

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。

Abstract: 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 intersections and breakthrough of the incline shaft are described in detail.