隧道平行导洞塌方整治方案分析

Treatment Study on A Pilot Tunnel Collapse

长大隧道的平行导洞作为正线隧道的排水、消防或救援通道使用,塌方会引起隧道正洞排水不畅,消防、救援功能缺失。但类似参考的平行导洞病害整治设计方案较少,不利于快速设计及病害整治。本文通过分析南昆线米花岭隧道入口平行导洞塌方病害,提出基本整治设计方案,并针对恢复平行导洞衬砌方案进行图文阐述,以减少衬砌模板使用类型和加工,方便现场施工,节约成本。可供类似的铁路隧道平行导洞塌方病害整治提供方案设计及整治参考。

The Pilot tunnel of the long tunnel is used as the drainage,fire fighting or rescue channel of the mainline tunnel,and its collapse will cause poor drainage of mainline tunnel,fire fighting and rescue function is lost.Similar to the reference of pilot tunnel disease remediation design scheme is less,not conducive to rapid design and disease remediation.Based on the analysis of collapse disease in the entrance of pilot tun-nel of Mihualing Tunnel of Nankun Line,this paper puts forward the basic design scheme,illustrates the lining restoration scheme of the pilot tunnel,reduces the types of lining templates,facilitates construction and saves cost.It can provide reference for similar remediation projects.