轨道交通采空区隧道施工难点及技术

Construction Difficulties and Technology of Rail Transit Goaf Tunnel

地下采空区问题是困扰轨道交通工程的棘手问题,易影响新建隧道的施工安全和结构稳定性,要求施工单位采取科学可行的施工技术,确保隧道的安全建设和正常运营。基于此,论文以某隧道工程为例,根据采空区分布规律及塌陷特点,分析采空区隧道施工风险,探讨隧道穿越采空区的处治方案,做好前期勘察、注浆加固、初期支护等相关工作,通过科学合理的组织安排,最终顺利完成采空区隧道的施工,隧道施工安全和施工质量达到设计要求。

The problem of underground goaf is a thorny problem plaguing rail transit engineering,which is easy to affect the construction safety and structural stability ofnew tunnels,and requires the construction unit to adopt scientific and feasible construction technology to ensure the safe construction and normal operation of tunnels.Based on this,this paper takes a tunnel project as an example,analyzes the construction risk ofthe goaftunnel according to the distribution law ofthe goaf and the characteristics of collapse,discusses the treatment plan of the tunnel through the goaf,and does a good job in the early investigation,grouting reinforcement,initial support and other related work.Through scientific and reasonable organization arrangements,the construction of the goaf tunnel is finally completed successfully.Tunnel construction safety and construction quality meet the design requirements.