大瑞铁路隧道二衬拱顶防脱空施工技术

Construction Technology of Anti-floating in the Second Lining Arch of Darui Railway Tunnel

结合大瑞铁路隧道二衬拱顶防脱空施工技术,介绍了隧道二衬拱顶防脱空施工工艺及方法,总结了施工经验,对以后的隧道二衬施工做了很好的指导作用。利于及早发现问题、分析原因、改进施工工艺,减少后续施工衬砌脱空现象的发生,促进衬砌质量的提高。

Combined with the anti-floating construction technology of the second lining arch of Darui Railway Tunnel,the construction technology and method of the anti-floating construction of the second lining arch of the tunnel are introduced.The construction experience is summarized and the construction of the second lining of the tunnel is well guided.It is helpful to find problems early,analyze the causes,improve the construction process,reduce the occurrence of subsequent lining voiding,and promote the improvement of lining quality.