铁路隧道二衬背后脱空防治措施

摘要

为保证成昆铁路三峨山长大隧道(10352m)二衬施工质量,确保隧道二衬背后混凝土饱满密实无脱空,为工程顺利验交做准备、为隧道安全运营打基础,本文就隧道二衬背后脱空做原因分析,对防止隧道二衬背后脱空采取的施工措施做总结.%In order to ensure the construction quality of the secondary lining of Mount San'e Tunnel (10352m) of Chengdu-Kunming Railway, to ensure the concrete behind the secondary lining of the tunnel full dense and void-free, to prepare for the project survey, and to lay a foundation for tunnel safety, this paper analyzes the reasons of void behind the secondary lining of the tunnel and summarizes the prevention measures.