分离式隧道工程二次衬砌及充填压浆施工技术

Construction Technology of Secondary Lining and Filling Grouting for Separated Tunnel Engineering

为了探讨分离式隧道工程二次衬砌及充填压浆施工技术的应用效果,通过G211印江至思南段公路改扩建工程实际情况,以施工的重难点为切入点,从二次衬砌和充填压注浆两个方面,分析了分离式隧道工程的施工要点及经验。分离式隧道工程作为高速公路施工中常用的隧道工程形式,能够很好地解决相互施工造成的不良影响,加大二次衬砌和充填压浆施工技术的应用,能够更好地保证施工质量,降低隧道围岩和地质条件造成的影响,保证施工进度和施工的安全性。

The case of G211 Yinjiang-Sinan Highway Reconstruction Project is introduced in order to explore the application effect of secondary lining and filling grouting construction technology in separated tunnel engineering.The difficult construction points and experience of separated tunnel engineering is illustrated mainly from technical aspects as secondary lining and filling grouting.As a common form of tunnel engineering in expressway construction,separated tunnel engineering can well solve the adverse effects caused by mutual construction,increase the application of secondary lining and filling grouting technology,so as to ensure the construction progress and safety with better quality and less impact of tunnel surrounding rock and geological conditions.