隧道浅埋段更换初期支护的技术研究

Research on Initial Support Replacement Technology of Shallow-buried Tunnel Segment

文章结合水平山隧道工程实例,介绍了当浅埋段初期支护超出允许变形量、侵入二衬施工范围时,对初期支护进行更换的施工工艺,并阐述了浅埋段隧道更换初期支护的监控量测方法。

In combination with the engineering practices of Shuiping Mountain Tunnel,this article introduced the construction techniques to replace the initial support when the initial support in shallow-buried segment exceeded the allowable deformation and invaded into the secondary lining construction range,and described the monitoring measurement methods for initial support replacement of shallow-buried tunnel segments.