某高速公路隧道初期支护侵限段换拱施工技术研究

Research on Arch Replacement Construction Techniques for Initial Support Intrusion Section of Highway Tunnel

以某高速公路在建隧道初期支护侵限段为工程背景,通过增设临时竖向及斜向支撑、增设超前中管棚、增设锁脚锚管等措施,为换拱段提供支护与预加固,保证了换拱能够安全顺利进行,以期对类似的工程提供参考。

Selecting initial support intrusion section of a highway tunnel during the construction as the engineering background,through taking measures,such as adding temporary vertical and oblique support,adding leading pipe shed and anchor pipe,to provide support and pre-reinforcement for arch replacement section,and ensure that arch replacement can be carried out safely and smoothly,so as to provide reference for similar projects.