双层小导管超前支护在隧道软弱围岩中的运用研究  

作　　者：刘勇 

机构地区：[1]中交一公局第七工程有限公司,河南郑州451450

出　　处：《科技创新与应用》2020年第12期180-181,共2页Technology Innovation and Application

摘　　要：超前小导管为基于新奥法的前提下创新的一种预支护方式,有着施工便捷、施工成本低的优势,并且对设备没有较高的要求,在隧道软弱围岩支护中有着广泛的应用,起到的加固效果非常理想,并且操作简单。因此,文章针对双层小导管超前支护在隧道软弱围岩中的运用做出了进一步分析。The advanced small conduit is an innovative pre-support means based on the NewAustrian TunnelingMethod(NATM),so it has the advantages of convenient construction, low construction cost, and no higher requirements for equipment and is widely used in the support of weak surrounding rock of tunnel. The reinforcement effect is very ideal, and the operation is simple. Therefore,this paper makes a further analysis on the application of double-layer small conduit advance support in the weak surrounding rock of the tunnel.

关 键 词：双层小导管 超前支护 隧道软弱围岩 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]