浅埋公路隧道冒顶塌方施工处理技术

Roof-Caving and Collapsing Treating Techniques for Shallow Highway Tunnels

为进一步加快浅埋隧道冒顶塌方处理流程,减少安全隐患,结合某浅埋山岭公路隧道塌方实例,分别从主观和客观两个角度分析了造成冒顶塌方的多方面原因;从应急处理到现场施工两个处理过程,介绍了利用洞内支护与洞外出渣相结合的高效处理方法。结果表明:在此次隧道塌方中采取的处理方法有效可行的解决了隧道塌方事故,使隧道施工安全、高效地穿越了塌方段,保证了隧道顺利贯通。

In order to quicken the roof-caving-and-collapsing-treating process and reduce potential accidents, the various causes of roof-caving and collapsing are analyzed both subjectively and objectively in the paper,with the collapsing accident of a shal- low-buried mountainous highway tunnel as a practical example,upon the basis of which the highly effective treating method of combining the inside-tunnel supporting with the outside-tunnel deslagging is introduced from the two angles of the emergency treatment and the site construction. The result shows that the treating method adopted in the course of dealing with the collap-sing accident of the tunnel effectively helps solve the problem of the collapsing accident of the tunnel, enables the construction of the tunnel securely and efficiently go through the collapsing section,and ensures the smooth threading-through of the tunnel.