高地应力区挤压破碎围岩隧道施工技术探讨

随着采矿、交通、水电工程的发展，许多隧道修建于高地应力区，特别是当穿越挤压破碎围岩时，极易引起隧道及掌子面不稳定，严重影响施工安全与进度。介绍了国外高应力挤压破碎条件的判别方法，对高地应力区挤压破碎围岩隧道开挖支护施工与设计方法及地层预加固技术等进行初步的探讨。

Discussions on Construction Technology of Tunnels in Squeezing and Fractured Ground in High Ground-stress Area

Along with the development of mining works, transportation works and hydropower works, many tunnels are built in high ground stress area. Especially where the tunnel passes through squeezing and fractured ground, instabilities of the tunnel and the working face are subject to occur, which will result in serious impact on the construction safety and construction progress. In the article foreign judging methods on squeezing and fractured ground in high ground stress area are described, and preliminary discussions are made on the design and construction method and ground pre consolidation technologies of tunnels located in squeezing and fractured ground in high ground stress area.