摘要
文章以某超大断面交通隧道洞口段超大型塌方冒顶处理为工程背景,以现场试验及监控量测为手段,利用改进的自进式中空锚杆代替小导管,解决了在碎块状—巨块状架空塌碴体中成孔难的问题。通过确定合理的支护参数、注浆量和相应的施工方法,成功地处理了隧道塌方。
Using the treatment of a chimney collapse at the portal section of a tunnel with an extra-large section as an example, and based on a field test as well as monitoring and measuring, this paper successfully solves the problem of drilling holes in an overhead fragmental/massive collapsed body by replacing the condulet with a self-drilling hollow anchor bolt and deals with the collapse based on proper support parameters, grouting volume and relevant construction methods.
出处
《现代隧道技术》
EI
CSCD
北大核心
2016年第4期148-153,171,共7页
Modern Tunnelling Technology
关键词
超大断面隧道
塌方冒顶
自进式锚杆
现场试验
监控量测
Tunnel with extra-large section
Chimney collapse
Self-drilling anchor bolt
Field test
Monitoringand measuring
