摘要
针对彭水隧道出口大垮段所处浅埋、富水和顺层滑坡的地质特点 ,采用弹塑性有限单元法对大跨度隧道的施工方法进行了数值分析 ;同时对浅埋、富水和地质顺层地段分别采用管棚注浆和锚固桩加固的方法进行了处理。实践表明文中所采用的施工方法和处理措施不仅确保了大垮度隧道在不良地质地段的安全施工 ,而且加快了施工进度 ,达到了预期的效果。
According to the geoloical features of the exit portal of Pengshui tunnel with shallow depth,rich ground water and bedding strata,numerical analysis of the construction technique for the large span tunnel is carried out by means of elasto-plastic finite element method in this paper.Meanwhile,the pipe-roof grouting and pile anchoring method have been adopted also to strengthen the bedding strata of the large span tunnel.It has been verified that the method and measures presented in this paper can not only safeguard the driving of the tunnel with adverse geological strata,but also enhance the construction progress as well,and has gained desired effect.
出处
《铁道工程学报》
EI
2002年第3期70-74,共5页
Journal of Railway Engineering Society
关键词
施工技术
大垮度隧道
不良地质
数据分析
管棚
锚固桩
large span tunnel
adverse geology
numerical analysis
pipe-roof protection
pile-anchoring method
