摘要
文章以兰渝铁路玄真观隧道出现异常开裂为例,从隧道结构、支护措施、施工情况、地层特性,以及高地应力等方面系统查找病害原因;通过补充勘探与数值分析相结合,对砂泥岩地层中隧道衬砌的开裂原因进行了定性与定量分析,最终查出高地应力和岩体强度较低引起的围岩挤压性是衬砌开裂的主要原因,并提出了针对性的病害处理原则。
Using the abnormal cracking in the Xuanzhenguan tunnel on the Lanzhou-Chongqing railway as case study, this paper seeks the causes of the cracking by examining the tunnel structure, support measures, construction situations, ground properties, high geostress, etc. A qualitative and quantitative analysis, with a combination of sup- plementary exploration and numerical analysis, was conducted in order to understand the main causes of the tunnel lining cracking in the sandy mudstone. As a result, high geostress was proven to be the main cause, and treatment principles a
出处
《现代隧道技术》
EI
北大核心
2013年第4期170-175,共6页
Modern Tunnelling Technology
关键词
铁路隧道
衬砌开裂
高地应力
挤压性围岩
数值模拟
re given accordingly. Railway tunnel
Lining cracking
High geo-stress
Squeezing rock
Numerical analysis
