摘要
以某在建高速公路特长隧道软弱围岩侵限段为工程背景,分析了其变形机理。在其基础上,择优选择了"围岩注浆加固"的侵限处治方案,同时辅以数值模拟计算分析处治后二次衬砌的变形及受力情况。现场施工过程中,通过对隧道二次衬砌拱顶下沉、净空收敛的监测,进一步验证了该路段的安全及稳定。
Based on the study of a certain type limit invading soft soil tunnel section of an expressway, in this passage, the deformation mechanism has been analyzed. Such methods as surrounding rock grouting reinforce- ment and overall pressed profile arch have been applied to the limit invading section design, at the same time, numerical analysis has been conducted to study the deformation and internal force of the lining. Through the mo- nitoring of vault sink and clearance convergence in the course of tunnel construction, the safety and stablization of the lining have been verified. The treatment measures for the deformation limit invading section of the tunnel could provide some references for the construction of similar projects.
出处
《广东公路交通》
2015年第3期48-52,共5页
Guangdong Highway Communications
关键词
隧道工程
侵限
整体下压
数值计算
监控量测
tunnel engineering
invading deformation
overall pressed
numerical analysis
monitoring and measurement
