摘要
为了解决山岭公路隧道进洞施工中的绿色环保问题,以工程实例为研究背景,介绍了隧道洞口处前置支护的施工过程,模拟了洞口处围岩的力学行为,分析了洞口段围岩和前置支护结构的位移场分布规律,结合了洞口段现场施工时的动态监控量测.研究结果表明:利用前置式洞口法处理山岭隧道洞口浅埋的工况时,洞口施工槽两侧及仰坡处的水平方向位移均不超过5mm,前置支护措施能提高隧道洞口处土体的整体稳定性.
For the green environmental protection in construction of mountain highway tunnel entrance , taking the engineering example as the research background ,the construction process of tunnel entrance in front support is introduced ,the mechanical behavior of surrounding rock is simulated ,and the entrance surrounding rock and the displacement field distribution of the front support structure are analyzed based on the dynamic monitoring of site construction .The results show ：When advanced entrance construction method is adopted to deal with mountain tunnel with conditions of the shallow cave ,the horizontal displacements of both sides of construction slot and the up slope are no more than 5 mm ;Front support measures can improve the overall stability of tunnel entrance soil .
出处
《西安工业大学学报》
CAS
2014年第6期470-475,共6页
Journal of Xi’an Technological University
关键词
隧道洞口
前置式洞口法
施工监测
数值分析
tunnel entrance
front entrance method
construction monitoring
numerical analysis
