摘要
介绍了某分岔隧道喇叭口段的现场监测方法,并结合具体施工过程,对现场监测结果进行了分析;通过数值模拟手段分析了隧道各开挖阶段对地表沉降及围岩不同位置的应力和位移的影响。研究结果表明:随着深度增加,围岩逐渐趋于稳定;上覆围岩越薄,地表沉降越大。研究结果可为同类隧道设计、施工提供必要的依据。
The deformation monitoring system of bifurcation tunnel is described in this paper,and combined with construction process,the monitoring result is analyzed. Based on the result of the investigation on dynamic construction numerical value,the influences of the tunnel excavates on the earth＇s surface settlement and the surrounding rocks＇ strain and displacement at different positions are analyzed.It＇s shown that with the increase in depth,rock stratum tends to be steady gradually,as well as the thinner the upper cover of surrounding rock,the greater the earth＇s surface settlement. This study can provide indispensable evidence for design and construction of bifurcation tunnel.
出处
《公路工程》
北大核心
2015年第2期314-317,共4页
Highway Engineering
关键词
分岔隧道
喇叭口段
现场监测
数值模拟
bifurcation tunnel
horn mouth section
site monitoring
numerical simulation
