摘要
为研究隧道开挖对边坡稳定的影响,结合某隧道工程实例,采用有限元方法分析隧道开挖不同深度对边坡稳定的影响。结果表明:距坡顶5~15 m范围内,隧道开挖对边坡扰动不大;15~25 m范围内,边坡的最大位移呈线性递增规律,位移变化量在工程可控制范围内,可认为此范围是隧道埋深的合理位置;靠近坡脚25~30 m范围内,边坡位移量急剧增长,对边坡的稳定性产生了严重的影响;在隧道开挖卸载过程中,受到影响的主要范围是隧道周边和边坡中上部。
In order to study the influence of tunnel excavation on the stability of slope, finite element method was applied to analyze the effect of varying depths of tunnel excavation on the stability of slope as shown in a practical case. The results show that in the range of 5-15 m from the top of the slope, the disturbance by the tunnel excavation barely changes; within the range of 15-25 m, the maximum displacement of the slope increases linearly but remains controllable, which makes this area considered to be a reasonable place for tunnel depth; around 25-30 m near the toe of the slope, the dramatically increased displacement indicates the serious impact on the stability; during unloading process of tunnel excavation, the main affected areas are the perimeter of the tunnel and the upper part of the slope.
出处
《筑路机械与施工机械化》
2018年第2期114-117,共4页
Road Machinery & Construction Mechanization
基金
国家自然科学基金面上项目(41672300)
关键词
隧道
边坡
开挖深度
有限元分析
tunnel
slope
excavation depth
finite element analysis
