论文部分内容阅读
为保证隧道洞口仰坡在隧道施工下的稳定,必须有足够的安全储备。先采用极限平衡法分析施工对仰坡稳定性的影响;然后在确定台阶法施工前提下,模拟隧道施工对仰坡稳定性的影响,二者结果有较好的一致性。针对某隧道洞口仰坡,用有限元强度折减法模拟了不同隧道开挖跨度和隧道间距对仰坡稳定性的影响,得到该隧道的最佳跨度为15m,最佳间距为24m。
In order to ensure the stability of tunnel entrance under the tunnel construction, there must be sufficient safety reserves. First, using the limit equilibrium method to analyze the effect of construction on the stability of the uphill; and then to determine the impact of the construction of the tunnel on the stability of the slope under the premise of determining the construction of the step method, the two results are in good agreement. The influence of different tunneling span and tunnel spacing on the slope stability is simulated by finite element strength reduction method. The optimum span of the tunnel is 15m and the optimal spacing is 24m.