论文部分内容阅读
近水平软弱岩层隧道施工一直是隧道工程研究领域的一个热点问题,本文以广南高速公路栾家岩隧道Ⅴ级围岩条件为例,采用三维有限元模型对隧道台阶法施工进行了数值模拟研究。通过对隧道施工过程中的变形及受力状态的详细分析,得出了隧道内各监控点随隧道施工过程的位移变化规律,揭示了隧道初衬及二衬的最终受力状态,并提出了相应的建议和治理措施。
The tunnel construction in near-horizontal soft rock is always a hot issue in the field of tunnel engineering. In this paper, taking the Grade V surrounding rock of the Luanjiayan Tunnel of Guangnan Expressway as an example, the numerical simulation of tunnel step method is carried out by using the three-dimensional finite element model. Through the detailed analysis of the deformation and stress state of the tunnel construction process, the displacement of each monitoring point in the tunnel with the tunnel construction process was obtained. The final stress state of the tunnel lining and the lining was revealed. Corresponding advice and management measures.