南岛河隧道施工的动态模拟

Dynamic Simulation on Construction of Nandaohe Tunnel

利用ANSYS软件建立平面弹塑性模型及三维线弹性模型对南岛河双连拱隧道的施工过程进行模拟,分析了围岩和支护结构的受力与变形变化规律,并分析了双连拱隧道施工过程中开挖面的空间变化规律、左右洞施工的相互影响关系以及中隔墙的变形和稳定性,为软岩双连拱隧道的设计与施工提供依据。

With ANSYS software, plane elastoplastic model and three-dimensional linear elastic model are established to simulate the construction process of Nandaohe double-arch tunnel in this paper. Then it analyzes the stress and distortion change rules of surrounding rock and supporting structure, as well as analyzes the spatial change rules of excavated surface during the construction herein, the interaction between the construction of right and left tunnels and deformation and stability of the mid-partition wall, all of which provide scientific basis to design and construction of soft rock double-arch tunnel.