交通–电力共建隧道横通道与检修道交叉段围岩稳定性研究

Study on Surrounding Rock Stability of Cross Section of Traffic-Electric Co-Construction Tunnel of Cross Section and Overhaul Road

结合重庆同茂大道金竹湾隧道与电力隧道共建工程,以共建隧道人行横通道与电力隧道检修道交叉段为研究对象,建立三维有限元模型,通过人行横通道与电力隧道检修道交叉段施工过程的有限元模拟,分析了交叉段围岩的位移、应力、塑性区特征及检修道和人行道的开挖对隧道围岩的影响范围,为隧道支护设计提供了依据。

Combining with the Jinzhuwan Tunnel and the power tunnel co-construction project of Tongmao Avenue in Chongqing,the intersection of the crosswalk of the tunnel and the overhaul of the power tunnel is taken as the research object,and a three-dimensional finite element model is established,which passes through the cross section of the pedestrian crossing and the power tunnel.The finite element analysis of the construction process analyzes the displacement,stress,plastic zone characteristics of the surrounding rock and the influence of the overhaul and the sidewalk on the surrounding rock of the tunnel,which provides a basis for the tunnel support design.