For the Guanshui Road Station tunnel project of Guiyang Metro Line 2, the wind pavilion group was moved out of the main tunnel to reduce the number of openings in the main tunnel, and the wind pavilion group was excavated in a triangular configuration at the entrance of the main tunnel. Based on the finite element software ABAQUS, a three-dimensional model is established to study the influence of different triangular-distribution tunnels excavation schemes on the surface settlement and tunnel stability. The objective of this study is to reveal the change rules of surface settlement, deformation and force in the support structures and the surrounding rock and identify the best excavation scheme for this tunnel configuration. Results show that to control the surface settlement and the deformation of the support structures, the optimal excavation sequence involves excavating the upper fresh air exhaust tunnel before the lower running tunnel. To control the stress of the support structures, the optimal excavation involves excavating the lower running tunnel before the upper fresh air exhaust tunnel. In this project, the most reasonable excavation sequence of the tunnel is from top to bottom. The most reasonable thickness of tunnel penetration is 5 m.

对于贵阳地铁2号线的关水路站隧道工程，将风亭组从主隧道中移出以减少主隧道的开口数量，并在入口处以三角形构型开挖风亭组。主隧道。基于有限元软件ABAQUS，建立了三维模型，研究了不同三角形分布隧道开挖方案对地表沉降和隧道稳定性的影响。这项研究的目的是揭示支撑结构和围岩中地表沉降，变形和力的变化规律，并确定该隧道构型的最佳开挖方案。结果表明，为了控制支撑结构的表面沉降和变形，最佳开挖顺序包括在下部运行隧道之前开挖上部新鲜空气排放隧道。为了控制支撑结构的应力，最佳开挖包括在上部新鲜空气排出隧道之前开挖下部运行隧道。在该项目中，隧道最合理的开挖顺序是从上至下。隧道穿入的最合理厚度为5 m。