川藏公路二郎山隧道出口位于和平沟左侧崩坡积层内 ,本段隧道存在严重偏压 ,且属浅埋 ,施工中由于路线左侧山坡坡脚土体开挖形成临空面 ,加之其它工程施工及地下水等因素影响 ,造成坡体失稳、地表开裂、隧道变形。为彻底根治滑坡 ,左侧坡脚设计了抗滑挡土墙 ,墙背与山坡之间进行反压回填 ,洞顶以上边坡设置预应力锚索等综合整治措施 ,同时建议加强地面排水系统。该文对坡体稳定性进行了计算分析 ,并对整治工程进行了论述。 The exit of Sichuan-Tibet Highway Erlang Mountain Tunnel is located in the slope collapse deposit on the left side of Heping Gully. The tunnel has serious biased pressure and is shallowly buried. Due to the excavation of the soil at the foot of the hillside on the left side of the route, Other construction and groundwater and other factors, resulting in slope instability, surface cracking, tunnel deformation. In order to completely cure the landslide, the anti-slip retaining wall is designed on the left foot, the backfill between the back and the hillside, the pre-stressed anchor cables and other measures are provided above the top of the tunnel, meanwhile, it is suggested to strengthen the surface drainage system. This article has carried on the calculation analysis to the slope stability, and has carried on the discussion to the remediation project.