隧道洞身滑坡稳定性分析及处治措施

Analysis and Prevention Method of Landslide Stability at Tunnel Middle Segment

由于工程地质条件及水文地质条件等因素的影响,滑坡段隧道建设存在诸多困难。本文以竹林坪隧道为背景,采用系数传递法和FLAC数值分析方法分析了隧道施工对滑坡稳定性的影响。结果表明隧道开挖将会造成滑坡失稳,隧道自身的稳定也无法保证,因此提出了滑坡加固措施及隧道设计方案,取得了良好的效果,可供类似工程参考和借鉴。

Many difficulties exist in tunnel construction due to the effect of engineering geological condition and hydrogeological condition. The Zhulinping tunnel in Chongqing is taken as a typical example and analyzed by using coefficient transfer method and FLAC numerical analysis , the result indicates that if the tunnel is excavated without reinforcement, the slop will not be steady. The reinforcement measures based on the result is proposed. This study can offer a reference for similar engineering.