塘朗山隧道出口仰坡稳定性分析与加固

Analysis of Stability of Front Slope at Exit of Tanglangshan Tunnel and Its Reinforcement

由于隧道受洞口立交及其上跨线的影响,使隧道洞口仰坡较高,因此,隧道仰坡的稳定,直接影响隧道进洞和隧道营运安全。介绍塘朗山隧道出口高仰坡在施工过程中变形的原因、仰坡的稳定性分析和采取的加固设计方案。

As influenced by tunnel opening interchange and overpass, the front slope of the tunnel opening is relatively high, therefore the stability of tunnel front slope is directly influencing safety of entering tunnel and in - tunnel driving. This paper introduces reason of deformation of high front slope at exist of Langtangshan tunnel during construction, it analyzes stability of the front slope and adopted reinforcement solution.