Barton经验公式在岩质边坡稳定性分析中的应用

Application of Barton's Empirical Formula to Stability Analysis for Rock Slopes

由于岩质边坡的失稳几乎都是沿着结构面发生的 ,而岩体结构面的抗剪性能并不完全满足莫尔 -库仑准则 ,因此在岩质边坡的稳定性分析中采用莫尔 -库仑准则会带来较大误差。本文用 Barton经验公式代替莫尔 -库仑准则进行岩质边坡的极限平衡稳定性分析 ,以更好地反映岩体结构面的抗剪性能 ,并通过简单算例阐明了莫尔 -库仑公式及 Barton经验公式在岩质边坡稳定性分析中的差异。

Since the stability failure of rock slops happens almost along joints, while the shearing characteristic of joints does not fully accord with Mohr Coulomb's criteria, using Mohr Coulomb criteria in stability analysis for rock slopes will result in large error. This paper replaces Mohr Coulomb's criteria with Barton's empirical formula in limit equilibrium analysis for rock slopes in order to show properly the shearing characteristic of joints, and illustrates the difference between using of Mohr Coulomb's criteria and Barton's empirical formula in stability analysis for rock slops with a simple example.