摘要
结合三峡库区某滑坡的治理工程,利用Slope/W软件将破坏概率分析对滑坡的稳定性进行评价。研究结果表明:基于破坏概率分析的滑坡稳定性评价,可以降低由于抗剪强度参数的随机性、测试的误差、地质体的不均匀性、外界因素变化的随机性等对于滑坡稳定性评价结果的影响,能较为客观地反映岩性的实际分布状况。相比单一稳定性系数评价滑坡稳定性的方法,将滑坡破坏概率与传统的稳定性系数相结合,可较客观地评价滑坡的实际稳定状态。分析结果表明:在滑坡含水饱和+地震条件下,该滑坡处于破坏状态。
The paper combined with the treatment Reservoir to conduct the evaluation of stability of the engineering for certain landslide in the Three Gorges landslide based on failure probability analysis with the Slope/W software. The study result shows that the evaluation herein based on failure probability analysis may reduce the effect of the factors, including stochastic parameter of shear strength, testing error, inhomogeneous geological mass and external factors varied randomly, on the evaluation result, thus could reflect the distribution of actual lithological characters objectively. Compared to the evaluation with single stability coefficient, the combination with landslide＇s failure probability and traditional stability coefficient may give an objective evaluation on actual stability of landslide. Through the analysis, it shows that if the landslide has a water content reaching saturation and is under seismic condition, the landslide will be in the state of failure.
出处
《路基工程》
2014年第3期69-73,共5页
Subgrade Engineering
关键词
破坏概率
滑坡
稳定性评价
数值模拟
failure probability
landslide
stability evaluation
numerical simulation
