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根据茨哈峡水电站右岸泄洪雾化影响区岩质高边坡发育的地质环境及其变形破坏特征,分析了高边坡潜在的4种可能变形破坏模式。通过分段建模,改变材料参数的形式而维持原几何模型不变的方法来模拟四种破坏模式。计算初始工况、加固处理工况、加固处理后泄水雾化工况等情况下的应力场和塑性区,并结合有限元强度折减法对高边坡的稳定性进行了分析,得出破坏模式四最为危险。最后,通过对计算结果的分析,给出了相关的结论及建议。
According to the geological environment and the deformation and failure characteristics of rocky high slope in the right bank of Cihaxia Hydropower Station, four potential deformation failure modes of high slope are analyzed. By segment modeling, changing the form of material parameters while maintaining the original geometric model invariant to simulate the four failure modes. The stress field and plastic zone under initial condition, reinforcement condition, drainage and atomization condition after consolidation treatment are calculated, and the stability of high slope is analyzed by FEM strength reduction method. Mode four is the most dangerous. Finally, through the analysis of the calculation results, the relevant conclusions and suggestions are given.