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为探讨裂隙对红粘土路堤边坡渗流稳定的影响规律,采用非饱和湿热耦合有限元分析方法,模拟了9种裂隙工况下边坡瞬态水分迁移过程,并基于非饱和强度理论耦合计算了边坡稳定性。分析得出,裂隙的存在明显加深了边坡降水影响深度,考虑裂隙工况下降水影响深度为裂隙埋深加上气候影响深度,裂隙间距对湿度影响深度贡献小,它主要控制着降水早期边坡水分迁移,裂隙埋深是影响边坡渗流和稳定的主要因子,裂隙埋深小于1.0m时裂隙对边坡稳定性影响不敏感,而裂隙埋深达到2.0m以上时影响十分显著。
In order to investigate the influence of cracks on the seepage stability of red clay embankment, the transient water migration process was simulated by using unsaturated coupled wet-heat finite element method. The transient water migration process was simulated based on the theory of unsaturated strength. Slope stability. The analysis shows that the existence of fissures significantly deepens the influence of rainfall on the slope. Considering the influence of precipitation on the fissures, the influence of the depth of the fissures on the depth of the climate and the contribution of the fissure spacing to the depth of the moisture are small. Slope water migration and fracturing depth are the main factors affecting slope seepage and stability. The fractures are not sensitive to slope stability when the fractures depth is less than 1.0m, but the impact is significant when the fractures depth is more than 2.0m.