| 降雨条件下边坡入渗及稳定性分析 |
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| 引用本文： | 赵磊,;刘晓红.降雨条件下边坡入渗及稳定性分析[J].建筑技术开发,2009(8):34-36. |
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| 作者姓名： | 赵磊 ;刘晓红 |
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| 作者单位： | [1]新乡学院,河南新乡453000; [2]洛阳理工学院,河南洛阳471023 |
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| 摘 要： | 使用SWMS_2D模拟了降雨人渗条件下边坡含水量分布的变化过程，并将非饱和土体强度理论应用到强度折减法中，利用基于FLAC^2D的强度折减法对边坡稳定性进行了分析计算。以某公路边坡为例，模拟了不同时刻降雨人渗条件下的含水量分布，采用基于FLAC^2D的强度折减法进行计算，结果显示：降雨过程中边坡内土体含水量上升，非饱和土基质吸力减小，孔隙水压力值上升，边坡稳定安全系数明显降低，降雨结束1500min（25h）后边坡安全系数达最小为1．09。
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| 关 键 词： | SWMS_2D模型 FLAC^2D强度折减法 降雨入渗 边坡稳定 |
ANALYSIS OF SLOPE STABILITY DUE TO THE RAINFALL INFILTRATION |
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| Affiliation: | Zhao Lei, Liu Xiao-hong |
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| Abstract: | The process of water distribution in slope is researched with the SWMS_2D model. The strength reduction of FLAC^2D, which is based on unsaturated soil shear strength theory, is used to analysis slope stability. An example of a slope of road is simulated. The results showed that for a given rainfall, the soil moisture content and the pore water pressure increase with the decrease in the suction pressure of the unsaturated soils. The results also showed that the slope safety factor decrease. In the simulation carried out, the safety factor dropped to the minimum of 1.09 in 25 hours after rainfall. |
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| Keywords: | SWMS_2D model strength reduction FLAC^2D rainfall infiltration slope stability |
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