| 饱和-非饱和非稳定渗流作用下岩质边坡稳定性分析 |
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| 引用本文： | 周桂云,李同春.饱和-非饱和非稳定渗流作用下岩质边坡稳定性分析[J].水电能源科学,2006,24(5):79-82. |
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| 作者姓名： | 周桂云 李同春 |
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| 作者单位： | 河海大学,水利水电工程学院,江苏,南京,210098 |
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| 基金项目： | 国家自然科学基金资助项目(90510017) |
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| 摘 要： | 对岩质边坡在水位下降时坡体内的饱和—非饱和非稳定渗流和坡体稳定性进行了分析,渗流分析采用有限元法,坡体稳定分析采用有限元强度折减法。以塑性区位移突变作为边坡失稳判据,此时折减系数值即为坡体安全系数。以十里铺水库为例,对库岸岩体边坡进行了分析,并得出在水库水位降落影响下边坡的稳定安全系数随降落时间的增长而增大的结论。
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| 关 键 词： | 岩质边坡 非饱和 非稳定 渗流 稳定分析 强度折减法 失稳判据 |
| 文章编号： | 1000-7709（2006）05-0079-04 |
| 收稿时间： | 2006-08-29 |
| 修稿时间： | 2006年8月29日 |
Rocky Slope Stability Analysis Taking into Account Saturated-unsaturated Seepage Flow |
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| ZHOU Guiyun,LI Tongchun.Rocky Slope Stability Analysis Taking into Account Saturated-unsaturated Seepage Flow[J].International Journal Hydroelectric Energy,2006,24(5):79-82. |
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| Authors: | ZHOU Guiyun LI Tongchun |
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| Abstract: | The analysis of saturated-unsaturated seepage flow and slope stability to rocky slope in water level depression is performed.FEM is used to analyze the influence of seepage flow and the method of shear strength reduction(SSR) is adopt to calculate the slope stability.This can be making full use of the two methods.The abruptness of the displacement in plastic zone is suggested to be used in the analysis of instability criterion.And the safety factor is obtained,namely the reduction coefficient.Finally an example of the analysis of rocky slope of Shilipu reservoir is given.All results show that the slope is more stable as the time of water level depression is increased. |
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| Keywords: | rocky slope unsaturated unstable seepage stability analysis shear strength reduction(SSR) technique instability criterion |
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