本文以非饱和土抗剪强度理论为基础，引入了渗透力的概念，利用有限单元法进行了降雨条件下岩质边坡稳定性的分析。
The paper brings the conception of seepage force and use finite element method to analyze rock slope stability under rainfall, based on unsaturated earth drained shear strength theory.
在非饱和土条件下产生的负孔隙水压力（基质吸力）对于预测如边坡、挡土墙、挖方工程、基础工程之类的土石结构的稳定性十分重要。
Unsaturated soil condition which give rise to negative pore pressure is important in evaluating the stability of geotechnical structures such as slopes, retaining walls, excavations and foundations.
为了提高非饱和膨胀土边坡的稳定，采用了土工膜覆盖边坡表面的方法。
In order to improve the stability of unsaturated expansive soil slope, the method of covering the slope by geo-membrane is applied.
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