边坡稳定的有效应力及超孔隙水压判定法

针对由于超孔隙水压过大或者竖向有效应力偏小导致的边坡失稳问题,进行了边坡稳定判定方法的研究。分析堤身或者坡脚某点的竖向有效应力及超孔隙水压随时间变化的曲线,与传统的圆弧滑动法对比,得出在设计、施工过程中可以通过竖向有效应力及超孔隙水压判定边坡稳定的结论,且竖向有效应力及超孔隙水压判定法可以检测边坡稳定的发展情况。

Determination of slope stability by effective stress and excess pore water pressure

Determination of the slope stability have been carried out aiming at the problem of slope instability caused by excess large pore water pressure or the small vertical effective stress.The curve of vertical effective stress and excess pore water pressure of body or a slope foot point over time is analyzed,compared with traditional arc sliding method.It is concluded that the slope stability can be determined by the vertical effective stress or the excess pore water pressure in the design and construction process,which also can be used to monitor the development of slope stability.