The reservoir water level fluctuation is an important factor inducing the reaction of pore-water pressure, seepage and at last resulting in instability and failure of the slope. A typical homogeneous slope is conducted as an example in this paper, the seepage and stress coupling effect is considered, and the slope stability calculation and analysis are carried out by using the finite element stress method. The results demonstrate that the factor of safety increases with the reservoir water level rises, and then gradually changes from decrease to stabilization. It should be noted that the factor of safety decreases slightly during the initial stage of water level rising at the speed of 0.2 m/d, which the slope will probably lose its stability. On the other, the factor of safety changes from decrease to increase along with the reservoir water level drawdown, and then gradually tends to stabilization. There is a minimum factor of safety when the water level is at about 1/4 of the slope height, and the minimum factor of safety decreases with increasing drawdown speed, just as the factor of safety decreases from 0.83 to 0.73 when the drawdown speed is increased from 0.20 m/d to 5.0 m/d.
展开▼
机译：储层水位波动是诱导孔隙水压力，渗流的反应，渗流和最后导致斜坡的不稳定性和失效的重要因素。在本文中，作为示例进行典型的均匀斜率，考虑渗漏和应力耦合效果，并且通过使用有限元应力法进行斜率稳定性计算和分析。结果表明，安全性因子随储层水位上升而增加，然后逐渐从减少到稳定变化。应该注意的是，在水位的初始阶段以0.2米/天的速度上升的初期，安全性因子略微降低，斜坡可能失去其稳定性。另一方面，安全性因因素与水平水位绘制的减少增加，然后逐渐趋于稳定。当水位在斜坡高度的约1/4处时，存在最小的安全系数，并且随着抽取速度的增加因子，安全性的最小因素降低，随着拉伸速度的0.83至0.73，安全因子从0.83到0.73减小从0.20 m / d增加到5.0 m / d。
展开▼
