Abstract
The safety factor of an experiment slope is discussed herein with regards to the rise and drawdown of reservoir water level.
The time-dependent saturated-unsaturated seepage problem was analyzed by finite element method. and solutions thus obtained were compared with the pore pressure observed in the experiment slope.
Conclusions reached are as follows.
(1) The pore pressure distributions as calulated by the F. E. M. agree with the experimental results. (see fig. 8, fig. 9)
(2) The safety factor of the slope has a minimum value both at the rising and drawdown stages of the reservoir water level, the minimum value at the drawdown stage being smaller than the one at the rising. (see fig. 15)
(3) Noteworthy is that the saturation of the toe of sliding mass at the rising stage of water level is likely to trigger a total collaspe of the sliding mass.
