Abstract
Slope stability analysis was carried out for an earthfill dam having a sloping core. From the
analysis, it was concluded that the pseudostatic case is critical for this dam. A probability and
sensitivity analysis was carried out for some of the cases to assess probability of failure. The materials
in the zoned embankment were assigned some variation for the probability analysis which showed that
some slip surfaces had a probability of failure which is much greater than an acceptable limit. From
the sensitivity analysis it was concluded that the variation in friction angle of the shell material affects
the factor of safety more than any other material parameter and variation tried. To get a probability
of failure within selected limits the probability analysis was carried out on revised downstream slopes
to see the difference in probability of failure after the slopes are flattened from 1.75H:1V to 2H:1V
and 2.25H:1V.
Khan, F.S., Malik, A.A. (2013) Probability and Sensitivity Analysis of the Slope Stability of Naulong Dam, Pakistan Journal of Engineering and Applied Sciences, Volume 13, Issue 1.
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