Download Slope stability analysis of tailings dam embankments

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Translational sliding
Translational sliding is similar to rotational sliding; however the failure surface is straight
rather than arcuate, as shown in Figure 2.9. It occurs when a weaker soil overlies a stiff
stratum, causing the weaker soil to slide downwards (Sivakugan, 2007).
Stiff stratum
Stiff stratum
Figure 2.9: Translational sliding failure
Figure 2.10: Compound failure
A combination of rotational and translational failure (called a compound failure) occurs when
the slip surface is circular but is intercepted by a stiff stratum causing a straight failure surface
along the interface between strata.
Figure 2.11: Example of translational sliding (Swiss Confederation, 2005)
Translational and compound failure surfaces are known as non-circular failure surfaces.
Methods due to Morgenstern and Price (1965), Spencer (1967), and Janbu (1954) can be used
to calculate factors of safety for non-circular failure surfaces.