slope stability analysis
slope stability analysis
(OP)
Hello
Quick question about slope stability in clayey soils , i was wondering what you guys usually conduct in terms of stability analysis
do you study the stability using deterministic values fixed in time ( undrained strength that is ) , or do you take into account the decrease of undrained shear strength vs water content which is known to be the case
Quick question about slope stability in clayey soils , i was wondering what you guys usually conduct in terms of stability analysis
do you study the stability using deterministic values fixed in time ( undrained strength that is ) , or do you take into account the decrease of undrained shear strength vs water content which is known to be the case
RE: slope stability analysis
For the anchored walls, usually drained parameters become critical
But i never considered the reduction of strenght parameters due to water content.
RE: slope stability analysis
RE: slope stability analysis
If water accumulations are believed to be likely with some significant degree of probability, then an appropriate softened value of Su (Cu) should be applied.
If using drained parameters, 8ohi and c') c is usually ignored (=zero) and phi is degraded to a phicv or phi residual by the stark procedure mentioned for example, or assuming phi residual as measured in lab tests (which in some cases may be exceedingly cautious).
All the above unfortunately makes the analyses tricky. Many judiciary procedures are started based on slopes which had to be stable by the book but turned out to be unstable. Oftentimes the cause is shear resistance degradation by water.
www.mccoy.it
RE: slope stability analysis
RE: slope stability analysis
Are there any rules to compute PWP as a function of degree of saturation without the need of conducting a triaxial test ?