Can anyone point me to literature or a case history where the shape of the critical failure surface significantly changed once geotextile reinforcement was added in slope stability models for an embankment on a soft foundation? On a current project the embankment also serves as a levee and the with and without water load conditions result in similar shaped slip surfaces but once reinforcement is added the location and shape of the critical slip surface changes to extend beyond the reinforcement or partly thru the anchorage length. This is somewhat expected but the critical slip surface is significantly different than the original. I would like to find references that discuss the effect of reinforcement on the shape of the slip surface.
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