Model study of sandy slopes under uniform seepage and reinforced with anchored geosynthetics

摘要

ABSTRACT: The stability of soil slopes can be significantly increased as a result of the in situnstabilization technique of anchored geosynthetic systems (AGS). An experimental study wasnperformed on AGS sandy slope models with different cross-sections and subjected to uniformnseepage. The slope models were brought to failure by gradually decreasing the AGS loads. Ancomparative analysis of the failed models in terms of the predicted safety factors and slip surfacenconfigurations were carried out using limit equilibrium and finite element analyses. Goodnagreements were obtained between the experimental and theoretical predictions in terms of thenfailure surface configurations as well as the safety factor at failure. Surface load applications onnhomogenous, granular slopes tend to change the failure mode from a planar slide assumed by theninfinite slope theory to a more rotational sliding.