68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference

NUMERICAL ANALYSIS OF A STABILIZED NATURAL SLOPE

Session: Landslides and Slope Stability I / Mouvements de terrain et stabilité des pentes I

Xinli Wu, University of New Brunswick (Canada)
Hany El Naggar, Dalhousie University (Canada)
A.J. Valsangkar, University of New Brunswick (Canada)

Marginally stable slopes coupled with heavy rainfall represent a common challenge to rapid urban development in hilly terrain. These conditions lead to landslides that can be disastrous causing significant damage to nearby properties and loss of lives. In this paper, the stabilization of a 60 m high natural slope is analyzed using finite element and limit equilibrium methods. The contribution of the post-tensioned ground anchors and face plates used for slope stabilization is considered in the analysis. The strength reduction finite element analysis was able to capture the behavior of the slope before the stabilization and its performance after stabilization. The factors of safety obtained with two different approaches are compared and discussed in this paper.