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Figure 6. Limit equilibrium model (GeoStudio 2007 – SLOPE/W) with
critical failure surface for the estimated leachate table.
For these conditions, the factor of safety based on finite element
analyses is calculated equal to 0.87, indicative of unstable
conditions.
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shear wave velocity profiles determined by SASW method at:
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.
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Analyses using the limit equilibrium method (Geo-Slope
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for dry conditions and for the assumed leachate table (shown in
Fig. 6). The factor of safety is equal to 1.60 for dry conditions
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The results of the above and additional analyses indicate that
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uncertainties, such as the unit weight of waste material.
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Netherlands.
8 CONCLUSIONS
The waste slide that occurred on December 29
th
2010 has height
of 27 m and width of 30 m and involved a waste mass of 12,000
m
3
. The waste slide engaged MSW material only. On the basis
of the reconnaissance studies, the field measurements and the
stability analyses, the waste failure is attributed to poor landfill
practices (absence of compaction and daily soil cover), the steep
inclination of the waste mass and the increased percolation of
rainfall water in the waste mass (and associated gas pressure
generation) due to the absence of daily soil cover and surface
water management system. The analyses also indicated that
failure would not be incipient under dry conditions.
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and Geotechnical Engineering and 64th Canadian Geotechnical
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, Geo-Innovation Addressing Global Challenges,
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9 ACKNOWLEDGMENTS
The authors would like to thank Mr. D. Sardelianos, Civil
Engineer at the Municipality of Patras for his assistance and
support of the surveying measurements. Special thanks are due
to Dr. P. Pelekis and A. Batilas, M.Sc. Civil Engineers for their
participation and help in performing surface wave
measurements and field data processing.
Zekkos, D., Athanasopoulos, G.A., Bray, J.D., Grizi, A., and
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