Your single point of reference for all your Geotechnical Inquiries
ANALYSIS OF FIELD PERFORMANCE OF LANDSLIDE REPAIR USING A PILE WALL (2009)
A histrorically slopw moving embankment fill landslide on Secondary Highway 682:02 accelerated to failure in the spring of 2007. The landslide was translational with the failure plane cocated between 4.5 and 6.5m depth within native lacustrine clay. The stabilization repari method selected was a pile wall that consisted of 67 cast in place reinforced concrete piles spaced at 1.5m on centere. Field performance of the pile wall after completion of construction was veriffied using two slope inclinometers that were embedded in two of the concrete piles. Post construction deformations were within the range suggested ruing the design. Analysis of the construction deformations using FLAC provided insight into the selection of material properties, especially soil stiffness moduli, for the future design of pile walls used for landslide stabilization.
EBA Engineering Consultants