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Stabilization of landslides

To restore a failed slope, the soil is often substituted with a different type of soil with superior geotechnical properties, significantly increasing material procurement costs and the environmental impact. In these cases, the use of TENAX TT SAMP geogrids allows the reconstruction of the slope by taking advantage of the on-site soil and assures a steep vegetated face. In this way the environmental impact is minimized and the reinforced slope is reintroduced back into its natural state without causing a negative environmental impact.
To restore a landslide, it is necessary to remove the collapsed soil, to grade the backfill slope and compact the foundation and to reconstruct the slope in layers of well compacted soil and geogrids. Overall the slope can be more easily and much more rapidly restored since there are no foundations requiring excavation, no concrete formwork to set up, no reinforcement steel bars to align, and no time lost waiting for the cement to cure.
The inclusion of TENAX TT SAMP geogrid layers will intersect the failure slip circle and impede the progressive sliding and deterioration of the rebuilt slope. Of extreme importance is the fact that a geogrid/reinforced slope has an intrinsic seismic resistance. Due to its superior elasto-plastic characteristics and to the damping effects conferred to the soil by the geogrids, the reinforced slope is not subject to failure during earthquakes, even when of considerable magnitude.

 
Installation of geojute and TENAX TT geogrids
Installation of geojute and TENAX TT geogrids
  Hydroseeding of completed embankment
Hydroseeding of completed embankment
 
View of installation from the valley
View of installation from the valley
  installation nearing completion
Installation nearing completion
SCHEMATIC EXAMPLE
 
PRODUCTS
TENAX TT SAMP
TENAX RIVEL
 
CASE HISTORIES
Landslide consolidation in Boscaccia Sondrio, Italy
Consolidation of a failed slope, Fiuggi, Italy
 
TECHNICAL DOCUMENTS
TDR001: Design Manual: Steep reinforced slopes, 1994 (kb 204)
TENAX International B.V. • Geosynthetics Division
Via Ferruccio Pelli, 14 CH-6900 Lugano, Switzerland • Tel +41+91.9242485 • Fax +41+91.9242489

geo@tenax.net

TENAX SpA - Geosynthetics Technical Office (GTO)
Viale Monza, 1- 20125 Milano (MI), Italy • Tel. +39 02.26113532 • Fax +39 02.28971107

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TENAX SpA • Divisione Geosintetici
Via dell'Industria, 3 • I-23897 Viganò (LC), Italia • Tel +39 039.9219307 • Fax +39 039.9219200

geo@tenax.net

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