Shear Resistant Geomembrane Using Mechanical Engagement
AssigneeWatershed Geosynthetics LLC
InventorsWilliam Delaney Lewis, Zehong Yuan, Jose L. Urrutia
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Abstract
An elongated polymeric impermeable geomembrane sheet having opposing first and second surfaces with a plurality of spaced-apart first projections extending from the first surface, said first projections each tapering to a pointed apex at a distal extent, which first projections for mechanically engaging a synthetic drainage geomesh sheet overlaid by a tufted geotextile sheet and in contact with adjacent fill materials within the aggregation, whereby the aggregation has increased resistance to shear failure of the aggregation of fill materials and reducing stabilization failures of materials aggregation applications. A ground covering closure system is disclosed.
Claims23
A geomembrane for use in resisting shear loading in materials aggregation applications and in reducing stabilization failures of materials aggregation applications, comprising:
- an elongated polymeric impermeable sheet having opposing first and second surfaces;
- a plurality of spaced-apart first projections extending from the first surface;
- the first projections tapering to a pointed apex at a distal extent and the first projections tilted at an oblique angle relative to a perpendicular from the apex to the first surface, which first projections for mechanically engaging a respective geotextile sheet in contact with adjacent fill materials within the aggregation;
- whereby the aggregation has increased resistant to shear failure of the aggregation of fill materials.
A ground cover system for a covering closure of a land site, comprising:
- an elongated polymeric impermeable sheet having opposing first and second surfaces, for overlying a ground surface to be closed;
- a plurality of spaced-apart first projections extending from the first surface, each said first projections tapering to a respective pointed apex at a distal extent;
- and
- a covering for overlying the first surface of the elongated polymeric impermeable sheet,
- which first projections for mechanically engaging the covering,
- whereby the aggregation has increased resistance to shear failure of the aggregation of fill materials for reducing stabilization failures of materials in aggregation land sites.
An aggregation cover system for a covering closure, comprising:
- a liner sheet having opposing first and second surfaces, for overlying an aggregation surface to be closed;
- a plurality of spaced-apart spikes extending from the first surface, each said first projections tapering to a respective pointed apex at a distal extent;
- and
- a tufted geosynthetic of a backing sheet tufted with yarns to define a plurality of spaced-apart tufts of synthetic grass blades extending from the backing sheet as a covering for overlying the first surface of the liner sheet, whereby said spikes for mechanically engaging the backing sheet to resist movement of the tufted geosynthetic during shear loading while the tufted geosynthetic frictionally engages the aggregation surface,
- whereby the aggregation has increased resistance to shear failure of the aggregation of fill materials for reducing stabilization failures of materials in aggregation land sites.
Dependencies are inferred from the claim text.