High-friction geo-textiles for increasing the stability of landfill drainage layers and other high-friction angle installations, and related methods

Abstract

The present invention relates generally to geo-textiles having an increased resistance to the negative effects of shear forces in installations or layered structures which can be adapted and arranged to utilize geo-textiles. Geo-textiles of the invention comprise at least one high-friction compound, such as one or more high-friction polymers, and methods for making and utilizing them. The high-friction characteristics of components of the invention provide increased resistance to the negative effects of shear forces in layered installations which employ them. Geo-textiles of the invention may have one or more high-friction compounds provided on either or both surfaces. Geo-textiles according to the invention are particularly useful in sloped installations where at least a portion of the layered structure is at a slope angle of greater than 4 degrees, and can be interposed between one or more of geo-membranes, geo-grids, geo-cells, geocomposite laminates and conventional geo-textiles.

Description

FIELD OF THE INVENTION [0001] The present invention relates generally to woven and non-woven geo-textiles which comprise high-friction components, such as polymers, on one or both of their surfaces, and methods for making and utilizing such high-friction geo-textiles. Geo-textiles of the invention provide increased resistance to the negative effects of shear forces in layered installations which employ them, such as those comprising geo-membranes, geo-nets, void-maintaining geo-composite core elements and other layered geo-composite structures. Moreover, the present invention provides means and methods for decreasing the destructive effects of shear forces on layered temporary covers used in landfills and the like. [0002] The high-friction characteristics of the many embodiments of the invention provide engineers and designers with the ability to design, plan and build installations having sloping portions of steeper angles than those achievable without the present invention. Thus, ...

AI Technical Summary

Benefits of technology

[0007] It is therefore an object of the invention to provide woven and non-woven geo-textiles comprising high-friction compounds on one or both surfaces which provide an increased resistance to shear forces between the geo-textiles and one or more adjacent surfaces, such as one or more of geo-membranes, geo-nets and geo-grid.

Problems solved by technology

Water is the principal cause of distress in many types of structures.

A typical problem with conventional geo-textiles, geo-composites, geo-nets, geo-grids and methods for their use are numerous.

Such shear forces tend to disrupt the relative positions of the various layers thus causing a partial or complete failure of the drainage system because, for example, intrusion of the outer layers into the void spaces.