ROCKFALL DEFENCES

AVALON HAS AN ENVIABLE REPUTATION AND TRACK RECORD IN NEW ZEALAND AND BEYOND. OUR KEY STAFF HAVE BEEN INVOLVED IN ROCKFALL, SLOPE STABILISATION AND SLOPE REMEDIATION IN DIFFICULT ACCESS LOCATIONS SINCE THE LATE 1980'S.

We apply a combination of engineering knowledge and site experience to deliver practical solutions when installing proprietary and purpose built rockfall defenses.

HIGH ENERGY BARRIERS

We install barrier systems flexible enough to cover a wide energy absorption spectrum, arresting up to 5 tonne boulders traveling at 34km/hr..

Wire rope panels

Dynamically and statically tested

CE European Certified; energy absorbing splices

250 to 3,000kJ energy absorption capacity

CATCH FENCES

Lower angle slopes with relatively low energy rockfalls and locations with run-out don’t always justify the cost of imported high-energy barriers. AVALON can engineer, supply and install cost effective purpose built site-specific solutions to suit your budget.


DRAPED REINFORCED MESH

To deal with higher energy rockfall AVALON can offer reinforced mesh solutions. These can be used in combination to provide total coverage.

Mono-reinforced mesh

Bi-reinforced mesh

High energy wire rope panels

DRAPED DOUBLE TWIST MESH

Draped mesh is one of the simplest means of mitigating rockfall hazards; the mesh curtain safely guides rockfall to the toe of the slope. Installations are designed for easy debris removal and can handle debris build up with a safety margin in mind.

  • Installation is rapid and cost effective.

    • DOUBLE TWIST MESH is available with a PVC and zincalume coating, giving it the highest durability of any mesh on the market.

    The deformation characteristic of the mesh absorbs energy, minimising anchor loading and localising any damage. Double twist construction ensures that the failure of one strand does not compromise the panel (as is the case with single twist).

    We generally recommend the installation of double twist mesh on slope stabilisation and rockfall defence projects for safety and durability reasons.