Rock Fall Protection Netting - Slope Rock Fall Barrier Systems India

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Geosynthetics & Civil InfrastructureSlope ProtectionIS 4759 Galvanised

Auroguard supplies rock fall protection systems including double-twist hexagonal wire mesh for drape/containment netting, ring-net barrier systems, and anchored wire-rope barrier fences. Drape netting is installed over rock slopes to guide debris to a catchment trench at the road toe. Barrier systems are anchored to the slope above the hazard zone and absorb the kinetic energy of falling rocks using brake elements. Applications include highway and railway cut slope protection in Jharkhand, Odisha and Bihar, quarry boundary protection, infrastructure protection in hilly terrain, and coastal cliff protection. All wire mesh is galvanised to IS 4759 / ASTM A123 with optional PVC coating for high-humidity coastal environments.

Technical Specifications

ParameterSpecification
Mesh TypeDouble-twist hexagonal (8×10 / 10×12cm)
Wire Diameter2.7mm / 3.0mm / 3.4mm
Wire Tensile Strength350–500 N/mm²
CoatingGalvanised IS 4759 / ASTM A123; PVC option
Panel Width2.0m / 3.0m standard
Barrier Energy Absorption100 kJ – 5,000 kJ (ring-net systems)
Anchor Bolts25mm dia grouted rock anchors, length per design
StandardIS 4759, ASTM A975, EOTA ETAG 027

Frequently Asked Questions

What types of rock fall protection netting are used for highways?
Two main types: (1) Drape/containment netting — double-twist hexagonal wire mesh draped over slopes to channel debris to the toe; (2) Barrier systems — anchored ring-net or wire-rope fence barriers to intercept and absorb falling rock energy (100–5000 kJ).
What is double-twist hexagonal mesh used for in slope protection?
Double-twist hexagonal mesh is used for drape and containment netting on rock slopes. The double-twist construction prevents unravelling even if individual wires are cut. Galvanised or PVC-coated wire provides corrosion resistance in humid environments.
What energy absorption ratings are available for rock fall barriers?
Auroguard supplies rock fall barrier systems with energy absorption ratings from 100 kJ (low-hazard slopes) to 5000 kJ (high-hazard mountain highway cuttings). The energy level is selected by a geotechnical engineer based on rock mass, slope angle, fall height, and block size.
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