Passive Slope Protection Mesh

Passive Slope Protection Mesh is a rockfall barrier system installed at the slope toe, road side, or across a known rockfall path. It is used to intercept falling stones after they separate from the slope surface. A complete system normally includes steel posts, ring net or wire rope net panels, upper and lower support ropes, anchors, base plates, brake devices, and connection hardware. It is different from active slope mesh, which lies close to the slope face. For Passive Slope Protection Mesh, the barrier height, energy rating, post spacing, anchor type, and foundation details should be confirmed from the rockfall design report before production.

Specifications

System Type: Passive rockfall barrier system for slope toe or rockfall path installation.

Main Mesh: Ring net panel, steel wire rope net, or rope net with secondary double-twisted mesh.

Energy Rating: Common project ratings include 250kJ, 500kJ, 750kJ, 1000kJ, 1500kJ, and 2000kJ. Higher ratings are made by tested system design.

Barrier Height: Common heights are 2m, 3m, 4m, 5m, and 6m.

Post Type: Hot-dip galvanized steel post, H-section post, I-section post, or steel pipe post according to barrier design.

Post Spacing: Usually 5m to 10m. Final spacing depends on energy class, height, terrain, and drawing.

Support Rope Diameter: Common diameters are 12mm, 14mm, 16mm, 18mm, and 20mm.

Wire Rope Net Diameter: 8mm and 10mm galvanized steel wire rope are commonly used.

Ring Net Structure: Ring diameter and wire bundle count depend on the tested energy class.

Secondary Mesh: Double-twisted hexagonal mesh or chain link mesh can be added to retain smaller stones.

Surface Treatment: Hot-dip galvanized steel is common. Zinc-aluminum alloy coating can be used for higher corrosion exposure.

Energy Dissipating Device: Brake rings, friction brakes, or deformation elements are selected by system design.

Anchors: Rock anchors, cable anchors, ground anchors, or concrete foundation anchors are used according to site condition.

Accessories: Shackles, wire rope clips, U-bolts, base plates, anchor plates, sewing rope, and connection rings.

Application

Mountain Road Protection

Passive Slope Protection Mesh is installed along road cuts and mountain highways where falling rocks may reach traffic lanes.

Railway and Tunnel Areas

Used near railway slopes, tunnel portals, bridge approaches, and cut slopes with visible rockfall paths.

Mine and Quarry Sites

Installed below quarry faces, open-pit slopes, and mine access roads to reduce rockfall risk in working areas.

Hydropower and Reservoir Roads

Used on steep access roads, reservoir side slopes, and mountain construction routes after site survey.

Common Project Configurations

Passive Rockfall Barrier 500kJ, 3m Height

500kJ Passive Slope Protection Mesh suits low-to-medium energy rockfall zones alongside highways, railways and minor cut slopes. The full assembly covers galvanized steel posts, wire rope or ring net panels, load-bearing support cables, anchors and energy brake components. Every dimension and layout parameter must follow certified site construction drawings.

Technical Specifications:

Energy Rating: 500kJ

Barrier Height: 3m

Main Mesh: Steel wire rope net or ring net per engineering design

Support Rope: 14mm or 16mm as standard matching size

Post Spacing: 5m to 10m, finalized on project drawings

Post Material: Hot-dip galvanized structural steel

Accessories: Rock anchors, shackles, wire rope clips, base mounting plates, brake rings

Applications:

Mountain highway cut slopes, railway side embankments, slope toe zones with small and medium loose rock blocks.

Passive Rockfall Barrier 1000kJ, 4m Height

The 1000kJ passive rockfall barrier ranks as a mainstream engineering solution for highway slopes, tunnel entrances and mine service roads. Selection cannot rely merely on barrier height; engineers need to cross-check rockfall impact energy, stone bounce elevation and on-site foundation conditions before placing orders.

Technical Specifications:

Energy Rating: 1000kJ

Barrier Height: 4m

Main Mesh: Ring net fitted with secondary interlayer mesh, or full steel wire rope net assembly

Wire Rope Net: 8mm or 10mm hot-dip galvanized steel wire rope

Support Rope: 16mm or 18mm matching support cables

Post Type: H-shaped steel post or thick-walled steel pipe post by system design

Surface Treatment: Hot-dip galvanized coating or zinc-aluminum alloy anti-rust coating

Applications:

Highway full-section rockfall interceptors, tunnel portal slope protection, quarry access road barriers, temporary protection for mountain construction haul roads.

Ring Net Passive Barrier 1500kJ, 4m Height

1500kJ ring net passive barriers apply to sites featuring larger falling rock blocks and stronger impact energy than standard roadside projects. All core components including ring nets, bearing support ropes, steel post cross-sections, friction brake assemblies and anchor systems must comply with officially tested barrier design parameters.

Technical Specifications:

Energy Rating: 1500kJ

Barrier Height: 4m

Main Mesh: Woven steel ring net panel

Secondary Mesh: Double-twisted hexagonal mesh or chain-link mesh to catch fine broken stones

Support Rope: 16mm to 18mm galvanized steel cables

Anchoring System: Cable anchors or fully grouted rock bolts adapted to local ground geology

Energy Dissipation Parts: Brake rings or multi-group friction energy absorbers

Post Spacing: Defined exclusively by official project construction drawings

Applications:

Tunnel entrance high cut slopes, steep hydropower plant access roads, mountain highways prone to large-size rock collapse.

Passive Rockfall Barrier 2000kJ, 5m Height

The 2000kJ passive rockfall barrier is delivered as a complete engineered system for high-impact rockfall regions. Multiple critical indicators such as barrier overall height, steel post cross-section, anchor embedment depth and brake device layout require validation through professional rockfall engineering calculations.

Technical Specifications:

Energy Rating: 2000kJ

Barrier Height: 5m

Main Mesh: Heavy-duty ring net panel with secondary anti-leakage mesh

Support Rope: 18mm or 20mm high-tensile galvanized steel cables

Post Type: Reinforced heavy structural steel posts in line with certified system test standards

Anchor Type: Rock anchor, multi-strand cable anchor or cast-in-place concrete foundation anchor

Surface Treatment: Hot-dip galvanized coating or zinc-aluminum alloy long-term anti-corrosion coating

Note: Construction teams must verify anchor pull resistance and foundation bearing capacity prior to field installation.

Applications:

High-risk mountain trunk roads, open-pit mine high wall slopes, hydropower major transport routes, steep mountain faces with massive high-energy rockfall risks.