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Debris flow Protection Nets

This product  is installed in the gully and is used to intercept the materials carried by debris flows.
This product is a flexible barrier structure, mainly consisting of a tension anchor system, energy dissipation device, steel columns, upper and lower support ropes, anti-sedimentation device, and flexible metal net.

Understanding the Debris flow Protection Nets

This product is a flexible barrier structure, mainly consisting of a tension anchor system, energy dissipation device, steel columns, upper and lower support ropes, anti-sedimentation device, and flexible metal net. It is installed in the gully and is used to intercept the materials carried by debris flows.

Component Description

  • Anti-erosion device, 12# channel steel, galvanized layer weight > 600g/m2.
  • High-strength steel wire rope, with a diameter of 22 mm, tensile strength > 1770 MPa, minimum breaking force > 284 KN, layer weight > 130 g/m2.
  • Circular steel wire mesh: Each ring is formed by winding 7 loops of 0.3mm hot-dip galvanized steel wire. The overlapping length at the ends should be no less than 10cm. It should be evenly distributed at (at least three) locations.
Debris flow Protection Nets

Main construction requirements

  • The Debris flow Protection Nets is set according to the gullies on the mountain, and the specific spacing depends on the actual situation on site.
  • The anchor rods are marked with instructions. The spacing of the anchoring points can be found in the floor plan of the protection system.
  • Both the upper and lower support ropes are arranged in a double-strand configuration. The remaining parts are directly connected to form a whole. The ends of the support ropes are all securely fastened using 6 corresponding rope clamps.
  • The ring net is sewn to the upper and lower supporting ropes using corresponding shackles. The seams between the ring nets, between the ring net and the longitudinal rope, and between the ring net and the transverse rope are sewn using sewing ropes or 3.25T shackles.

FAQ

Q1: How do Debris Flow Protection Nets differ from standard rockfall barriers?

A: Unlike rockfall nets, these systems feature debris-specific components:

  • Steel-Polymer Energy Dissipaters (absorb kinetic energy of viscous flows)

  • Scour Aprons (prevent undercutting by redirecting water)

  • Anchoring Cables (resist lateral debris pressure)
    Designed to intercept saturated sediment mixtures up to 15,000m³ in gullies.

Q2: Can Debris flow Protection Nets be installed in narrow, steep gullies without heavy machinery?

A: Yes. The modular design allows:

  • Helicopter deployment for remote areas

  • Manual assembly on slopes ≥60°

  • No concrete foundations (use driven steel micropiles)
    Typical installation: 3-5 days per 100m.

Q3: Can Debris flow Protection Nets handle extreme debris volumes like glacial lake outbursts?

A: We engineer custom multi-tier systems:

  • Tiered nets for 50,000m³+ events

  • Integrated sediment traps

  • Real-time monitoring sensors (strain & fill-rate)
    Lead time: 3-5 weeks for bespoke designs.

Relatde Products

This device is applicable to mountainous areas with buffer zones near building facilities. It can prevent rockfalls, flying rocks, avalanches, and mudslides from entering the building facilities, thus avoiding the damage caused by disasters to the building facilities.

Applied to the entrances and exits of tunnels, where the mountains are high and the slopes are steep, and where there is a high risk of dangerous rocks and weathered debris falling directly onto the road surface, posing serious hazards.

It is mainly used for protecting small rockfalls and foreign objects from invading on the slopes of road cuts. Its components are independent replaceable units, which facilitate installation and replacement.

By combining the steel columns and the steel wire mesh, a complete structure is formed, providing slope protection for the protected area. This prevents the falling of collapsing rocks and serves as a slope protection measure.

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