1. Coastal Protection & Breakwater Construction

   • Gabion cages are widely used in marine breakwaters to resist wave erosion and storm surges. Their flexibility allows them to adapt to seabed movements while maintaining structural integrity.
   • Material: High镀锌 (galvanized) or PVC-coated steel wires (e.g., zinc-aluminum alloy wires with 5% Al content) to withstand saltwater corrosion 

2. Submarine Pipeline Protection

   • Pre-filled gabion boxes are deployed around underwater pipelines to shield against anchor strikes and seabed abrasion.
   • Installation: Assembled on barges and submerged using cranes, with final positioning guided by divers 

3. Marine Structure Foundations

   • Gabion mattresses (reinforced earth pads) provide stable foundations for offshore platforms and tidal energy devices.
   • Standard Compliance: Meet EN10223-3 standards for wire diameter (2.0–4.0 mm) and tensile strength (>350 MPa) 

4. Erosion Control in Estuaries

   • Modular gabion systems prevent bank collapse in brackish water environments. Their permeable design allows natural sediment deposition and vegetation growth 

5. Floating Breakwaters

   • Hollow gabion structures filled with buoyant materials (e.g., foam) are used to dissipate wave energy in harbors.
   • Advantage: Lower maintenance costs compared to concrete structures 

Key Technical Features

• Corrosion Resistance: Zinc-aluminum alloy coatings (Galfan) extend service life to >50 years in marine conditions 
• Permeability: Allows water flow through gaps, reducing hydrostatic pressure and preventing undermining 
• Modular Design: Prefabricated units (e.g., 2m×1m×1m cages) enable rapid deployment in harsh marine environments 

Case Studies

• Cross-Sea Pipeline Projects: Gabion cages protected 10 km of underwater oil pipelines in the South China Sea, with zero failure reports after 10 years 
• Reef Restoration: Gabion frameworks in the Mediterranean support artificial reefs, enhancing marine biodiversity