Gabion retaining walls are a flexible gravity-based protection system based on modular design. They combine high-strength steel wire mesh boxes (hexagonal woven or welded mesh) with densely packed riprap, utilizing the structure's own weight to resist the lateral active earth pressure from the soil behind. This structure is widely used in highway slope protection, riverbank protection, and landscape hard paving projects due to its excellent permeability, foundation self-adaptability, and ecological compatibility.
Instant Hydrostatic Relief
Water pressure accumulation is the leading cause of tilting and cracking in various rigid retaining walls (such as concrete walls and masonry walls). The riprap inside gabion retaining walls naturally possesses a 30% to 40% interconnected porosity.
• Accumulated water and capillary water behind the wall can drain smoothly without obstruction.
• Real-time elimination of hydrostatic pressure significantly reduces the lateral thrust of the soil after it becomes waterlogged.
• No need for complex pre-designed drainage pipes or manual pumping systems.
Flexible Structure and Foundation Adaptability (Structural Flexibility)
Unlike concrete, which is prone to brittle fracture, woven (double-twisted) gabion retaining walls are typical flexible structures.
• When uneven settlement occurs due to soft soil consolidation or seasonal frost heave, the gabion cages can adapt to displacement through fine-tuning of the internal stones and reasonable stretching of the mesh.
• The structure releases external stress through its own minor deformation, making it less prone to overall fracture or catastrophic collapse.
Natural and Organic Ecological Self-Healing
The gabion retaining walls are not cold industrial barriers; they have good environmental compatibility:
• Over time, river sediment or wind-borne dust will naturally settle in the gaps between the stones.
• Plant seeds from nature will take root and germinate here, and mature plant roots will penetrate the mesh and grow into the original soil behind the wall.
• The combination of wire mesh, boulders, and plant roots weaves together to create a structure that becomes increasingly stable over time, seamlessly integrating into the local landscape.
Efficient and Economical Construction Process
• Flat-packed Transportation: The wire mesh cages are foldable and packaged at the factory, significantly reducing their volume during long-distance sea or land transport.
• Locally Sourced Materials: The internal filler material largely utilizes waste rock excavated from the project and low-cost crushed stone from local quarries, effectively controlling the overall carbon footprint.
• Minimal Wet Work: Walls are formed on-site through assembly, stone filling, and twisting, eliminating the need for lengthy concrete pouring and curing periods and minimizing seasonal and rainy season restrictions.
