Gabion retaining walls are essential for high-performance earth retention and slope stabilization in civil engineering and landscaping projects. In infrastructure development, they provide critical support for roadway embankments, bridge abutments, and railway cuttings, effectively preventing landslides and soil erosion. For hydraulic applications, these permeable structures manage riverbank training and channel lining by dissipating water energy. Common product specifications include basket dimensions such as 2.0 x 1.0 x 1.0 m, 1.5 x 1.0 x 1.0 m, or 1.0 x 1.0 x 1.0 m. These are manufactured from 3.0 mm to 4.0 mm heavy-duty galvanized or PVC-coated steel wire with standard 80 x 100 mm or 100 x 120 mm hexagonal mesh openings. Their flexible design allows for natural drainage and vegetation growth, commercial privacy screens, and large-scale industrial sound barriers.
Case : North Mountain Highway Embankment Slope Stabilization Project
- Location: Rugged Mountainous Terrain
- Objective: To stabilize a 250-meter section of steep highway embankment prone to seasonal landslides and heavy runoff.
Product Specifications and Quantity
- Product: Heavy-Duty Double-Twisted Hexagonal Gabion Baskets
- Material: Hot-Dipped Galvanized Steel with PVC Coating
- Mesh Size: 80 x 100 mm
- Wire Diameter: 3.0 mm (Core) / 4.0 mm (Finished with PVC)
- Standard Unit Sizes: 2.0 x 1.0 x 1.0 m and 1.5 x 1.0 x 1.0 m
- Total Quantity: 1,200 cubic meters
Installation Highlights
- Foundation Preparation: A leveled trench was excavated and lined with non-woven geotextile to prevent the migration of fine soil particles into the rock fill.
- Assembly: Gabion baskets were delivered flat-packed, unfolded on-site, and laced together using heavy-duty 2.2 mm tie wire.
- Stone Filling: Local angular stones (100 mm to 200 mm range) were used to fill the baskets in 30 cm layers to ensure maximum density and minimal void space.
- Structural Lacing: Adjacent units were laced along all contact edges to create a monolithic structure capable of resisting massive lateral earth pressure.
Project Results
- The engineering team selected a stepped gravity wall design using PVC-coated gabions to combat the corrosive effects of soil minerals and high moisture levels. Unlike rigid concrete walls, the gabion structure provided the necessary flexibility to accommodate minor ground settlements without cracking.
- The completed gabion retaining wall successfully stabilized the embankment, surviving two major monsoon seasons without structural shifting. The permeable nature of the wall eliminated hydrostatic pressure buildup, while the PVC coating ensured a projected service life of over 50 years. This project demonstrates the cost-effectiveness and reliability of gabion systems for critical infrastructure protection.
