Rock Fall Protection Nettings

It is important to understand the suitability and effectiveness of Rock Fall Protection systems and how they can provide optimal protection. Namrata Bichewar, Regional Manager (Maharashtra), Gabion Technology India

Rockfall constitutes one of the most hazardous landslide phenomena and can cause fatalities and damages to highways and railways in mountainous terrains. For this reason, preventive and protective structures are installed to reduce the risk of rockfalls in habited areas.

There are many factors that one should consider when selecting an appropriate system to mitigate natural hazards. It is important to understand the suitability and effectiveness of Rock Fall Protection systems and where they offer optimal performance.

As problem solvers to many geotechnical issues, Gabion Technology India (GTI) offers a strong and durable Rock Fall Protection solution for every project needs. The company is highly experienced in handling complete projects from design, to supply of material, and execution, with prompt services at any point of time. We believe that a solution which is a combinations of the protection systems is often the most cost-effective in many projects.

GTI strives to find a perfect balance between technical performance, risk, client value, ease, and safety of installations as we believe that one product cannot solve all the problems associated with a rockfall. We suggest a combination of products based on site conditions (geology, topography, environment, static and dynamic loading conditions) and client requirements (design life, maintenance). Hence, GTI’s Rockfall Nettings come with varying stiffness and tensile strength to suit the different needs of projects.

GTI^TM DT Steel Wire Mesh Netting

This factory manufactured roll is made of mechanically double twisted hexagonal wire mesh using heavily galvanized steel wire. The Netting is non-raveling and the edges are reinforced with a thicker wire called the selvedge (edge wire). The Netting is used to prevent small size boulders and rocks from falling onto rail and roadways to prevent loss of property and life. For application in marine or in highly corrosive environments, an additional protection is provided by extruding 0.5mm thick PVC coating over the heavily galvanized wire.

Features

• Flexible
• Non-raveling design
• Unique mechanical characteristic
• Superior corrosion resistance

GTI^TM StrongNet
This is manufactured using a composite of Steel Wire Ropes of 8 mm-10mm diameter with Mechanically Woven Double Twisted Hexagonal with opening Steel Wire netting (IS 16014). The product created has better stress distribution with high tensile strength at low strain, and high punch strength with low deformation. This is achieved by tying the wire ropes longitudinally to the edge wires of the double twisted mesh lacing wire.


In GTI’s StrongNet range, the Steel Wire Ropes are tied longitudinally to the mesh wires at intervals of 0.3 m to 1.5 m interval. The DT Mesh Netting (IS 16014) type with varying rope spacing is designed to provide various strengths reaching up to 200kN/m.

StrongNet has excellent fall during installation due to the vertical wire ropes and provides excellent function as a drapery mesh system. The double twist of the hexagonal mesh prevents unravelling of the netting if a wire gets cut due to any reason. GTITM Strong Net is designed to work efficiently with an anchorage system.

Features

• High tensile strength
• Easy to install
• Even stress distribution
• Avoids heterogenous deformation of mesh
• Superior corrosion resistance
• Cost effective

GTI^TM RockNet

RockNet is designed and manufactured to reach formidable tensile strengths up to 300kN/M at very low strain. A single continuous length of steel wire rope of 8-10mm diameter and 1770 N/mm2 grade (tensile strength) is wound around a frame of a netting panel of rhomboidal shaped openings. The openings are of typical 300 mm by 300 mm size and the rectangular netting panel is typically 4-6 m long on each side.

GTI Cross Linked Rhomboidal / Square Mesh steel wire rope panels are typically installed with small aperture secondary DT mesh nettings to enable holding back of small sized debris.

Features

• High tensile strength
• Easy to install
• Superior corrosion resistance
• Cost effective