Geobrugg’s steel wire mesh TECCO®, which has a tensile strength of 1,770N/mm², pro-tects against rockfall, rock bursts and squeezing ground in underground mining and tunnelling. Tests by the Western Australian School of Mines (WASM) have proven that TECCO® can carry higher static and dynamic loads than traditional reinforcement nets.
The wire is sufficiently tough and does not behave in a brittle manner. It can be stretched over sharp rock edges without sustaining damage. The mesh is diamond-shaped and along the edges, the wires are bent over and double twisted in such a way that this connection is as strong as the mesh it-self. The mesh is produced in rolls and can be manufactured in widths of up to 3.5m, in wire diameters of 4mm, 3mm or 2mm and in tailor-made lengths corresponding to the tunnel surface.
With the ROCK MESHA installation handler, compatible with all multi-arm drilling jumbos, the TECCO mesh is unrolled onto the wall in roll widths up to 3.5m and bolted by the jumbo operator in the same working process, thereby providing a fast, safe and fully mechanized installation. The mesh rolls are mechanically picked up by the jumbo with the ROCK MESHA, thus minimizing manual han-dling under unsupported sections of the drive.
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