My first Magazine dsi-info-23-en | Page 34

Underground—North America—Canada—Mining Innovations in Mining: DSI Underground develops efficient Cable Bolt Systems Cable Bolts are routinely used for underground roof support in coal, metal and non-metal mines. Since cable bolts in Mining are long, single-section multi-strand tendon supports, they are very suitable for use in deep boreholes and where mining heights restrict the use of long solid-bar style rock bolts. DSI Underground is aware of the important role of these ground support products in Underground and is therefore continuously developing its product offer in this area. Recently, DSI Underground tested and approved new cable bolt systems: Square Head Cable Barrels, Threaded Tensionable Cable Bolts and new Indented Strand Cable Bolts. DSI Square Head Cable Barrels The new DSI Square Head Cable Barrels permit bolt installation and resin-mixing with conventional installation tools. Numerous Square Head Barrel Cable Bolts have been tested in the lab and in-the-mine to verify performance. The 1-1/8" Square Head meets ASTM Rock Bolt Specification requirements. DSI Threaded Tensionable Cable Bolts Tensionable ground support systems 34 provide additional roof rock reinforcement in thinly laminated mine roof conditions. Furthermore, Threaded Tensionable Cable Bolts permit the utilization of longer, single- section ground support systems in reduced mine opening heights. The new DSI Threaded Tensionable Cable Bolts have recently been successfully tested and approved at a DSI Underground customer mine in North America. In addition to product application, the test installation also demonstrated the immediate roof compression and the excellent product performance of the new cable bolt.