Tunnelling and Mining
mateenbarTM is used to reinforce diaphragm walls and secant piles to allow future and easy cutting by a Tunnel Boring Machine (TBM).
The soft-eye technique provides significant cost, scheduling and safety benefits in tunnel projects.
The TBM can drill through underground shaft walls without becoming damaged or delayed as the mateenbarTM can be cut as easily as un-reinforced concrete. With traditional steel reinforcement, the TBM has to be stopped before each shaft and the breakthrough has to be prepared manually, using hydraulic hammers and acetylene cutting equipment.
When located below the groundwater, a manual breakout often also requires further time consuming works such as a ground-stabilising and water-proofing by jet-grouting injection to prevent water and soil flooding the pit.
Construction proceeds faster, costs are lowered, and site safety is improved when mateenbarTM is installed in the break-through zone.
In drill and blast tunnels, the broken-out areas are secured using shotcrete and mateenboltTM rock-bolts.
The use of mateenboltTM in mines is increasing from year to year and FRP rockbolting is becoming one of the most common support systems in the mining industry. Today most FRP rockbolts are used in coal mines because as cuttable rockbolts they offer the necessary temporary support, but can later be easily and safely cut by mining equipment as excavation progresses.
Construction proceeds faster, costs are lowered, and site safety is improved when mateenbarTM is installed in the break-through zone