Polyurethane injections
Purpose:
-Ground Stabilization: Strengthen loose or fractured rock and soil to prevent collapses and ensure safe working conditions. -Water Control: Seal cracks and voids to prevent water ingress, which can destabilize mine structures and equipment. -Void Filling: Fill abandoned tunnels, stopes, or other underground voids to prevent subsidence and improve stability. -Structural Reinforcement: Reinforce mine shafts, tunnels, and other structures to extend their lifespan and ensure safety. -Dust Suppression: Bind loose particles to reduce dust emissions in underground and surface mining operations. -Emergency Repairs: Provide quick and effective solutions for stabilizing unstable ground or sealing water leaks in emergency situations.
How do inhibitors work?
Polyurethane injections are a versatile and widely used technology in the mining industry for ground stabilization, water control, and structural reinforcement. Polyurethane (PU) is a polymer material that expands upon injection, filling voids, cracks, and fractures in rock or soil. Its unique properties, such as rapid curing, high strength, and flexibility, make it an ideal solution for addressing various challenges in mining operations.
Types:
Hydrophobic Polyurethane
Repels water and is used for sealing cracks and controlling water ingress in wet conditions.
Hydrophilic Polyurethane
Expands in the presence of water and is ideal for sealing active water leaks. Water-reactive PU grout.
Flexible Polyurethane
Provides elasticity and is used in areas subject to movement or vibration. Flexible PU foam for dynamic ground conditions.
Rigid Polyurethane
Offers high compressive strength and is used for structural reinforcement. Rigid PU foam for stabilizing rock fractures.
Fire-Resistant Polyurethane
Designed for use in areas with high fire risk, such as coal mines. Fire-retardant PU foam.
Application areas:
Tunnel and Shaft Stabilization
Inject PU foam into fractured rock or soil to stabilize tunnels, shafts, and drifts, preventing collapses and ensuring safe access.
Water Ingress Control
Seal cracks and joints in rock formations to prevent water from entering mine workings, which can destabilize structures and equipment.
Void Filling
Fill abandoned stopes, tunnels, or other underground voids to prevent subsidence and improve overall ground stability.
Rock Bolting and Anchoring
Use PU injections to reinforce rock bolts and anchors, enhancing their holding capacity in weak or fractured rock.
Dust Control
Inject PU foam to bind loose particles and reduce dust emissions in underground and surface mining operations.
Emergency Ground Support
Provide rapid stabilization in emergency situations, such as rockfalls or unexpected ground movements.
Sealing Leaks in Pipelines and Tanks
Use PU injections to seal leaks in water pipelines, fuel tanks, and other infrastructure within mining operations.
Slope Stabilization
Stabilize slopes in open-pit mines by injecting PU foam into fractures and weak zones, preventing landslides and erosion.
Foundation Stabilization
Reinforce the foundations of heavy mining equipment, such as crushers and conveyors, to prevent settling and ensure stability.
Backfilling
Use PU foam as a lightweight backfill material to support underground structures and reduce the load on surrounding rock.
Advantages:
STRENGTH
Increasing the service life of concrete
PROTECTION
Preventing destruction
SAVING
Reducing repair costs
Feedback:
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