We have installed ventilation seals throughout Australian coal mines for more than 15 years. We offer full roadway evaluation, seal design and contract installation of explosion rated seals. Our installed structures are fully rated and quality control tested to ensure construction is completed according to design specifications.
Working with a NSW coal mine we developed an approved design and using FB200 installed a plug seal rated to 120 psi. The FB200 was pumped 160m deep down a borehole and 700m horizontally to complete six bulkheads.
Our team have more than 20 years’ experience of design and installation (including live and engineered designs) in Australia. We have developed an extensive database of ventilation designs for even the most challenging applications.
Only contractor to have completed live explosion testing of ventilation seal designs.
Our concrete and plug seals can be individually designed to suit the strata conditions and roadway dimensions of most underground mines. Plug seals are typically constructed using our pumpable high volume grouts including FB200 and Tekseal. Explosion rated Tekseal plug seals have been tested to withstand blast pressures up to 120psi.
Product Features of FB200
• Rapid placement and quick strength gain
• Rapid gelling, quickly seals leakage paths
• Yields to ground pressure thereby reducing stress concentration
• Non-shrinking and low alkalinity making product safe to handle
Product Features of Tekseal
• Explosive resistant ventilation seals
• Excellent durability
• Rapid placement
Our FB200 low viscosity, high yield grout is used for many applications within underground mines. We have 20 years experience in using FB200 for stabilising rockfill to enhance stope extraction, constructing explosion rated ventilation seals, filling of large voids and constructing false pillars for pre-driven recovery roads.
We have developed variants for hostile conditions such as saline water, hot water and long distance pumping.
Typically pumped at a 2:1 water:powder ratio, FB200 can be used between 1:1 and 3:1 ratios depending on individual project requirements.
FB200 is supplied as a ready to use free flowing blended cementitious powder that only requires the addition of water in a suitable placing machine.
High yield, long life foaming grout primarily used for ventilation applications and cavity filling. Supplied as a ready to use free flowing blended cementitious powder that forms cement foam on mixing with water in a purpose designed placer.
Uses include explosion resistant ventilation seals, recovery of longwall face falls, backfilling behind steel sets, recovery of falls, rib stabilisation and general void filling.
Minova's Pumpable Crib system has been developed to provide enhanced standing and roof support in underground coal mining. Typically installed for gateroad secondary support, Pumpable Cribs are a cost effective alternative to tin cans or timber cribs. Our system provides a more productive means to install standing support in longwall mining operations, reducing exposure for operational personnel and more cost effective mine production.
Using our patented Tekpak® P technology, we allow you the flexibility to install Pumpable Cribs from the one surface location. A surface to seam operation allows mines to reduce equipment and material movements underground along with reduced operators underground.
We have invested in full scale testing of our Pumpable Crib's at an Australian NATA accredited facility, giving our customers confidence that our Pumpable Crib technology will perform to Australian conditions.
Pump injection chemicals up to 3,000m from the surface using a variety of pumping methods. Pumping chemicals from the surface eliminates up to 95% of activity. This means less exposure to chemicals and reduced manual handling. Limit the transportation of materials underground and reduce manning levels.
Minova pioneered the first resin, application systems and design formulations into Australian mines based on German technology.