PUMPABLE CRIBS

ENHANCED STANDING AND ROOF SUPPORT.

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.

 

TEKPAK® P

Tekpak® P is a Pumpable Crib material that offers substantial benefits in terms of roof control, speed and ease of installation, ideal for surface to seam installations. Tekpak® P gains 50% of its final 28 day strength within 3 hours.

Tekpak® P is a two part chemical system consisting of Tekcem® P and Tekbent® which when mixed together rapidly reacts to produce a load bearing crib. Tekcem® P is a blended cement powder which forms an easy to pump slurry with water, remaining pumpable for 24 hours. Tekbent® is a  low viscosity non setting liquid with an indefinite pumping life.

To learn more about Tekpak® P, visit our High Volume Grouts page.

 

 

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Advantages
  • Speed of installation
  • Improved safety
  • High strength
Product Features
  • Installation time is significantly reduced over other existing methods
  • Filled in a single pumping operation in about 12 to 15 minutes
  • Simple to set up for underground operation
  • Reduced safety risk exposure for operators in carrying loads to the work area and installing cribs
  • Delivers a superior support loading which yields controllably to ground pressure
  • Delivers more cost effective support infrastructure

Related Products

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Tekpak® P System

Minova's Tekpak® P Pumpable Crib System has been specifically developed to provide enhanced standing and roof support in underground coal mining and offers substantial benefits in terms of roof control, speed and ease of installation.

Tekpak® P is a two part chemical system consisting of Tekcem® P and Tekbent® which when mixed together rapidly reacts to produce a load bearing crib. Tekcem® P is a blended cementitous powder which forms an easy to pump slurry when mixed with water, remaining pumpable for 24 hours. Tekbent® is a low viscosity non setting liquid with an indefinite pumping life.

The system provides a more productive means to install roof support in longwall mining operations, providing increased safety for operational personnel and more cost effective mine production.

  • High early strength allows pumpable cribs to begin taking loads quickly, with 50% of the final 28 day strength achieved within 3 hours
  • A rapid gel time of 20 seconds allows each pumpable crib to be filled within one lift and to completely pressurise the crib to the roof
  • Suitable for use with surface to seam applications 

 
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Ventilation Seals

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.

 

Did you know?

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.

 
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Chemical Injection

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.  

 

Did you know?

Minova pioneered the first resin, application systems and design formulations into Australian mines based on German technology.

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