Coal mining

Coal mining

We are a leader in providing safe environments in extremely fractured and fluid ground conditions. We understand that safety and efficiency are the key requirements of coal production.

Ground Control

Ground Control is fundamental to the integrity and safety of underground mining operations.

Ground Control applications
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Ground Control

Ground Control is fundamental to the integrity and safety of underground mining operations.

Ground Control applications
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Ground Control

Ground Control is fundamental to the integrity and safety of underground mining operations.

Ground Control applications
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Ground Control

Ground Control is fundamental to the integrity and safety of underground mining operations.

Ground Control applications
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Water Control

Water ingress into an underground mine can represent a major risk if not recognised and rectified.

Water Control applications
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Water Control

Water ingress into an underground mine can represent a major risk if not recognised and rectified.

Water Control applications
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Gas & Ventilation Control

Adequate ventilation is a necessity to maintain air quantity and safety.

Gas & Ventilation Control applications
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Cavity & Backfilling

Increasing pressure from mining activity and variable geotechnical conditions can cause fractured ground, which if not supported, may lead to incidents of rock fall or roof collapse.

Cavity & Backfilling applications
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Cavity & Backfilling

Increasing pressure from mining activity and variable geotechnical conditions can cause fractured ground, which if not supported, may lead to incidents of rock fall or roof collapse.

Cavity & Backfilling applications
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Cavity & Backfilling

Increasing pressure from mining activity and variable geotechnical conditions can cause fractured ground, which if not supported, may lead to incidents of rock fall or roof collapse.

Cavity & Backfilling applications
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Ground Control

Bolting

We offer both steel and glass fibre reinforced polymer bolting products and accessories to stabilise the ground.

Product title
Lokset™ Products

We have manufactured Lokset resin capsules since the late 1960's and are the leading supplier and innovator in this field. Our development and manufacturing ensures security of supply, service and support.

The Lokset system consists of an easily handled cartridge, containing a highly reinforced polyester resin component, together with its catalyst, in accurately measured quantities. The rotation of the bolt during installation ruptures the capsule, shreds the skin and mixes the two components causing a chemical reaction and transforming the resin mastic into a solid anchor.

The Lokset resin capsule series is available in multiple configurations of single/double length combinations, diameter, set time, set time combinations, viscosity and shelf life.

 

Did you know?

The oldest reference Minova has for Lokset® resin anchors was the strengthening of the London Heathrow Airport road access tunnel in 1963 to allow heavy jets to land. Since then there have been numerous applications across the world in mining applications, highway tunnels, civil applications and a submarine base.

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Product title
Glass Fibre Resin Polymer Products

GFRP products are suitable for temporary and permanent solutions and with their low-weight, their are ideal for decreasing risks associated with manual handling.

Our partnership with FiReP® allows us to provide you with the flexibility that you need, wherever you are.

FiReP® Group is one of the world’s largest producer of Fibre Reinforced Polymer (FRP) pultruded bars with unique profiles and thread functions for application in the mining, construction and energy sectors.

The Group has two plants in Shanghai (China) and Velenje (Slovenia), certified according to ISO9001 and ISO14001.

With subsidiaries in the 6 countries Switzerland, Germany, China, Slovenia, Canada and Japan the group offers worldwide presence and service on site.

Minova has partnered with FiReP in 2009 to bring new products and technical expertise to our portfolio.

Since then, we have been working jointly to provide our mining, energy and construction customers with an enhanced portfolio of support products and services.

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Product title
Rock Bolts

We provide you with solutions for both active and passive methods of rock support wherever you are.

Our products range from various steel and Glass Fibre Reinforced Polymer (GFRP) bolts to steel arches, meshes and shotcretes.

Our offering can help you with:

  • Roof and ground control
  • Slope stabilisation
  • Rock fall
  • Permanent and temporary rock bolting
  • Spiling
  • Converging/yielding areas

Bolts alone may not be enough.

Many applications require additional components to ensure the desired results.

We provide steel and GFRP accessories that work in combination with our products for you to achieve the best outcomes. From drill bits, couplings, meshes to plates and nuts and trusses. Our portfolio works to provide you with the right solutions wherever you are.

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Surface control

Providing ground support on the surface of mines.

Product title
Plates / Straps Type W

SP-220, SP-270, and SP-320 W-straps have a similar design. They differ only in terms of steel sheet thickness and section width. There are deformations for added strength and appropriately spaced holes along the straps (round or oval as requested). It is possible to connect two or more mats cross wisely or length wisely.

In terms of a range of application and production method the mats can be divided into the following types:

  • W – strap type SPs
  • W – strap type SPo
  • W – strap type SPp
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Product title
The In-Roof™ Cable Truss System

Uncompromising Strength

Our research indicates that the design capacity of the IN-ROOF system should be limited to the ultimate strength of the cable being used (30 tons).

Simplicity - Only Three Basic Components

  • IN-ROOF bracket/bolt assembly
  • Cable tie rods
  • Cable coupler
  • Integrated cable wedges in the coupler
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Product title
Grips for Secondary Bolting

The grips are made of typical J25, J29, and J36 type section and are fixed by two bolts or by bolt and hook screw M24 or M20.

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Standing support

We offer enhanced standing and roof support solutions in underground coal mining.

Product title
Tekblend

A one component material which after mixing at the site of application with the appropriate amount of water (water/powder ratio of 1:1 to 4:1) sets to become a durable concrete material.

The material, upon exiting the pump, is liquid and thus it is able to fill any roughness and gaps. Tekblend gels after about 3 minutes depending on the preparation method.

Tekblend is commonly applied in:

  - building of monolithic packs for the protection of longwall galleries

  - building of ventilation and explosion resistant seals

  - building of isolation and backfill walls

  - filling voids (cavities) above mining excavation roof support

  - eliminating voids outside of mining excavation roof support

  - filling backfill voids

  - sealing of galleries

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Product title
TekPak P

TekPak P is a patented pumpable crib material having substantial benefits in terms of roof control, speed and ease of installation. TekPak P has a high early strength allowing the crib to resist bed separation and convergence. The fully cured strength is substantial with over 150 tons of load bearing capacity.

 

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Product title
TEKCRIB SUPPORT SYSTEM

Cylindrical bags, 27” or 30” diameter, are secured to the mine roof and are subsequently filled with a foamed cement.

The installation of the TekCrib system is accomplished by using the Minova TekPlacer unit, specially designed to combine the TekCrib powder with air and water, producing a cementitious foam.

The foam is typically pumped a distance of 1,000 ft., although much longer distances are possible, especially when pumping down surface boreholes. The mix begins to gel within minutes of discharge and cures to a final strength, ranging from approximately 400-800 psi.

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Chemical injection

Our extensive range of polymer systems are used for stabilising, sealing and consolidating the ground.

Product title
BEVEDOL / BEVEDAN

These resins have been developed based on the knowledge of specific problems arising during excavation and mining operations – especially that of maintaining the direct overburden stability and the stability of the coal face.

These products are fast reacting two-component (2C) polyurethane resins designed to stabilise and consolidate the convergent or disrupted strata, with an excellent sealing effect on gases and water.

 

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Product title
GEOFLEX HS

GEOFLEX HS Component A is a special sodium silicate with additives. GEOFLEX HS Component B is a modified polyisocyanate.

The curing of Component A results in a silicate, whilst smultaneously a solid polyisocyanurate/polyurea is formed from Component B. The mixture of these two Components creates a tough, elastic, solid silicate resin (organic-mineral resin).

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Product title
CarboThix

This product was designed to improve the productivity of ground support installation in underground mining and tunnelling applications. Using the pumpable resin enables the load to be taken up in minutes rather than the typical 24 hours from cementitious grouted systems. Typical applications of CARBOTHIX™ include grouting of cable bolts, solid steel or GFRP bolts, self-drilling anchors and one-step bolting operations in automated mode or for consolidation injection works in direct overburden.

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Sprayed coatings & membranes

Our sprayed coatings and membranes provide additional ground support and waterproofing solutions.

Product title
Tekflex

The high-strength Tekflex membrane was originally developed according to the TSL (Thin-Sprayed-Liner) technology to serve as an alternative to steel mesh and shotcrete for mining projects. Today, the Tekflex family has expanded and covers many more applications in the civil and tunnelling sectors.

Tekflex products are based on mineral materials with special additives or polymers to achieve sufficient rigidity or required flexibility depending on the type of the application. With just a few mm of thickness, the Tekflex membranes represent an effective, low-cost solution for changing the mechanical parameters of the lining or increasing impermeability. 

 

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Product title
Tekcrete™Fast M

Tekcrete™ Fast M was developed in response to customer demand for a low dust gunite with effectively immediate strength on application.

Fiber reinforced, this product offers strengths over 8,000 psi, and can be used in conventional, dry-process gunite equipment. It is ideal where immediate structural strength is required.

The product can be used with or without steel or polymer mesh, although the mesh will provide additional tensile and flexural strength.

Binding broken strata together for better structural integrity, TekCrete Fast M can be used anywhere in a mine where conventional gunite is used and as with any coating or sealant, it performs best when applied as soon as possible after the strata is exposed. Including rebound, TekCrete Fast M has a surface coverage of approximately 8.2 ft2 per 60 lb. bag at a thickness of 1⁄2“.

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Product title
Capcem™ KT Products

Capcem™ KT Fast

Capcem™ KT is a rapid-hardening sealant coating that provides a protective layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure. Support strength develops rapidly after placement.

Capcem™ KT Fast 2C

Capcem™ KT Fast 2C is a sealant coating that provides a protective, light grey layer to rock, coal, or concrete surfaces which are susceptible to deterioration on exposure. This product is especially recommended for stabilisation of burnt coal surfaces, whilst its fast rate of strength development allows rapid development of support.

Capcem™ KT Grey

Capcem™ KT Grey is a sealant coating that provides a protective grey layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure.

Capcem™ KT White

Capcem™ KT White is a bright sealant coating that provides a protective layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure. The bright white colour makes it particularly suitable for use in waiting places, underground workshops and similar locations.

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Grouting

Our bulk and capule resin and cementitious grouts stabilise rock and provide support when you need it most.

Product title
CarboThix

This product was designed to improve the productivity of ground support installation in underground mining and tunnelling applications. Using the pumpable resin enables the load to be taken up in minutes rather than the typical 24 hours from cementitious grouted systems. Typical applications of CARBOTHIX™ include grouting of cable bolts, solid steel or GFRP bolts, self-drilling anchors and one-step bolting operations in automated mode or for consolidation injection works in direct overburden.

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Equipment & accessories

Our range of equipment and accessories provides enhanced operational capabilities.

Product title
Super Turbo Bolter

Its design enables it to achieve 50 % more thrust during drilling or bolt installation compared to other machine types which require a 3rd stage leg for similar reach.

The careful selection of materials and design allows the Super Turbo to be the lightest and strongest machine available which enables it to operate reliably and effectively in even the toughest mining environments.

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Product title
Autorock™ Drill Rig

This is a self-contained small drill rig for drilling holes and installing rock bolts in low-height stopes. By clamping itself between the footwall and hanging wall the Autorock rig stabilises and guides the rock drill, allowing remote operation and faster penetration. This gives marked improvements in safety and productivity.

The Autorock rig is made in a number of models, to suit different stope widths, user preference of power sources and rock drills.

Today more than 5000 units are operated in South Africa.

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Product title
Turmag Drilling Machine

The Turmag has been developed in accordance with state of the art technology with regard to efficiency, handling and operational safety. The machine pressure has been tested by Lloyds Beal Test Centre.

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Special

Specialist products aimed at enhancing mining ground support.

Product title
CarboSolv Products

CarboSolv products are extremely efficient solvents that are widely used for the lubrication, degreasing and cleaning of the injection pumps and hoses in mining, construction and energy applications.

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Water Control

Chemical injection

Our extensive range of injectable products and systems are used for water control in the mining environment.

Product title
BEVEDOL / BEVEDAN

These resins have been developed based on the knowledge of specific problems arising during excavation and mining operations – especially that of maintaining the direct overburden stability and the stability of the coal face.

These products are fast reacting two-component (2C) polyurethane resins designed to stabilise and consolidate the convergent or disrupted strata, with an excellent sealing effect on gases and water.

 

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Product title
GeoFoam

Component A is a modified silicate, and component B is a modified isocyanate. After mixing in a volumetric ratio 1: 1 the resin starts foaming up within a few seconds.

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Product title
WilkitFoam Products

These products are fast expanding foam fillers that can be used for a wide variety of applications including:

  • Spray-on application 
  • Rapid cavity filling
  • Ground consolidation
  • Water sealing
  • Stopping of water intrusions
  • Cavity stabilisation
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Sprayed coatings & membranes

Our sprayed coatings and membranes help control water underground.

Product title
FT-30

When mixed with water, the material sets within minutes. It creates a coating with instant resistance to pulling off and delamination caused by active leaks of water. It is particularly recommended for areas with high moisture content or highly watered.

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Product title
Minostop

It is supplied as a ready to use blend of dry powders which requires only the addition of clean water to produce a highly compacted, rapid setting mortar which is easy to apply.

The material is based on a blend of cements, graded aggregates, special fillers and chemical additives which control the rate of set and minimise the risk of shrinkage cracking.

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Product title
Tekflex DS-W

The powder is mixed with water at the special nozzle and creates a suspension, which gels within seconds, creating a continuous membrane on the applied surface.

After several minutes, it becomes tack free and then rapidly increases in strength over next days.

As a result, a strong and elastic sealing membrane is formed.

The membrane bonds very well to surfaces such as rock, coal and concrete.

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Gas & Ventilation Control

Chemical injection

Our resin and grouts are used for ventilation control in mines.

Product title
BEVEDOL® / BEVADAN®

Bevedol® / Bevedan® is a two component, foaming polyurethane (PUR) injection system used to consolidate highly convergent strata. The system consists of a resin (Bevedol®) and a catalyst (Bevedan®) which is delivered into the strata via a pump unit and injection gun. The two components mix in the gun, which initiates the reaction of the product. The low viscosity mixture penetrates the smallest fissures, hardens and ensures the consolidation and sealing of the area submitted to treatment.

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Product title
TekSeal™ Products

This is a revolutionary system for installing permanent underground ventilation seals.

The product is easy to install and eliminates the requirement for hitching into the roof, ribs and floor. With less manpower required for installation and possibility to place it remotely from the working site, the products reduce risk of unnecessary exposure of your workers, making them safer.

Tekseal is widely used around the world and is ideal for the difficult to reach areas.

The products within this range are available in various formulations to tailor their application to your needs.

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Sprayed coatings & membranes

Our products provide excellent stoppings and seal solutions.

Product title
Tekflex

The high-strength Tekflex membrane was originally developed according to the TSL (Thin-Sprayed-Liner) technology to serve as an alternative to steel mesh and shotcrete for mining projects. Today, the Tekflex family has expanded and covers many more applications in the civil and tunnelling sectors.

Tekflex products are based on mineral materials with special additives or polymers to achieve sufficient rigidity or required flexibility depending on the type of the application. With just a few mm of thickness, the Tekflex membranes represent an effective, low-cost solution for changing the mechanical parameters of the lining or increasing impermeability. 

 

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Product title
Capcem™ KT Products

Capcem™ KT Fast

Capcem™ KT is a rapid-hardening sealant coating that provides a protective layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure. Support strength develops rapidly after placement.

Capcem™ KT Fast 2C

Capcem™ KT Fast 2C is a sealant coating that provides a protective, light grey layer to rock, coal, or concrete surfaces which are susceptible to deterioration on exposure. This product is especially recommended for stabilisation of burnt coal surfaces, whilst its fast rate of strength development allows rapid development of support.

Capcem™ KT Grey

Capcem™ KT Grey is a sealant coating that provides a protective grey layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure.

Capcem™ KT White

Capcem™ KT White is a bright sealant coating that provides a protective layer to rock, concrete or coal surfaces which are susceptible to deterioration on exposure. The bright white colour makes it particularly suitable for use in waiting places, underground workshops and similar locations.

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Product title
FT-30

When mixed with water, the material sets within minutes. It creates a coating with instant resistance to pulling off and delamination caused by active leaks of water. It is particularly recommended for areas with high moisture content or highly watered.

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Ventilation seals & barriers

Our seals and barrier systems include proven explosion proof performance of plugs, seals and stoppings.

Product title
Tekblend

A one component material which after mixing at the site of application with the appropriate amount of water (water/powder ratio of 1:1 to 4:1) sets to become a durable concrete material.

The material, upon exiting the pump, is liquid and thus it is able to fill any roughness and gaps. Tekblend gels after about 3 minutes depending on the preparation method.

Tekblend is commonly applied in:

  - building of monolithic packs for the protection of longwall galleries

  - building of ventilation and explosion resistant seals

  - building of isolation and backfill walls

  - filling voids (cavities) above mining excavation roof support

  - eliminating voids outside of mining excavation roof support

  - filling backfill voids

  - sealing of galleries

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Void filling

Providing resins and foams for void filling in and around seals.

Product title
GEOFOAM®

Geofoam® is a urea silicate based resin foam for immediate stabilisation and filling. The foam is rapidly reacting, strongly expanding resin injection system.

Component A is a modified silicate, and Component B is a modified isocyanate. After mixing the resin starts foaming-up within a few seconds to form a lightweight foam. This dual purpose resin foam is used for strata injection and cavity filling and is CFC-free and is flame-resistant.

 

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Product title
CARBOFILL®

Carbofill® is a two component phenolic foam resin used for filling cavities. Component A is an aqueous phenolic resins containing a suspension of solid carbonates as a blowing agent and Component B is a blend of various acids which affect the foaming process and the curing reaction.

The final product is a lightweight material with a yellow to pink colour. Ideal for filling of cavities in underground roadways and longwalls and the stabilisation and prevention of gas accumulation, stabilisation of debris and forming temporary plug seals.

 

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Product title
Ekoflex Products

Ekoflex products are a two-component foams, obtained after mixing component A (aqueous solution of phenol-formaldehyde resin) and component B (aqueous solution of organic and inorganic acids) in a volume ratio of 4:1. The foam property allows the products to be used under various geological and mining conditions.

Various products are available in this category with varying foaming factors and reaction speeds.

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Special

Specialist products aimed at enhancing mining gas and ventilation control.

Product title
CarboSolv Products

CarboSolv products are extremely efficient solvents that are widely used for the lubrication, degreasing and cleaning of the injection pumps and hoses in mining, construction and energy applications.

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Cavity & Backfilling

Cavity Filling

Providing pumpable grouts for cavity and void filling in the mining sector.

Product title
GEOFOAM®

Geofoam® is a urea silicate based resin foam for immediate stabilisation and filling. The foam is rapidly reacting, strongly expanding resin injection system.

Component A is a modified silicate, and Component B is a modified isocyanate. After mixing the resin starts foaming-up within a few seconds to form a lightweight foam. This dual purpose resin foam is used for strata injection and cavity filling and is CFC-free and is flame-resistant.

 

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Product title
Ekoflex Products

Ekoflex products are a two-component foams, obtained after mixing component A (aqueous solution of phenol-formaldehyde resin) and component B (aqueous solution of organic and inorganic acids) in a volume ratio of 4:1. The foam property allows the products to be used under various geological and mining conditions.

Various products are available in this category with varying foaming factors and reaction speeds.

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Special

Specialist products aimed at enhancing mining cavity and backfilling.

Product title
CarboSolv Products

CarboSolv products are extremely efficient solvents that are widely used for the lubrication, degreasing and cleaning of the injection pumps and hoses in mining, construction and energy applications.

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