Underground mining methods vary greatly in scale and technique. However, all of them could benefit from improvements in wall control and prevention of over-break. This will reduce the quantity of waste rock that has to be excavated and moved and the amount of ground that has to be made safe and supported. This can be achieved by using a number of products from the GasBlaster Range.


Other benefits include:

  • Reduction in the amounts of fine particles produced and the loss of, for instance, gold, silver and platinum in the dust portion blown into mine back areas and washed into cracks in the footwall

  • Allowing mining in some areas where fume limitation is paramount

  • Reduction in the need for employees to have to stem before blasting

  • The introduction of selective and continuous mining techniques and thus improving mine productivity and profitability

  • A reduction in vibration and airblast at or near sensitive equipment and mine pillars, for example, i.e. at sites where valuable ground might be sterilised

  • Storage underground close to the blast area with no need for ‘track and trace’ and expensive facilities and control.

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Specifically when tunnelling the above can apply however there are other benefits:

  • Helping to prevent damage to previously excavated concrete lined adjacent tunnels and excavations, i.e. twin tunnelling and Crossrail-type operations where precision is demanded

  • Tunnel widening where services and equipment are already in position

  • Close proximity urban blasting, especially beneath antiquities and very sensitive surface structures – computer centres, hospitals, etc

  • Areas where short holes and very delicate work is required to be carried out underground in urban areas: car parks, oligarch underground swimming pools, wine cellars and so on

  • Work where permission for explosives cannot be obtained and ‘blasting’ is required around the clock with no possibility for vacating personnel

  • Breaking of oversize rocks that are impinging on the productivity of continuous boring machines and other mechanical tunnelling methods

Underground Mining and Tunnelling

 

UN 1.4S CLASSIFIED AND CE MARKED

SAFER & MORE ENVIRONMENTALLY

FRIENDLY THAN HIGH EXPLOSIVES

NO TRACK AND TRACE