|
|
|
|
 |
MINE SERVICES |
||
 |
Compressed Air |
||
Compressed Air
Compressed air is commonly used as a power source due to the flexibility afforded by compressed air equipment and because of complications involved with the use of electric or diesel power in some locations underground. It is mainly used for low capacity applications, including drilling short holes (especially for strata bolting), for pumping, for small tools (e.g. impact wrenches, power hacksaws, etc) and occasionally for traction and for auxiliary ventilation (air fans or Venturi's). Care is required in using compressed air because of the possibility of generating sparks with sufficient power to ignite methane from static electricity. All compressed air systems or equipment must be anti static (which mostly means electrically conducting) and earthed, while hoses used for compressed air must be FRAS.
The majority of mines reticulate compressed air from surface compressors in steel pipes, frequently suspended alongside the water supply lines. Occasionally underground compressors are used which reduces the need for an extensive pipe system and the amount of leakage, but also restricts the availability. Underground compressors are also prone to be fire hazards if not very well maintained.
As for water, the compressed air reticulation system should be analysed for long term requirements at the planning stage