DRILL & BLAST
A supporting role ‘T
he practice of longwall mining has been developed and refined with the use of hydraulic roof support systems, which provide support at the coalface to allow the shearer to cut the coal from the seam. Each support can weigh 30-40 tonnes and be rated at 1000-1750 tonnes
and also have the ability to hydraulically advance itself one metre at a time.
As the roof supports advance, so the roof of the mine is allowed to collapse behind them and the shearer continues to pull the coal from the seam. Tis all makes the roof support system of critical importance to the mining operation and to the safety of the miners involved in operating the machinery. Any equipment which is selected to operate in this hazardous environment must be proven in reliability and require a minimum level of maintenance. Te efficient operation of the roof support system directly affects
the productivity of the mine and any down-time on the system in such a difficult operating environment would be very counter- productive. Te reliable performance of these systems is essential if the client is to maximise output from the mine and return on investment.
08 INTERNATIONAL MINING ENGINEER
Hydraulic roof support systems are critical to longwall mining and to the safety of the miners
Hydraulische Dachträgersysteme entscheidend für Streb und für die Sicherheit der Bergleute sind
Sistemas de soporte del techo hidráulicos son críticos para la minería de tajo largo y para la seguridad de los mineros
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