Mining_Methods_UnderGround_Mining - Mining and Blasting

development
kure, Turkey
An Atlas Copco Rocket Boomer 282
equipped with COP 1838ME rock drills
is used to develop the ore and waste
drifts.
The Rocket Boomer has one extending
boom to facilitate drilling off the first
rounds in strike drifts at right angles.
Drill hole diameter is 45 mm,
and hole length 3.5 m. The mine has
conducted trials of bits from different
manufacturers, and has settled
on Secoroc as the most cost-effective.
Around 250 m/month of drivage
is required to keep pace with the
stopes, all of which are mined on the
retreat.
Most development is within the competent
footwall rock mass. The orebody
exhibits different rock mass characteristics.
Ground support is by shotcrete,
bolting with mesh, mesh reinforced
shotcrete, standard Swellex in 2.4 m
and 3.3 m lengths, and cement grouted
bolts in 3 m, 4 m and 6 m lengths.
Two manually-controlled Atlas Copco
Scooptram ST6C loaders are used for
mucking development faces.
Line-up of Atlas Copco equipment at Asikoy mine.
Scooptram ST6C, one of three at Asikoy.
The Rocket Boomer 282 handles all
rockbolt drilling, with 37 mm holes for
Swellex and 64 mm holes for grouted
rebar. The mine is working with Atlas
Copco to increase the use of Swellex,
because of its better controllability.
Production
The mining method is longhole bench
stoping with post backfill. The ore is
developed by driving strike access drifts
with cross sectional area of 21.68 sq
74 underground mining methods