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