Institut za rudarstvo i metalurgiju Bor

Model of embankment material and
basic soil were analyzed by the Mohr –
Coulomb fracture condition, and model of
collector material as the concrete material
with the following characteristics: MB40,
E = 24·10 5 kN/m 2 and the Poisson coefficient
ν = 0.15
Size of collector relative subsidence is
18 [cm], while maximum collector depression
is 35 cm.
CONCLUSION
Since the collector is the capital facility
for a mine, particular attention should
be paid to its development and environment
of collector location (due to the
stress-deformation condition). It is necessary
to set up the stable benchmarks near
inlet and outlet of the collector before taking
any rehabilitation measures, and those
benchmarks would be connected to the
State trigonometric network and had the
absolute elevations. With this absolute
elevation, zero measurement of roof and
floor should be made with precision levelling
as the condition of these two points
could be observed.
All measurements and observations
made on the collector under the open pit
"Bogutovo selo“ in Ugljevik can be applied
to the Kriveljska river tunnel.
REERENCES
[1] Study on the Results of Collector
Auscultation Under the Open Pit
“Bogutovo selo” in Ugljevik (in Serbian)
[2] M. Ljubojev, M. Avdić, D. Ignjatović,
L. Dj. Ignjatović, The Effect of
Flotation Tailing Dump Field 2 on the
Stability of the Kriveljska River
Tunnel, Mining Engineering, 2/2009,
pgs. 21 – 28, Bor 2009 (in Serbian)
[3] M. Ljubojev, R. Popović, Basics of
Geomechanics, RTB Bor, Copper
Institute Bor, 2006 (in Serbian)
[4] M. Ljubojev, D. Ignjatović, L. Dj.
Ignjatović, S. Krstić, Z. Stojanović,
Evaluation of the Rock Stability of the
Kriveljska River Tunnel Formed by
Comparison of Classification the Rock
Strength, Journal COPPER, No. 1,
2009, Vol. 34, pgs. 9-14 (in Serbian)
[5] M. Ljubojev, Z. Stojanović, D. Mitić,
D. Ignjatović, The Proposal of
Method for Construction the New
Tunnel of the Kriveljska River,
Innovation and Development, No. 1,
2009, pgs. 51-60 (in Serbian)
[6] M. Ljubojev, M. Avdić, M. Bugarin,
R. Popović, D. Ignjatović, Tunnel
Analysis in the Fault Zones and the
Effects of Stress distribution on the
Support, 2009, Journal of Mining and
Metallurgy, Vol. 45, No. 1, pgs. 49-57.
No 1,2010. 36
MINING ENGINEERING