Institut za rudarstvo i metalurgiju Bor

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exploitation, two variants of this method of mining were developed as well as: - the classic Aleksinac mining method, and - the changed or modified Aleksinac method The closure of the mine, occurred after the large collective accident in 1989, the coal exploitation was done in the north area of ''Morava'' field, where the roompillar mining methods were applied, so called the Aleksinac methods. The Aleksinac deposit is divided by mining works into three coal fields: the "Logorište", "Morava" and "Dubrava" (Fig. 1) and the reserves are specially determined for each field. Until now, the area of Aleksinac mines in its surroundings drilled over 120 drillholes. Most of these drillholes were drilled in order to investigate the coal. In determining the possibility of oil shale exploitation, their characteristics have to be taken into account. Thus, according to the size and complexity of the geological oil shale deposits divided into three groups, with each group divided into three subgroups depending on the thickness of the layer and the content of kerogen. In determining the quality of oil shale reserves, exploring layers, must be done, complex mapping of all exploratory drillholes, determine the genetic type of oil shale and in particular, to determine the qualitative and technological characteristics. Requirements are set in definition of oil shale contributed, to exist very few established reserves and resources, while the far greater share of potential reserves. According to the structural material, the Aleksinac deposit has a syncline form, in most of the deposits and complex structure in the "Dubrava", and is divided into several thrust faults, major, independent blocks. Layers are horizontal, slightly sloping angle to 20 o and sink to 90 o , and the deposit belong to second group. The thick consistency and quality, of overlie oil shale, there are classified into the subgroup I. The floor oil shale, due to the increased thickness variability and quality were classified in the subgroup II. [11] No 1, 2010. 49 MINING ENGINEERING
Figure 1. Shows the geographical location - view from the geographic information system (GIS software package ArcView 9.2) and contours of coal fields on the geological map in the Aleksinac basin. POSIBILITES FOR SIMULTANEOUS EXPLOITATION OF COAL AND OIL SHALE The fact that oil shale appears on the surface, in a form of offspirngs, the more space by providing the deposit of the field "Dubrava", to the field "Logorište", presents the benefits for surface exploitation. Skid for greater participation of surface exploitation of reserves in total deposits, is very steep sink of oil shale in one part of the deposit, up to 90 o . Steeply sink of deposits causes a great depth, over 700m, so that most of the oil shale reserves must be exploited using the underground methods. [7] High costs in the underground operations and complexity of production proc- No 1, 2010. 50 MINING ENGINEERING
Page 2 and 3: INSTITUT ZA RUDARSTVO I METALURGIJU
Page 4 and 5: KOMITET ZA PODZEMNU EKSPLOATACIJU Y
Page 6 and 7: Analizirajući ovaj način uzorkova
Page 8 and 9: SADRŽINA UPROŠĆENOG RUDARSKOG PR
Page 10 and 11: COMMITTEE OF UNDERGROUND EXPLOITATI
Page 12 and 13: area is constantly increased. Figur
Page 14 and 15: CONTENT OF THE SIMPLIFIED MINING PR
Page 18 and 19: U morfološkom smislu, teren predst
Page 20 and 21: Rezultati terenski istraživanja i
Page 24 and 25: In morphological terms, the terrain
Page 26 and 27: GEO-MECHANICAL FEATURES OF THE TERR
Page 30 and 31: Sl. 3. Smičući naponi u konstrukc
Page 32 and 33: Na modelu bojom su razgraničeni od
Page 36 and 37: Figure 3. Shear stresses in collect
Page 38 and 39: Dumped material and collector eleme
Page 42 and 43: PODRUČJE ISTRAŽIVANJA Aleksinačk
Page 44 and 45: Da bi se izbor otkopne mehanizacije
Page 46 and 47: lansnih rezervi uglja, a druga za g
Page 48 and 49: veličina i takođe zahteva neophod
Page 54 and 55: esses, require the use of modern sy
Page 56 and 57: • method without underground room
Page 58 and 59: directly used to drive power plants
Page 62 and 63: gde je: Δ - nasipna masa uzorka; m
Page 64 and 65: D (%) 100 90 80 70 60 50 40 30 20 1
Page 68 and 69: Where is: Δ - volumetric density o
Page 70 and 71: D (%) 100 90 80 70 60 50 40 30 20 1
Page 74 and 75: PRORAČUN STABILNOSTI SOFTVEROM GEO
Page 76 and 77: Sl. 6. Izgled klizne ravni i koefic
Page 80 and 81: CALCULATION OF STABILITY BY THE SOF
Page 82 and 83: Figure 6. View of sliding plane and
Page 86 and 87: kon sulfatizacije, postignut je sle
Page 90 and 91: Table 2. Degrees of metal leaching
Page 94 and 95: 70%. Dreniranje izdani vrši se po
Page 96 and 97: do kote K+656 m gde su postavljene
Page 100 and 101: is very abundant feeding aquifers.
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Start-minute maximum intensity of d
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Figure 3. Operation diagram of pump
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KOMITET ZA PODZEMNU EKSPLOATACIJU Y
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Zlato u koncentratu kg - 27,988 12,
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Na samlevenim uzorcima topioničke
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COMMITTEE OF UNDERGROUND EXPLOITATI
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Dry concentrate t 5,226 10.563 5.82
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Sadržaj klase -75μm , % 100 80 60
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Tab. 1. Koordinate temena eksploata
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Eksploatacija ležišta rude bakra
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Figure 3. Mutual position of open p
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underground water in the first wate
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gde su: v r - brzina protoka: u r -
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z and r - cylindrical coordinates
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da zaštiti podzemne vode od kontam
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• Otpadne vode od samog postrojen
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Practically, the “in-situ” expl
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• Waste water created during the
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geotektonska zona prema severoistok
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Osmatrani režim izdašnosti i temp
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Sl. 4. Kružni dijagram hemijskog s
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15. Nikl (Ni) 0,012±0,00500 UP-919
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alneoterapijskih i sportsko-rekreat
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phase are presented by andesite bas
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Figure 1. Hydro-geology maps of the
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Spring 2 Figure 3. Circle diagram o
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12. Lead (Pb)
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ecreational activities. The beginni
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UTICAJ GRANULOMETRIJSKOG SASTAVA ML
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SADR@AJ CONTENS D. Sokolović, D. E
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Institut za rudarstvo i metalurgiju Bor

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