Institut za rudarstvo i metalurgiju Bor

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Start-minute maximum intensity of daily rainfall for the period of 50 years in the period of 30 minutes is 4.12 mm / min, and medium intensity rainfall in the period of 8 hours, authoritative for the calculation of normal flow caused by atmospheric precipitation is 0.08 mm / min. Maximum daily amount of surface water caused by atmospheric precipitation, which is released into the open pit is 14 000 m 3 . The amount of atmospheric water caused by rainfall that reaches the prospect of normal inflows is 735 m 3 . Maximum inflow of ground water is estimated at 500 l/s. Normal influx of ground water is 40 l/s. Maximum daily inflow of underground water is during the extreme rainfalls and is 43 200 m 3 . Normal daily inflow of underground water is 3 450 m 3 . Total maximum inflow into the pit of surface and ground water is considered as the relevant for dimensioning the pumping plant at the open pit, amounts to 57 200 m 3 . SYSTEM FOR WATER PUMPING At the open pit “Potrlica“ , two types of pump, manufactured by “Jastrebac” from Niš are in operation: • Pipe pumps BP 300 – 1 engine power 132 kW, and • Centrifugal pumps VPN 251 – 3 engine power 475 kW. System for water pumping is the following [2]: • The temporary water sump is located at the lowest bench of open pit with 2 pumps, type • BP 300 – 1. Water is pumped from bench level K+632 m, pipeline length is 50 m. • The water from auxiliary water sump is pumped into the main water sump at level K+643 m, where 4 pumps, type BP 300 – 1, are located. • From the main water sump, the water is pumped through pipeline, length 160 m to the level K+656 m where 4 pumps, type VPN 251 – 3, are installed. The pumps BP – 300 – 1 and VPN 251 – 3 are directly connected with pipeline. • From the level of K +656 m, the water is pumped to the water sump at level +758 K m, by pipeline of 970 m length. One section of pumps for water pumping from the main water sump to the settling tank are connected by a serial BP 300- 1 pump and VPN 251 – 3 pump. Such four section are in operation at the open pit. Figures 1 and show the line diagram of drainage system and spatial position of pump facilities, and Figure 3 shows the operation diagram of one section. Operation points of pumps at auxiliary and section on the main water sump are given in Table 2. No 1,2010. 99 MINING ENGINEERING
Figure 1. Location of pumping facilities at the open pit “Potrlica” Figure 2. Line diagram of pumping facilities at the open pit “Potrlica” No 1,2010. 100 MINING ENGINEERING
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INSTITUT ZA RUDARSTVO I METALURGIJU
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KOMITET ZA PODZEMNU EKSPLOATACIJU Y
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Analizirajući ovaj način uzorkova
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SADRŽINA UPROŠĆENOG RUDARSKOG PR
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COMMITTEE OF UNDERGROUND EXPLOITATI
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area is constantly increased. Figur
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CONTENT OF THE SIMPLIFIED MINING PR
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U morfološkom smislu, teren predst
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Rezultati terenski istraživanja i
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In morphological terms, the terrain
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GEO-MECHANICAL FEATURES OF THE TERR
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Sl. 3. Smičući naponi u konstrukc
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Na modelu bojom su razgraničeni od
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Figure 3. Shear stresses in collect
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Dumped material and collector eleme
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PODRUČJE ISTRAŽIVANJA Aleksinačk
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Da bi se izbor otkopne mehanizacije
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lansnih rezervi uglja, a druga za g
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veličina i takođe zahteva neophod
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Page 52 and 53: exploitation, two variants of this
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 60 and 61: KOMITET ZA PODZEMNU EKSPLOATACIJU Y
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 66 and 67: COMMITTEE OF UNDERGROUND EXPLOITATI
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.
Page 104 and 105: Figure 3. Operation diagram of pump
Page 108 and 109: Zlato u koncentratu kg - 27,988 12,
Page 110 and 111: Na samlevenim uzorcima topioničke
Page 114 and 115: Dry concentrate t 5,226 10.563 5.82
Page 116 and 117: Sadržaj klase -75μm , % 100 80 60
Page 120 and 121: Tab. 1. Koordinate temena eksploata
Page 122 and 123: Eksploatacija ležišta rude bakra
Page 126 and 127: Figure 3. Mutual position of open p
Page 128 and 129: underground water in the first wate
Page 132 and 133: gde su: v r - brzina protoka: u r -
Page 136 and 137: z and r - cylindrical coordinates
Page 140 and 141: da zaštiti podzemne vode od kontam
Page 142 and 143: • Otpadne vode od samog postrojen
Page 146 and 147: Practically, the “in-situ” expl
Page 148 and 149: • 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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