Rudarski radovi br 4 2011 - Institut za rudarstvo i metalurgiju Bor

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This anchor mixture will be used in the<br />“T“ore body. The applied concrete was<br />PC 42.5N and complete prepared injection<br />mixture for anchors, ROFIX 995.<br />Compressive strength test was carried<br />out on a concrete after 7 days of maturing,<br />as it was requested by Polimerinžekt Ltd.<br />Testing was carried out according to the<br />Standard SRPS U.M2.008: 1994. The results<br />are shown in Table 1.<br />Table 1 Test results<br />Sample designation<br />Sample dimensions<br />d x h [mm]<br />Failure<br />force<br />P [kN]<br />Uniaxial<br />compressive<br />strength<br />σp [MPa]<br />Bulk<br />density<br />[kg/m 3 ]<br />Rate of longitudinal<br />waves<br />VL [m/s]<br />1. 151.0 36.09 1940.0 3440,0<br />2. 7.3x7.5 147.0 35.14 1913.0 3424,0<br />3.<br />131.0 31.32 1936.0 3318,0<br />Mean values: 143.0 34.18 1929.67 3394.0<br />CONCLUSION<br />Fresh concrete mass shows the certain<br />characteristics which affect the other<br />phases of production process. Two questions<br />are often asked:<br />1. Which properties of concrete are<br />important from the standpoint of rational<br />use the technological equipment?<br />2. Which of these characteristics is the<br />most important for quality assurance of<br />harden mass?<br />It could be said that the most important<br />characteristics of concrete are:<br />- homogeneity<br />- workability,<br />- segregation,<br />- binding time,<br />- temperature,<br />- compressive strength.<br />According to the obtained results, it<br />could be said that tested anchor mixture<br />satisfies the criteria for use in the “T“ ore<br />body.<br />REFERENCES<br />[1] Report on Mechanical Properties of<br />Injection Mass, Anchor Mixture and<br />Concrete Flow that will be Used in the<br />”T“ Ore Body – Level 95 of the Bor Pit,<br />Bor, February 2011 (in Serbian)<br />[2] M. Ljubojev, R. Popović, M. Bugarin,<br />Deformation Pressure, Support Rigidity<br />and Rock Massif Characteristics of a<br />Route the Krivelj River Tunnel, Mining<br />Engineering 2/2008, 123-128, Bor,<br />2008 (in Serbian)<br />No 4, 2011. 35<br />MINING ENGINEERING
[3] M. Ljubojev, R. Popović –<br />Geomechanical Basis, RTB Bor,<br />Copper Institute Bor, 2006 (in Serbian)<br />[4] R. Popović, M. Ljubojev – Principles of<br />Solving the Geomechanical Problems,<br />RTB Bor, Copper Institute Bor, 2007<br />(in Serbian)<br />[5] D. Ignjatović, M. Ljubojev, L.<br />Đurđevac Ignjatović, V. Ljubojev –<br />Physical and Mechanical<br />Characteristics of Concrete Flow,<br />Applied in the Ore Body “T“, 43rd<br />International October Conference on<br />Mining and Metallurgy, 116-119,<br />Kladovo, 2011<br />No 4, 2011. 36<br />MINING ENGINEERING
Page 2 and 3: INSTITUT ZA RUDARSTVO I METALURGIJU
Page 4 and 5: SADR@AJ CONTENS M. Bugari
Page 8 and 9: vršeno je sve do 1987. god. a kona
Page 10 and 11: MINING AND METALLURGY INSTITUTE BOR
Page 12 and 13: Based on realized geological drilli
Page 16 and 17: istočno od đerdapske navlake lež
Page 18 and 19: GEOLOŠKE KARAKTERISTIKE LEŽI
Page 20 and 21: Sl. 4. Teren u domenu ležišta gli
Page 22 and 23: Ispitivanje granulometrijskog sasta
Page 26 and 27: literature data, semi-detailed polu
Page 28 and 29: GEOLOGICAL CHARACTERISTICS OF
Page 30 and 31: Fig. 4. Field in the domain of clay
Page 32 and 33: Testing of grain-size distribution
Page 36 and 37: Ova ankerna smeša će biti koriš
Page 44 and 45: Tabela 2. Rezultati ispitivanja kam
Page 46 and 47: Sl. 4. Određivanje odnosa vlažnos
Page 50 and 51: Table 2. Test results of stone aggr
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5. ZAKLJUČAK Bilansne rezerve
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MINING AND METALLURGY INSTITUTE BOR
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Table 1. Summary of initial techno-
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5. CONCLUSION Balance reserves
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INSTITUT ZA RUDARSTVO I METALURGIJU
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odmah iza valjka, kome je jedan deo
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Sl.3. Tehnološka šema laboratorij
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further testing, the laboratory pla
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Fig. 3. Technological scheme of lab
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Međutim, na početku ćemo pojasni
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4.1.2. Klasifikacija po posljedicam
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ed Štaba službe spasavanja, zato<
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Tabela 3.[8] Vjerovatnost Ovim
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usiness policy of the company and o
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Table 1. NATURAL (workpla
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will occur from exposure to hazard
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ing to the overall economy. However
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and measures of their control can h
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Tabela 1. Rudne rezerve u ležišti
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Tabela 3. Proizvodnja pratećih pro
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Tabela 6. Prosečne neto zarade<br
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Table 1. Ore reserves in the active
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Table 3. Production of accompanying
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The average net wages have a tenden
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i izražava mogućnost da element t
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i p ( RZ t ) RZ = ma
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8. Iskop jama za temeije samce 1 2
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Pokazani postupak zatim analogno If it is not possible t
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Rz3 = Rz2+ t3 [ ] Rz3 = 3
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The difference in computation betwe
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Tabela 4. Zastupljenost objekata na
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8. TROŠKOVI SAOBRAĆAJNIH NEZ
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11. KRITERIJUMI VREDNOVANJA I 
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Tabela 15. Vrednosti kriterijumskih
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Table 3. Slopes of level Varia
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7. EXPLOITATION COSTS Exploita
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• changes in natural look of terr
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Fig. 2. Distribution of responses f
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7. 8. 9. 10. 11
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INSTITUT B O INSTITU
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JP PEU RESAVICA ЈП ПЕУ Р
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INSTRUCTIONS FOR THE AUTHORS M
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Rudarski radovi br 4 2011 - Institut za rudarstvo i metalurgiju Bor

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