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

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MINING AND METALLURGY INSTITUTE BOR YU ISSN: 1451-0162<br />COMMITTEE OF UNDERGROUND EXPLOITATION OF THE MINERAL DEPOSITS UDK: 622<br />UDK: 622.272:666.972 (045)=20<br />Abstract<br />Dragan Ignjatović*, Milenko Ljubojev * , Lidija Đurđevac Ignjatović * , Dušan Tašić *<br />PHYSICAL AND MECHANICAL PROPERTIES OF<br />ANCHOR MIXTURE APPLIED IN THE ORE BODY “T” **<br />One of the materials, used for ensuring the stability in exploitation the ore body “T“ is the anchor<br />mixture. It was necessary to check the physical and mechanical properties of anchor mixture<br />because of its participation in the rock mass stability. The results of these tests are present in this<br />paper.<br />Key words: anchor mixture, ore body “T”, physical and mechanical properties<br />INTRODUCTION<br />Concrete is a heterogeneous, multiphase<br />material, obtained by binding various<br />types of aggregates with the cement<br />paste. Aggregate present a linear elastic<br />component and the cement paste is high<br />elastic component.<br />Mixing of concrete components in the<br />controlled conditions is aimed to obtain<br />more complete homogenization of mixture<br />with properly bound aggregate and cement<br />paste.<br />On the request of the company<br />Polimerinžekt Ltd. from Bulgaria, which<br />carried out the works on ensuring the rock<br />mass stability in exploitation the “T” ore<br />body in the Bor pit mine, the samples of<br />anchor mixture were tested on a compressive<br />strength.<br />Samples were delivered by Polimerinžekt<br />Ltd.<br />TESTS RESULTS<br />Anchor mixture samples were delivered<br />to the Laboratory for Geomechanics.<br />Dimensions of the samples were 7.3 cm<br />(diameter) and 7.5 cm (height), Figure 1.<br />Figure 2 presents the appearance of<br />samples after testing.<br />* Mining and Metallurgy Institute Bor<br />** This paper is produced from the project no. 33021 “Researching and monitoring changes in<br />stress-deformation condition of rock massif “in-situ” around undergraund facilities with development<br />of model with special emphasis on Krivelj river tunnel and Bor pit”, which is funded by<br />means of the Ministry of Education and Science of the Republic of Serbia<br />No 4, 2011. 33<br />MINING ENGINEERING
Fig. 1. Anchor mixture samples before testing<br />Fig. 2. Samples after testing<br />No 4, 2011. 34<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 40 and 41: This anchor mixture will be used in
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
Page 52 and 53: Structural characteristics Det
Page 56 and 57: 305 -100 Sl. 1. Izgled za
Page 58 and 59: Nakon zapunjavanja preostalog prost
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Page 64 and 65: 305 -100 Fig. 1. View of
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Page 68 and 69: 4. CONCLUSION Fig. 4. Disposit
Page 72 and 73: Dobivanje uglja iznad raskršća ot
Page 74 and 75: matematičkom modelu, a međusobne<
Page 76 and 77: 4. ZAKLJUČAK Proračunom dobi
Page 80 and 81: this stage is carried out alternate
Page 82 and 83: Rearranging the expression for the<
Page 84 and 85: 4. CONCLUSION Calculation of t
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Tabela 1. Pregled polaznih tehno ek
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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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