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2003, iss. 1-2, pp. 83-85
Correlation relationship between permanence of drill bit and index of rock quality (RQD) per deer
aUniversity of Priština - Kosovska Mitrovica, Faculty of Technical Science, Serbia
bUniversity of Belgrade, Faculty of Mining and Geology, Serbia
Keywords: drilling; bits; rock; hardness; quality
This work presents a possibility of establishment the correlation relationships between permanence of drill bits and index of rock quality (RQD) per Deer. Permanence of drill bit is followed, at broader locality of the Kopaonik massif in working media, by compressive strength of 23-160 Mpa, i.e. coefficient of rock hardness per Protogakon¨s of f=2.3-16. Drilling was carried out by the use of RK-28 hammer drill, and drill-hole diameter was d=32 mm. By analyzing the obtained results, graphical and analytical dependence were established between permanence of drill bit and the most important parameters of rock mass.
Jovanović, P. (1980) Mehanički postupci razaranja stena pri izvođenju rudarskih radova - teoretski principi sa primerima - bušenje, rezanje, struganje i kopanje. Beograd: Rudarsko-geološki fakultet
Jovanović, P. (1990) Izrada jamskih prostorija. Beograd: Rudarsko-geološki fakultet / RGF, knjiga I
Savić, L.D. (1992) Uticaj tehničkih parametara na brzinu udarnog bušenja u različitim stenskim sredinama. Beograd: Rudarsko-geološki fakultet / RGF, doktorska disertacija


article language: Serbian
document type: unclassified
published in SCIndeks: 02/06/2007

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