Usporedba specifične energije rezanja, bušenja i piljenja arhitektonsko-građevnog kamena Plano

master's thesis

• Title: Usporedba specifične energije rezanja, bušenja i piljenja arhitektonsko-građevnog kamena Plano : diplomski rad
• Title (english): Comparison of specific energies for cutting, drilling and sawing Plano dimension stones : master's thesis
• Author: Filip Zeko
• Mentor: Trpimir Kujundžić (mentor)
• Committee member: Trpimir Kujundžić (predsjednik povjerenstva)
• Committee member: Tomislav Korman (član povjerenstva)
• Committee member: Zlatko Briševac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2024-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

Za eksploataciju mineralnih sirovina koriste se razni procesi razrušavanja stijene među koje spadaju rezanje, bušenje i piljenje. Sva tri procesa se javljaju u nekom obliku u kamenolomima arhitektonsko – građevnog kamena, gdje se primarni blokovi dobivaju kombinacijom lančane sjekačice, hidraulične rotacijske bušilice i dijamantne žične pile. Navedeni strojevi imaju različite radne veličine ali im je mehanika razrušavanja stijene gotova ista, pa je temeljem toga postavljena hipoteza kako su i specifične energije rezanja, bušenja i piljenja iste, jedina razlike je u putanji reznog elementa. U literaturi su pronađeni znanstveni radovi i doktorske disertacije u kojima su izvedena ispitivanja u kojima su se odredile specifične energije rezanja, bušenja i piljenja ali nije pronađen nijedan rad koji pokušava usporediti specifične energije sva tri procesa. U disertaciji Antoljak (2019) provedeno je terensko ispitivanje na kamenolomu Redi pored mjesta Plano u kojem su uz fizikalno-mehanička svojstva stijenskih uzoraka dobiveni i iznosi specifičnih energija rezanja i bušenja u ovisnosti o CERCHAR indeksu abrazivnosti. U znanstvenom radu Bagherpour i dr. (2020) izvedeno je ispitivanje specifične energije piljenja te je dobivena relacija u kojoj je abrazivnost izražena preko Schimazekovog faktora abrazivnosti. U literaturi su pronađena ispitivanja u kojima se iskazuju ovisnost CERCHAR i Schimazekovog faktora abrazivnosti, pomoću tih radova iznosi svih triju specifičnih energija se mogu izraziti preko Schimazekovog faktora abrazivnosti, preko tih relacija i podataka o svojstvima stijenskih uzoraka sa kamenoloma Redi iznosi za sve tri specifične energije se mogu uspoređivati.

Abstract (english)

In order to excavate mineral resources some sort of rock disintegration process has to be utilized, for example cutting, drilling or sawing. All three of the processes are present in some way, shape, or form in a dimension stone quarry, where the primary blocks are obtained through the usage of chainsaws, hydraulic rotary drills and diamond wire saws. These machines have vastly different work parameters, but the way they operate on a basic level is similar, so based on that a hypothesis can be made that the specific energies of cutting, drilling, and sawing are also similar, the only difference being in the trajectories of the cutting element. Scientific papers, in which the specific energies of cutting, drilling and sawing were individually being experimented on, were observed but no scientific paper was found where an author tried to compare all three of these specific energies at once. In a doctoral thesis by Antoljak (2019.) extensive laboratory tests and field measurements were carried out at a dimension stone quarry Redi near Plano, the result of which was data about the physical and mechanical properties of rock samples from the same quarry along with equations describing the relation between cutting and drilling specific energies as a function of CERCHAR factor of abrasivity. In a scientific paper by Bagherpour and others (2020) similar laboratory tests were carried out and the result was an equation that describes the relation between specific energy for sawing with various rock characteristics including Schimazek's factor of abrasivity. Papers made by other various authors which detail the relation between CERCHAR and Schimazek’s factors of abrasivity were observed. All three specific energies were expressed as a function of Schimazek's factor of abrasivity and together with the field data from Redi quarry can be further compared.

• Keywords: specifična energija; CERCHAR faktor abrazivnosti; Schimazekova F vrijednost
• Keywords (english): specific energy; CERCHAR factor of abrasivity; Schimazek factor of abrasivity
• Language: croatian
• URN:NBN: urn:nbn:hr:169:433707
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Mining engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-03-18 16:16:52