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DEPENDENCY OF SPECIFIC ENERGY OF ROCK CUTTING ON SPECIFIC DRILLING ENERGY

Authors: Antoljak, Davor; Kuhinek, Dalibor; Korman, Tomislav; Kujundžić, Trpimir;

DEPENDENCY OF SPECIFIC ENERGY OF ROCK CUTTING ON SPECIFIC DRILLING ENERGY

Abstract

Specifična energija veličina je koja povezuje radne veličine stroja sa značajkama stijene u kojoj stroj radi, a jednaka je ukupnome radu potrebnom za razrušavanje jediničnoga volumena stijene. Pretpostavlja se da kod strojeva koji imaju istu ili sličnu mehaniku razrušavanja stijena, a koji se koriste za različite namjene (npr. rezanje i bušenje stijena), po stoji znatna zavisnost između specifičnih energija. Prilikom eksploatacije arhitektonsko-građevnoga kamena često se koristi lančana sjekačica i rotacijska bušilica, tj. strojevi koji služe za rezanje, odnosno bušenje stijene, a čija je mehanika razrušavanja vrlo slična. Radi određivanja zavisnosti specifične energije rezanja stijena o specifičnoj energiji bušenja provedena su preliminarna laboratorijska ispitivanja na uređaju za pravolinijsko rezanje stijena i laboratorijskoj bušilici kojima je simulirano rezanje stijena lančanom sjekačicom, tj. bušenje stijena rotacijskim bušenjem. Analizom mjernih rezultata dobivene su smjernice za nastavak laboratorijskih ispitivanja odnosno provedbu terenskih ispitivanja.

Specific energy is the measure which connects the operating parameters of the machine with the characteristics of the rock in which the machine works and is equal to the total work required to break a unit volume of the rock. It is assumed that in machines with the same or similar rock breaking mechanics used for different purposes (e.g. cutting and drilling of rocks), there is a significant dependence on their specific energy values. In the exploitation of dimension stone a chain saw and a rotary drill are often used, i.e. the machines for rock cutting or rock drilling whereas their mechanics of rock breaking is very similar. In order to determine dependence of the specific energy of rock cutting on the specific drilling energy, preliminary laboratory tests were carried out on a linear cutting machine and a laboratory drill with simulated cutting of rocks with a chain saw, and drilling by rotary drilling. The analysis of the measurement results has provided the guidelines for the continuation of laboratory testing, i.e. field testing.

Country
Croatia
Related Organizations
Keywords

QE1-996.5, Mining engineering. Metallurgy, rock breaking ; drilling ; cutting ; specific energy, TN1-997, razrušavanje stijena, Geology, drilling, specific energy, bušenje, rezanje, cutting, specifična energija, rock breaking

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    popularity
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    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
11
Top 10%
Top 10%
Top 10%
Green
Published in a Diamond OA journal