Correlation of specific ampere draw with rock brittleness indexes in rock sawing process

• Autorzy: Mikaeil R. , Ozcelik Y. , Ataei M. , Yousefi R.

Warianty tytułu

PL

Korelacja określonego poboru mocy ze wskaźnikiem kruchości skał w procesie piłowania skał

• Języki publikacji: EN

Abstrakty

EN

The aim of this study is to investigate the effect of the rock brittleness indexes on the specific ampere draw of the circular diamond saws. In this study, twelve rock types belonging to granite and carbonate rock were cut with two different types of circular diamond saws on a fully instrumented laboratory-sawing rig at different feed rate and depths of cut. Rock samples were collected from factories from Iran for laboratory tests and uniaxial compressive strength and tensile strength were determined. The brittleness of B1 (the ratio of compressive strength to tensile strength), B2 (the ratio of compressive strength minus tensile strength to compressive strength plus tensile strength), and B3 (the area under line in relation to compressive strength and tensile strength) were evaluated. The relations between specific ampere draw and rock brittleness indexes were investigated using simple regression analysis. The results show that, there is no strong correlation between the specific ampere draw values and the brittleness of B1 and B2 values in carbonate rocks but there is a strong correlation between specific ampere draw and B3 while the specific ampere draw values of granite rocks are strongly correlated with all of brittleness indexes. It was concluded that the specific ampere draw values of granite and carbonate rocks can be reliably predicted by brittleness indexes and brittleness of B3, respectively.

PL

Celem badania jest przeanalizowanie wpływu wskaźników kruchości skał na określony pobór mocy diamentowych pił tarczowych. Dwanaście rodzajów skał granitowych i węglanowych piłowano przy pomocy dwóch różnych typów diamentowych pił tarczowych przy różnych prędkościach podawania i głębokościach cięcia w warunkach laboratoryjnych. Próbki skał zebrano z irańskich fabryk na potrzeby testów laboratoryjnych, podczas których określono wytrzymałość na ściskanie jednoosiowe i rozciąganie. Oceniono kruchość B1 (stosunek wytrzymałości na ściskanie do wytrzymałości na rozciąganie), B2 (stosunek różnicy wytrzymałości na ściskanie i wytrzymałości na rozciąganie do sumy wytrzymałości na ściskanie i wytrzymałości na rozciąganie) i B3 (obszar pod linią w relacji do wytrzymałości na ściskanie i wytrzymałości na rozciąganie). Relacje pomiędzy określonymi poborami mocy i wskaźnikami kruchości skał zostały zbadane z zastosowaniem prostej analizy regresyjnej. Wyniki wskazują, że nie zachodzi silna korelacja pomiędzy określonymi wartościami poboru mocy, a kruchością wartości B1 i B2 w skałach węglanowych, ale zachodzi silna korelacja między określonym poborem mocy, a B3. Określone wartości poboru mocy dla skał granitowych są silnie skorelowane ze wszystkimi wskaźnikami kruchości. Wyciągnięto wniosek, że określone wartości poboru mocy dla skał granitowych i węglanowych można z dużą dokładnością przewidzieć odpowiednio za pomocą wskaźników kruchości i kruchości B3.

Słowa kluczowe

EN

specific ampere draw; rock brittleness; regression analysis; granite; carbonate rocks

PL

określony pobór mocy; kruchość skał; analiza regressji; granit; skały węglanowe

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2011
• Tom: Vol. 56, no 4
• Strony: 777--788
• Opis fizyczny: Bibliogr. 55 poz., rys., tab., wykr.

Twórcy

autor

Mikaeil R.

autor

Ozcelik Y.

autor

Ataei M.

autor

Yousefi R.

• Faculty of Mining, Urmia University of Technology, Urmia, Iran,

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