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|Title:||Experimental assessment of rock-cutting characteristics by strength- and -fracture-driven mechanisms|
|Citation:||Proceedings Africa Australia Technical Mining Conference : Bridging the technology Divide Through Collaboration 2015, 2015 / pp.1-6|
|Publisher:||The Australasian Institute of Mining and Mettallurgy|
|Conference Name:||Africa Australia Technical Mining Conference (ATA) (11 Jun 2015 - 12 Jun 2015 : Adelaide, SA)|
|H Munoz, A Taheri, and E Chanda|
|Abstract:||This study presents the results of laboratory testing on a range of soft and hard rocks by uniaxial compressive strength and polycrystalline diamond compact cutting tests of intact rocks. It was found that by coupling rock stress-strain and cutting response, the shear strain energy and stress intensity factor can satisfactorily quantify the minimum energy required to cut rocks. As a result, shear, fracture and friction energy dissipation are considered to take place in the rock during steady cutting. Steady cutting is characterised by a linear-scaling response of the cutting force with the depth of cut. Therefore, efficient cutting was assessed from rock shear strength and fracture toughness.|
|Rights:||© The Australasian Institute of Mining and Mettallurgy 2015.|
|Appears in Collections:||Civil and Environmental Engineering publications|
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