Assessment of abrasiveness for research of rock cutting
نویسندگان
چکیده
Rock abrasiveness is ability of rock to wear down the working tool during the mutual interaction between the working indentor and the rock in the mechanical rock cutting process. The cutting indentor is worn down during the interaction, which changes its geometric dimensions causing the enlargement of a contact area between the tool and the rock surface. The changes in these dimensions consequently alter the rate of advance of the drilling machine and the specific cutting energy. We have determined the abrasiveness according to the norm ON 44 1121 (1982) on the testing device constructed at the Institute of Geotechnics SAS.
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