DETERMINATION OF ABRASIVENESS OF ROCKS WITH THREE DIFFERENT TEST METHODS

In order to achieve the expected benefits from mechanical excavation machines, these machines must be selected in accordance with the characteristics of the excavated rocks. Highly abrasive Rocks cause fast cutter wear in short time. This increases the chisel consumption in excavation and reduces the efficiency, and thus increases in excavation cost. In this study, Cerchar abrasiveness index (CAI), abrasion value (AV) and Schimazek wear index (F) tests were carried out on 9 igneous and sedimentary rocks samples from Zonguldak Region. The results then evaluated with regression analysis to determine the relationship between different abrasion index values. According to the test results, rocks were classified as abrasive and extremely abrasive. The statistical analysis showed strong linear relationships between Schimazek wear index - Cerchar abrasiveness index, and Schimazek wear index - abrasion value