Abrasion

Regression Type

Variables Used

Coefficient of Determination R²

Predicted Abrasion Equation

Correlation Coefficient R

Linear

UCS

0.4539

46.8348 − 0.1227 *UCS

−0.6737

Multiple

All

0.6424

72.126 − 0.2574 *UCS − 1092.9051 *RQD − 0.0348 *Hardness − 0.3438 *Friction Angle + 0.8909 *cohesion

−0.8015

Multiple

All except RQD

0.6372

18.3729 − 0.7031 *UCS + 0.3611 *Hardness + 0.5880 *Friction Angle + 0.5880 *cohesion

−0.7983