METHOD FOR DETERMINING ABRASIVENESS OF ROCKS Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: method includes affecting rock and its destruction by rotary indenter, measuring power of acoustic oscillations in face-adjacent zone in frequencies range 7-20 kHz - W_A and speed of relative movement of indenter and rock - v_p. in process of destruction of rock total power, realized during destruction of rock P_A is measured, abrasiveness coefficients of rock are measured: specific acoustic energy W_AV, produced during destruction, by division of power of acoustic oscillations W_A on speed of relative movement of indenter and rock; energy distribution coefficient K_p by dividing power of acoustic oscillations W_A on power P_A, limits W_AV and K_p for rock groups are set, characterized by certain abrasive effect on rock-destroying tool, related to its resource and wear type, by comparing industrial data of tool processing from different rocks, abrasiveness of rock is determined by relating it to appropriate group of abrasiveness in accordance to measured values W_AV and K_p if both values concurrently are within set limits.

EFFECT: higher precision, higher durability, higher efficiency, broader functional capabilities.

2 dwg, 4 tbl