FIELD: mining.
SUBSTANCE: method involves action on a mine rock and its destruction with a rotating indenter under load, determination of hardness parameters using the value of applied load and area of contact surface of the indenter. Measurements are made immediately during drilling in a differential form: mechanical drilling speed or time of duration of a certain depth interval, a value of speeds or time is adjusted by variation of load on a bit; the bit load value is measured at moment of equality of speeds or times and hardness of mine rock is determined as per an algorithm.
EFFECT: optimisation of a well drilling process.
4 cl, 1 dwg
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