METHOD FOR NON-DESTRUCTIVE CHECK OF ANCHOR REINFORCED CONCRETE SUPPORT Russian patent published in 2013 - IPC E21D20/02 

FIELD: mining.

SUBSTANCE: method to detect quality of installation of a reinforced concrete anchor in hard rocks by the non-destructive method, consists in the fact that the coefficient is determined, which characterises quality of space fill between the anchor and hard rock. For this purpose they identify transition electric resistance of the anchor with the help of an electric measurement instrument by means of serial measurements of electric resistance accordingly between the anchor and at least two electrodes in turns, and also between the electrodes. At the same time the first electrode is arranged from the measured anchor at the distance exceeding the depth of the anchor 2÷3 times, the second electrode and subsequent ones are arranged from the measured anchor and the first electrode at the distance exceeding the anchor depth by 3÷5 times. Measured transition electric resistance of the anchor is compared with the rated (theoretical) electric resistance.

EFFECT: higher availability of assessment of anchor reinforced concrete support installation quality.

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