METHOD FOR CONTROLLING THE ADHESION OF ANCHOR BOLTING TO A ROCK MASS Russian patent published in 2023 - IPC G01N29/04 E21C39/00 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and is intended to control the adhesion of rock bolts to a rock mass. The method includes pulse excitation of vibrations in the rock bolt, binder mass and rock mass by means of a test signal source, digital registration of a sequence of time readings of the rock bolt vibration response signal to the pulse test signal, conversion of time readings into a digital spectrum and its spectral analysis. At the same time, the maximum value of the amplitude of the digital spectrum and the frequency corresponding to it are determined, to which the nearest lower and upper frequencies of the digital spectrum and the corresponding values of the amplitudes of the digital spectrum are determined, the frequency f₀ corresponding to the maximum value of the amplitude of the approximating spectrum, the acoustic quality factor Q and the maximum value of the amplitude A₀ are determined. approximating spectrum, according to which the adhesion of the anchor bolting and the rock mass is evaluated.

EFFECT: increasing the accuracy of monitoring the adhesion of anchor bolting to a rock mass by increasing the stability of readings and reducing the error in determining the informative parameters for which control is carried out.

1 cl, 5 dwg