METHOD FOR PREDICTING DESTRUCTION OF ROCK MASSIF Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: method includes recording signals of electromagnetic radiation in time, measuring amplitudes thereof as well as durations from load start and building spectral-time matrix of spectral amplitude of said signals on basis of results, with growth of frequency and time. On said matrix frequency sub-ranges are marked with growth of frequencies, in each of which equal spectral amplitudes of signals are marked, area taken by these is contoured with closed line and its size is determined, then relation of dimensions of area of S_n n frequency sub-range (n=2, 3, 4,…) to area S₁ of first frequency sub-range is determined. With growth of relations of these areas start of intensive crack forming process is detected. Critical relation, at which transfer from intensive cracks forming process to rock massif splitting process occurs, is relation S_n=(2-4)S₁, on basis of which splitting of areas on said matrix is predicted in greater frequency sub-ranges, to characterize destruction of rock massif.

EFFECT: higher precision.

1 dwg