FIELD: mining.
SUBSTANCE: medium oscillations are registered. Frequencies of registered oscillations are compared with existing frequencies of medium oscillations in the absence of cracks, filled with liquid. Besides frequencies of inpounded interface waves, spreading over surfaces, at least one crack, filled with liquid, are determined as corresponding to substract resonance frequencies, at least, one crack, filled with liquid. Group velocity of the interface wave is calculated, that depends on crack width and properties of construction element and fluid. Typical size of the crack along spreading of the inpounded interface wave is calculated. Generation or existing of at least one crack, filled with liquid, is detected.
EFFECT: creation of effective detection method of generation or existing of cracks filled with liquid in the medium.
2 cl, 4 dwg
