METHOD FOR REMOTE MEASUREMENT OF STRESSES IN THE EARTH ENTRAILS THROUGH ABSORBING ROCK IN CONDITIONS OF STRONG INTERFERENCE Russian patent published in 2017 - IPC G01V11/00 

FIELD: geophysics.

SUBSTANCE: invention relates to geophysics and can be used in diagnostics of stress-strain state of the Earth entrails. In compliance with this method the value of stresses of a mine rock is estimated by the value of an acoustic-electromagnetic signal occurring during deformation of the rock under action of these stresses. For this purpose the obtained experimentally using a core of the working face from the surveyed well dependence of intensity of acoustic-electromagnetic radiation from the stress. Acoustic component of the acoustic-electromagnetic radiation from the well bottom to location of sensors is transmitted with an acoustic waveguide made of the well casing. Magnetic component of the acoustic-electromagnetic radiation from the well bottom is transmitted by means of a magnetic conductor made from the ferromagnetic well casing. Noise is registered of atmospheric-thunderstorm, magnetospheric and technogenic origins by a compensating antenna required for elimination of interference. To eliminate interference equalized are amplitude-frequency characteristics (AFC) of the signal and the compensating antennae. Using the obtained AFC corrected is data of the receiving and the compensating antennae to obtain purified from noise data of the magnetic component of the lithospheric signal. Obtained dependence of the magnetic and the acoustic components from the stress in the core samples and registration data of the magnetic and the acoustic components free from the effect of noise are used to estimate the value of stresses in the face rock.

EFFECT: technical result is higher accuracy of the obtained data.

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