FORECAST METHOD OF MINE IMPACT IN MINES AND SHAFTS Russian patent published in 2020 - IPC G01V11/00 E21F5/00 G01V9/00 

FIELD: mining.

SUBSTANCE: claimed invention is intended to determine the place of possible explosion of methane accumulated under the mine working surface and can also be used in geophysics for search and exploration of hydrocarbons with assessment of depth of productive deposit position. Disclosed is a method of predicting rock impact in mines, consisting in remote recording of seismoelectric effect from gas bubble accumulated in the region of development and determination of its coordinates. To implement the method on the Earth's shaft field surface in at least two spaced points using the electromagnetic field sensor placed in them and a three-coordinate geophone are used to simultaneously receive noise signals of electric and seismic fields in three coordinates. Computer determines their cross-correlation coefficients (CCC), from which CCC modules and angles of their directions in space are determined. Upon occurrence of CCC module maximum value explosion threat is predicted, wherein the coordinates of the expected explosion are determined through angles of directions and the point of intersection of the CCC modules obtained in two observation points spaced along the surface of the Earth.

EFFECT: technical result is increase in reliability of forecast of mine impact or explosion in mines from piles accumulated in the area of gas bubble with determination of its coordinates, as well as high accuracy and efficiency of prediction due to combined use of electrical and acoustic noise, which due to their correlation eliminates the effect of other industrial noise.

1 cl, 1 dwg