DEVICE FOR ASSESSING THE STRESS-DEFORMED STATE OF A MINING MASS Russian patent published in 2021 - IPC E21C39/00 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry and can be used for field research to determine the stress-strain state of the rock mass. The device contains a housing, a spacer unit and a measuring unit located in the housing in series. The body of the measuring unit is made in the form of a hollow cylinder, inside it there is a removable cover that divides it into two parts, two more covers are removably installed at the top and bottom of the housing, and round holes are made in its side surfaces at an angle of 90° relative to each other, in two rows offset from each other at an angle of 45°, in which the frames are installed, which are fixed with the possibility of removal and in them on the spring there are bushings with ferrite cores in the inductor, which is mounted on the rack together with the board. Between the fixing unit and the measuring unit in the center of the covers, a stand is installed inside the measuring unit, on which inductors with a ferrite core and boards are installed, then a reducer motor is fixed, which is connected to the gearbox shaft, through a hole in the cover from the outside it is connected to a flange, in the upper part which has at least two built-in connectors for connecting power and data cables. The fixing unit and the measuring unit are connected to each other through movable rods with springs, which are installed in the holes of the covers, the supply cable is connected through the connector to the measuring unit through a gearbox to the fixing unit, the information cable is connected to the measuring unit to the boards through the connector.

EFFECT: creation of a device with increased reliability and an increase in the accuracy of the results obtained.

1 cl, 6 dwg