DEVICE TO RECORD ELECTROMAGNETIC RADIATION ARISING DURING DAMAGE OF ROCKS BY DRILLING, AND METHOD OF ITS APPLICATION Russian patent published in 2013 - IPC G01N3/08 G01N27/00 

FIELD: mining.

SUBSTANCE: device includes a loading device, comprising a metal body connected with a grounded base, a recording system comprising amplifiers, an analogue-to-digital transducer, a computer and screened cables. At the same time the loading device comprises a rock-breaking tool installed on a drilling machine, and a system of axial load supply comprising the following serially connected component: a pulley of axial load feed, a system of blocks and a system for suspension of weights installed on the frame. Also the device comprises a closed circulation system for bottomhole cleaning and cooling of the rock-breaking tool, a recording system comprising a pressure gauge, a phototach, a vibration sensor, a channel for registration of a permanent component of current and a channel for recording of an alternating component of current. The method includes installation of a sample in a clamp, deformation of a sample with the help of a loading device, registration of an arising electromagnet signal with a registration system. At the same time, setting experiment parameters, the initial and final positions of the axial load feed system are marked, accordingly at the start and end of the experiment, a boring pump motor is switched on, power is supplied to a three-phase transformer, from which power is then sent to a motor of a drilling machine, the rock-breaking tool is put in contact with the sample, and the required axial load is set, frequency of rock-breaking tool rotation is fixed by the phototach, pressure of the flushing liquid is recorded with the pressure gauge, plant oscillations are fixed by a vibration sensor, and along the channels for DC and AC the generated electromagnetic radiation is detected.

EFFECT: possibility to imitate loading of a sample with drilling, with variation of the experiment mode, under permanent registration of electromagnetic radiation parameters in process of sample damage, in the form of permanent and alternating components of current, and also the value applied to the load sample.

2 cl, 7 dwg