METHOD OF MEASURING DETONATION VELOCITY OF BOREHOLE CHARGE WITH DIRECT INITIATION Russian patent published in 2024 - IPC E21C37/16 F42D3/04 

FIELD: measurement technology.

SUBSTANCE: invention relates to a method for measuring detonation velocity of a borehole charge during direct initiation. Method includes forming a charging well with an explosive charge and a measuring coaxial cable, installed to measure speed of detonation of explosive charge and connected to measuring device. Measuring device is based on a pulse reflectometry method. Measurement of detonation speed is carried out at the upper location of the gunman in the charging well. One measuring coaxial cable is installed in the charging well through the additionally drilled well on the side of the bench slope, the other measuring coaxial cable is on the side of day surface. Cables are connected to measuring instruments based on pulse reflectometry method. Ends of the measuring coaxial cables are equipped with magnets for drawing them from the lower part of the charging well to the mouth of the charging well and fixation on the day surface. Measuring instruments based on the pulse reflectometry method are connected to an automated system for calculating the accuracy of detonation velocity parameters, determination of measurement error and calculation of rational parameters of explosive charge and gun.

EFFECT: increased accuracy of measurement of explosive charge actuation fixation.

1 cl, 3 dwg