RESEARCH OF DETONATION PARAMETERS OF EMULSION EXPLOSIVES POREMIT 1A

Abstract

The article presents the main parameters and results of the study of the detonation velocity of emulsion explosives Poremit 1A in cardboard tubes with
a diameter of Ø100 mm during a large-scale blast
in the conditions of the Asbestovsky open pit of
PJSC «Uralasbest». Detonation velocity measurements were carried out by the rheostat method using a set of equipment: a VODMate digital detonation velocity meter and a VOD PROCABLE
GREEN sensing cable. Also presented are the results of tests of the charges in cardboard tubes of
an emulsion explosive Poremit 1A for the completeness of detonation, initiated by different boosters, which were carried out simultaneously with the
measurements of the detonation velocity. Based on
the measured values of the detonation velocity, the
geometric parameters of the emulsion explosive
charges, and the actual density, the main detonation parameters of the emulsion explosives were
calculated for the Poremit 1A: mass velocity and
sound velocity in detonating products, detonation
pressure, specific heat of explosion at constant
volume, volume of gaseous detonation products,
covolume, explosion temperature, flow time, and
width of the chemical reaction zone, as well as the
critical diameter of the emulsion explosive charge.
The calculated values of the critical diameter of the
emulsion explosive charge confirm the values of the
critical diameter of detonation in the steel shell
according to the specifications.