METHOD OF DEFINING OF INDUSTRIAL EXPLOSIVE RELATIVE WORKING EFFICIENCY Russian patent published in 2010 - IPC F42B35/00 F42D3/04 

FIELD: explosives.

SUBSTANCE: invention can be used in mineral resource industry for testing of industrial explosives (EC) made at the places of their use. The proposed method includes location of EC charge into shell cavity, EC charge blasting in it, defining the volume of extended cavity and calculation of relative working efficiency of EC charge. As the shell there used is steel seamless pipe with diametre not less than 50 mm, wall thickness not less than 5 mm and length not less than 10 charge diametres. Over the pipe at a distance of 0.54-0.60 of charge length away from initiation beginning there tightly arranged is gauging ring made of steel 45 with diametre not less than 150 mm, height 30-50 mm. Note that there performed is the blasting of EC tested charge and 6ZHV ammonite charge as reference one and there defined are the changed volumes of inner cavities of gauging rings of tested and reference EC charges. The calculation of explosive working capacity is performed in relation to the volumes of inner cavities of gauging rings of tested and reference EC charges after explosion. Note that additionally there measured is EC charge detonation speed for detonation process completeness control.

EFFECT: provision of relative working capacity defining of modern industrial large particle explosives.

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