METHOD FOR DETERMINING SENSITIVITY OF BLASTING EXPLOSIVES TO MECHANICAL IMPACT Russian patent published in 2017 - IPC G01N33/22 G01M7/08 F42B35/00 

FIELD: blasting.

SUBSTANCE: invention relates to methods for determining the sensitivity of blasting explosives (BE) to mechanical impacts. The method includes placing the sample BE on an anvil in the center of which a circular section is cut, carrying out shock tests using a load with a central striker, characterized by variable parameters and mounted with the ability to perform reciprocating movements along vertical guides, recording and analyzing the results of measurements. Each of a series of BE test samples is placed before testing in an auxiliary device, which is installed in a cut. The auxiliary device represents two coaxially located monolithic cylinders centered by an external, destroyable after the explosion of the BE shell, BE sample is placed between the ends of the cylinders. The area of the end face of each cylinder must be at least one and a half times the area of BE spot. As cargo characterized by variable parameters, a cargo which is fixed at a constant height is used. The weight of cargo is changed from 0.1 kg to 25 kg with step of no more than 0.5 kg. The speed of cargo motion for all the test BE samplea is kept constant.

EFFECT: invention makes it possible to increase the accuracy of reproducibility of measurement results and the correct determination of explosive properties.

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