Physical and Chemical Geotechnologies

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Volume 6 (2022)

Determination of the performance of industrial explosives by the degree of realization of the detonation rate

Maksym Kononenko1*, Oleh Khomenko1, Ihor Kovalenko2, Andrii Kosenko3

Abstract

The article considers the analysis of determining the performance of explosives using experimental methods, namely ballistic pendulum, ballistic mortar, determining the volume of the ground ejection funnel, lead bomb. It is found that determining the performance of emulsion explosives using these methods has a number of significant features associated with their large critical diameter. In turn, this requires conducting experiments with charges of large mass, which will lead to the abandonment of traditional methods of determining the operability. By analyzing the known analytical methods of calculating the coefficient of relative performance of explosives, it is found that for emulsion explosives the determination of relative performance is necessary to be carried out with the help of analytical calculation methods. Analytical methods of determining the performance of explosives established significant discrepancies in the results of the calculation, and for emulsion explosives are generally underestimated, since their breezant action is not taken into account. Therefore, the paper developed a methodology for determining the performance quotient of explosives by the degree of detonation rate, taking into account the main energy and detonation characteristics of explosives: heat and volume of explosion products, density and detonation rate. The proposed analytical methodology for determining the performance factor of explosives allows us to obtain correct results, necessary for the calculation and design of parameters of drilling and blasting operations.

Keywords: iron ore, emulsion explosive, drilling and blasting, performance quotient, energy and detonation characteristics, detonation rate

References

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