Evaluation of Energy Characteristics of High Voltage Equipment for Electro-Blasting Destruction of Rocks and Concrete

Abstract

The splitting off concrete monolith via electro-blast technology is described. High- voltage investigations were performed using the electric-discharge blasting unit with charging voltage up to 15 kV and maximum energy of 126 kJ. Several series of experiments of multiborehole electro-blast with initiation of plasma channel by wire explosion have been carried out. The combined effect of pulse electric discharge and gas generating composition allows to increase the energy of electro-blasting. According to data obtained from experiments the average value of energy for concrete monolith splitting off of 1 m³ is about 1554 kJ. The energy of electrical discharge pulse is about 95 kJ and gas-generating composition has energy contribution of 3.8 kJ/g. For carrying out of one electric-discharge blasting experiment 6-8 minutes has been spent. Therefore, the efficiency of pulse power system is about (0.85-0.9) m³/h.

Original language	English
Article number	012011
Journal	Journal of Physics: Conference Series
Volume	652
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/652/1/012011
Publication status	Published - 5 Nov 2015
Event	12th International Conference on Gas Discharge Plasmas and Their Applications, GDP 2015 - Tomsk, Russian Federation Duration: 6 Sep 2015 → 11 Sep 2015

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1742-6596/652/1/012011

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Voitenko, N. V., Yudin, A. S., & Kuznetsova, N. S. (2015). Evaluation of Energy Characteristics of High Voltage Equipment for Electro-Blasting Destruction of Rocks and Concrete. Journal of Physics: Conference Series, 652(1), [012011]. https://doi.org/10.1088/1742-6596/652/1/012011

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abstract = "The splitting off concrete monolith via electro-blast technology is described. High- voltage investigations were performed using the electric-discharge blasting unit with charging voltage up to 15 kV and maximum energy of 126 kJ. Several series of experiments of multiborehole electro-blast with initiation of plasma channel by wire explosion have been carried out. The combined effect of pulse electric discharge and gas generating composition allows to increase the energy of electro-blasting. According to data obtained from experiments the average value of energy for concrete monolith splitting off of 1 m3 is about 1554 kJ. The energy of electrical discharge pulse is about 95 kJ and gas-generating composition has energy contribution of 3.8 kJ/g. For carrying out of one electric-discharge blasting experiment 6-8 minutes has been spent. Therefore, the efficiency of pulse power system is about (0.85-0.9) m3/h.",

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