Theoretical and experimental investigation of electro discharge destruction of non-conducting materials

Kuznetsova, N. S.; Лопатин, В. В.; Буркин, В. В.; Golovanevskiy, Vladimir; Zhgun, D. V.; Ivanov, Nikolay

doi:10.1109/ppc.2011.6191428

Cited by 18 publications

(24 citation statements)

References 6 publications

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“…Then, the mechanism of rock breaking using electro pulse was obtained indirectly. Kuznetsova et al [15] carried out theoretical and experimental investigation of electro discharge destruction. The correctness and effectiveness of the electro explosion model have been verified.…”

Section: Review Of Previous Studies On Mechanical Model and Breakage mentioning

confidence: 99%

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Duan

Tan

et al. 2019

Energies

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High-voltage electro pulse boring (EPB) has the advantages of high rock-breaking efficiency and good wall quality, and is a new and efficient potential method of rock breaking. The EPB process is defined as random because it is affected by many factors. At present, there is no suitable physical and mathematical model to describe the process and results of rock breakage in EPB, and the conclusions reached regarding rock-breakage mechanisms are not uniform. In this study, a complete damage model of high voltage EPB in granite is established, which includes a shock wave model and a damage model of high voltage EPB in granite. The damage model is based on the Particle Flow Code two-dimensional program. Use of a damage model of EPB accommodates the complete process of high voltage EPB, from discharge to production of a shock wave, and so rock-breaking via electro pulse can be simulated and calculated. The time-varying waveforms of shock waves with different electrical parameters are simulated and calculated on the basis of the model. Different shock wave forms are loaded into the surface and internal rock in the damage geometric model of EPB granite. Then, the breakage process of the rock surface and internally, and the mechanism of rock breakage using EPB are analyzed. This study provides a scientific basis for the quantitative expression and prediction of rock fragmentation in EPB in order to improve the drilling efficiency and reduction of energy loss in the process of EPB.

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Section: Review Of Previous Studies On Mechanical Model and Breakage mentioning

confidence: 99%

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Duan

Tan

et al. 2019

Energies

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“…The electric-discharge blasting method is based on using the energy produced by an expanding electric discharge plasma channel when a powerful current pulse flows through it [1,5]. The discharge channel initiation can be implemented simultaneously in several boreholes allowing to split off the object in a predefined direction [6].…”

Section: Electric-discharge Destruction Principlesmentioning

confidence: 99%

“…It is also essential to begin the destruction near the free surface paralleled to the axis of boreholes. It is well known that the free surface provides a wave interference which in turn creates the tensile stresses inside a solid material [5][6][7]. The coefficient of electrical energy conversion into the shock-wave disturbances is an important characteristic of electro-explosion.…”

Section: Electric-discharge Destruction Principlesmentioning

confidence: 99%

“…EC is a coaxial system, in axis of which, in the moment of capacitor bank commutation, due to the explosion of thin copper wire, an electrical discharge is developed. EC is made of plastic material which have the acoustic stiffness close to that of destructible material, such as polyethylene or paraffin [5]. It was shown in [9] that application of polyethylene allows to increase the wave energy by 20-25 % in comparison with electrical discharge in water.…”

Section: Electric-discharge Destruction Principlesmentioning

confidence: 99%

“…Short lifetime of the plasma allows developing very high power in the discharge channel. The maximum power value generated in the plasma channel is typically in the tens and hundreds of MW [5,7,9].…”

Section: High Voltage Equipmentmentioning

confidence: 99%

See 2 more Smart Citations

A phased splitting off from the high-strength concrete by an electro-blasting method

Voitenko¹,

Yudin²

2016

AIP Conference Proceedings

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A phased splitting off from the monolith concrete block via electro-blasting method have been described. The results of experiments using the high-current pulse generator with operating voltage up to 15 kV and maximum stored energy of 126 kJ with initiation of the discharge in two boreholes were presented. The step by step electro-blast were produced simultaneous within boreholes drilled in the cast in the ground concrete monolith. Each subsequent electro-blast was performed in the boreholes pair situated farther from the free surface. Boreholes in each pair were drilled at a distance of 30-40 cm from each other, and of 25 cm apart from line of previous pair. It is shown that the electro-blasts leads to formation of main cracks at the predefined direction via boreholes line as well as main cracks lead to creation of a new free surfacethat help to form the desirable wave interference at the next step of the electro-blast

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An Experimental and Numerical Study on the Mechanism of High-Voltage Electro Pulse Rock-Breaking

Kang

Duan

et al. 2022

Rock Mech Rock Eng

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Theoretical and experimental investigation of electro discharge destruction of non-conducting materials

Cited by 18 publications

References 6 publications

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

A phased splitting off from the high-strength concrete by an electro-blasting method

An Experimental and Numerical Study on the Mechanism of High-Voltage Electro Pulse Rock-Breaking

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