Effect of Energy Deposition on High-Voltage Electropulse Drilling Efficiency in Granite

Vazhov, V. F.; Zhurkov, M. Yu.; Datskevich, S. Yu.; Muratov, V. M.; Rødland, Arild

doi:10.1134/s1062739117032368

Cited by 9 publications

(1 citation statement)

References 3 publications

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“…With the development of social infrastructure and the exploration of mineral energy, the traditional mechanical rotary breaking method has disadvantages such as slow speed, large wear of the components, and it is difficult tocrush high hardness rocks [1][2][3]. Until now, many new rock-breaking technologies have emerged, such as underbalanced drilling [4], laser rock-breaking technology [5], and RHPD technology [6,7], among which, RHPD has become the focus of many scholars its simplicity of operation and its high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of spatial damage characteristics of rock under multiple high-voltage pulse discharges: I. Cross-section characteristics

Zhao,

Zhang,

Liu

et al. 2023

Phys. Scr.

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Rock breaking by high-voltage pulse discharge (rock breaking by high-voltage pulse discharge, RHPD) is an efficient technology for rock breaking. A single discharge will lead to the initiation or expansion of cracks inside the rock, and the expansion of cracks after multiple discharges will lead to the destabilization of the rock and finally produce a fractured zone. Because of the difficulty in quantifying the spatial damage characteristics of the fractured zone, in this paper, based on the discrete element method and theoretical analysis, the spatial damage model (spatial damage model, SDM) of rock is established. For a typical liquid-solid combination, from the microscopic point of view, the damage characteristics of the fractured zone on the radial cross-section of the plasma are quantified. The changing characteristics of the damage characteristics were analyzed for multiple discharges. In addition, an experimental platform has been built, and the accuracy of the SDM has been verified by the experimental results. The results show that the increase in the discharge distance will improve the deposition energy and crushing effect, and will also improve the accuracy of the model. The findings of this paper provide a technical reserve for the application of RHPD.

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