An Electro Breakdown Damage Model for Granite and Simulation of Deep Drilling by High-Voltage Electropulse Boring
Joint Authors
Li, Changping
Duan, Longchen
Tan, Songcheng
Chikhotkin, Victor
Wang, Xiaohui
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-29
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Electropulse rock breaking has wide application prospects in hard rock drilling and ore breaking.
At present, there are no suitable physical mathematical models that describe electropulse boring (EPB) processes under confining pressures.
In this paper, a high-voltage electropulse breakdown damage model is established for granite, which includes three submodels.
It considers electric field distortions inside the rock, and an electric field distribution coefficient is introduced in the electro-breakdown model.
A shock-wave model is also constructed and solved.
To simulate the heterogeneity of rocks, EPB rock breaking in deep environments is simulated using the two-dimensional Particle Flow Code (PFC2D) program.
The solved shock wave is loaded into the model, and confining pressure is applied by the particle servo method.
An artificial viscous boundary is used in the numerical simulation model.
Using this approach, a complete numerical simulation of electropulse granite breaking is achieved.
Breakdown strength and the influences of physical and mechanical parameters on it are also obtained.
Time-varying waveforms of electrical parameters are obtained, and the effect of confining pressure on EPB is also described.
American Psychological Association (APA)
Li, Changping& Duan, Longchen& Tan, Songcheng& Chikhotkin, Victor& Wang, Xiaohui. 2019. An Electro Breakdown Damage Model for Granite and Simulation of Deep Drilling by High-Voltage Electropulse Boring. Shock and Vibration،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211488
Modern Language Association (MLA)
Li, Changping…[et al.]. An Electro Breakdown Damage Model for Granite and Simulation of Deep Drilling by High-Voltage Electropulse Boring. Shock and Vibration No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1211488
American Medical Association (AMA)
Li, Changping& Duan, Longchen& Tan, Songcheng& Chikhotkin, Victor& Wang, Xiaohui. An Electro Breakdown Damage Model for Granite and Simulation of Deep Drilling by High-Voltage Electropulse Boring. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211488
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211488