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

Author

Listed:
  • Changping Li

    (School of Automation, China University of Geosciences, Wuhan 430074, China
    School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China)

  • Longchen Duan

    (Faculty of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Songcheng Tan

    (Faculty of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Victor Chikhotkin

    (Faculty of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Wenpeng Fu

    (School of Automation, China University of Geosciences, Wuhan 430074, China)

Abstract

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.

Suggested Citation

  • Changping Li & Longchen Duan & Songcheng Tan & Victor Chikhotkin & Wenpeng Fu, 2019. "Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite," Energies, MDPI, vol. 12(4), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:4:p:727-:d:208206
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    References listed on IDEAS

    as
    1. Shuang Wang & Yongcun Guo & Gang Cheng & Deyong Li, 2017. "Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis," Energies, MDPI, vol. 10(8), pages 1-17, August.
    2. Changping Li & Longchen Duan & Songcheng Tan & Victor Chikhotkin, 2018. "Influences on High-Voltage Electro Pulse Boring in Granite," Energies, MDPI, vol. 11(9), pages 1-17, September.
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    Cited by:

    1. Mohamed Ezzat & Daniel Vogler & Martin O. Saar & Benjamin M. Adams, 2021. "Simulating Plasma Formation in Pores under Short Electric Pulses for Plasma Pulse Geo Drilling (PPGD)," Energies, MDPI, vol. 14(16), pages 1-23, August.
    2. Zhixiang Cai & Hui Zhang & Kerou Liu & Yufei Chen & Qing Yu, 2020. "Experimental Investigation and Mechanism Analysis on Rock Damage by High Voltage Spark Discharge in Water: Effect of Electrical Conductivity," Energies, MDPI, vol. 13(20), pages 1-16, October.
    3. Jinyu Feng & Tie Yan & Yang Cao & Shihui Sun, 2022. "Ultrasonic-Assisted Rock-Breaking Technology and Oil and Gas Drilling Applications: A Review," Energies, MDPI, vol. 15(22), pages 1-18, November.
    4. Changping Li & Xiaohui Wang & Longchen Duan & Bo Lei, 2022. "Study on a Discharge Circuit Prediction Model of High-Voltage Electro-Pulse Boring Based on Bayesian Fusion," Energies, MDPI, vol. 15(10), pages 1-12, May.

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