• High Power Laser and Particle Beams
  • Vol. 36, Issue 5, 055021 (2024)
Yi Liu1,2, Hongbin Liao1, Jin Cheng3, Liuxia Li1,2..., Fuchang Lin1,2 and Yong Zhao1|Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 2Key Laboratory of Pulsed Power Technology of Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China
  • 3CNPC Engineering Technology R&D Company Limited, Beijing 102206, China
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    DOI: 10.11884/HPLPB202436.230432 Cite this Article
    Yi Liu, Hongbin Liao, Jin Cheng, Liuxia Li, Fuchang Lin, Yong Zhao. Method for predicting plasma channel length for rock breaking by pulsed discharge[J]. High Power Laser and Particle Beams, 2024, 36(5): 055021 Copy Citation Text show less
    Comprehensive test platform for rock breaking by high voltage pulse discharge
    Fig. 1. Comprehensive test platform for rock breaking by high voltage pulse discharge
    Results of typical test
    Fig. 2. Results of typical test
    Demolding results of the crushing area
    Fig. 3. Demolding results of the crushing area
    Equivalent electrical circuit of high voltage pulse discharge rock breaking
    Fig. 4. Equivalent electrical circuit of high voltage pulse discharge rock breaking
    Flow chart of plasma channel length prediction
    Fig. 5. Flow chart of plasma channel length prediction
    Method for measuring the length of the section profile of the crushing area
    Fig. 6. Method for measuring the length of the section profile of the crushing area
    Pareto front of model parameter optimization
    Fig. 7. Pareto front of model parameter optimization
    Comparison between test data and model data
    Fig. 8. Comparison between test data and model data
    Pareto front of plasma channel length prediction
    Fig. 9. Pareto front of plasma channel length prediction
    Iemax/kAIemin/kATIe/μsVemax/kVVemin/kVTVe/μslch/cm
    13.258−9.2855.132300.321−46.5075.1443.380
    Table 1. Data of rock breaking test No.2
    ξγfεsr(0)/cmT(0)/Kn(0)
    0.00391.13090.42281.7456×10−207.0717×10−61.7998×1043.4254×1029
    Table 2. The value of optimal solution
    Imax/kAImin/kATI/μsVmax/kVVmin/kVTV/μs
    13.229(0.22%)−8.631(7.00%)5.318(3.62%)300.54(0.07%)−48.869(5.08%)5.028(2.26%)
    Table 3. Errors between test data and model data
    No.predicted value/cmlength of section contour of last crushing area/cmlength of section contour of the crushing area/cmaverage/cmerror/%
    12.3622.1902.9362.5637.842
    45.1945.1075.2225.1640.581
    66.4946.3827.1116.7463.736
    77.7367.0617.4077.2346.939
    97.3246.8747.7277.3000.309
    Table 4. Comparison of length between predicted values and results of demolding
    Yi Liu, Hongbin Liao, Jin Cheng, Liuxia Li, Fuchang Lin, Yong Zhao. Method for predicting plasma channel length for rock breaking by pulsed discharge[J]. High Power Laser and Particle Beams, 2024, 36(5): 055021
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