High Power Laser and Particle Beams, Volume. 36, Issue 5, 055021(2024)
Method for predicting plasma channel length for rock breaking by pulsed discharge
Figures & Tables(13)
Fig. 1. Comprehensive test platform for rock breaking by high voltage pulse discharge
Fig. 4. Equivalent electrical circuit of high voltage pulse discharge rock breaking
Fig. 6. Method for measuring the length of the section profile of the crushing area
Table 1. Data of rock breaking test No.2
View tableView in ArticleTable 1. Data of rock breaking test No.2
Iemax/kA Iemin/kA TIe/μs Vemax/kV Vemin/kV TVe/μs lch/cm 13.258 −9.285 5.132 300.321 −46.507 5.144 3.380
Table 2. The value of optimal solution
View tableView in ArticleTable 2. The value of optimal solution
ξ γ f εs r(0)/cm T(0)/K n(0) 0.0039 1.1309 0.4228 1.7456×10−20 7.0717×10−6 1.7998×104 3.4254×1029
Table 3. Errors between test data and model data
View tableView in ArticleTable 3. Errors between test data and model data
Imax/kA Imin/kA TI/μs Vmax/kV Vmin/kV TV/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 4. Comparison of length between predicted values and results of demolding
View tableView in ArticleTable 4. Comparison of length between predicted values and results of demolding
No. predicted value/cm length of section contour of last crushing area/cm length of section contour of the crushing area/cm average/cm error/% 1 2.362 2.190 2.936 2.563 7.842 4 5.194 5.107 5.222 5.164 0.581 6 6.494 6.382 7.111 6.746 3.736 7 7.736 7.061 7.407 7.234 6.939 9 7.324 6.874 7.727 7.300 0.309
Tools
Get Citation
Copy Citation Text
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
Paper Information
Category:
Received: Dec. 7, 2023
Accepted: Feb. 23, 2024
Published Online: May. 16, 2024
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20