考虑电性参数变化的高压电脉冲破岩机理及规律
Rock Breaking Mechanism and Rule of High Voltage Electric Pulse Considering the Change of Electrical Parameters
DOI: 10.12677/hjce.2024.1312259, PDF,   
作者: 饶平平, 焦大维, 崔纪飞：上海理工大学环境与建筑学院，上海；冯伟康：同济大学上海自主智能无人系统科学中心，上海
关键词: 高压电脉冲；多场耦合；电性参数；岩石破碎；High-Voltage Electrical Pulse； Multifield Coupling； Electrical Parameter； Rock Breakage
摘要: 为研究高压电脉冲击穿过程对岩石破碎的影响，综合考虑击穿过程中岩石电导率和介电常数变化对电击穿作用的影响，利用COMSOL Multiphysics仿真软件建立了基于电场、传热场和固体力学场的多物理场耦合数值模型。结果表明：在本文参数条件下，考虑电性参数(电导率和介电常数)变化带来的影响时，形成完整的电击穿通道的时间发生延迟，且在约0~170 ns时间内电性参数变化对应的最高温度不高于电性参数为定值对应的最高温度，在约170 ns之后则相反。电极间距不同，电脉冲形成的击穿通道形式不同，最大电流密度随电极间距增大而减小，击穿通道温度可达104 K。电压上升到达峰值的时间越长，岩石的破碎越充分，最大应力可达103 MPa。研究结论可为高压电脉冲破岩参数的选取提供参考和借鉴。
Abstract: To investigate the impact of high-voltage electrical pulse breakdown on rock fragmentation and changes in rock conductivity and dielectric constant during breakdown, a multi-physics coupling numerical model based on electric field, heat transfer field, and solid mechanics field was established using COMSOL Multiphysics simulation software. The results indicate that considering changes in electrical parameters (electrical conductivity and dielectric constant) delays the time required to form a complete electrical breakdown channel. Moreover, the maximum temperature corresponding to changes in electrical parameters does not exceed that corresponding to fixed values by more than 0~170 ns; however, after approximately 170 ns, this relationship reverses. The maximum current density decreases as electrode spacing increases while the temperature within the breakdown channel can reach up to 104 K. Longer voltage rise times result in complete rock fragmentation with maximum stress reaching up to 103 MPa. These research findings provide valuable guidance for selecting optimal.
文章引用：饶平平, 焦大维, 崔纪飞, 冯伟康. 考虑电性参数变化的高压电脉冲破岩机理及规律[J]. 土木工程, 2024, 13(12): 2357-2369. https://doi.org/10.12677/hjce.2024.1312259

参考文献

[1] 石林, 汪海阁, 纪国栋. 中石油钻井工程技术现状、挑战及发展趋势[J]. 天然气工业, 2013, 33(10): 1-10.
[2] 李冬霜. 高压脉冲放电扩桩机理及试验研究[D]: [硕士学位论文]. 长春: 吉林大学, 2011.
[3] 左蔚然, 贺泽铭, 印万忠, 等. 多宝山铜矿石高压电脉冲破碎预处理试验研究[J]. 金属矿山, 2019(8): 71-77.
[4] Timoshkin, I.V., Mackersie, J.W. and MacGregor, S.J. (2004) Plasma Channel Miniature Hole Drilling Technology. IEEE Transactions on Plasma Science, 32, 2055-2061. [Google Scholar] [CrossRef] 
[5] Inoue, H., Lisitsyn, I.V., Akiyama, H. and Nishizawa, I. (2000) Drilling of Hard Rocks by Pulsed Power. IEEE Electrical Insulation Magazine, 16, 19-25. [Google Scholar] [CrossRef] 
[6] Ushakov, V.Y., Vajov, V.F. and Zinoviev, N.T. (2018) Relevance, Physical Basics, and Problems of Large-Scale Introduction of Electrodischarge Technology. In: Ushakov, V.Y., Vajov, V.F. and Zinoviev, N.T., Eds., Electro-Discharge Technology for Drilling Wells and Concrete Destruction, Springer International Publishing, 1-12. [Google Scholar] [CrossRef] 
[7] Fujita, T., Yoshimi, I., Tanaka, Y., Jeyadevan, B. and Miyazaki, T. (1999) Research of Liberation by Using High Voltage Discharge Impulse and Electromagnetic Waves. Shigen-to-Sozai, 115, 749-754. [Google Scholar] [CrossRef] 
[8] Ezzat, M., Adams, B.M., Saar, M.O. and Vogler, D. (2021) Numerical Modeling of the Effects of Pore Characteristics on the Electric Breakdown of Rock for Plasma Pulse Geo Drilling. Energies, 15, Article 250. [Google Scholar] [CrossRef] 
[9] Budenstein, P.P. (1982) Failure Analysis of a Composite Insulation System under Impulse Excitation. 1982 IEEE International Conference on Electrical Insulation, Philadelphia, 7-9 June 1982, 131-136. [Google Scholar] [CrossRef] 
[10] Andres, U. (2010) Development and Prospects of Mineral Liberation by Electrical Pulses. International Journal of Mineral Processing, 97, 31-38. [Google Scholar] [CrossRef] 
[11] Andres, U.T. (1977) Liberation Study of Apatite-Nepheline Ore Comminuted by Penetrating Electrical Discharges. International Journal of Mineral Processing, 4, 33-38. [Google Scholar] [CrossRef] 
[12] Liu, W.J., Zhang, Y.J., Zhu, X.H., et al. (2022) The Influence of Pore Characteristics on Rock Fragmentation Mechanism by High Voltage Electric Pulses. Plasma Science and Technology, 25, Article ID: 055502.
[13] 章志成, 裴彦良, 刘振, 等. 高压短脉冲作用下岩石击穿特性的实验研究[J]. 高电压技术, 2012, 38(7): 1719-1725.
[14] 白丽丽. 等离子体钻井脉冲放电击穿破坏岩石机理研究[D]: [博士学位论文]. 大庆: 东北石油大学, 2023.
[15] Wang, E., Shi, F. and Manlapig, E. (2012) Experimental and Numerical Studies of Selective Fragmentation of Mineral Ores in Electrical Comminution. International Journal of Mineral Processing, 112, 30-36. [Google Scholar] [CrossRef] 
[16] 刘伟吉, 张有建, 罗云旭, 等. 岩石内部高压电脉冲等离子体通道生成机理[J]. 石油学报, 2023, 44(4): 684-697.
[17] Zhu, X., Luo, Y., Liu, W., Hu, H. and Chen, M. (2022) Numerical Electric Breakdown Model of Heterogeneous Granite for Electro-Pulse-Boring. International Journal of Rock Mechanics and Mining Sciences, 154, Article ID: 105128. [Google Scholar] [CrossRef] 
[18] 饶平平, 冯伟康, 崔纪飞, 等. 考虑多场耦合高压电脉冲作用下岩体破碎响应[J]. 工程科学与技术, 2024, 56(6): 93-102.
[19] Zhu, X., Luo, Y., Liu, W., He, L., Gao, R. and Jia, Y. (2021) On the Mechanism of High-Voltage Pulsed Fragmentation from Electrical Breakdown Process. Rock Mechanics and Rock Engineering, 54, 4593-4616. [Google Scholar] [CrossRef] 
[20] Kusaiynov, K., Nussupbekov, B.R., Shuyushbayeva, N.N., Tanasheva, N.K., Shaimerdenova, K.M. and Khassenov, A.K. (2017) On Electric-Pulse Well Drilling and Breaking of Solids. Technical Physics, 62, 867-870. [Google Scholar] [CrossRef] 
[21] Yudin, A.S., Zhurkov, M.Y., Martemyanov, S.M., Datskevich, S.Y. and Vazhov, V.F. (2019) Electrical Discharge Drilling of Granite with Positive and Negative Polarity of Voltage Pulses. International Journal of Rock Mechanics and Mining Sciences, 123, Article ID: 104058. [Google Scholar] [CrossRef] 
[22] Li, C., Duan, L., Wu, L., Tan, S., Zheng, J. and Chikhotkin, V. (2021) Optimization of Discharge Circuit Model Based on Electro Pulse Boring Experiment. Journal of Natural Gas Science and Engineering, 86, Article ID: 103730. [Google Scholar] [CrossRef] 
[23] Renshaw, C.E. (1997) Mechanical Controls on the Spatial Density of Opening-Mode Fracture Networks. Geology, 25, 923-926. [Google Scholar] [CrossRef] 

为你推荐