马瑞;孙西濛;吕嘉;曲骏;周鹏;刘宝林;薛启龙;
MA Rui;SUN Xi-meng;LYU Jia;QU Jun;ZHOU Peng;LIU Bao-lin;XUE Qi-long;Beijing Municipal Road and Bridge Co.,Ltd.;China University of Geosciences (Beijing)Engineering and Technology College;

• 1:北京市政路桥股份有限公司
• 2:中国地质大学(北京)工程技术学院

摘要(Abstract)：

针对水介质中压力冲击波在破碎岩石方面的应用,研究高压脉冲放电在泡沫电介质中的放电机理。根据不同电介质的电离特性配比了两种阴阳离子的泡沫电介质,数值模拟分析了在不同电介质环境下高压脉冲放电时的冲击压力变化规律。运用气泡动力学方程分析了气泡在放电过程中的爆破形态,分析了不同放电电压、放电间隙等条件对气泡爆破形态的影响规律。并进行了初步室内实验,验证了泡沫作为电介质实现高压脉冲放电破碎岩石的可行性。由于泡沫可产生空泡效应,能增加爆破效果,而且泡沫在防漏、密封性能要求等方面都优于水介质,具有更广阔的应用前景。
The application of high pressure pulse discharge in foam dielectric is studied in the application of pressure shock wave in rock medium in fractured rock.According to the ionization characteristics of different dielectric materials,two kinds of anion-cation foam dielectrics were matched,and the variation of impact pressure during high-voltage pulse discharge under different dielectric environments was numerically simulated.The bubble kinetic equation is used to analyze the blasting morphology of the bubble during the discharge process,and the influence of different discharge voltage and discharge gap on the blasting morphology of the bubble is analyzed.A preliminary laboratory test was carried out to verify the feasibility of using foam as a dielectric to achieve high-pressure pulse discharge to break rock.Since the foam can produce a cavitation effect,the blasting effect can be increased,and the foam is superior to the aqueous medium in terms of leakage prevention and sealing performance requirements,and has a broader application prospect.

关键词(KeyWords)： 高压脉冲放电;脉冲电流;等离子体;岩石破碎;泡沫电介质
high voltage pulse discharge;pulse current;plasma;rock fragmentation;foam dielectric

Abstract:

Keywords:

基金项目(Foundation): 北京市政路桥有限公司资助项目

作者(Authors): 马瑞;孙西濛;吕嘉;曲骏;周鹏;刘宝林;薛启龙;
MA Rui;SUN Xi-meng;LYU Jia;QU Jun;ZHOU Peng;LIU Bao-lin;XUE Qi-long;Beijing Municipal Road and Bridge Co.,Ltd.;China University of Geosciences (Beijing)Engineering and Technology College;

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