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| 高压短脉冲作用下岩石击穿特性的实验研究 | |
| 引用本文： | 章志成,裴彦良,刘振,王揆洋,刘保华,闫克平.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. |
| 作者姓名： | 章志成 裴彦良 刘振 王揆洋 刘保华 闫克平 |
| 作者单位： | 1. 浙江大学生物质化工教育部重点实验室,杭州310027 浙江大学化学工程与生物工程学系,杭州310027 2. 国家海洋局第一海洋研究所,青岛,266061 3. 国家深海基地管理中心,青岛,266061 |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | 为了开发脉冲等离子体钻机,开展了高压短脉冲作用下岩石击穿的实验研究。以去离子水为工作介质,将不同种类和不同厚度的岩石放置于尖板电极间,通过加载不同大小的电压于岩石上,考察了岩石的电击穿概率与平均电场强度的关系。实验结果发现:7%空隙率的黄砂岩电击穿场强为70kV/cm;0.8%空隙率的白大理岩电击穿场强为160kV/cm。岩石孔隙率的大小对电击穿场强影响显著,孔隙率越大,电击穿场强越小。岩石厚度对电击穿场强也有一定影响,电击穿场强随厚度增加而减少。 |
| 关 键 词： | 短脉冲 电击穿 岩石 去离子水 电击穿场强 等离子体钻机 |
Experimental Research on Rock Breakdown Under Short High-voltage Pulse |
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| ZHANG Zhicheng,PEI Yanliang,LIU Zhen,WANG Kuiyang,LIU Baohua,YAN Keping.Experimental Research on Rock Breakdown Under Short High-voltage Pulse[J].High Voltage Engineering,2012,38(7):1719-1725. | |
| Authors: | ZHANG Zhicheng PEI Yanliang LIU Zhen WANG Kuiyang LIU Baohua YAN Keping |
| Affiliation: | 1,2(1.Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University,Hangzhou 310027,China; 2.Department of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China; 3.The First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China; 4.National Deep Sea Center,Qingdao 266061,China) |
| Abstract: | In order to develop an efficient plasma drill,we experimentally researched rock breakdown under short high-voltage pulses in deionized water.Rocks were placed between a needle high-voltage electrode and a plate grounded electrode.The relationship between breakdown probability and electrical strength was evaluated by applying various voltage levels to the rocks.The results show that the electrical breakdown strength of yellow sandstone with 7% porosity is 70 kV/cm,and for white marble with 0.8% porosity it is 160 kV/cm.The porosity has a great influence on the breakdown strength.Moreover,experimental results show that the breakdown strength drops with increasing thickness of the rock. |
| Keywords: | short pulse electrical breakdown rock deionized water electrical breakdown strength plasma drill |
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