| 深井电极交叉供电对自然电位的影响 |
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| 引用本文： | 赵斐,叶青,张远富.深井电极交叉供电对自然电位的影响[J].地震地磁观测与研究,2017,38(3):93-99. |
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| 作者姓名： | 赵斐 叶青 张远富 |
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| 作者单位： | 1.中国甘肃 744000 平凉中心地震台;2.中国北京 100045 中国地震台网中心 |
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| 基金项目： | 由中国地震局专项（项目编号：17A32ZX208）；中国地震局监测、预测、科研三结合课题（项目编号：162807） |
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| 摘 要： | 通过实验论证平凉地震台深井电阻率观测自然电位畸变由电极交叉供电造成,讨论分析不同电极供电对自然电位的影响。结果表明:对测量极供电,会影响自然电位,不会影响电阻率测值;单极供电对自然电位的影响表现为阶跃突跳,并以指数形态恢复,恢复时间约10 h,干扰峰值与供电电流、供电时间等有关;对观测数据进行校正,取得较好效果。
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| 关 键 词： | 深井 地电阻率 自然电位 交叉供电 校正 |
The effects of cross-power supply of the electrodes on spontaneous potential in deep wells |
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| Zhao Fei,Ye Qing,Zhang Yuanfu.The effects of cross-power supply of the electrodes on spontaneous potential in deep wells[J].Seismological and Geomagnetic Observation and Research,2017,38(3):93-99. |
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| Authors: | Zhao Fei Ye Qing Zhang Yuanfu |
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| Institution: | 1.Pingliang Center Seismic Station, Gansu Province 744000, China;2.China Earthquake Networks Center, Beijing Municipality 100045, China |
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| Abstract: | At first, through the experimental demonstration, the reason of the spontaneous potential distortion in the Pingliang deep well resistivity observation is caused by the cross-power supply of the electrodes. Secondly, the effects of different electrodes powered on spontaneous potential were discussed. The results show that the power supply on measure electrodes will affect the spontaneous potential, but will not affect the resistivity measurement; The effects of unipolar electrode powered on spontaneous potentials are step jump, and recovers exponentially. The recovery time is of 10 hours or so. The peak of interference related to the supply current, power supply time and so on; Finally, The correction of the observed data has achieved good results. |
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| Keywords: | deep well geo-electric resistivity spontaneous potential cross-power supply correction |
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