| 新城子井下地电阻率观测影响系数分析 |
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| 引用本文： | 黄明威,张琪,李梦莹,杨牧萍.新城子井下地电阻率观测影响系数分析[J].防灾减灾学报,2020(1):49-56. |
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| 作者姓名： | 黄明威 张琪 李梦莹 杨牧萍 |
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| 作者单位： | 辽宁省地震局 |
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| 摘 要： | 以新城子观测站地电阻率为研究对象,结合新城子观测站电测深资料通过影响系数理论用水平层状介质模型对比分析地表、井下地电阻率两种手段的观测效果,对新城子地电阻率观测各层影响系数随深度和极距的变化分析新城子井下地电阻率观测布极的合理性。其结果反应为新城子地电阻率井下观测设计较为合理,减少场地资源的同时对地表和浅层干扰有更好的抑制作用,对深层的映震能力优于地表观测,分析结果可为类似台址电性结构中实施井下地电阻率观测提供参考。
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| 关 键 词： | 地电阻率 井下观测 影响系数 探测深度 电性结构 |
Sensitivity Coefficients Analysis of Deep-well Resistivity Observation in Xinchengzi Seismic Station |
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| HUANG Ming-wei,ZHANG Qi,LI Meng-ying,YANG Mu-ping.Sensitivity Coefficients Analysis of Deep-well Resistivity Observation in Xinchengzi Seismic Station[J].Seismological Research of Northeast China,2020(1):49-56. |
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| Authors: | HUANG Ming-wei ZHANG Qi LI Meng-ying YANG Mu-ping |
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| Institution: | (Liaoning Earthquake Agency,Liaoning Shenyang 110034,China) |
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| Abstract: | We take the geoelectric resistivity of Xinchengzi observation station as the research object,and based on the electric sounding data of Xinchengzi observation station.The observation results of surface and deep-well resistivity are compared and analyzed by using the horizontal layered medium model through the sensitivity coefficient theory.Analysis on the variation of sensitivity coefficient of each layer with depth and pole distance and it’s rational to analyze Xinchengzi deep-well resistivity observation.The result reflects that Xinchengzi deep-well resistivity observation design is more reasonable.It reduces the site resources and has a better suppression of surface and shallow disturbances.It has a better ability to reflect earthquakes in deep layers than surface observations.The analysis results can be used as a reference for choosing buried depth and spacing of the electrodes when deep-well electrical resistivity observation was used in different electric structures. |
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| Keywords: | geoelectric resistivity deep-well measurement sensitivity coefficient detection depth electrical structure |
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