| 滦县地磁场井下观测系统抗干扰效果 |
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| 引用本文： | 王莉森,张云昌,殷金平,牛露. 滦县地磁场井下观测系统抗干扰效果[J]. 地震地磁观测与研究, 2017, 38(4): 98-104. DOI: 10.3969/j.issn.1003-3246.2017.04.016 |
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| 作者姓名： | 王莉森 张云昌 殷金平 牛露 |
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| 作者单位： | 1. 中国石家庄 050021 河北省地震局;2. 中国北京 010000 中国地震局搜救应急中心;3. 中国江西 341000 赣州市地震局 |
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| 基金项目： | 中国地震台网中心协作项目（河北省地震前兆台网事件（2008-2014）分析提取与图集报告产出）；华北片区地震前兆维修中心建设项目；中国地震背景场探测项目河北分项 |
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| 摘 要： | 近距离铁磁性物质干扰(农田耕作、基建等)、直流供电干扰(高压直流输电、地电阻率观测等)是地磁场地面观测的主要干扰方式。在滦县地震台布设地磁场井下观测系统,检验井下观测的抗干扰效果,结果发现,地磁场井下观测可抑制近距离铁磁性物质干扰,但无法抑制直流供电干扰(可通过避让一定距离解决),该分析结果为未来地震监测手段的选取提供技术参考指标和依据。
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| 关 键 词： | 铁磁性物质 地磁场井下观测 抗干扰 抑制干扰 技术参考 |
Analysis of anti-interference effect of magnetic field observation system at Luanxian Seismic Station |
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| Wang Lisen,Zhang Yunchang,Yin Jingping,Niu Lu. Analysis of anti-interference effect of magnetic field observation system at Luanxian Seismic Station[J]. Seismological and Geomagnetic Observation and Research, 2017, 38(4): 98-104. DOI: 10.3969/j.issn.1003-3246.2017.04.016 |
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| Authors: | Wang Lisen Zhang Yunchang Yin Jingping Niu Lu |
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| Affiliation: | 1. Hebei Earthquake Agency, Shijiazhuang 050021, China;2. Search and Rescue Center, China Earthquake Administration, Beijing Municipality 010000, China;3. Ganzhou Earthquake Agency, Jiangxi Province 341000, China |
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| Abstract: | The interference of near field ferromagnetic material (farmland cultivation, infrastructure, etc.), DC power supply interference (high voltage direct current transmission, earth resistivity observation and so on) are the main ways of ground magnetic observation. In this paper, the installation of borehole geomagnetic observation system at Luanxian Seismic Station is introduced. An anti-interference test of borehole observation has been carried out. It is verified that the borehole observation of geomagnetic field can inhibit the short-range ferromagnetic substance interference, but can not inhibit the interference of DC power supply (by a certain distance, avoid solving). This analysis results provide the technical reference specifications and basis for future selection of earthquake monitoring means. |
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| Keywords: | ferromagnetic material geomagnetic field observation anti-interference suppress interference technical reference |
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