地电场观测中的工频干扰抑制方法研究  

Methods for Restraining Power Frequency Interferences in Geo-electric Field Observation

作　　者：席继楼[1] 赵家骝[1] 关歆莹[2] 谭大诚 庄楠[1] 刘超[1] 李国佑[4] 王莉森[5] 李文新[6] 

机构地区：[1]中国地震局地震预测研究所,中国地震局地震预测重点实验室,北京100036 [2]北京市第三建筑工程有限公司,北京100044 [3]甘肃省地震局,兰州730000 [4]青海省地震局,西宁810000 [5]河北省地震局,石家庄050021 [6]云南省地震局,昆明650224

出　　处：《地震》2015年第4期53-63,共11页Earthquake

基　　金：中国地震局任务专项(项目序号:2013-26);中国地震局地震预测研究所(地震预测重点实验室)基本科研业务专项(项目编号:2013IES0101)资助

摘　　要：在地电场观测中,由电力系统产生的工频干扰是一种普遍存在的电磁环境干扰。文章在简要概述地电场观测方法的基础上,对影响地电场观测的工频干扰的产生原因、干扰方式和影响机理进行了比较详细的分析,对干扰抑制方法及其特殊性进行了系统的研究,并结合实际观测,对工频干扰的抑制效果进行了初步讨论。研究认为,随着国民经济建设的飞速发展,电力环境日益复杂,工频干扰对地电场观测的影响日趋严重,进一步开展抗干扰方法和技术研究,对促进地电场观测、应用和发展,具有比较大的现实意义和作用。With the rapid development of China＇s national economic construction and the in- creasing complex of the power environment, power frequency interference effects on the geo-electric field are becoming more and more serious. Power frequency interferences pro- duced by power supply system are a kind of electro-magnetic interference in the geo-elec- tric field observation in China. We first briefly introduce the method of geo-electric field observation. Second, we analyze in detailed the principle, methods, effects and the mecha- nism of power frequency interferences in the geo-electric field observation. And then, we systematically investigate suppression method for power frequency interferences and its particularity in geo-electric field observation. Finally, the effects of power frequency inter- ferences suppression is discussed, combined with the actual geo-electric field observation.

关 键 词：地电场观测 工频干扰 干扰抑制 

分 类 号：P315.7[天文地球—地震学]