摘要
地铁建设对江宁地电台地电阻率观测造成较大影响,通过分析观测数据,比较了地表、井下观测受地铁等因素的干扰情况,并探讨了用影响系数来研究地表、井下观测的地表浅层干扰抑制能力,得到以下初步结果:①地铁试运行期间的干扰影响大于正式运营;②井下观测对供电电流更加敏感;③井下观测能够减轻地铁等的干扰,其地表浅层干扰抑制能力优于地表观测,可作为地电观测的重点发展方向之一。
Subway construction can cause great impacts on the resistivity observation.By analyzing the resistivity data,the influence of subway interference on surface and underground observation is compared and the ability of interference suppression in shallow layer of surface and underground observation is studied using the influence coefficient.It is concluded that:①The test operation of Metro has the more obvious influence on geo-electric observation than the normal operation;②Underground observation is more sensitive to power supply current;③The underground observation of Jiangning station has good inhibition to surface and shallow interference coming from the subway and so on,which can be one of the key development directions.
作者
樊晓春
吴帆
袁慎杰
刘孝峰
Fan Xiaochun;Wu Fan;Yuan Shenjie;Liu Xiaofeng(Nanjing Earthquake Monitoring and Early Warning Center,Jiangsu Province 210008,China;Nanjing Earthquake Agency,Jiangsu Province 210008,China;Jiangning Seismic Station,Jiangsu Province 210014,China)
出处
《地震地磁观测与研究》
2019年第5期63-69,共7页
Seismological and Geomagnetic Observation and Research
基金
中国地震局地震科技星火计划(项目编号:XH19015YSX)
关键词
地电阻率
地表观测
井下观测
地铁干扰
影响系数
geo-electrical resistivity
surface observation
underground observation
subway interference
influence coefficient
