分析2015年8月—2018年7月满洲里地震台FHDZ-M15地磁总场与分量组合观测系统记录的地磁秒采样观测数据（剔除磁暴与磁扰时间段），发现台站地磁秒采样数据资料所受干扰主要呈阶跃和尖峰形态，通过测量测区地磁场水平梯度，排查周边环境，并对设备和线路进行漏电检测，认为：阶跃形态干扰主要由高压直流输电和车辆停放引起；经逐项排查对UPS加热及输电线路漏电检测，仪器室温度过低和输电线路漏电均造成高频毛刺尖峰形态干扰，对UPS加热处理，干扰状态得到改善，但Z、F分量干扰仍在。受满洲里气候条件等因素限制，未能在2019年完成输电线路更换，当前无法确定干扰是否为输电线路漏电所致，后续将采取相应措施予以确认。
It can be found that the interference shapes of FHDZ-M15 geomagnetic total and component field combination observation system at Manzhouli Seismic Station are step shape and peak shape by analyzing geomagnetic seconds sampling data from August 2015 to July 2018, which excluding the period of geomagnetic storm and magnetic interference. It is considered that the step shape interference is mainly caused by HVDC power transmission and vehicle parking by measuring horizontal gradient of the surveyed area, checking the equipment and lines whether there were electric leakages as well as checking the surrounding environment. And after UPS heating, transmission line leakage detection and some other item-by-item inspections, some parts of high-frequency burr peak interference is caused by the over-low room temperature of the instrument and transmission line leakage. After heating the UPS, the interference was improved, but the interference of Z and F components remained. Due to the limitation of climatic conditions and other factors in Manzhouli, the replacement of the transmission lines could not be completed in 2019. As a result, it is impossible to make sure whether the interference is caused by electricity leakage of the transmission line, and corresponding measurement will be confirmed then.
2020,41(1): 64-70 收稿日期：2019-11-06
DOI：10.3969/j.issn.1003-3246.2020.01.010
基金项目：内蒙古自治区地震局局长基金（课题编号：2018JC03）
作者简介：朱天元(1992-),女,天津市人,助理工程师,从事地震监测工作。E-mail:15804708996@163.com
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