平原地区接地金属管、线对直流电法的干扰  

Interference of Earth Metal Tube and Wire to DC Exploration in Plain Area

作　　者：叶俊麟[1] 郭璟鑫 张立川[1] YE Junlin;GUO Jingxin;ZHANG Lichuan(Lunan Geo-Engineering Surveying Institute of Shandong Provence,Yanzhou 272100,China)

机构地区：[1]山东省鲁南地质工程勘察院,山东兖州272100

出　　处：《华北地震科学》2020年第S01期39-41,共3页North China Earthquake Sciences

基　　金：山东省1:5万水文地质调查(沙沟、峄城幅)项目。

摘　　要：在平原地区进行直流电法勘探,当供电、测量电极附近存在接地金属管道、线时,电场不再是点电流源电场,所采集数据易产生假异常,为能正确识别干扰异常,文章从基本电法理论出发,对对称四极装置及联合剖面法装置进行分析,结合实地经验,剖析干扰原因,总结常见干扰特征,并提出避免干扰的方法,以期为同类工作提供借鉴和参考。In the process of direct current exploration in plain area,when there are grounding metal pipes and lines near the power supply and measuring electrode,the electric field is no longer the electric field of point current source,and the collected data is easy to produce false anomalies.Based on the theory of basic electrical method and the analysis of symmetrical quadrupole device and joint section method,this paper analyzes the causes of interference,summarizes the characteristics of common interference and puts forward some methods to avoid interference,in order to provide reference and reference for similar work.

关 键 词：直流电法勘探 接地金属管、线 干扰 

分 类 号：P613.4[天文地球—矿床学]