地下管线探测电磁场异常特征的理论与实践  

THE THEORY AND PRACTICE OF THE ABNORMAL CHARACTER OF ELECTROMAGNETIC FIELD IN DETECTING UNDERGROUND PIPELINE

作　　者：张宗岭[1] 张效良 

机构地区：[1]中南大学,长沙410083 [2]中南地勘局六队,黄石435006

出　　处：《地质与勘探》2002年第1期83-85,共3页Geology and Exploration

摘　　要：分析了频率域中一次电磁场和二次电磁场的分布特征 ,以及利用Hx、Hz 的异常特征点确定地下金属管线的理论依据 ,指出了在复杂地质情况下进行正常场改正的必要性。最后利用不同类型管线检测实际资料 ,说明了方法的有效性。The distributing features of the primary electromagnetic field and the secondary electromagnetic field in the frequency domain are analyzed. The theory to ascertain the underground iron pipeline by abnormal point of Hx, Hz is proposed and it is necessary to perform normal field-correction under the complex geologic condition. The efficiency of this method by case data of different type of pipeline is showed.

关 键 词：地下管线 电磁场 频率域电磁异常场 金属管线 

分 类 号：TU990.3[建筑科学—市政工程] P631.3[天文地球—地质矿产勘探]