| 电磁法在查明地下电缆和管道方面的应用 |
| |
| 引用本文： | 陈晦鸣.电磁法在查明地下电缆和管道方面的应用[J].物探与化探,1988,12(5):378-385. |
| |
| 作者姓名： | 陈晦鸣 |
| |
| 作者单位： | 中国地质大学 北京 |
| |
| 摘 要： | 对于探测地下金属管道、电缆等导体,电磁法比其它电测方法更为有效和方便。使用无参考线虚分量仪(DDW-1)并采用正交线圈装置观测磁场虚分量的方法,特别适合在城市(甚至在市区)探测金属导体。这是因为这种系统只有一台窄带接收机,激发时又不接地,并观测结果与收发距关系不大。一般说在电磁场中金属管道和电缆引起的感应电流可以近似为线电流,因而资料解释简单。本文展示了北京城区和郊区的某些实际成果。
|
THE APPLICATION OF ELECTROMAGNETIC METHOD TODETECTION OF UNDERGROUND CABLES AND PIPES |
| |
| Institution: | China University of Geosciencrs |
| |
| Abstract: | The electromagnetic method seems more effective and easy to handle thanother electric survey techniques in detecting such underground conductors asmetallic pipes and cables. The method of using nonreference-line imagin-ary component instrument (DDW-1) and adopting orthogonal circuit device toobserve imaginary components of magnetic field is especially suitable for dete-cting metallic conductors in cities (even in urban districts). This is becausethe system only has a narrow band receiver and is not connected to ground,and the observations have little to do with the transceiving distance. General-ly speaking, the induced current caused by metallic pipes and cables in theelectromagnetic field can be approximately regarded as line current, so the in-terpretation of the data is rather simple. The present paper gives some out-comes obtained in urban and suburban areas of Beijing. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《物探与化探》浏览原始摘要信息 |
| 点击此处可从《物探与化探》下载免费的PDF全文 |
|
