| 矿井瞬变电磁法中多匝回线电感对目标体探测的影响 |
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| 引用本文： | 杨海燕,岳建华,王梦倩,刘志新.矿井瞬变电磁法中多匝回线电感对目标体探测的影响[J].物探与化探,2007,31(1):34-37. |
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| 作者姓名： | 杨海燕 岳建华 王梦倩 刘志新 |
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| 作者单位： | 中国矿业大学,资源学院,江苏,徐州,221008 |
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| 基金项目： | 高等学校博士学科点专项科研项目;中国矿业大学校科研和教改项目 |
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| 摘 要： | 线圈的自感耦合作用使瞬变电磁早期时间道信号严重失真.为研究瞬变电磁早期信号的特性,讨论了多匝线圈与单匝线圈的自感系数的关系,得出线圈自感信号振幅的理论表达式,推导了单匝和多匝回线的电感公式,分析了回线匝数和回线边长的变化对目标体响应曲线的影响.研究成果对进一步研究瞬变电磁早期场的附加效应打下了基础,同时为提取早期数据的研究提供参考.
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| 关 键 词： | 瞬变电磁法 线圈自感 关断时间 |
| 文章编号： | 1000-8918（2007）01-0034-04 |
| 收稿时间： | 2006-04-28 |
| 修稿时间： | 2006-04-282006-11-15 |
THE INFLUENCE OF THE INDUCTION OF MULTI-TURN COILS FOR TEM ON THE DETECTION OF BURIED OBJECTS IN UNDERGROUND MINES |
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| YANG Hai-yan,YUE Jian-hua,WANG Meng-qian,LIU Zhi-xin.THE INFLUENCE OF THE INDUCTION OF MULTI-TURN COILS FOR TEM ON THE DETECTION OF BURIED OBJECTS IN UNDERGROUND MINES[J].Geophysical and Geochemical Exploration,2007,31(1):34-37. |
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| Authors: | YANG Hai-yan YUE Jian-hua WANG Meng-qian LIU Zhi-xin |
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| Institution: | College of Mincral Resources and Environment Sciences, CUMT, Xuzhou 221008, China |
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| Abstract: | Due to the self-transition of the loop,the early signal of TEM suffers great distortion.In order to study characteristics of the early signal with TEM,the authors formulated self-induction formulae for single coil and multi-turn coils,deduced theoretical expressions for the amplitude of the loop self-induction signal,and gave the induction of single coil and multi-axial coils.The response curve of buried object affected by the coils and the length of loop's change are also studied.The results obtained lay a foundation for further studies of the additional effect of the early field and can serve as reference data for further researches. |
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| Keywords: | transient electromagnet self-induction of loop turn-off time |
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