关于频率电磁测深几个问题的探讨（八）-频率电磁测深与瞬变电磁测深的关系.pdfVIP

第43 卷 第1 期 煤田地质与勘探 Vol. 43 No.1 2015 年2 月 COAL GEOLOGY EXPLORATION Feb. 2015 文章编号: 1001-1986(2015)01-0081-05 关于频率电磁测深几个问题的探讨(八) 陈明生 ( 中煤科工集团西安研究院有限公司，陕西 西安 710077) : 从探测原理出发，说明人工源频率电磁测深与瞬变电磁测深的关系密切，这是一个问题的 两个方面，可以互相转换。两种探测方法实质是一样的，具有共性；但毕竟从频率域和时间域两 个侧面反映问题，又具有各自特性。两种方法的原理所依据的麦克斯韦方程，其正演公式可通过 傅立叶变换相互转换；从实际探测所发收的信号特征，场区划分与探测深度等主要方面阐明两种 探测方法异同，以加深对探测理论与方法的认识，结合实际择优应用。 ：频率电磁测深；瞬变电磁测深；麦克斯韦方程；傅立叶变换；收发信号；场区划分 ：P631 ：A DOI: 10.3969/j.issn.1001-1986.2015.01.017 On the relationship between the frequency electromagnetic sounding with the tran- sient electromagnetic sounding CHEN Mingsheng (Xian Research Institute , China Coal Technology and Engineering Group Corp, Xian 710077, China) Abstract: This paper, from the detection principle, describes the close relationship between the artificial source frequency electromagnetic sounding and the transient electromagnetic sounding. It is two aspects of a problem and can be converted each other. Two kinds of detection methods are essentially the same, they have the same charac- ters. But after all the problem is reflected from the frequency domain and time domain, the two domains have their own characteristics. The principle of two methods is based on Maxwells equations, the forward formulas of two methods can be converted by Fourier transform, the actual detection signal characteristics of the sending and re- ceiving, field region division and other major aspects, the similarities and differences between two kinds of detec- tion methods are illustrated to deepen the understanding of detection theory and m