Detection method of transient electromagnetic multi-frequency fusion and application

A technology of transient electromagnetics and detection methods, applied in electric/magnetic exploration, radio wave measurement systems, measurement devices, etc., can solve problems such as misinterpretation of different frequency vertical resolutions

Active Publication Date: 2019-05-31
SHANDONG UNIV
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Problems solved by technology

However, according to the inventor's understanding, in the interpretation of multiple scattered frequency data, there is often

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  • Detection method of transient electromagnetic multi-frequency fusion and application
  • Detection method of transient electromagnetic multi-frequency fusion and application
  • Detection method of transient electromagnetic multi-frequency fusion and application

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[0031] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0033] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinati...

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Abstract

The present disclosure provides a detection method of transient electromagnetic multi-frequency fusion and application. Multiple sets of transmission frequencies are employed for collection to obtaindifferent induced electromotive forces and experiment data distributed at different time channels, data after various frequencies are fused in a coincidence time domain and the data of the specific time domain of each frequency are combined in chronological sequence to obtain multi-channel time domain data to obtain multi-frequency fused data; the combined data is subjected to partitioning on thetime domain to achieve average time channel distribution and obtain an induced electromotive force decay curve; the junction of the regression fusion data and the data of the specific time domain of multiple frequencies is subjected to smooth processing, and by employing the average time channel distribution, the data after smooth processing is substituted into original data to perform two-dimensional imaging inversion and obtain a resistivity profile.

Description

technical field [0001] The disclosure relates to a detection method and application of transient electromagnetic multi-frequency fusion. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Transient electromagnetic method is also called time domain electromagnetic method (TEM), which uses ungrounded return line or grounding line source to transmit a pulsed magnetic field to the ground. The method of observing the secondary eddy current field. Simply put, the basic principle of the transient electromagnetic method is the law of electromagnetic induction. The geoelectric characteristics at different depths can be obtained by measuring the time-varying law of the secondary field in each time period after power failure. [0004] When transient electromagnetics are used to detect unfavorable geological bodies, it is found that the low-frequency...

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Application Information

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IPC IPC(8): G01V3/08
Inventor 苏茂鑫夏腾刘轶民薛翊国邱道宏赵莹
Owner SHANDONG UNIV
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