Transient electromagnetic quick three-dimensional human-machine interaction inversion method

A human-computer interaction, transient electromagnetic technology, which can be used in electrical/magnetic exploration, radio wave measurement systems, sound wave re-radiation, etc.

Inactive Publication Date: 2015-02-04
中国地质科学院地球物理地球化学勘查研究所
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Problems solved by technology

[0006] Aiming at the problems of large abnormal range, inaccurate positioning and insufficient use of three-component information in the current interpretation method of the fixed-source loop transient electromagnetic method, the present invention proposes a three-dimensional transient electromagnetic human-computer interaction based on the equivalent current loop theory. inversion method

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  • Transient electromagnetic quick three-dimensional human-machine interaction inversion method
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  • Transient electromagnetic quick three-dimensional human-machine interaction inversion method

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Embodiment Construction

[0022] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0023] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0024] 1 Theoretical formula of current loop

[0025] Assuming that the conductive thin plate is located in a uniform primary field, when the current in the transmitting loop is suddenly cut off and the primary field disappears instantly, according to Faraday’s law, in order to maintain the original uniform magnetic field in the conductor, eddy currents are immediately induc...

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Abstract

The invention relates to a transient electromagnetic quick three-dimensional human-machine interaction inversion method. The transient electromagnetic quick three-dimensional human-machine interaction inversion method includes that gathering geological information, physical geography information and physical logging information; using the information to analyze comprehensively to build a geo-electric model of a surrounding rock; using the model to forwardly calculate the TEM response of the surrounding rock, and calculating a pure anomaly field (three-component) according to the actual TEM response; using an electric current loop to be equivalent to the vortex of a target geological body generated by the excitation of a primary field at a time, enabling the field generated by the equivalent current loop to gradually get close to the three-component field value observed at the earth surface, and inverting to obtain the position, size, inclination angle, inclination direction and the other geometrical parameters of the current loop so as to obtain the information of the target geological body; judging whether the information is reasonable according to the known information, if so, obtaining the information of the target geological body to realize three-dimensional TEM human-machine interaction inversion, otherwise, comprehensively analyzing again to construct the geo-electric model of the surrounding rock, entering the next circulation, and stopping till the information is reasonable.

Description

technical field [0001] The invention relates to a transient electromagnetic fast three-dimensional human-computer interactive inversion method. Background technique [0002] Transient electromagnetic method (TEM) is an effective geophysical method for finding good conductive metal deposits. It is widely used and there are many successful examples of prospecting. The transient electromagnetic method of the fixed source loop device is mainly used in the detailed investigation stage to determine the more accurate geometric parameters such as the buried depth and boundary of the target geological body. In actual measurement, a rectangular launch loop with a side length of several hundred meters is often used, and the three-component transient response is observed on the survey line (including inside and outside the frame) perpendicular to the long side of the rectangle. Since the emission source can be fixed at a certain position close to the edge of the loop, a more powerful e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38
Inventor 武军杰邓晓红张杰王兴春杨毅智庆全
Owner 中国地质科学院地球物理地球化学勘查研究所
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