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A technology of electromagnetic radiation and detection method, which is applied in the field of natural electromagnetic radiation sounding and detection, and can solve problems such as dimensionless and unfavorable rock formation detection results
Inactive Publication Date: 2012-06-27
岳棋柱
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[0006] The purpose of the present invention is to provide a multi-channel detection method for natural electromagnetic radiation sounding, which solves the impact of natural field source changes in the detection records due to the change of natural field sources over time when single-point detection is used, especially for deep resistivity differences Unobvious detection of thin rock layers is not conducive to obtaining fine changes in geological conditions and non-dimensional detection results of rock layers of interest in data comparison
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specific Embodiment approach 2
[0090] The specific steps of a natural electromagnetic radiation sounding multi-channel detection method are:
[0091] The first step is to build a detection system
[0092] A natural electromagnetic radiation depth-sounding multi-channel detection method is realized by a multi-channel detection system, and the detection system includes: multiple detection subsystems and a remote data processing center. Among them, the detection subsystem includes: electric field sensor, pre-amplifier, post-amplifier, double-balanced mixer, narrow-band IF filter, precision detector, feedback circuit, local signal generator, peak detector, valley detector, Subtractor, Adder, Divider, A / D Converter, D / A Converter, Flag Signal Generator and Computer. The data collected and stored by the ground detection device is preprocessed by the computer and then transmitted to the remote data processing center through the network.
[0093] The second step is to determine the layout of the measuring points ...
specific Embodiment approach 3
[0130] The specific steps of a natural electromagnetic radiation sounding multi-channel detection method are:
[0131] The first step is to build a detection system
[0132] A natural electromagnetic radiation depth-sounding multi-channel detection method is realized by a multi-channel detection system, and the detection system includes: multiple detection subsystems and a remote data processing center. Among them, the detection subsystem includes: electric field sensor, pre-amplifier, post-amplifier, double-balanced mixer, narrow-band IF filter, precision detector, feedback circuit, local signal generator, peak detector, valley detector, Subtractor, Adder, Divider, A / D Converter, D / A Converter, Flag Signal Generator and Computer. The data collected and stored by the ground detection device is preprocessed by the computer and then transmitted to the remote data processing center through the network.
[0133] The second step is to determine the layout of the measuring points ...
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Abstract
The invention discloses a natural electromagnetic radiation sounding multichannel detection method. An effect of sounding by using the same natural field source at the same time in a wide range is achieved by adopting a multi-channel ground detecting system; and an influence that natural field intensity and frequency distribution change along with time when performing single-point detection is overcome to realize fine contrast between detection results so as to improve detection quality and work efficiency. The invention discloses a contrast method for converting dimensionless relative resistivity (rhor) of a concerned rock stratum into dimensional apparent resistivity (rhoa) or resistivity (rho), so that a geological interpretation level of the detection results is improved. Two-way data transmission link is established between a computer and a remote data processing center for reprocessing a preprocessed result of an exploratory area and providing a sounding result map. The data processing centre grasps work progress situation of each exploratory area at any time and provides information for adjusting work arrangement of the exploratory area when necessary.
Description
technical field [0001] The invention relates to a natural electromagnetic radiation depth-sounding detection method, in particular to a natural electromagnetic radiation depth-sounding multi-channel detection method. Background technique [0002] The natural electromagnetic radiation sounding detection method is a natural electromagnetic field source formed by natural electromagnetic radiation to detect underground geological structures and various mineral resources related to layered strata, including: oil, natural gas, coal, water, and can also be applied For engineering geology, archaeology and geological disaster prediction, including: landslides, natural earthquake prediction research. "Natural Electromagnetic Radiation Sounding Technology Method and Device (ZL98101408.9)" realizes the use of a single component of the natural electromagnetic field, that is, the electric field component, to perform single-point detection in the free space near the surface, and provides d...
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