Natural electromagnetic radiation sounding multichannel detection method

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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Problems solved by technology

[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