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A circle detection method for anisotropy of geology at different depths

A technology of anisotropy and detection method, applied in the field of geological exploration, can solve the problems of reducing the quality of observation, the adverse effect of fine comparison of observation data, etc., to achieve the effect of large detection range, overcoming the influence of time change, and large exploration depth

Inactive Publication Date: 2020-01-14
张道清
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a ring-shaped detection method for geological anisotropy at different depths, which can quickly judge the anisotropy of geoelectricity at different depths by detecting the anisotropy of geoelectricity at different depths, and at the same time solve the problem of In the current profile or single-point frequency sounding method, the observation data at the same physical observation point at different times changes due to the natural field source changing with time, which has an adverse effect on the fine comparison of observation data at different observation points at different times , the problem of reducing the quality of observation

Method used

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  • A circle detection method for anisotropy of geology at different depths
  • A circle detection method for anisotropy of geology at different depths

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Experimental program
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Effect test

Embodiment 1

[0033] The method for detecting geological anisotropy rings at different depths, the specific steps are as follows:

[0034] (1) Observation point design:

[0035] Set a circle in the test area, and arrange m pairs of electrodes on the same circle (such as figure 1 (A)), respectively n 1 and n 1 ', n 2 and n 2 ', n 3 and n 3 ', n 4 and n 4 '...n m and n m 'A pair of electrodes consisting of, where, m≥4, n 1 and n 1 ', n 2 and n 2 ', n 3 and n 3 ', n 4 and n 4 '...n m and n m 'Respectively on the circumference of the same diameter; the potential difference between the electrode pairs arranged on the circumference is not less than 0.1mv, if the potential difference between each electrode pair is less than 0.1mv, the potential difference is increased by expanding the radius of the circumference;

[0036] (2) Potential difference test

[0037] Conduct potential observation at the same frequency on each electrode pair at the same time, and measure the potential...

Embodiment 2

[0044] The method for detecting geological anisotropy rings at different depths, the specific steps are as follows:

[0045] (1) Observation point design:

[0046] Set a circle in the measurement area, and arrange m electrodes on the same circle (such as figure 1 (B)), respectively n 1 , n 2 , n 3 , n 4 ... n m , while setting a common reference electrode n 0 , among them, m≥8; the electrodes arranged on the circumference and n 0 The potential difference between them is not less than 0.1mv, the common reference electrode n 0 The distance to the center of the circle is not less than 5 times the diameter of the circle;

[0047] (2) Potential measurement

[0048] Conduct potential observation of the same frequency on each electrode at the same time, and measure the point electrode n m with common reference electrode n 0 The potential difference between each measurement point n m Potential Vn m ; Wherein, the frequency range is 0.01-10000Hz;

[0049] (3) Processing o...

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Abstract

The invention discloses a circle detection method for anisotropy of geology at different depths. The method specifically comprises the following steps: design of an observation point: arranging a plurality of electrodes or electrode pairs on a circle; and testing potential of each point at the same moment, and rapidly judging anisotropy of the geology of different depths by detecting anisotropy ofgeoelectricity at different depths. The method can be used for detecting characteristics of geology of geologic structures and rock (ore) electrical properties at different depths at the same measuring point to obtain anisotropy characteristics of the geologic structures; the detection depth can range from several meters to thousands of meters; and meanwhile, the influence of a natural electric field changing with time during detection is overcome, fine comparison between detection results is realized, and the detection quality and precision are improved.

Description

technical field [0001] The invention belongs to the technical field of geological exploration, and in particular relates to a circular detection method for geological anisotropy at different depths. Background technique [0002] With the development of the economy, geological work requires more and more exploration depth and exploration precision, especially the booming hot dry rock technology in recent years has put forward higher requirements for geophysical workers; effective Studying the anisotropy of rock structures at different depths will be of great significance to the study of deep underground geological structures. [0003] At present, the research on the anisotropy of geological structures at different depths is through online or surface detection and then inferring the underground geological conditions at different depths at each point; at the same point, often due to the influence of multi-stage structures, the The geological conditions will change greatly; dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/00G01V3/38
CPCG01V3/00G01V3/38
Inventor 张道清廖先锋王松港朱永磊
Owner 张道清
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