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DC field fixed-type power exploration method

A fixed, DC field technology, applied in the field of geophysical exploration, can solve the problems of scrapped measurement data, poor grounding, low work efficiency, etc., and achieve the effect of high measurement signal strength and improved stability

Inactive Publication Date: 2016-11-16
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "E-SCAN method" electrical prospecting technology has the following disadvantages: (1) The power supply electrode moves more times, the measurement time is too long, and the work efficiency is low
(2) Since the power supply electrode-by-power supply measurement method is adopted, when the power supply electrode is poorly grounded, all measurement data will be scrapped, resulting in waste of production costs
[0004] Although the above solution solves the deficiencies of the prior art to a certain extent, the power supply electrodes move more times, the measurement time is too long, and the work efficiency is low; the measurement method of power supply electrodes one by one power supply is adopted, and when the power supply electrodes are not well grounded In this case, all measurement data will be scrapped, resulting in waste of production costs

Method used

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  • DC field fixed-type power exploration method
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Examples

Experimental program
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Effect test

Embodiment 1

[0033] The DC field fixed power source exploration method includes the following steps:

[0034] A. Determine the grid pattern measurement network, each network point on the measurement network is a measurement point position, place the power supply electrode at one or more measurement point positions, and place the measurement electrode at other measurement point positions except the power supply electrode. at the position of the measuring point;

[0035] B. Supply power to the power supply electrodes, obtain a set of measurement data through the measurement electrodes, and analyze the data.

[0036] Fix the power supply electrodes at one or several arbitrary test positions, supply power one by one or at the same time, then other electrodes are used as measurement electrodes, and only need to measure once or a few times to complete all the measurement work, thus improving the efficiency of field exploration work and the stability of the measured data.

[0037]In step A, the...

Embodiment 2

[0040] The first step is to determine the positions of the power supply electrodes. If there are multiple power supply electrodes, the positions of the multiple power supply electrodes need to be determined.

[0041] The second step is to select the power supply electrode form: unipolar power supply, dipole power supply.

[0042] ①Unipolar power supply

[0043] Such as figure 2 One power supply electrode is shown, where point A is the power supply electrode, and M is the measurement electrode (except power supply electrode A, all other electrodes are measurement electrode M). The positions of all grid points on the ground can be selected as the positions of A and M.

[0044] Such as image 3 As shown, A is the positive current pole of the power supply electrode, and B is the negative current pole of the power supply electrode. The B pole is located at infinity of the measuring network, generally 3 to 5 times the distance of the long side of the measuring network. Similarl...

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Abstract

The invention belongs to the technical field of geophysical prospecting, and in particular relates to a direct current field fixed power source prospecting method. A. Determine the grid pattern measurement network, each network point on the measurement network is a measurement point position, place the power supply electrode at one or more measurement point positions, and place the measurement electrode at other measurement point positions except the power supply electrode. At the position of the measuring point; B. Supply power to the power supply electrode, obtain a set of measurement data through the measurement electrode, and analyze the data. The advantage is: fix the power supply electrodes at one or several arbitrary test positions, and supply power one by one or at the same time, then other electrodes are used as measurement electrodes, and all the measurement work can be completed by only measuring once or a few times, thus improving field testing. Exploration work efficiency and measurement data stability.

Description

technical field [0001] The invention belongs to the technical field of geophysical prospecting, and in particular relates to a direct current field fixed power source prospecting method. Background technique [0002] The exploration principle of the direct current method is: the power supply electrodes A and B (A is the positive current pole, B is the negative current pole) supply direct current to the ground, form a stable direct current electric field in the underground medium, and then pass through multiple measuring electrodes M ( or N) Measure the potential value of each measuring point on the ground; when there are multiple different media bodies underground, the conductivity characteristics of these media bodies are different, and the potential values ​​measured on the ground are reflected in differences , so as to analyze the spatial distribution of the underground medium. At present, domestic and foreign exploration methods of direct current method mainly adopt the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/04
CPCG01V3/04
Inventor 刘云宋滔王赟
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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