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Electrode Randomly Distributed Three-Dimensional High Density Electrical Data Acquisition Method

A high-density electrical method and data acquisition technology, applied in the field of electrical exploration, can solve the problems of increased randomness and complexity of observation system layout, uncertainty of exploration depth and resolution, and difficulty in carrying out on-site cable layout work. Avoid invalid or repetitive measurements, improve the resolution of imaging results, and make resurvey work fast and efficient

Active Publication Date: 2021-08-10
ZHEJIANG UNIV
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Problems solved by technology

Long and bulky cable connections not only increase labor intensity, but also the presence of obstacles (rivers, large buildings, traffic arteries, etc.) often make it difficult to implement on-site cable laying work
[0007] 3. The current high-density electrical 3D prospecting uses a regular grid to arrange measuring points / surveying lines, and the moving sequence of measuring points can only advance in two orthogonal directions along the measuring line, which can only be a pseudo-3D measurement, not a complete random placement of electrodes in the sense
2. The problem of measuring station rolling. When the number of instruments or collecting stations is difficult to meet the needs of covering the entire measurement area, how to find and move the used collecting stations to the station to be measured to realize rolling measurement
However, the random distribution of electrodes greatly increases the arbitrariness and complexity of the observation system layout, and the exploration depth and resolution have great uncertainty. It is a technical bottleneck restricting the popularization and application of this method

Method used

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  • Electrode Randomly Distributed Three-Dimensional High Density Electrical Data Acquisition Method

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Embodiment Construction

[0037] The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0038] random dipole device ( figure 1) is the most common dipole configuration method, which is more suitable for arbitrary arrangement of devices under complex surface conditions in the field. The lengths of the power supply electrode pair AB and the measuring electrode pair MN of random dipoles (dipole moment a), the distance between the midpoint o of AB and the midpoint o' of MN (electrode distance L) and the density of measuring points are used to distinguish the detection results It has an important influence on the detection rate and detection depth, and becomes the key to the design of the observation ...

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Abstract

The invention discloses a method for collecting randomly distributed three-dimensional high-density electric method data with electrodes. By designing the dipole moment, the density of measuring points and the effective measuring radius, the concept of effective measuring circles is used to optimize the slice collection of measuring points and the rolling of the measuring area. Measurement. And through targeted supplementary surveys, clear imaging of underground detection targets can be achieved. The measurement method of the invention is simple, orderly and efficient, and can realize continuous measurement of a complete measurement area with high collection efficiency.

Description

technical field [0001] The invention belongs to the technical field of electrical prospecting, and in particular relates to a method for collecting randomly distributed three-dimensional high-density electrical data of electrodes. Background technique [0002] The high-density resistivity method is an array prospecting method developed on the basis of common electrical prospecting. The traditional high-density electrical method is to connect all electrodes in series through cables and connect them to the instrument. The program-controlled switch inside the instrument is set according to the type of device (such as Wenner, dipole-dipole, unipolar-unipolar, etc.), and all electrodes Select the combination of power supply (A, B) and measurement (M, N) electrodes that meet the device setting requirements for automatic measurement, and then calculate the apparent resistivity value ρ corresponding to the device parameters s , and then through data processing (mainly inversion ima...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/00G01S19/42
CPCG01V3/00G01S19/42G01V3/02G01V3/38Y02A90/30
Inventor 王帮兵王佳馨唐卫红
Owner ZHEJIANG UNIV
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