An electrode resistance reducing agent for resistivity detection

A technology of resistivity method and resistance reducing agent, applied in the field of electrode resistance reducing agent and its corresponding devices, can solve the problems of unstable effective conductive components, reducing grounding resistance, poor geological detection, etc., to achieve enhanced conductivity and lower resistivity , The effect of strong water absorption

Active Publication Date: 2019-09-27
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drag reducing agents generally include chemical drag reducing agents and physical drag reducing agents, but chemical drag reducing agents have problems such as unstable effective conductive components, easy to pollute the environment and groundwater, and generally cannot be used as coupling materials between electrodes and rocks; physical drag reducing agents Resistor is non-electrolyte solid powder as conductive material, which can effectively reduce grounding resistance and has good stability. It is a good coupling material, but physical resistance reducing agent is generally used to reduce the resistance between grounding body and soil, and The drag reduction speed is relatively slow
[0004] In summary, there are still many problems in the existing various types of drag reducing agents, especially for the drag reducing agent of the present invention that is used for tunnels or poor geological exploration of rock formations, due to its special use environment, the above-mentioned existing types The resistance reducing agent is not suitable, therefore, it is necessary to study a new electrode resistance reducing agent suitable for tunnel or rock formation resistivity detection

Method used

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  • An electrode resistance reducing agent for resistivity detection
  • An electrode resistance reducing agent for resistivity detection
  • An electrode resistance reducing agent for resistivity detection

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A preparation method for an electrode resistance reducing agent for resistivity method detection, comprising the steps of:

[0043] (1) Add 30% calcium-based bentonite and 10% sodium chloride into water, and stir to obtain a mixed solution;

[0044] (2) add 8% carbon fiber, 8% stainless steel fiber, 5% zinc powder, 5% aluminum powder, 5% copper powder in the mixed solution that step (1) obtains, mix homogeneously, for subsequent use; Described carbon fiber, stainless steel fiber The aspect ratio is about 1000-1300, 400-700, and the particle sizes of the zinc powder, aluminum powder, and copper powder are respectively between 0.2-0.5 μm, 5-8 μm, and 5-8 μm;

[0045] (3) In the mixture of step (2), continue to add 20% conductive cement, 4% plaster of paris and 5% copper sulfate, after mixing evenly, adjust the water content to between 40wt.%. Electrode resistance reducer.

experiment example 1

[0047] An electrode resistance reducing agent used for resistivity method detection, its preparation method is the same as that of Example 1, the difference is that: in terms of mass percentage, the resistance reducing agent includes the following components: 30% sodium bentonite, 8% carbon fiber, Stainless steel fiber 8%, zinc powder 5%, aluminum powder 5%, copper powder 5%, sodium chloride 10%, copper sulfate 5%, conductive cement 20%, plaster of paris 4%.

Embodiment 2

[0049] A preparation method for an electrode resistance reducing agent for resistivity method detection, comprising the steps of:

[0050] (1) Add 30% calcium-based bentonite and 9% sodium chloride into water, and stir to obtain a mixed solution;

[0051] (2) add 10% carbon fiber, 10% stainless steel fiber, 10% zinc powder, 8% aluminum powder, 8% copper powder in the mixed solution that step (1) obtains, mix homogeneously, for subsequent use; Described carbon fiber, stainless steel fiber The aspect ratio is about 1200-1500, 500-800, and the particle diameters of the zinc powder, aluminum powder, and copper powder are respectively between 0.2-0.5 μm, 8-10 μm, and 8-10 μm;

[0052] (3) In the mixture of step (2), continue to add 10% conductive cement, 5% plaster of paris and 4% copper sulfate, and after mixing evenly, adjust the water content to between 45wt.%. Electrode resistance reducer.

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Abstract

The invention relates to an electrode resistance reducing agent for detection in a resistivity method, and belongs to a ground conductive material. In terms of mass percentage, the resistance reducingagent comprises the following components: 30-60% of bentonite, 1-20% of carbon fiber, 1-20% of stainless steel fiber, 0.1-30% of zinc powder, 0.1-30% of aluminum powder, 0.1-30% of copper powder, 10-40% of conductive cement, 0.1-10% of a retarder, 0.1-20% of sodium chloride and 1-15% of copper sulfate. The resistance reducing agent has good resistance reducing performance, and has the effect of rapid reduction of the grounding resistance between electrodes and rocks, the electrodes can be coupled with the rocks well through the resistance reducing agent, so that the detection accuracy of theresistivity method is improved significantly; meanwhile, the intensity of the resistance reducing agent is not high, recycling of the electrodes is facilitated, and the working efficiency of detectionof the resistivity method is improved; and in addition, the resistance reducing agent has simple preparation, no toxic substance containing and no pollution to the environment and underground water.

Description

technical field [0001] The invention belongs to the technical field of unfavorable geological detection by resistivity method, and in particular relates to an electrode resistance reducing agent with low resistivity, good resistance reducing performance, good stability and low strength, which is suitable for rock resistivity method detection and its corresponding device . Background technique [0002] As an important electrical prospecting method, the resistivity method has a wide range of applications, whether it is in the general survey of metal and non-metallic minerals and the study of geological structures, or in hydrology, engineering, environmental geological surveys, and energy exploration. It has a good geological effect and plays an important role. However, when the detection object is rock, the resistivity of the rock is very high, and the contact between the electrode and the surrounding rock will be poor, which is manifested by a large contact resistance, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04
Inventor 林春金王成坤聂利超杨磊马亮周维马钊邵钧阳殷鑫
Owner SHANDONG UNIV
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