CN110618169B - High-density resistivity method electrode suitable for open-air iron ore stope - Google Patents
High-density resistivity method electrode suitable for open-air iron ore stope Download PDFInfo
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- CN110618169B CN110618169B CN201910880036.6A CN201910880036A CN110618169B CN 110618169 B CN110618169 B CN 110618169B CN 201910880036 A CN201910880036 A CN 201910880036A CN 110618169 B CN110618169 B CN 110618169B
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- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
A high-density resistivity method electrode suitable for an open-air iron ore stope comprises a hollow rod body and a light shield, wherein a hammering cap is arranged at the top end of the hollow rod body, a lead wire outlet hole is formed in the hollow rod body below the hammering cap, and the light shield is arranged below the lead wire outlet hole; the bottom end of the hollow rod body is a ground inlet end and is of a triangular pyramid structure; the light shield is funnel-shaped, a hollow rod body at the bottom of the inner side of the light shield is provided with a water injection hole, a pyramid surface at the ground entering end of the hollow rod body is provided with a water outlet hole, and the water injection hole and the water outlet hole are communicated by a water guide pipe; three springs which are uniformly distributed in the circumferential direction are arranged in a central pore passage at the ground inlet end of the hollow rod body, one end of each spring is welded on the inner wall of the central pore passage, and the other end of each spring is welded with a clamping plate; a binding post is clamped between the three clamping plates, one end of a lead is welded on the binding post, and the other end of the lead extends out of the hollow rod body through a lead outlet hole; the light shield is provided with folding umbrella ribs, the light shield is unfolded or folded through the folding umbrella ribs, and the outer surface of the light shield is provided with a strap; a handle is arranged on the hollow rod body below the light shield.
Description
Technical Field
The invention belongs to the technical field of goaf detection in an open-air iron ore stope, and particularly relates to a high-density resistivity method electrode suitable for an open-air iron ore stope.
Background
In the process of mineral resource development and utilization, due to the facts that random mining is conducted, and random mining is converted into overall mining in the process of mining integration, a plurality of unknown goafs exist in and around a plurality of mines, the unknown goafs do not have detailed geological data, part of the goafs can be filled with water and deformed, the unknown goafs seriously affect daily production of the mines, and the safety of stope workers and equipment is threatened all the time. Therefore, how to accurately detect the goaf becomes one of the safety problems that must be faced in the open-pit iron ore stope at the present stage.
At present, a high-density resistivity method is one of the most main goaf detection methods, and is based on the electrical difference between rock and soil bodies, whether the goaf exists is judged by researching the distribution rule of an underground current field, and meanwhile, information such as the occurrence position, size, burial depth and the like of the goaf can be explained and analyzed.
In the detection process by using a high-density resistivity method, a certain number of electrodes are required to be arranged at equal intervals along a measuring line so as to acquire data, and the electrodes are used as the most core data acquisition components and play a decisive role in the reliability of the data.
At present, the existing high-density resistivity method electrode is mainly manufactured by modifying a steel bar or an anchor rod, before measurement, the electrode needs to be inserted into the ground surface, and then a proper amount of water is poured on the ground surface at the position where the electrode is inserted, so that good conductive contact between the electrode and the ground is ensured.
However, in the process of laying the electrodes, because no shielding object exists in the open-air iron ore stope, the electrodes can be exposed to the sunlight for a long time, and after the electrodes are laid, when data acquisition is started, water poured on the ground surface of the insertion part of the electrodes is easy to volatilize, so that a relatively humid environment cannot be maintained between the electrodes and the ground, the conductive contact between the electrodes and the ground is poor, and the accuracy of data acquisition is finally influenced.
Furthermore, if the earth surface at the measurement point is a hard rock base surface, the conventional high-density resistivity method electrode cannot be completely inserted into the earth surface, and the overall quality of the data is also affected.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the high-density resistivity method electrode suitable for the open-pit iron ore stope, which can enable the electrode to be in a good light shading environment, can continuously and automatically replenish water for the electrode grounding end inserted into the ground surface, can enable the electrode and the ground to be kept in a relatively humid environment for a long time, effectively improves the conductive contact between the electrode and the ground, ensures the data acquisition precision, and can better adapt to the situation that the ground surface is a hard rock base surface.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-density resistivity method electrode suitable for an open-air iron ore stope comprises a hollow rod body and a light shield, wherein a hammering cap is installed at the top end of the hollow rod body, a lead wire outlet hole is formed in the hollow rod body below the hammering cap, and the light shield is arranged on the hollow rod body below the lead wire outlet hole; the bottom end of the hollow rod body is a ground inlet end, and the ground inlet end of the hollow rod body adopts a triangular pyramid structure; the light shield adopts a funnel-shaped structure, a water injection hole is formed in the hollow rod body corresponding to the bottom of the inner side of the light shield, a water outlet hole is formed in the pyramid surface of the ground entrance end of the hollow rod body, and a water guide pipe is communicated between the water injection hole and the water outlet hole; a spring is arranged in a central pore channel at the ground inlet end of the hollow rod body, one end of the spring is welded on the inner wall of the central pore channel, and the other end of the spring is welded with a clamping plate; spring quantity is three and circumference equipartition settings, and all the welding has splint on every spring, and the centre gripping has the terminal between three splint, and wire one end welding is on the terminal, and the wire other end passes through the wire hole and stretches out the hollow body of rod.
The light shield is provided with folding umbrella ribs, the light shield is unfolded or folded through the folding umbrella ribs, and the outer surface of the light shield is provided with a strap.
A handle is arranged on the hollow rod body below the light shield.
The pyramid surface of the ground end of the hollow rod body is provided with a water guide groove, and the water outlet hole is positioned in the water guide groove.
The invention has the beneficial effects that:
the high-density resistivity method electrode suitable for the open-air iron ore stope can enable the electrode to be in a good light shading environment, meanwhile, can continuously and automatically supplement water for the electrode grounding end inserted into the underground surface, can enable the electrode and the ground to be kept in a relatively humid environment for a long time, effectively improves the conductive contact between the electrode and the ground, ensures the data acquisition precision, and can be well suitable for the situation that the ground surface is a hard rock base surface.
Drawings
FIG. 1 is a schematic diagram of a high density resistivity method electrode suitable for use in an open cast iron mine site according to the present invention;
in the figure, 1-hollow rod body, 2-lens hood, 3-hammering cap, 4-wire outlet, 5-water injection hole, 6-apopore, 7-aqueduct, 8-spring, 9-splint, 10-terminal, 11-wire, 12-strap, 13-handle.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, the high-density resistivity method electrode suitable for an open-air iron ore stope comprises a hollow rod body 1 and a light shield 2, wherein a hammering cap 3 is installed at the top end of the hollow rod body 1, a lead wire outlet hole 4 is formed in the hollow rod body 1 below the hammering cap 3, and the light shield 2 is arranged on the hollow rod body 1 below the lead wire outlet hole 4; the bottom end of the hollow rod body 1 is a ground inlet end, and the ground inlet end of the hollow rod body 1 adopts a triangular pyramid structure; the light shield 2 adopts a funnel-shaped structure, a water injection hole 5 is formed in the hollow rod body 1 corresponding to the bottom of the inner side of the light shield 2, a water outlet hole 6 is formed in the pyramid surface of the ground entering end of the hollow rod body 1, and a water guide pipe 7 is communicated between the water injection hole 5 and the water outlet hole 6; a spring 8 is arranged in a central pore channel at the ground inlet end of the hollow rod body 1, one end of the spring 8 is welded on the inner wall of the central pore channel, and the other end of the spring 8 is welded with a clamping plate 9; spring 8 quantity is three and circumference equipartition setting, and all the welding has splint 9 on every spring 8, and the centre gripping has terminal 10 between three splint 9, and 11 one end welding of wire are on terminal 10, and the hollow body of rod 1 is stretched out through wire hole 4 to the 11 other end of wire.
The sunshade 2 is provided with folding umbrella ribs, the sunshade 2 is unfolded or folded through the folding umbrella ribs, and the outer surface of the sunshade 2 is provided with a strap 12.
A handle 13 is arranged on the hollow rod body 1 below the light shield 2.
The water guide groove is formed in the pyramid surface of the ground entering end of the hollow rod body 1, the water outlet hole 6 is located in the water guide groove, and the wetting area can be effectively increased through the water guide groove.
In this embodiment, the hollow rod 1 is made of cemented carbide, the light shield 2 is made of pp plastic, the hammering cap 3 and the handle 13 are made of hard rubber, and the spring 8, the clamping plate 9, the binding post 10 and the wire 11 are made of copper.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
when the goaf detection is carried out in an open-air iron ore stope, after an electrode arrangement point is selected, one hand holds the handle 13 to enable the ground entering end of the hollow rod body 1 to be perpendicular to the ground surface, and the other hand holds the hammer and hammers the hammering cap 3 at the top end of the hollow rod body 1 until the ground entering end of the hollow rod body 1 is nailed into the ground surface.
Then, untie the outside winding strap 12 of lens hood 2, adjust the lens hood 2 from the state of packing up to the expansion state, the lens hood 2 of expansion state presents the infundibulate, pour into appropriate amount water into the lens hood 2 of expansion again, water in the lens hood 2 can loop through water injection hole 5, aqueduct 7, apopore 6 and guiding gutter get into the surface of the earth around the hollow body of rod 1 income ground end, lens hood 2 has played the effect of retaining container simultaneously, can make the water injection process continuously go on automatically, and then make the electrode and the earth between the long time keep in a relatively moist environment, the electrically conductive contact nature between electrode and the earth has also effectively been improved.
And finally, completing the wiring work of the lead 11, checking the grounding condition of the electrode, and performing data acquisition work after ensuring the good grounding condition.
After the data acquisition work is finished, the grounding end of the hollow rod body 1 is pulled out from the ground surface, then the light shield 2 is adjusted to the retracted state from the unfolded state, and the strap 12 is used for winding and fixing the light shield 2 to prepare for the next use of the electrode.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (1)
1. A high-density resistivity method electrode suitable for an open-air iron ore stope is characterized in that: the wire drawing device comprises a hollow rod body and a light shield, wherein a hammering cap is installed at the top end of the hollow rod body, a wire outlet hole is formed in the hollow rod body below the hammering cap, and the light shield is arranged on the hollow rod body below the wire outlet hole; the bottom end of the hollow rod body is a ground inlet end, and the ground inlet end of the hollow rod body adopts a triangular pyramid structure; the light shield adopts a funnel-shaped structure, a water injection hole is formed in the hollow rod body corresponding to the bottom of the inner side of the light shield, a water outlet hole is formed in the pyramid surface of the ground entrance end of the hollow rod body, and a water guide pipe is communicated between the water injection hole and the water outlet hole; a spring is arranged in a central pore channel at the ground inlet end of the hollow rod body, one end of the spring is welded on the inner wall of the central pore channel, and the other end of the spring is welded with a clamping plate; the number of the springs is three, the springs are uniformly distributed in the circumferential direction, clamping plates are welded on each spring, a wiring terminal is clamped between the three clamping plates, one end of a lead is welded on the wiring terminal, and the other end of the lead extends out of the hollow rod body through a lead outlet; the light shield is provided with folding umbrella ribs, the light shield is unfolded or folded through the folding umbrella ribs, and the outer surface of the light shield is provided with a strap; a handle is arranged on the hollow rod body below the light shield; the pyramid surface of the ground end of the hollow rod body is provided with a water guide groove, and the water outlet hole is positioned in the water guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910880036.6A CN110618169B (en) | 2019-09-18 | 2019-09-18 | High-density resistivity method electrode suitable for open-air iron ore stope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910880036.6A CN110618169B (en) | 2019-09-18 | 2019-09-18 | High-density resistivity method electrode suitable for open-air iron ore stope |
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| CN110618169A CN110618169A (en) | 2019-12-27 |
| CN110618169B true CN110618169B (en) | 2021-10-19 |
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| CN114019567A (en) * | 2021-09-16 | 2022-02-08 | 核工业二四三大队 | Power supply electrode for geophysical prospecting suitable for arid desert area |
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