CN118962818A - A mine transient electromagnetic detection method and process - Google Patents
A mine transient electromagnetic detection method and process Download PDFInfo
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- CN118962818A CN118962818A CN202411019941.XA CN202411019941A CN118962818A CN 118962818 A CN118962818 A CN 118962818A CN 202411019941 A CN202411019941 A CN 202411019941A CN 118962818 A CN118962818 A CN 118962818A
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
- G01V3/28—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/34—Transmitting data to recording or processing apparatus; Recording data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
本发明提供一种矿井瞬变电磁的探测方法，包括以下步骤：S1：布置回型线圈并发射电磁场；在地表需要探测的位置上布置一个不接地的回型线圈，通过电流激发线圈产生变化的电磁场，并向地下发射一次脉冲电磁场。S2：产生感应电流：地下物质对电磁场的变化产生感应电流。S3：布置接收线圈并接收感应电流产生的变化信号：在地表上设置一个接收线圈，用来接收接收感应电流的变化信号，在断电后，感应电流由于热损耗而随时间衰减。将瞬变电磁主机、接收主机、充电锂电池、接收线圈和线缆设置在箱体的内部，探测装置为一体化装置，并设置有万向轮和把手，方便对探测装置进行移动和携带，节省人力物力。
The present invention provides a method for detecting transient electromagnetic in mines, comprising the following steps: S1: arranging a circular coil and emitting an electromagnetic field; arranging an ungrounded circular coil at a position on the surface that needs to be detected, exciting the coil with current to generate a changing electromagnetic field, and emitting a pulse electromagnetic field underground. S2: generating an induced current: underground materials generate an induced current in response to changes in the electromagnetic field. S3: arranging a receiving coil and receiving a change signal generated by the induced current: a receiving coil is arranged on the surface to receive the change signal of the induced current. After power failure, the induced current decays over time due to heat loss. The transient electromagnetic host, the receiving host, the rechargeable lithium battery, the receiving coil and the cable are arranged inside the box. The detection device is an integrated device and is provided with universal wheels and a handle, which is convenient for moving and carrying the detection device, saving manpower and material resources.
Description
Technical Field
The invention relates to the technical field of mine incidentally electromagnetic detection, in particular to a detection method and a detection process of mine transient electromagnetic.
Background
The mine transient electromagnetic is to emit a primary pulse magnetic field to underground by using an ungrounded loop coil, and observe a secondary induction vortex field caused in underground substances by receiving a lower heating during the intermittent period of the primary pulse magnetic field so as to detect the resistivity of the underground substances and explore and evaluate the underground structure of the mine.
The instrument for detecting the mine is a transient electromagnetic instrument in the prior art, the transient electromagnetic instrument has the characteristics of large turn-off time short message quantity, high resolution, large dynamic range and high stability, and comprises a transmitting host, a receiving coil and a transmitting cable, wherein the transmitting host, the receiving coil and the transmitting cable are all of independent structures, and the transmitting host and the receiving host are all placed in the protective box, so that the transient electromagnetic instrument is inconvenient to move and carry and can occupy more manpower and material resources.
Therefore, the invention discloses a method and a process for detecting mine transient electromagnetic.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a method and a process for detecting mine transient electromagnetic so as to solve the problems in the prior art, according to the invention, the transient electromagnetic host, the receiving host, the rechargeable lithium battery, the receiving coil and the cable are arranged in the box body, the detection device is an integrated device, and the universal wheels and the handles are arranged, so that the detection device is convenient to move and carry, and manpower and material resources are saved.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the method for detecting the transient electromagnetic of the mine comprises the following steps of:
S1: arranging a loop coil and emitting an electromagnetic field; an ungrounded loop coil is arranged at the position to be detected on the ground surface, a variable electromagnetic field is generated by exciting the coil by current, and a pulse electromagnetic field is emitted to the ground.
S2: generating an induction current: the subsurface material produces an induced current to the change in the electromagnetic field.
S3: arranging a receiving coil and receiving a change signal generated by an induced current: a receiving coil is arranged on the ground surface and is used for receiving a change signal of the induction current, and after the power is off, the induction current decays with time due to heat loss.
S4, data acquisition and processing: the received change signals are transmitted to data acquisition equipment, and then the data are processed through a mathematical model and a calculation method, and are converted into underground structures and electric characteristics.
Furthermore, the loop-shaped coils in the step S1 may be arranged to be of corresponding specifications according to requirements, and the loop-shaped coils are electrically connected with the transient electromagnetic host.
Further, in the step S3, the receiving coil is electrically connected to the receiving host, and the receiving coil moves in the loop coil area.
Further, in the step S4, through analysis and processing of the collected data, the thickness, conductivity, magnetic permeability, and the like of the bottom layer can be deduced, so that exploration and evaluation can be performed on the mine area.
A detection process of mine transient electromagnetism comprises the following steps:
Step 1: the detection device is moved to the area to be detected and the arrangement of the detection device is completed.
Step 2: and calibrating the detection equipment and performing transient electromagnetic detection on the mine area.
Step 3: collecting detection data, processing the collected data, and evaluating the mine area according to the processed data
Further, still include detection device, detection device includes box and bottom plate, the inboard of box is provided with battery storage tank, first host computer storehouse, second host computer storehouse and puts the thing groove, first host computer storehouse and second host computer storehouse set up respectively at battery storage tank and put the top in thing groove, the inside in battery storage tank has the lithium cell that charges through support fixed mounting, transient electromagnetic host computer and receiver are installed respectively to the inside in first host computer storehouse and second host computer storehouse, put the receiving mechanism of placing in thing groove, the top of box has the upper cover through hinge movable mounting, the recess has been seted up to the inside of one side outer wall of upper cover, the upper cover sets up at the top of transient electromagnetic host computer and receiver, the lithium cell that charges links to each other with transient electromagnetic host computer and receiver electricity through the electronic box, be provided with the baffle through the pivot activity on the outer wall of the corresponding box in thing groove of putting.
Further, receiving mechanism includes the U type cover, the fixed limiting plate that is provided with in top of U type cover, the inboard of U type cover is fixed and is provided with solid fixed ring, gu fixed receiving coil that is provided with in bottom of fixed ring, the fixed centre pole that is provided with in top central point department of limiting plate, the fixed plate that is provided with in top of centre pole, the fixed block that is provided with in top bilateral symmetry of fixed plate, the draw-in groove has been seted up on the lateral wall of fixed block, the winding has the cable on the centre pole.
Further, the both sides of limiting plate correspond the top of U type cover and are provided with extrusion mechanism, extrusion mechanism includes the movable rod, the movable rod passes through pivot movable mounting in U type cover top both sides, the top of movable rod has the gag lever post through pivot movable mounting, the shape of gag lever post is "L" type, fixedly on the lateral wall of movable rod is provided with the rubber pad, correspond draw-in groove position department on the one end lateral wall of gag lever post and be provided with the lug, the lug joint is in the inside of draw-in groove.
Further, the air inlet has all been seted up to the inside of the inner wall in groove, first host computer storehouse, second host computer storehouse is accomodate to the battery, the inside of air inlet is fixedly provided with the dust screen, the air outlet has been seted up to the bottom in groove is accomodate to the battery, the inside fixed mounting of air outlet has the fan, the through-hole has been seted up to the inside of bottom plate corresponding air outlet position department, the internally mounted of through-hole has the filter screen.
Further, universal wheels are fixedly arranged at the four corners of the bottom plate, screw holes are formed in one end of the bottom plate, fixing nails are arranged in the screw holes in a screwed mode, handles are fixedly arranged on the outer wall of the box body above the corresponding fixing nails, and locks are arranged between one end of the upper cover and the box body.
The invention has the beneficial effects that: the invention relates to a method and a process for detecting transient electromagnetic of a mine, which comprise a box body, a bottom plate, universal wheels, a handle, a transient electromagnetic host, a receiving host, an upper cover, a baffle, an air inlet, a fixed pin, a battery storage groove, a first host bin, a second host bin, a storage groove, a rechargeable lithium battery, a groove, a fan, a through opening, a receiving mechanism, a U-shaped cover, a fixed ring, a receiving coil, a limiting plate, a movable rod, a rubber pad, a cable, a central rod, a fixed plate, a limiting rod and a fixed block.
1. According to the method and the process for detecting the transient electromagnetic of the mine, the cable is arranged in a detection area and is arranged into the loop-shaped transmitting coil, the cable is electrically connected with the transient electromagnetic host, the pulse magnetic field is conveniently transmitted to the subsurface, and the receiving coil is electrically connected with the receiving host, so that a changed signal is conveniently received, and the changed signal is processed; through setting up transient electromagnetic host computer, receiving host computer, rechargeable lithium cell, receiving coil and cable in the inside of box, detection device is integrated device to be provided with universal wheel and handle, conveniently remove and carry detection device, use manpower sparingly material resources.
2. According to the method and the process for detecting the transient electromagnetic of the mine, the receiving mechanism is placed in the storage groove, and the baffle is blocked at the outer side of the receiving mechanism under the action of the torsion spring rotating shaft, so that the receiving mechanism is convenient to store; through the rotation adjustment to movable rod and gag lever post, the cable is convenient to wind on the center pole, or take off from the center pole and use to can accomodate the cable, and through the joint effect of gag lever post and fixed block, the cable is convenient to extrude through movable rod and rubber pad, thereby place the cable loose; the movable rod and the limiting rod can be used as handles, and the receiving mechanism can be conveniently moved, so that the change induction current can be conveniently received.
3. According to the detection method and the detection process of the transient electromagnetic of the mine, the air inlets are formed in the side walls of the battery accommodating groove, the first host bin and the second host bin, the air outlets and the through holes are formed in the bottom of the battery accommodating groove, so that heat in the battery accommodating groove, the first host bin and the second host bin is conveniently discharged through the fan, and ventilation and heat dissipation are conveniently carried out on the transient electromagnetic host, the receiving host and the rechargeable lithium battery; the upper cover is provided with a groove, so that articles can be conveniently placed; the fixed nail that sets up can carry out spacingly to detection device, improves detection device's stability.
Drawings
FIG. 1 is a flow chart of a method for detecting transient electromagnetic in a mine;
FIG. 2 is a block diagram of a mine transient electromagnetic detection process of the present invention;
FIG. 3 is a front cross-sectional view of a mine transient electromagnetic detection process of the present invention;
FIG. 4 is an enlarged view of FIG. 3A of a mine transient electromagnetic detection process according to the present invention;
FIG. 5 is a block diagram of a receiving mechanism of a mine transient electromagnetic detection process of the invention;
FIG. 6 is a cross-sectional view of a receiving mechanism of a mine transient electromagnetic detection process of the present invention;
In the figure: 1. a case; 2. a bottom plate; 3. a universal wheel; 4. a handle; 5. a transient electromagnetic host; 6. a receiving host; 7. an upper cover; 8. a baffle; 9. an air inlet; 10. fixing nails; 11. a battery housing groove; 12. a first host bin; 13. a second host bin; 14. a storage groove; 15. a rechargeable lithium battery; 16. a groove; 17. a fan; 18. a through port; 19. a receiving mechanism; 20. a U-shaped cover; 21. a fixing ring; 22. a receiving coil; 23. a limiting plate; 24. a movable rod; 25. a rubber pad; 26. a cable; 27. a central rod; 28. a fixing plate; 29. a limit rod; 30. and a fixed block.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 6, the present invention provides a technical solution: the method for detecting the transient electromagnetic of the mine comprises the following steps of:
S1: arranging a loop coil and emitting an electromagnetic field; an ungrounded loop coil is arranged at the position to be detected on the ground surface, a variable electromagnetic field is generated by exciting the coil by current, and a pulse electromagnetic field is emitted to the ground.
S2: generating an induction current: the subsurface material produces an induced current to the change in the electromagnetic field.
S3: arranging a receiving coil and receiving a change signal generated by an induced current: a receiving coil is arranged on the ground surface and is used for receiving a change signal of the induction current, and after the power is off, the induction current decays with time due to heat loss.
S4, data acquisition and processing: the received change signals are transmitted to data acquisition equipment, and then the data are processed through a mathematical model and a calculation method, and are converted into underground structures and electric characteristics.
In this embodiment, the loop-shaped coil in the step S1 may be arranged to a corresponding specification according to the requirement, the loop-shaped coil is electrically connected with the transient electromagnetic host, the receiving coil in the step S3 is electrically connected with the receiving host, the receiving coil moves in the loop-shaped coil area, the analysis and the processing of the collected data in the step S4 can infer the thickness, the conductivity, the permeability and the like of the bottom layer, and further perform exploration and evaluation on the mine area, and the exploration and evaluation on the underground structure of the mine area can be completed through the steps S1-S4.
A detection process of mine transient electromagnetism comprises the following steps:
Step 1: the detection device is moved to the area to be detected and the arrangement of the detection device is completed.
Step 2: and calibrating the detection equipment and performing transient electromagnetic detection on the mine area.
Step 3: and acquiring detection data, processing the acquired data, and evaluating the mine area according to the processed data.
The embodiment also comprises a detection device, the detection device comprises a box body 1 and a bottom plate 2, the inner side of the box body 1 is provided with a battery storage groove 11, a first host machine bin 12, a second host machine bin 13 and a storage groove 14, the first host machine bin 12 and the second host machine bin 13 are respectively arranged at the tops of the battery storage groove 11 and the storage groove 14, a rechargeable lithium battery 15 is fixedly arranged in the battery storage groove 11 through a bracket, a transient electromagnetic host machine 5 and a receiving host machine 6 are respectively arranged in the first host machine bin 12 and the second host machine bin 13, a receiving mechanism 19 is arranged in the storage groove 14, an upper cover 7 is movably arranged at the top of the box body 1 through a hinge, a groove 16 is formed in the inner part of one side outer wall of the upper cover 7, the upper cover 7 is arranged at the top of the transient electromagnetic host machine 5 and the receiving host machine 6, the rechargeable lithium battery 15 is electrically connected with the receiving host machine 6 through an electric box, a movable baffle 8 is arranged on the outer wall of the corresponding box body 1 in the outer side of the storage groove 14, a rotating shaft 8 can be conveniently placed on the outer side of the receiving mechanism of the transient electromagnetic host machine 6 through a rotating shaft 8, a rotating shaft 19, a receiving mechanism can be conveniently placed on the rotating shaft of the receiving mechanism, and the receiving mechanism can be conveniently placed on the receiving mechanism 19 through the rotating shaft, and the receiving mechanism can be conveniently placed on the receiving mechanism, and the receiving mechanism can be conveniently used for receiving the electromagnetic host machine 19 through the electromagnetic machine, and can be conveniently placed by a user, and can be conveniently used in the receiving device.
In this embodiment, the receiving mechanism 19 includes a U-shaped cover 20, a limiting plate 23 is fixedly disposed at the top of the U-shaped cover 20, a fixing ring 21 is fixedly disposed at the inner side of the U-shaped cover 20, a receiving coil 22 is fixedly disposed at the bottom of the fixing ring 21, a central rod 27 is fixedly disposed at the central position of the top of the limiting plate 23, a fixing plate 28 is fixedly disposed at the top of the central rod 27, fixing blocks 30 are symmetrically disposed at two sides of the top of the fixing plate 28, clamping grooves are formed in the side walls of the fixing blocks 30, cables 26 are wound on the central rod 27, an extruding mechanism is disposed at two sides of the limiting plate 23 corresponding to the top of the U-shaped cover 20, the extruding mechanism includes a movable rod 24, the movable rod 24 is movably mounted at two sides of the top of the U-shaped cover 20 through a pivot, the top of movable rod 24 has gag lever post 29 through pivot movable mounting, the shape of gag lever post 29 is "L" type, fixedly be provided with rubber pad 25 on the lateral wall of movable rod 24, correspond draw-in groove position department on the one end lateral wall of gag lever post 29 and be provided with the lug, the lug joint is in the inside of draw-in groove, and the setting of U type cover 20 can increase the protection of receiving coil 22, and limiting plate 23 can be spacing to movable rod 24 of both sides for movable rod 24 can only rotate to both sides, conveniently separates movable rod 24 and cable 26, conveniently takes in or use the wire winding of cable 26, carries out the joint through lug and draw-in groove between with gag lever post 29 and the fixed block 30, makes things convenient for movable rod 24 and rubber pad 25 to carry out spacingly to cable 26, improves cable 26 wire winding's stability, prevents that cable 26 is scattered.
In this embodiment, air inlet 9 has all been seted up to the inside of the inner wall of battery storage tank 11, first host computer storehouse 12, second host computer storehouse 13, the inside of air inlet 9 is fixedly provided with the dust screen, the air outlet has been seted up to the bottom of battery storage tank 11, the inside fixed mounting of air outlet has fan 17, the inside of bottom plate 2 corresponds air outlet position department and has seted up opening 18, opening 18's internally mounted has the filter screen, and fan 17 work can be with battery storage tank 11, first host computer storehouse 12, the inside heat in second host computer storehouse 13 through the air outlet discharge, and the outside air gets into in battery storage tank 11, first host computer storehouse 12, the second host computer storehouse 13 through air inlet 9, conveniently dispels the heat to transient electromagnetic host computer 5, receiving host computer 6 and rechargeable lithium battery 15, and dust screen and filter screen that sets up can prevent that dust etc. from getting into the inside of box 1.
In this embodiment, universal wheel 3 is fixed mounting in bottom four corners position department of bottom plate 2, the screw has been seted up to the inside of the one end of bottom plate 2, staple 10 is installed to the inside spiro union of screw, the fixed handle 4 that is provided with in top that corresponds staple 10 on the outer wall of box 1, install the tool to lock between the one end of upper cover 7 and box 1, conveniently remove detection device through handle 4 and universal wheel 3, set up staple 10 and can bore ground, conveniently carry out spacingly detection device, improve detection device's stability.
When the detection method and the detection process of the mine transient electromagnetic are used, the box body 1 is pushed by the handle 4, the box body 1 moves to a mine area to be detected through the bottom plate 2 and the universal wheels 3, the baffle plate 8 is shifted to one side on the box body 1, the baffle plate 8 is separated from one side of the storage groove 14 and drives the torsion spring rotating shaft to store force, the receiving mechanism 19 is taken out from the inside of the storage groove 14, the baffle plate 8 is loosened, the baffle plate 8 reversely rotates under the torsion force of the torsion spring rotating shaft and is blocked at the outer side of the storage groove 14, the limiting rod 29 is pulled upwards on the receiving mechanism 19, the protruding block is pulled out from the inside of the clamping groove, the limiting rod 29 rotates at the top end of the movable rod 24 and rotates the limiting rod 29 and the movable rod 24 to two sides, the movable rod 24 drives the rubber pad 25 to be separated from the cable 26, the cable 26 is taken down from the central rod 27, then the movable rod 24 and the limiting rod 29 are reversely rotated, the limiting rod 29 is clamped with the fixed block 30 through the protruding block and the clamping groove, a loop-shaped transmitting coil is arranged at a detection position in a mine area by using one cable 26, two ends of the cable 26 are electrically connected with the transient electromagnetic host 5, the receiving coil 22 is electrically connected with the receiving host 6 by the other cable 26, the U-shaped cover 20 and the receiving coil 22 are moved by taking the limiting rod 29 and the movable rod 24 as handles, current is conveyed to the inside of the transmitting coil by the transient electromagnetic host 5, a pulse magnetic field is generated by exciting the transmitting coil through the current, induced current is generated after underground substances in the mine area induce the pulse magnetic field, the receiving host 6 is conveyed to the receiving host 6 after receiving a change signal generated by the induced current, and the receiving host 6 processes the received signal and evaluates the mine area; after the use, open gag lever post 29 and movable rod 24, around on center rod 27 with cable 26 to fix movable rod 24 through gag lever post 29 and the joint of fixed block 30, conveniently fix cable 26 through movable rod 24 and rubber pad 25, improve the stability of cable 26, rotate baffle 8 to one side, receiving mechanism 19 takes in the inside of putting thing groove 14, and cover upper cover 7 and fix at the top of box 1.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The method for detecting the transient electromagnetic of the mine is characterized by comprising the following steps of:
S1: arranging a loop coil and emitting an electromagnetic field; an ungrounded loop coil is arranged at the position to be detected on the ground surface, a variable electromagnetic field is generated by exciting the coil by current, and a pulse electromagnetic field is emitted to the ground.
S2: generating an induction current: the subsurface material produces an induced current to the change in the electromagnetic field.
S3: arranging a receiving coil and receiving a change signal generated by an induced current: a receiving coil is arranged on the ground surface and is used for receiving a change signal of the induction current, and after the power is off, the induction current decays with time due to heat loss.
S4, data acquisition and processing: the received change signals are transmitted to data acquisition equipment, and then the data are processed through a mathematical model and a calculation method, and are converted into underground structures and electric characteristics.
2. The method for detecting transient electromagnetic waves of a mine according to claim 1, wherein the method comprises the following steps: the loop-shaped coils in the step S1 can be arranged into corresponding specifications according to requirements, and the loop-shaped coils are electrically connected with the transient electromagnetic host.
3. The method for detecting transient electromagnetic waves of a mine according to claim 1, wherein the method comprises the following steps: in the step S3, the receiving coil is electrically connected to the receiving host, and the receiving coil moves in the loop coil area.
4. The method for detecting transient electromagnetic waves of a mine according to claim 1, wherein the method comprises the following steps: through analysis and processing of the collected data in the step S4, the thickness, the conductivity, the magnetic permeability and the like of the bottom layer can be deduced, and then exploration and evaluation are carried out on the mine area.
5. A detection process of mine transient electromagnetism is characterized in that: the method comprises the following steps:
Step 1: the detection device is moved to the area to be detected and the arrangement of the detection device is completed.
Step 2: and calibrating the detection equipment and performing transient electromagnetic detection on the mine area.
Step 3: and acquiring detection data, processing the acquired data, and evaluating the mine area according to the processed data.
6. The mine transient electromagnetic detection process of claim 5, further comprising a detection device, wherein: the detection device comprises a box body and a bottom plate, a battery storage groove, a first host machine bin, a second host machine bin and a storage groove are formed in the inner side of the box body, the first host machine bin and the second host machine bin are respectively arranged at the top of the battery storage groove and the top of the storage groove, a rechargeable lithium battery is fixedly mounted in the battery storage groove through a support, a transient electromagnetic host machine and a receiving host machine are respectively mounted in the first host machine bin and the second host machine bin, a receiving mechanism is arranged in the storage groove, an upper cover is movably mounted at the top of the box body through a hinge, a groove is formed in the inner portion of one side outer wall of the upper cover, the upper cover is arranged at the top of the transient electromagnetic host machine and the top of the receiving host machine, the rechargeable lithium battery is electrically connected with the transient electromagnetic host machine and the receiving host machine through an electric box, and a baffle is movably arranged on the outer wall of the corresponding box body in the outer side of the storage groove through a torsion spring rotating shaft.
7. The mine transient electromagnetic detection process of claim 6, wherein the detecting process comprises the following steps of: the receiving mechanism comprises a U-shaped cover, a limiting plate is fixedly arranged at the top of the U-shaped cover, a fixing ring is fixedly arranged on the inner side of the U-shaped cover, a receiving coil is fixedly arranged at the bottom of the fixing ring, a center rod is fixedly arranged at the center position of the top of the limiting plate, a fixing plate is fixedly arranged at the top end of the center rod, fixing blocks are symmetrically and fixedly arranged at the two sides of the top of the fixing plate, clamping grooves are formed in the side walls of the fixing blocks, and cables are wound on the center rod.
8. The mine transient electromagnetic detection process of claim 7, wherein: the utility model discloses a U type cover, including limiting plate, the both sides of limiting plate correspond the top of U type cover and are provided with extrusion mechanism, extrusion mechanism includes movable rod, the movable rod passes through pivot movable mounting in U type cover top both sides, the top of movable rod has the gag lever post through pivot movable mounting, the shape of gag lever post is "L" type, fixedly on the lateral wall of movable rod be provided with the rubber pad, correspond draw-in groove position department on the one end lateral wall of gag lever post and be provided with the lug, the lug joint is in the inside of draw-in groove.
9. The mine transient electromagnetic detection process of claim 6, wherein the detecting process comprises the following steps of: the battery is accomodate the inside of the inner wall of groove, first host computer storehouse, second host computer storehouse and has all been seted up the air inlet, the inside of air inlet is fixedly provided with the dust screen, the air outlet has been seted up to the bottom of groove is accomodate to the battery, the inside fixed mounting of air outlet has the fan, the through-hole has been seted up to the inside of bottom plate corresponding air outlet position department, the internally mounted of through-hole has the filter screen.
10. The mine transient electromagnetic detection process of claim 6, wherein the detecting process comprises the following steps of: the universal wheels are fixedly mounted at the four corners of the bottom plate, screw holes are formed in one end of the bottom plate, fixing nails are mounted in the screw holes in a screwed mode, handles are fixedly arranged on the outer wall of the box body above the corresponding fixing nails, and locks are mounted between one end of the upper cover and the box body.
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