CN110376653B - Folding type transient electromagnetic detection device and method suitable for tunnel and road surface - Google Patents
Folding type transient electromagnetic detection device and method suitable for tunnel and road surface Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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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
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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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
- G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
- G01V3/165—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
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Abstract
The transient electromagnetic transmitting coil carrying device comprises a foldable support, a telescopic pipe and sliding rollers, the edges of the foldable support are provided with the sliding rollers, and frames of the foldable support are connected through the telescopic pipe; a transmitting coil holder is detachably arranged on the frame of the foldable support and used for holding a transmitting coil, and a receiver of the transmitting coil is arranged in the middle of the detection frame; the detection device comprises a detection frame, wherein a plurality of transmitting coil holders are arranged on the detection frame and used for holding transmitting coils, a receiver of the transmitting coils is arranged in the middle of the detection frame, and transient electromagnetic detection of all positions and directions is realized by adjusting the positions of the transient electromagnetic transmitting coil carrying devices and the angles between the transmitting coils and the foldable supports.
Description
Technical Field
The disclosure belongs to the field of geophysical exploration electromagnetic detection, and particularly relates to a folding type transient electromagnetic detection device and method suitable for tunnels and pavements.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
A tunnel is formed by digging in the underground or rock mass structure, and then buildings with various functions are built, which is a form of developing and utilizing underground resources by human beings. The large-scale construction of civil engineering, particularly tunnel engineering in China, and the forecast of unfavorable geological disasters of the engineering are very important to the completion of the quality and quantity guarantee of the engineering. In the engineering excavation process, advanced geological forecast is carried out on the unexplored area so as to find out geological disasters such as cavities, water inrush and the like which possibly occur in the front, and the possible risks and potential safety hazards in construction are reduced.
The working principle of the transient electromagnetic method is that a primary pulse magnetic field is transmitted to the underground by using an ungrounded return line or a ground line source, a secondary eddy current field is observed by using a coil or a ground electrode during the interval of the primary pulse magnetic field, and the geoelectric characteristics of different depths can be obtained by measuring the time-varying rule of the secondary field in each time period after power failure. At present, the common transient electromagnetic equipment comprises a transmitting coil, a receiver and an operation host, and the transient electromagnetic operation can be roughly divided into two working modes according to engineering requirements: the road engineering type detects the vertical downward direction and the tunnel engineering type detects the horizontal direction. The plane of the transmitting coil is parallel to the ground to transmit electromagnetic signals to the ground, and the plane of the transmitting coil is perpendicular to the ground to be parallel to the tunnel face to transmit electromagnetic signals to the front of the tunnel face. The current transient electromagnetic detection technology has the following defects:
the transient electromagnetic detection method in the tunnel is very inconvenient, the transmitting coils are usually rubber multi-turn coils which are bound together, the areas of the transmitting coils are different according to the detection depth, but the side lengths of the transmitting coils are usually longer than the height of a person. When the geology in front of the tunnel face needs to be detected, the transmitting coil is difficult to be vertically placed to enable the plane where the transmitting coil is located to be parallel to the tunnel face. Often, the transmitter coil is bound to a square support frame which is manufactured in advance, and then an operator lifts the support frame on which the transmitter coil is bound and holds the receiver to work. The method is time-consuming, labor-consuming and low in efficiency, deviation caused by manual operation can be generated, and the forecasting precision is reduced; although the transient electromagnetic detection method is applied downwards on a horizontal ground without the above difficulties, a plurality of operators hold the transmitting coil and the receiver to work and move, the mode is still low in efficiency, the physical strength of the operators is greatly consumed, and the operation is more inconvenient particularly when the road surface is uneven and the road condition is poor.
Disclosure of Invention
The foldable transient electromagnetic detection device and method suitable for the tunnel and the road surface can replace a tunnel transient electromagnetic transmitting coil support frame in a traditional mode, assist a transient electromagnetic instrument to complete horizontal and vertical detection tasks, ensure accuracy of received signals, save a large amount of manpower and material resources and improve working efficiency.
According to some embodiments, the following technical scheme is adopted in the disclosure:
the utility model provides a foldable transition electromagnetic detection device, transition electromagnetic emission coil carrying apparatus and detecting device suitable for tunnel and road surface, wherein:
the transient electromagnetic transmitting coil carrying device comprises a foldable support, a telescopic pipe and sliding rollers, wherein the sliding rollers are arranged at the edge of the foldable support, and frames of the foldable support are connected through the telescopic pipe;
a transmitting coil holder is detachably arranged on the frame of the foldable support and used for holding a transmitting coil, and a receiver of the transmitting coil is arranged in the middle of the detection frame;
the detection device is including surveying the frame, survey the frame through the connecting piece can with collapsible support can dismantle the connection, and with angularly adjustable between the collapsible support, be provided with a plurality of transmitting coil holders on the detection frame, the transmitting coil holder is used for centre gripping transmitting coil, the centre of surveying the frame is provided with transmitting coil's receiver, through adjusting transient electromagnetic transmitting coil carrying device position, and transmitting coil with angle between the collapsible support realizes the transient electromagnetic detection of each position, direction.
As an alternative embodiment, each frame of the foldable support is provided with a transmitting coil holder, so that the surface of the transmitting coil is parallel to the ground.
As an alternative embodiment, the foldable support is sized to fit the transmitting coil.
As an alternative embodiment, two Y-shaped connecting pieces and two V-shaped connecting pieces are arranged on the foldable support, the detecting frame can be inserted, and when splicing is performed, the angle relationship between the detecting frame and the foldable support is adjusted through the connecting pieces, so that the carrying transmitting coil can be parallel to the face where the tunnel face is located.
As an alternative embodiment, the transmitting coil holder is made of a high-elasticity memory non-metal material, has a clamping position, and can be clamped on the corresponding frame and hold and fix the transmitting coil.
As an alternative embodiment, the telescopic pipes are provided with spring buckles to contract all the telescopic pipes and rotate the folding rotating shafts of the foldable supports.
As an alternative embodiment, a support bar is detachably connected to the foldable support, and the receiver is disposed on the support bar.
In an alternative embodiment, a support rod is detachably connected to the detection frame, and the receiver is disposed on the support rod.
Based on the working method of the device, when the road surface is detected, the transmitting coil is fixed on the foldable support by the transmitting coil buckle, the connector is installed and connected with the host, the foldable support is pushed to move on the measuring line until the detection work of all the measuring lines is completed, and the transient electromagnetic detection in the horizontal direction is completed;
based on the working method of the device, when the tunnel face is detected, the detection frame is connected with the foldable support through the connecting piece, the detection frame is made to be parallel to the face where the tunnel face is located, the transmitting coil is fixed on the detection frame through the transmitting coil buckle, the connector is installed on the detection frame and connected with the host, and the foldable support is pushed to move on the measuring line until the detection work of all the measuring lines is completed.
Compared with the prior art, the beneficial effect of this disclosure is:
this openly fully changes the mode of the manual handheld transmitting coil of tradition, receiver into and carries on, the pressure-bearing by the apparatus, has practiced thrift manpower and materials greatly. Meanwhile, the carrying mode avoids the possibility of error caused by manual operation, and improves the detection precision and efficiency.
The traditional mode that a transmitting coil and a receiver are manually held is replaced by carrying the transmitting coil and the receiver through the carrying device. Generally, 4-6 persons are required to participate in the implementation process of the traditional transient electromagnetic method, the whole detection work can be completed by only 2 persons after the optimization of the method, one person is responsible for controlling the moving direction of the device and moving the pushing device on a measuring line, and the other person is responsible for operating the host. The physical consumption intensity of operators is greatly reduced, a large amount of manpower and material resources are saved, the working efficiency is improved, the working time is reduced, and the good geological forecasting effect is ensured.
The method has the advantages of good effect, simple operation and capability of rapidly mastering the operation key points without complex skill training. The structure is simple, the manufacturing cost is low, the device is suitable for being repeatedly used and is not easy to damage, and the fund is saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic diagram of a transient electromagnetic transmitting coil mounting device.
Fig. 2 is a schematic view of the transient electromagnetic transmitting coil mounting device after being folded.
Fig. 3 is a detail display view of the road surface detection mode of the present disclosure.
FIG. 4 is a detail display view of an embedded auxiliary rod.
Fig. 5 is a detailed view of the transmitter coil holders I, II.
Fig. 6 is a detail illustration of the tunnel face detection mode of the present disclosure.
Fig. 7 is a detail illustration of the strut connector.
Fig. 8 is a schematic diagram of the operation of the present disclosure in performing road surface detection.
Fig. 9 is a schematic working diagram of the present disclosure when detecting a tunnel face.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only. Wherein: the telescopic rod connector comprises a circular telescopic pipe 1, a square telescopic pipe 2, a spring buckle 3, a sliding roller 4, a folding rotating shaft 5, a Y-shaped connecting piece 6, a V-shaped connecting piece 8, a transmitting coil holder I, a transmitting coil holder II 9, a receiver 10, an embedded auxiliary rod telescopic spring 11, a transmitting coil 12, a square embedded groove 13, a circular embedded groove 14 and a support rod connector 15.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.
As shown in fig. 1 and 3, a foldable transient electromagnetic detection device suitable for tunnels and pavements comprises a transient electromagnetic transmitting coil carrying device (1 round telescopic tube, 2 square telescopic tube, 3 spring buckle, 4 sliding rollers, 5 folding rotating shafts, 6Y-shaped connecting pieces, 7V-shaped connecting pieces), an embedded auxiliary rod, 8 transmitting coil clamp holders I, 9 transmitting coil clamp holders II and 15 supporting rod connectors. Wherein, two 5 folding pivots set up relatively, connect through 1 circular flexible pipe, 2 square flexible pipe between two 5 folding pivots, and the tip of 5 folding pivots all is provided with 4 sliding roller, connects through 6Y type connecting pieces between 5 folding pivots and the 1 circular flexible pipe, still is provided with 7V type connecting pieces in the 5 folding pivots to the joint support pole.
The transient electromagnetic transmitting coil carrying device is provided with a plurality of 8 transmitting coil holders I and 9 transmitting coil holders II for holding transmitting coils.
The transient electromagnetic transmitting coil carrying device is provided with an embedded auxiliary rod, the embedded auxiliary rod mainly comprises a rod body, and the rod body is provided with 11 embedded auxiliary rod telescopic springs, 13 square embedded grooves and 14 circular embedded grooves. The 13 square embedded grooves and the 14 round embedded grooves are respectively matched with the 2 square telescopic pipes and the 1 round telescopic pipes. The embedded auxiliary rod is provided with 10 receivers.
As shown in fig. 6, the wireless transmitter further comprises an auxiliary frame, the auxiliary frame comprises a frame body, and the frame body is also provided with a plurality of 8 transmitter coil holders I and 9 transmitter coil holders II for holding transmitter coils.
An embedded auxiliary rod is arranged on the frame body, and a receiver 10 is arranged on the embedded auxiliary rod.
The auxiliary frame is connected with the transient electromagnetic transmitting coil carrying device through the connecting piece, and the angle between the auxiliary frame and the transient electromagnetic transmitting coil carrying device is adjusted through the connecting piece, as shown in fig. 7, the angle between the notches of the connecting piece and the direction relation between the notches of the connecting piece meet the requirement of finally completing splicing work, and therefore detection operation in a tunnel is conducted. These can be determined by those skilled in the art according to specific situations and will not be described herein.
The round telescopic pipe 1, the square telescopic pipe 2, the spring buckle 3 and the folding rotating shaft 5 are main units which can exert the folding and easy-to-carry functions, and the device can be dragged and carried after being folded in a telescopic way.
6Y type connecting piece, 7V type connecting piece, 15 bracing piece connectors do not play a function when the road surface is surveyed, can accomplish tunnel face and survey the work after 7 bracing pieces of collocation carry out the concatenation work.
The embedded auxiliary rod is buckled at the center of the transient electromagnetic transmitting coil carrying device and is perpendicular to a 2-square extension tube at the center of the device to form a cross shape and carry 10 receivers.
The transmitting coil holder is flexibly assembled and disassembled according to requirements, and has the function of fixing the heavy transmitting coil on the carrying device. The transmission coil holder is divided into two types I and II according to different positions of the transmission coil holder, and the two types I and II correspond to circular and square groove positions.
Preferably, the transient electromagnetic transmitting coil carrying device can complete clamping and fixing of the multi-turn transmitting coil by matching with transmitting coil clamping devices in different shapes, so that the surface where the transmitting coil is located is parallel to the ground, and the specific requirement of detecting operation on the underground deep part can be completed.
Preferably, the transient electromagnetic transmitting coil carrying device is provided with two Y-shaped connecting pieces and two V-shaped connecting pieces, and the two Y-shaped connecting pieces and the two V-shaped connecting pieces can be inserted into the supporting rods. The special shape is formed after the supporting rod connector and the 7 supporting rods are matched during splicing work, a transmitting coil can be carried to be parallel to the face where the face is located, and the special requirement of detecting operation on the front of the face in a tunnel can be met.
Preferably, the length and the width of the transient electromagnetic transmitting coil carrying device are designed to be about 2.5m, and the transient electromagnetic transmitting coil carrying device can float up and down properly according to the difference of the area and the side length of the transmitting coil.
Preferably, the embedded auxiliary rod meets the requirement of a specific size, the square embedded groove of the embedded auxiliary rod can be clamped into the square telescopic pipe, and the circular embedded groove of the embedded auxiliary rod can be clamped into the circular telescopic pipe. Two extension springs are arranged to firmly fix the embedded auxiliary rod on the transient electromagnetic transmitting coil carrying device, so that looseness cannot occur.
Preferably, the transmitting coil holder is made of a high-elasticity memory nonmetal material, does not generate signal interference, can be buckled on the round telescopic pipe, the square telescopic rod and the support rod and can hold and fix the transmitting coil, and the transmitting coil holder has the characteristics of high elasticity, memory, easiness in disassembly and firmness in fixation.
Preferably, the round telescopic pipe and the square telescopic pipe are provided with spring buckles, and can be stretched according to working requirements. Two sides of the transmitting coil carrying device are provided with folding rotating shafts to enable the transmitting coil carrying device to be foldable. Under the non-operating condition, all flexible pipes of shrink rotate folding pivot, can drag whole carrying device and remove, and is light and handy portable, convenient the removal.
Preferably, the device is made of high-strength and high-toughness nonmetal materials, does not contain metal materials, does not generate transient electromagnetic signal interference, ensures accurate results, and is not easy to deform or damage. The embedded auxiliary rod, the Y-shaped connecting piece, the V-shaped connecting piece and the supporting rod connector have the characteristics of good wear resistance and high strength and toughness, and are not easy to slide, fall off, loosen and the like with the device.
Road surface detection:
opening the folded transient electromagnetic transmitting coil carrying device, and stretching the telescopic pipe to be flat;
installing a plurality of transmitting coil holders I and transmitting coil holders II around the device, and buckling an embedded auxiliary rod at the central position;
and installing a transmitting coil, clamping the transmitting coil in a transmitting coil clamp holder to form a square, and checking whether the transmitting coil is fixed or not. Mounting and fixing a receiver, and connecting all transient electromagnetic instruments such as a host machine and the like;
starting a host machine, and pushing the device to move on a measuring line until the detection work of all measuring lines is completed;
the receiver, the transmitting coil holder and the embedded auxiliary rod are disassembled and stored, the telescopic pipe is contracted, and the device is folded and kept properly.
Detecting the tunnel face:
opening the folded transient electromagnetic transmitting coil carrying device, and stretching the telescopic pipe to be flat;
splicing work: 2 longest support rods are inserted into the Y-shaped connecting piece, and the rest 5 support rods are spliced by matching with 2 support rod connectors. A plurality of transmitting coil holders I are mounted around the support rod, as shown in fig. 6.
And installing a transmitting coil, clamping the transmitting coil in a transmitting coil clamp holder to form a square, and checking whether the transmitting coil is fixed or not. Mounting and fixing a receiver, and connecting all transient electromagnetic instruments such as a host machine and the like;
starting a host, and pushing the device to move on the tunnel face survey line until the detection work of all survey lines is completed;
the receiver, the transmitting coil, the supporting rod connector, the transmitting coil holder and the embedded auxiliary rod are disassembled and stored, the telescopic pipe is contracted, and the device is folded and stored properly.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides a foldable transition electromagnetic detection device suitable for tunnel and road surface, characterized by: transient electromagnetic emission coil carrying device and detection device, wherein:
the transient electromagnetic transmitting coil carrying device comprises a foldable support, a telescopic pipe and sliding rollers, wherein the sliding rollers are arranged at the edge of the foldable support, and frames of the foldable support are connected through the telescopic pipe; can dismantle on collapsible bracket's the frame and be provided with the transmitting coil holder for centre gripping transmitting coil, detecting device is including surveying the frame, survey the frame pass through the connecting piece can with collapsible bracket can dismantle the connection, and with angularly adjustable between the collapsible bracket, be provided with a plurality of transmitting coil holders on the detection frame, the transmitting coil holder is for centre gripping transmitting coil, the centre of surveying the frame is provided with transmitting coil's receiver, through the position that transient electromagnetic transmitting coil carrying devices locates of adjustment to and transmitting coil with angle between the collapsible bracket realizes the transient electromagnetic detection of each position, direction.
2. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: and each frame of the foldable support is provided with a transmitting coil holder, so that the surface of the transmitting coil is parallel to the ground.
3. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the size of the foldable support is matched with the transmitting coil.
4. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the foldable support is provided with two Y-shaped connecting pieces and two V-shaped connecting pieces, the detection frame can be inserted, and when splicing is carried out, the angle relation between the detection frame and the foldable support is adjusted through the connecting pieces, so that the carrying transmitting coil can be parallel to the face where the tunnel face is located.
5. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the transmitting coil holder is made of a high-elasticity memory nonmetal material, has a clamping position, and can be clamped and fixed on the corresponding frame.
6. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the telescopic pipes are provided with spring buckles to contract all the telescopic pipes and rotate the folding rotating shafts of the foldable supports.
7. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the foldable support is detachably connected with a supporting rod, and the receiver is arranged on the supporting rod.
8. A foldable transient electromagnetic surveying apparatus for tunnels and roadways as claimed in claim 1 wherein: the detection frame is detachably connected with a support rod, and the receiver is arranged on the support rod.
9. Method of operation of a device according to any of claims 1-8, characterized in that: when the pavement is detected, the transmitting coil is fixed on the foldable support by the aid of the transmitting coil buckle, the connector is installed and connected with the host, the foldable support is pushed to move on the measuring line until detection work of all the measuring lines is completed, and transient electromagnetic detection in the horizontal direction is completed.
10. Method of operation of a device according to any of claims 1-8, characterized in that: when the tunnel face is detected, the detection frame is connected with the foldable support through the connecting piece, the detection frame is parallel to the face where the tunnel face is located, the transmitting coil is fixed on the detection frame through the transmitting coil buckle, the connector is arranged on the detection frame and connected with the host, and the foldable support is pushed to move on a measuring line until the detection work of all measuring lines is completed.
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| CN201910702710.1A CN110376653B (en) | 2019-07-31 | 2019-07-31 | Folding type transient electromagnetic detection device and method suitable for tunnel and road surface |
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| CN201910702710.1A CN110376653B (en) | 2019-07-31 | 2019-07-31 | Folding type transient electromagnetic detection device and method suitable for tunnel and road surface |
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| CN117310825B (en) * | 2023-11-28 | 2024-02-13 | 新汶矿业集团有限责任公司孙村煤矿 | Wheel type transient electromagnetic detection equipment and operation method thereof |
| CN117647845B (en) * | 2024-01-29 | 2024-04-23 | 中国科学院精密测量科学与技术创新研究院 | Foldable radio frequency coil device for monitoring frozen soil active layer |
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