CN112987108B - Fixed source type transient electromagnetic automatic scanning device and method for tunnel - Google Patents
Fixed source type transient electromagnetic automatic scanning device and method for tunnel Download PDFInfo
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- CN112987108B CN112987108B CN202110097634.3A CN202110097634A CN112987108B CN 112987108 B CN112987108 B CN 112987108B CN 202110097634 A CN202110097634 A CN 202110097634A CN 112987108 B CN112987108 B CN 112987108B
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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
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
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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
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
- G01V2003/084—Sources
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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
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
- G01V2003/085—Receivers
Abstract
The invention provides a fixed source type transient electromagnetic automatic scanning device and method for a tunnel, which comprises a first telescopic rod and a second telescopic rod which are mutually and vertically connected, wherein the first end of the first telescopic rod is movably connected with a base, and the first end of the second telescopic rod penetrates through a through hole of the first telescopic rod; the first end of the second telescopic rod is connected with the first end of the telescopic rail through a first telescopic sling, the second end of the second telescopic rod is connected with the second end of the telescopic rail through a second telescopic sling, a transmitting coil is detachably fixed on the second telescopic rod, a receiving probe capable of moving along the rail is arranged on the telescopic rail, and a receiving and withdrawing bar is detachably fixed in the receiving probe; the method can replace a tunnel transient electromagnetic manual detection method in a traditional mode, carries out transient electromagnetic horizontal and vertical direction detection tasks, is convenient to operate and high in integration level, improves the measurement precision and realizes automatic measurement.
Description
Technical Field
The disclosure relates to the technical field of transient electromagnetic detection, in particular to a fixed-source transient electromagnetic automatic scanning device and method for a tunnel.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The transient electromagnetic method utilizes a grounded line source or an ungrounded return line to emit a primary pulse magnetic field to a detection target body, and utilizes a coil to observe a secondary induction eddy current field caused in a detection target medium during the interval of the primary pulse magnetic field to detect the resistivity, so that the conditions of caves, cracks and water content in the detection target are found out.
The transient electromagnetic method measuring device is composed of a transmitting coil, a receiving winding bar and a data processing host.
The inventor finds that in the actual operation process, a plurality of turns of coils are usually bound together, an operator holds the square PVC plastic support frame and the receiving loop bar to detect the tunnel face, and manual measurement is difficult under the condition of poor tunnel conditions; and the existing support frame hardly ensures the loop quality of the coil, and the size and the weight of the equipment are large, so that the transmitting and receiving coil is difficult to measure according to the measuring line with the preset height and angle, the accuracy and the quality of the measuring result are influenced, and the construction and measurement efficiency in the engineering with the large tunnel face area is low.
Disclosure of Invention
In order to solve the defects of the prior art, the solid source type transient electromagnetic automatic scanning device and method for the tunnel can replace a tunnel transient electromagnetic manual detection method in a traditional mode, perform transient electromagnetic horizontal and vertical direction detection tasks, are convenient to operate, have high integration level, improve the measurement precision and realize automatic measurement.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
the first aspect of the disclosure provides a fixed-source transient electromagnetic automatic scanning device for a tunnel.
A fixed source type transient electromagnetic automatic scanning device for a tunnel comprises a first telescopic rod and a second telescopic rod which are mutually and vertically connected, wherein the first end of the first telescopic rod is movably connected with a base, and the first end of the second telescopic rod penetrates through a through hole of the first telescopic rod;
the first end of second telescopic link is connected with flexible orbital first end through first flexible hoist cable, and the second end of second telescopic link is held with flexible orbital second through the flexible hoist cable of second and is connected, and detachable is fixed with transmitting coil on the second telescopic link, is equipped with on the flexible track and can follows orbital movement's receiving probe, and detachable is fixed with the receipts in the receiving probe and withdraws the line stick.
As some possible implementation manners, the first end of the second telescopic rod is connected with the first telescopic sling through the first hoisting device, and the second end of the second telescopic rod is connected with the second telescopic sling through the second hoisting device.
As a further limitation, the device further comprises a control terminal, wherein the control terminal is electrically connected with the first telescopic rod, the second telescopic rod, the first hoisting device and the second hoisting device and is used for controlling the extension and the angle adjustment of the first telescopic rod, the extension and the contraction of the second telescopic rod and the extension and the contraction of each sling;
the control terminal is also connected with the receiving loop bar and a power module of the receiving probe and is used for receiving and processing the transient electromagnetic signal and controlling the movement of the receiving probe along the track.
As some possible implementations, the track direction of the telescopic track is parallel to the second telescopic rod.
As possible implementation modes, the first telescopic rod and the second telescopic rod are both multi-stage automatic telescopic rods, the telescopic rods are controlled by a motor or an air cylinder or a hydraulic cylinder, and the motor or the air cylinder or the hydraulic cylinder is connected with the control terminal.
As some possible realization modes, the receiving probe comprises a probe chassis, a plurality of pulleys matched with the telescopic rails are fixed at the bottom of the probe bottom plate, and the receiving loop bar is detachably fixed on the probe chassis through a fixing part.
A second aspect of the present disclosure provides a stationary source type transient electromagnetic automatic scanning apparatus for a tunnel.
A fixed-source transient electromagnetic automatic scanning device for a tunnel comprises a first telescopic rod and a second telescopic rod, wherein the first end of the first telescopic rod is movably connected with a base, and the first end of the second telescopic rod is vertically and fixedly connected with the first telescopic rod;
the position, opposite to the first end of the second telescopic rod, on the first telescopic rod is connected with the first end of the telescopic rail through a first telescopic sling, and the second end of the second telescopic rod is connected with the second end of the telescopic rail through a second telescopic sling;
a transmitting coil is detachably fixed on the second telescopic rod, a receiving probe capable of moving along the track is arranged on the telescopic track, and a receiving and withdrawing wire rod is detachably fixed in the receiving probe.
As possible implementation manners, the position, opposite to the first end of the second telescopic rod, of the first telescopic rod is connected with the first telescopic sling through the first hoisting device, and the second end of the second telescopic rod is connected with the second telescopic sling through the second hoisting device.
As a further limitation, the device further comprises a control terminal, wherein the control terminal is electrically connected with the first telescopic rod, the second telescopic rod, the first hoisting device and the second hoisting device and is used for controlling the extension and the angle adjustment of the first telescopic rod, the extension and the contraction of the second telescopic rod and the extension and the contraction of each sling;
the control terminal is also connected with the receiving loop bar and a power module of the receiving probe and is used for receiving and processing the transient electromagnetic signal and controlling the movement of the receiving probe along the track.
As some possible implementations, the track direction of the telescopic track is parallel to the second telescopic rod.
As possible implementation modes, the first telescopic rod and the second telescopic rod are both multi-stage automatic telescopic rods, the telescopic rods are controlled by a motor or an air cylinder or a hydraulic cylinder, and the motor or the air cylinder or the hydraulic cylinder is connected with the control terminal.
As some possible realization modes, the receiving probe comprises a probe chassis, a plurality of pulleys matched with the telescopic rails are fixed at the bottom of the probe bottom plate, and the receiving loop bar is detachably fixed on the probe chassis through a fixing part.
A third aspect of the present disclosure provides a fixed-source transient electromagnetic automatic scanning method for a tunnel.
A fixed-source transient electromagnetic automatic scanning method for a tunnel, which utilizes the fixed-source transient electromagnetic automatic scanning device for the tunnel according to the first aspect of the disclosure, comprises the following steps:
fixing the scanning device to a tunnel face preset distance to ensure the stability of the device;
generating a rectangular scanning path and a transmitting coil loop according to the distance between the device and the tunnel face and the preset detection height and width through a control terminal;
the first telescopic rod rotates to a preset angle and stretches to a preset height, and the second telescopic rod extends to a preset length and drives the telescopic rail to extend to the preset length;
the device is started, and the receiving probe moves along the telescopic rail and measures until the receiving probe moves to the other side of the telescopic rail;
simultaneously lowering the first telescopic sling and the second telescopic sling by a preset height by using the first hoisting device and the second hoisting device, so that the telescopic track descends by the preset height, and starting to move the receiving probe at the height and continue to measure;
and repeating the steps after the device is started until the measurement of the preset scanning path is completed, wherein the first telescopic sling and the second telescopic sling are contracted, and the first telescopic rod is contracted to be in a state before the device is started.
Compared with the prior art, the beneficial effect of this disclosure is:
1. the device and the method greatly improve the working efficiency, save manpower and material resources, and replace the traditional mode of manually holding the transmitting coil and the receiving loop bar by fixing the transmitting coil and the receiving probe by the telescopic transmitting coil rectangular carrying frame (namely the combination of the first telescopic rod and the second telescopic rod);
the fixing of the preset shape of the transmitting coil is realized by adjusting the rectangular carrying frame of the telescopic transmitting coil, the receiving probe carries and receives the retraction coil rod, a scanning path is automatically generated and moves, the fixed-source automatic scanning detection is realized, only one worker needs to operate after the installation, and the device automatically controls the movement of the receiving probe;
the method has the advantages of good effect, simple operation and capability of rapidly mastering the operation key points without complex skill training.
2. The device and the method disclosed by the disclosure improve the accuracy of the measurement result, avoid errors caused by manual operation, are not influenced by operators, ensure that a moving path strictly follows a preset measuring line through the up-and-down hoisting of the telescopic rail and the uniform speed advance of the receiving probe, and improve the imaging quality;
the stability of a loop formed by the transmitting coil is improved by the aid of the high-rigidity transverse multi-stage automatic telescopic rod (namely the second telescopic rod), the winding bar fixing part is arranged in the middle of the receiving probe to fixedly receive the winding bar, the device runs automatically in the whole process, measurement is strictly carried out according to a preset scanning path, and the device is not influenced by operators.
3. According to the device and the method, after the device is installed at a preset position, only manual operation is needed to set relevant parameters of transient electromagnetic scanning, the source of the device is fixed, scanning is automatically carried out, meanwhile, measurement can be carried out under the condition that conditions in a tunnel hole are poor, and device control terminals are used for carrying out one-stop processing operation on the data output of later-period signal receiving data processing.
Advantages of additional aspects of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a schematic overall structure diagram of the device according to embodiment 1 of the present disclosure.
Fig. 2 is a front view of the apparatus provided in embodiment 1 of the present disclosure.
Fig. 3 is a rear view of the device provided in embodiment 1 of the present disclosure.
Fig. 4 is a side view of the device provided in example 1 of the present disclosure.
Fig. 5 is a top view of the device provided in example 1 of the present disclosure.
Fig. 6 is a schematic view of the overall structure of the device provided in embodiment 1 of the present disclosure.
Fig. 7 is a front view of a receiving probe provided in embodiment 1 of the present disclosure.
Fig. 8 is a schematic diagram of a receiving probe setup provided in embodiment 1 of the present disclosure.
Fig. 9 is a front view of a scanning process provided in embodiment 1 of the present disclosure.
Fig. 10 is a side view of a scanning process provided by embodiment 1 of the present disclosure.
1. Hoisting the device; 2. a longitudinal multistage automatic telescopic device; 3. a fixed base; 4. a device control terminal; 5. receiving a probe; 6. a rotatable connection; 7. a transverse and longitudinal multistage automatic telescopic rod; 8. a sling; 9. a telescopic rail; 10. receiving a loop bar fixing piece; 11. a probe chassis; 12. a pulley; 13. a retraction coil bar is connected; 14. a transmitting coil; 15. tunnel face.
Detailed Description
The present disclosure is further illustrated by the following examples in conjunction with the accompanying drawings.
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 disclosure 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 disclosure. 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.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example 1:
the embodiment 1 of the present disclosure provides a fixed-source transient electromagnetic automatic scanning device for a tunnel, including:
the rectangular carrying frame of the telescopic transmitting coil consists of a longitudinal multistage automatic telescopic rod 2 (namely a first telescopic rod), a fixed base 3, a rotatable connecting piece 6 and a transverse multistage automatic telescopic rod 7 (namely a second telescopic rod);
a telescopic hanging rail system consists of a hoisting device 1, a sling 8 and a telescopic rail 9;
the receiving probe 5 consists of a receiving loop bar fixing piece 10, a probe chassis 11 and a pulley 12;
the device control terminal 4.
As shown in fig. 1-5;
the telescopic amount and the rotation amount of the longitudinal multistage automatic telescopic device 2 are determined by the distance between the device and the tunnel face and the height of the required transmitting coil, and the telescopic amount of the transverse multistage automatic telescopic rod 7 is determined by the required width of the transmitting coil.
The horizontal multi-stage automatic telescopic rod 7 is connected with the vertical multi-stage automatic telescopic device 2, namely one end of the horizontal multi-stage automatic telescopic rod 7 is embedded into the vertical multi-stage automatic telescopic device 2, and the hoisting device 1 is arranged at the top of the vertical multi-stage automatic telescopic device 2 and the end position of the horizontal multi-stage automatic telescopic rod 7.
It can be understood that, in some other embodiments, one end of the horizontal multi-stage automatic telescopic rod 7 penetrates through the top position of the vertical multi-stage automatic telescopic device 2, and two ends of the horizontal multi-stage automatic telescopic rod 7 are respectively provided with one hoisting device 1, so that a person skilled in the art can select the horizontal multi-stage automatic telescopic rod according to specific working conditions, and the description is omitted here.
The telescopic rail 9 is connected to the hoisting device 1 through a sling 8, and drives the telescopic rail to stretch to a preset length when the horizontal multi-stage automatic telescopic rod 7 stretches.
Vertical multistage automatic telescoping device 2 passes through rotatable connector 6 to be connected in unable adjustment base 3 upper portion, and in this embodiment, rotatable connector 6 can be the capstan winch also can be the motor that is used for rotation control, as long as can realize vertical multistage automatic telescoping device 2's rotation and angular adjustment can, and the skilled person in the art can select according to concrete operating mode, and here is no longer described repeatedly.
The fixed base 3 is provided with a device control terminal 4, so that manual operation is facilitated, and the device control terminal 4 integrates corresponding device control, signal receiving and data processing functions.
The transmitting coil is erected and fixed on a transverse multistage automatic telescopic rod 7, the telescopic hanging rail system moves the telescopic rail 9 in the vertical direction, the receiving probe 5 moves in the horizontal direction on the rail, the transmitting coil covers the tunnel face, and the receiving probe can scan in the horizontal and vertical directions within the coil range.
The control terminal realizes the functions of receiving transient electromagnetic signals and exporting post data processing data through the connection with the receiving winding bar and the built-in related software.
The device is contracted to the minimum size as shown in figure 6, so that the device can be conveniently transported and installed and is suitable for a smaller tunnel face.
As shown in fig. 7-8:
the receiving and withdrawing bar 13 is fixed on a receiving and withdrawing bar fixing part 10 connected on a probe chassis 11, a power device is arranged in the probe, and the bottom of the probe chassis 11 is provided with a pulley 12 which is used for being matched with a telescopic rail to realize the movement of the receiving probe along the rail.
Preferably, the device is made of high-strength and high-toughness non-metal materials, transient electromagnetic signal interference is not generated, the result is accurate, and deformation or damage is not easy to occur. The parts have the characteristics of good wear resistance and high strength and toughness, and the devices are not easy to slide, fall off, loosen and the like.
Preferably, the electronic equipment of the device control terminal is made of high-strength waterproof and corrosion-resistant materials to form a shell, so that the service life and the function operation of the device are ensured to be good.
As shown in fig. 9-10:
taking tunnel face measurement as an example, the embodiment also discloses a use method of the fixed-source transient electromagnetic automatic scanning device for the tunnel, which comprises the following steps:
fixing the device to one side of the bottom of the tunnel face at a certain distance to ensure the stability of the device;
automatically generating a rectangular scanning path and a transmitting coil loop according to the distance between the device and the tunnel face, the preset detection height and the preset width through a device control terminal 4;
the longitudinal multistage automatic telescopic device 2 rotates to a preset angle, the transverse multistage automatic telescopic rod 7 extends to a preset length, and meanwhile, the telescopic rail is driven to extend to the preset length;
fixing a transmitting coil on a transverse multi-stage automatic telescopic rod 7 in a telescopic transmitting coil rectangular carrying frame, installing and fixing a receiving loop bar 13 on a receiving loop bar fixing part 10, and meanwhile, placing a receiving probe 5 on one side of a telescopic rail 9 and connecting the receiving probe to a device control terminal 4;
starting the device, wherein the receiving probe 5 starts to move along the telescopic rail 9 and measure, and the receiving probe 5 moves to the other side of the telescopic rail 9;
the hoisting device 1 transfers the sling 8 by a certain length to enable the telescopic rail 9 to descend by a certain height, and the receiving probe 5 starts to move at the height and continues to measure;
repeating the steps until the measurement of the preset scanning path is completed, the sling 8 is contracted, and the longitudinal multistage automatic telescopic device 2 is contracted to a state before the device is started;
disassembling the transmitting coil 14, the receiving loop bar 13 and the receiving probe 5, and carrying out data processing and deriving related data through the device control terminal 4;
after the data is exported, the device control terminal 4 is shut down, the device is contracted to an initial state, and related devices are folded and then properly stored for the next use.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (9)
1. A solid source type transient electromagnetic automatic scanning device for a tunnel is characterized in that:
the telescopic device comprises a first telescopic rod and a second telescopic rod which are mutually and vertically connected, wherein the first end of the first telescopic rod is movably connected with a base, and the first end of the second telescopic rod penetrates through a through hole of the first telescopic rod;
the first end of the second telescopic rod is connected with the first end of the telescopic rail through a first telescopic sling, the second end of the second telescopic rod is connected with the second end of the telescopic rail through a second telescopic sling, a transmitting coil is detachably fixed on the second telescopic rod, a receiving probe capable of moving along the rail is arranged on the telescopic rail, and a receiving and withdrawing bar is detachably fixed in the receiving probe; the receiving probe comprises a probe chassis, a plurality of pulleys matched with the telescopic rails are fixed at the bottom of the probe bottom plate, and the receiving loop bar is detachably fixed on the probe chassis through a fixing piece.
2. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 1, characterized in that:
the first end of the second telescopic rod is connected with the first telescopic sling through the first hoisting device, and the second end of the second telescopic rod is connected with the second telescopic sling through the second hoisting device.
3. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 2, characterized in that:
the control terminal is electrically connected with the first telescopic rod, the second telescopic rod, the first hoisting device and the second hoisting device and is used for controlling the expansion and the angle adjustment of the first telescopic rod, the expansion and the contraction of the second telescopic rod and the expansion and the contraction of each sling;
the control terminal is also connected with the receiving loop bar and a power module of the receiving probe and is used for receiving and processing the transient electromagnetic signal and controlling the movement of the receiving probe along the track.
4. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 1, characterized in that:
the track direction of the telescopic track is parallel to the second telescopic rod;
alternatively, the first and second electrodes may be,
first telescopic link and second telescopic link are multistage automatic telescopic link, and through motor or cylinder or pneumatic cylinder control flexible, motor or cylinder or pneumatic cylinder are connected with control terminal.
5. A solid source type transient electromagnetic automatic scanning device for a tunnel is characterized in that:
the telescopic device comprises a first telescopic rod and a second telescopic rod, wherein the first end of the first telescopic rod is movably connected with a base, and the first end of the second telescopic rod is vertically and fixedly connected with the first telescopic rod;
the position, opposite to the first end of the second telescopic rod, on the first telescopic rod is connected with the first end of the telescopic rail through a first telescopic sling, and the second end of the second telescopic rod is connected with the second end of the telescopic rail through a second telescopic sling;
a transmitting coil is detachably fixed on the second telescopic rod, a receiving probe capable of moving along the track is arranged on the telescopic track, and a receiving winding rod is detachably fixed in the receiving probe; the receiving probe comprises a probe chassis, a plurality of pulleys matched with the telescopic rails are fixed at the bottom of the probe bottom plate, and the receiving loop bar is detachably fixed on the probe chassis through a fixing piece.
6. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 5, characterized in that:
the position on the first telescopic rod, which is opposite to the first end of the second telescopic rod, is connected with a first telescopic sling through a first hoisting device, and the second end of the second telescopic rod is connected with a second telescopic sling through a second hoisting device.
7. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 6, characterized in that:
the control terminal is electrically connected with the first telescopic rod, the second telescopic rod, the first hoisting device and the second hoisting device and is used for controlling the expansion and the angle adjustment of the first telescopic rod, the expansion and the contraction of the second telescopic rod and the expansion and the contraction of each sling;
the control terminal is also connected with the receiving loop bar and a power module of the receiving probe and is used for receiving and processing the transient electromagnetic signal and controlling the movement of the receiving probe along the track.
8. The fixed-source transient electromagnetic automatic scanning device for tunnels as claimed in claim 6, characterized in that:
the track direction of the telescopic track is parallel to the second telescopic rod;
alternatively, the first and second electrodes may be,
first telescopic link and second telescopic link are multistage automatic telescopic link, and through motor or cylinder or pneumatic cylinder control flexible, motor or cylinder or pneumatic cylinder are connected with control terminal.
9. A fixed source type transient electromagnetic automatic scanning method for a tunnel is characterized by comprising the following steps: the fixed-source transient electromagnetic automatic scanning device for tunnel according to any one of claims 1 to 8, comprising the following steps:
fixing the scanning device to a tunnel face preset distance to ensure the stability of the device;
generating a rectangular scanning path and a transmitting coil loop according to the distance between the device and the tunnel face and the preset detection height and width through a control terminal;
the first telescopic rod rotates to a preset angle and stretches to a preset height, and the second telescopic rod extends to a preset length and drives the telescopic rail to extend to the preset length;
the device is started, and the receiving probe moves along the telescopic rail and measures until the receiving probe moves to the other side of the telescopic rail;
simultaneously lowering the first telescopic sling and the second telescopic sling by a preset height by using the first hoisting device and the second hoisting device, so that the telescopic rail descends by the preset height, and starting to move the receiving probe at the height and continue to measure;
and repeating the steps after the device is started until the measurement of the preset scanning path is completed, wherein the first telescopic sling and the second telescopic sling are contracted, and the first telescopic rod is contracted to be in a state before the device is started.
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| CN110082762A (en) * | 2019-06-06 | 2019-08-02 | 北京市市政工程研究院 | A kind of underdamping antenna transient electromagnetic radar and the method for detecting tunnel-liner disease |
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