Radar-assisted device for tunnel face geological prediction

Abstract

The utility model discloses a radar auxiliary device for tunnel face geology forecast, including guide rail, guide rail horizontal installation is in tunnel ground, be provided with scale line on the guide rail, and the first sliding block is slidably fitted on the guide rail, second mobile mechanism sets up on the first sliding block, and second mobile mechanism includes second sliding block, and second mobile mechanism is used for driving second sliding block along the height direction of tunnel movement, and distance sensor is located the right above of second sliding block, be provided with third mobile mechanism on second sliding block, and third mobile mechanism is used for driving the clamping mechanism to be close to or away from the face, and the clamping mechanism is used for fixing the radar antenna. The utility model discloses through the mutual cooperation of first mobile mechanism, second mobile mechanism and third mobile mechanism, not only can obtain the multiple detection data of the face of same height in turn, can also drive radar antenna and move in the height direction of face, thereby the geological condition of the face of entire tunnel is convenient for obtaining.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a radar-assisted device for geological prediction at the tunnel face. Background Technology

[0002] In tunnel excavation, advanced geological prediction is a crucial technical aspect for ensuring construction safety and preventing geological disasters (such as water inrush, mudslides, collapses, and rock bursts). Ground-penetrating radar, as a convenient, rapid, and non-destructive short-range geophysical exploration method, has been widely used in advanced geological prediction.

[0003] Traditional radar detection operations typically require two to three workers to lift the radar antenna, bringing its emitting surface tightly against the tunnel face, and then generating electromagnetic waves for scanning. At the same height, workers must sequentially acquire multiple intervals of detection data from left to right or right to left, and then stitch these interval data together to obtain the cross-sectional view of the tunnel face at that height. To obtain the cross-section of the entire tunnel face, the above operation of acquiring multiple intervals of detection data from left to right or right to left must be repeated at different heights. However, this manual operation method makes it difficult to ensure that the radar antenna moves at a constant height, thus failing to form a horizontal detection trajectory, and it is also difficult to accurately control the spacing between measurement points within the set distance. Utility Model Content

[0004] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a radar-assisted device for geological prediction at the tunnel face.

[0005] A radar-assisted device for geological prediction at tunnel faces includes:

[0006] A guide rail is horizontally installed on the tunnel floor; the guide rail is provided with scale lines.

[0007] A first moving mechanism is used to drive a first slider to slide along a guide rail;

[0008] A second moving mechanism is disposed on the first slider. The second moving mechanism includes a second slider and is used to drive the second slider to move along the height direction of the tunnel.

[0009] A distance sensor is located directly above the second slider, and the distance sensor is used to detect the movement height of the second slider;

[0010] A clamping mechanism for securing the radar antenna;

[0011] The third moving mechanism is disposed on the second slider and is used to drive the clamping mechanism to move closer to or away from the working face, so that the radar antenna moves closer to or away from the working face.

[0012] A further embodiment is that the first moving mechanism includes a first stepper motor, the output end of which is fixedly connected to a first threaded rod, the middle of which passes through and is threadedly connected to a first slider.

[0013] A further embodiment is that the second moving mechanism includes a second stepper motor, the output end of which is fixedly connected to a second threaded rod, the middle part of which passes through and is threadedly connected to the second slider, and the second slider also slides with a guide rod, which is mounted on the first slider.

[0014] A further embodiment is that the clamping mechanism includes a fixed plate, an electric push rod is provided on the outer surface of the fixed plate, the output end of the electric push rod is fixedly connected to the clamping plate, and the clamping plate is slidably connected to the fixed plate.

[0015] A further option is that the fixing plate is Z-shaped.

[0016] A further embodiment is that a sliding plate is mounted on the outer surface of the fixing plate, and a fixing rod is slidably engaged with the sliding plate, the fixing rod being mounted on the outer surface of the second slider.

[0017] A further option is to provide a sliding groove on the fixing plate, which slides in conjunction with the clamping plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model uses anchor bolts to horizontally install the guide rail on the tunnel surface, and the first moving mechanism can drive the radar antenna to move along the guide rail, thereby facilitating the radar antenna to detect the geological conditions of the tunnel face along the horizontal detection trajectory;

[0019] (2) The present invention can conveniently obtain the horizontal movement distance of the radar antenna through the scale line; by setting a distance sensor, the distance sensor is used to detect the movement distance of the second slider in the height direction, which can eliminate the error caused by the staff relying on visual observation of the scale line to determine the movement height of the second slider;

[0020] (3) Through the cooperation of the first moving mechanism, the second moving mechanism and the third moving mechanism, this utility model can not only obtain multiple detection data of the tunnel face at the same height from left to right or from right to left, but also drive the radar antenna to move in the height direction of the tunnel face, thereby facilitating the acquisition of the geological conditions of the tunnel face. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main view structure of a radar auxiliary device for geological prediction at the tunnel face provided in this embodiment of the present invention;

[0023] Figure 2 This is a side view structural schematic diagram of a radar auxiliary device for geological prediction at the tunnel face provided in an embodiment of this utility model;

[0024] Figure 3 This is provided by the embodiment of the present utility model. Figure 2 A magnified view of the structure at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the clamping plate provided in an embodiment of the present utility model.

[0026] Reference numerals in the attached diagram: 1. Guide rail; 2. Scale line; 3. First stepper motor; 4. First threaded rod; 5. First slider; 6. Second stepper motor; 7. Second threaded rod; 8. Guide rod; 9. Second slider; 10. Top plate; 11. Distance sensor; 12. Electric telescopic rod; 13. Fixed rod; 14. Slide plate; 15. Electric push rod; 16. Clamping plate; 17. Fixed plate; 18. Slide groove; 19. Radar antenna; 20. Tunnel; 21. Working face. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Unless otherwise defined, 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1-4 This utility model provides a radar-assisted device for geological prediction at tunnel faces, comprising:

[0030] Guide rail 1 is horizontally installed on the ground of tunnel 20 by anchor bolts; scale lines 2 are provided on the front surface of guide rail 1; a first slider 5 is slidably fitted on guide rail 1, and the horizontal movement distance of the first slider 5 can be obtained by scale lines 2.

[0031] The first moving mechanism is used to drive the first slider 5 to slide along the guide rail 1;

[0032] The second moving mechanism is disposed on the first slider 5. The second moving mechanism includes a second slider 9. The second moving mechanism is used to drive the second slider 9 to move along the height direction of the tunnel 20.

[0033] Distance sensor 11 is located directly above the second slider 9 and is used to detect the moving height of the second slider 9;

[0034] A clamping mechanism is provided to fix the radar antenna 19, the emitting surface of which faces the palm face 21.

[0035] The third moving mechanism is disposed on the second slider 9. The third moving mechanism is used to drive the clamping mechanism to move closer to or away from the working face 21, so that the radar antenna 19 moves closer to or away from the working face 21. When the radar antenna 19 moves closer to the working face 21, it is convenient for the radar antenna 19 emitting surface to fit tightly with the working face 21. When the radar antenna 19 moves away from the working face 21, it is convenient for the radar antenna 19 to move to the next measurement point. Preferably, the distance between adjacent measurement points is set to 50cm.

[0036] Specifically, the first moving mechanism includes a first stepper motor 3, which is mounted on one end of the upper surface of the guide rail 1. The output end of the first stepper motor 3 is fixedly connected to a first threaded rod 4 via a coupling, and the first threaded rod 4 passes through the middle of the first slider 5 and is threadedly connected to it.

[0037] Specifically, the second moving mechanism includes a second stepper motor 6, the output end of which is fixedly connected to a second threaded rod 7. The middle part of the second threaded rod 7 passes through and is threadedly connected to the second slider 9. The second slider 9 is also slidably engaged with a guide rod 8, the bottom end of which is fixedly connected to the first slider 5. A top plate 10 is fixedly connected to the top end of the guide rod 8, and the top plate 10 is also rotatably connected to the end of the second threaded rod 7 away from the second stepper motor 6. A distance sensor 11 is installed on the top plate 10, which is used to detect the moving distance of the second slider 9 in the height direction. It should be noted that, since the moving height of the second slider 9 is relatively high, it is inconvenient for operators to determine the moving height of the second slider 9 by visually observing the scale lines; therefore, by setting the distance sensor 11, the error caused by operators relying on visually observing the scale lines to determine the moving height of the second slider 9 can be eliminated.

[0038] Preferably, the distance sensor 11 can be an ultrasonic distance sensor or an infrared distance sensor. The distance sensor 11 can be connected to the controller on the control panel via a 485 data cable. The controller displays the data monitored by the distance sensor 11 on the display screen on the control panel (not shown in the control panel diagram). The connection method between the controller on the control panel, the distance sensor 11, and the display screen is existing technology, and its specific process will not be described in detail here.

[0039] Specifically, the clamping mechanism includes a fixed plate 17, which is Z-shaped. A sliding plate 14 is mounted on the outer surface of the fixed plate 17, and an electric push rod 15 is mounted on the sliding plate 14. The output end of the electric push rod 15 is fixedly connected to a clamping plate 16. A sliding groove 18 is formed on the fixed plate 17, and the sliding groove 18 slides in cooperation with the middle of the clamping plate 16. The electric push rod 15 drives the clamping plate 16 to move up and down, facilitating the clamping plate 16 to clamp the radar antenna 19.

[0040] To facilitate the up-and-down movement of the clamping mechanism driven by the second slider 9, and consequently the radar antenna 19, a third moving mechanism can be an electrically operated telescopic rod 12. The electric telescopic rod 12 is mounted on the second slider 9, and its output end is fixedly connected to the side of the fixed plate 17. A fixed rod 13 is also mounted on the second slider 9, and it slides in a groove on the sliding plate 14. When the electric telescopic rod 12 moves the clamping mechanism back and forth, the cooperation between the sliding plate 14 and the fixed rod 13 provides guidance, making the overall movement of the clamping mechanism and the radar antenna 19 more stable.

[0041] The working principle of this utility model is as follows: In specific use, the guide rail 1 is horizontally installed on the ground of the tunnel 20 by anchor bolts, the first moving mechanism is installed on the guide rail 1, the second moving mechanism is installed on the first moving mechanism, the third moving mechanism is installed on the second moving mechanism, and the clamping mechanism is installed on the third moving mechanism. The radar antenna 19 is fixed to the clamping mechanism. Then, the first stepper motor 3 drives the first threaded rod 4 to rotate, causing the first slider 5 to move along the guide rail 1. The movement distance of the first slider 5 is determined by the scale line 2 on the guide rail 1. When the first slider 5 moves to the designated position, the radar antenna 19 is driven to fit against the tunnel face 21 by the electric telescopic rod 12. At this time, the radar antenna 19 can emit electromagnetic waves to detect the geological conditions of the tunnel face 21. Then, the electric telescopic rod 12 drives the radar antenna 19 to move away from the tunnel face 21. At this time, the first moving mechanism can continue to drive the radar antenna 19 to move along the guide rail 1 to detect the next detection point, thereby achieving horizontal detection of the tunnel face 21 at the same height. After acquiring multiple detection data from left to right or from right to left, the second moving mechanism can drive the radar antenna 19 to move in the height direction and repeat the operation at different heights, thereby acquiring the geological conditions of the tunnel face 21 of the entire tunnel 20.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0044] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A radar-assisted device for geological prediction at tunnel faces, characterized in that, include: Guide rail (1), which is horizontally installed on the ground of tunnel (20); scale lines (2) are provided on the guide rail (1); A first moving mechanism is used to drive a first slider (5) to slide along a guide rail (1); The second moving mechanism is disposed on the first slider (5). The second moving mechanism includes a second slider (9). The second moving mechanism is used to drive the second slider (9) to move along the height direction of the tunnel (20). A distance sensor (11) is located directly above the second slider (9) and is used to detect the moving height of the second slider (9). A clamping mechanism for fixing the radar antenna (19). The third moving mechanism is disposed on the second slider (9). The third moving mechanism is used to drive the clamping mechanism to move closer to or away from the working face (21) so that the radar antenna (19) moves closer to or away from the working face (21).

2. The radar-assisted device for geological prediction at tunnel faces according to claim 1, characterized in that: The first moving mechanism includes a first stepper motor (3), the output end of which is fixedly connected to a first threaded rod (4), the first threaded rod (4) passes through the middle of the first slider (5) and is threadedly connected to it.

3. A radar-assisted device for geological prediction at a tunnel face according to claim 1, characterized in that: The second moving mechanism includes a second stepper motor (6), the output end of which is fixedly connected to a second threaded rod (7). The middle part of the second threaded rod (7) passes through the second slider (9) and is threadedly connected to it. The second slider (9) is also slidably engaged with a guide rod (8), which is mounted on the first slider (5).

4. A radar-assisted device for geological prediction at a tunnel face according to claim 1, characterized in that: The clamping mechanism includes a fixed plate (17), an electric push rod (15) is provided on the outer surface of the fixed plate (17), and a clamping plate (16) is fixedly connected to the output end of the electric push rod (15). The clamping plate (16) is slidably connected to the fixed plate (17).

5. A radar-assisted device for geological prediction at a tunnel face according to claim 4, characterized in that: The fixing plate (17) is Z-shaped.

6. A radar-assisted device for geological prediction at a tunnel face according to claim 4, characterized in that: The outer surface of the fixing plate (17) is fitted with a sliding plate (14), and the sliding plate (14) is slidably fitted with a fixing rod (13), which is installed on the outer surface of the second slider (9).

7. A radar-assisted device for geological prediction at a tunnel face according to claim 4, characterized in that: The fixing plate (17) is provided with a sliding groove (18), which is slidably engaged with the clamping plate (16).

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