A tunnel lining ground penetrating radar detection system

Abstract

The utility model discloses a tunnel lining geological radar detection system, including slide rail, self -propelled trolley and detection frame, the length direction of setting along tunnel lining, self -propelled trolley installs on the slide rail, and detection frame installs on the trolley, and detection frame is arc and its surface is pasted on the inner edge surface of tunnel lining, and the surface that detection frame is pasted with tunnel lining inner edge is provided with radar transmitting antenna and radar receiving antenna. The utility model discloses a tunnel lining geological radar detection system, sets up the track of high -strength non -metallic material made at the survey line position of tunnel surface to be detected, installs geological radar on the slide rail through the detection support in the field detection process, makes the transmitting antenna and receiving antenna of geological radar to be close to tunnel surface to be detected, and uses motor equipment to drag geological radar, makes it can along survey line even -speed advance, can greatly improve the accuracy and continuity of geological radar collection data.

Description

Technical Field

[0001] This utility model relates to the field of geological detection technology for tunnel lining, and more specifically, to a geological radar detection system for tunnel lining. Background Technology

[0002] In railway construction engineering, ground-penetrating radar (GPR) is widely used for non-destructive testing of railway tunnel engineering quality. GPR is an electromagnetic technology that uses radio waves to detect the distribution of underground media and scan invisible targets or underground interfaces to determine their internal structure or location. Its working principle is as follows: high-frequency electromagnetic waves are emitted in broadband pulse form through a transmitting antenna, reflected or transmitted through the target, and received by a receiving antenna. As the high-frequency electromagnetic waves propagate through the medium, their path, electromagnetic field strength, and waveform change with the electrical properties and aggregate structure of the medium. Therefore, by acquiring, processing, and analyzing the time-domain waveform, the spatial location or structural state of the underground interface or target can be determined. GPR features high resolution, non-destructive testing, high efficiency, and strong anti-interference capabilities.

[0003] During on-site inspections, to ensure the accuracy and continuity of the collected data, the transmitting and receiving antennas of the ground-penetrating radar (GPR) need to be closely attached to the surface of the tunnel to be inspected. Workers must then hold the equipment and move it at a constant speed along the sideline of the surface. In some areas of the tunnel, the curvature is relatively small, and the GPR itself is quite heavy. Manually pushing the GPR along the sideline can easily introduce human error, all of which affect the accuracy and continuity of the GPR data collected.

[0004] In order to reduce the impact of human error on the accuracy and continuity of data collection during the advance of the ground-penetrating radar along the survey line, there is an urgent need to invent a ground-penetrating radar detection system for tunnel lining. Utility Model Content

[0005] This invention provides a ground-penetrating radar detection system for tunnel lining to solve the problem of inaccurate data acquisition caused by the inconvenience of monitoring the surface quality of existing tunnel linings.

[0006] According to one aspect of the present invention, a tunnel lining ground-penetrating radar detection system is provided, comprising a slide rail, a self-propelled trolley, and a detection frame. The slide rail is arranged along the length direction of the tunnel lining, the self-propelled trolley is mounted on the slide rail, the detection frame is mounted on the trolley, and the detection frame is arc-shaped with its surface in contact with the inner edge surface of the tunnel lining. A radar transmitting antenna and a radar receiving antenna are provided on the surface of the detection frame in contact with the inner edge surface of the tunnel lining.

[0007] Based on the above scheme, the preferred option is that the slide rail is a high-strength non-metallic track.

[0008] Based on the above scheme, a preferred embodiment is provided where an AB adhesive layer is provided between the slide rail and the tunnel lining.

[0009] In a preferred embodiment based on the above scheme, the slide rail also includes mounting bases, which are located at both ends of the tunnel, and both ends of the slide rail are inserted into the mounting bases.

[0010] Based on the above scheme, preferably, the mounting base includes a base and a mounting bracket. The base is bolted to the end face of the tunnel lining. The base has a connecting wing in the middle. The mounting bracket has a mating groove in the middle that is adapted to the slide rail. The mounting bracket has protrusions extending upward from the top of both sides of the mounting bracket to engage with the wing.

[0011] Based on the above scheme, a preferred embodiment is provided with an anti-slip pad on the inner edge surface of the connecting groove.

[0012] Based on the above scheme, a preferred embodiment is provided on the trolley, which is equipped with a mounting plate that engages with the slide rail, and the mounting plate is equipped with rollers.

[0013] Based on the above scheme, preferably, the detection frame is arc-shaped or concave-shaped, and the radar transmitting antenna and radar receiving antenna are respectively installed at the free end of the detection frame and press against the tunnel lining.

[0014] This utility model discloses a tunnel lining ground-penetrating radar detection system. A track made of high-strength non-metallic material is set at the measurement line position on the surface of the tunnel to be inspected. During the on-site inspection, the ground-penetrating radar is installed on the slide rail through a detection frame, so that the transmitting and receiving antennas of the ground-penetrating radar are closely attached to the surface of the tunnel to be inspected. The ground-penetrating radar is pulled by a motor, so that it can move forward at a constant speed along the measurement line. It can quickly obtain the surface quality of the tunnel lining along the measurement line direction. It is convenient and fast to use, can perform continuous and uniform measurements, and has higher measurement accuracy.

[0015] Compared with existing technologies, the tunnel lining ground-penetrating radar detection system of this utility model can greatly improve the accuracy and continuity of ground-penetrating radar data acquisition. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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. In the drawings: Figure 1 This is a front view schematic diagram of the tunnel lining geological radar detection system of this utility model; Figure 2 This is an enlarged view of the installation of the tunnel lining geological radar detection system of this utility model; Figure 3 This is a schematic diagram of the mounting base of this utility model; Figure 4 This is a side view of the base of this utility model; Figure 5 This is a schematic diagram of the overall tunnel lining geological radar detection system of this utility model; Figure 6 This is a three-dimensional schematic diagram of the tunnel lining geological radar detection system of this utility model; Explanation of icon numbers: 10. Slide rail; 20. Self-propelled trolley; 21. Mounting plate; 22. Roller; 30. Detector frame; 41. Radar transmitting antenna; 42. Radar receiving antenna; 50. AB adhesive layer; 60. Mounting base; 61. Base; 62. Connecting clip wing; 63. Clip seat; 64. Connecting groove; 65. Clip protrusion. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0019] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0020] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] Please see Figure 1 and combined Figure 5 and Figure 6 As shown, the present invention provides a tunnel lining ground-penetrating radar detection system, which includes a slide rail 10, a self-propelled trolley 20, and a detection frame 30. The slide rail 10 is arranged along the length of the tunnel lining. In practice, the number of tracks can be set to one or more based on the actual situation, depending on the range of the detection frame 30.

[0025] In this invention, the trolley is mounted on the slide rail 10, the detector frame 30 is mounted on the trolley, and the detector frame 30 is arc-shaped with its surface attached to the inner edge of the tunnel lining. The surface of the detector frame 30 that is attached to the inner edge of the tunnel lining is provided with a radar transmitting antenna 41 and a radar receiving antenna 42. The trolley is driven by a motor to move on the slide rail 10.

[0026] Before on-site inspection, the self-propelled trolley 20 is installed on the slide rail 10 so that the ground-penetrating radar transmitting antenna 41 and receiving antenna on the detection frame 30 are in close contact with the surface of the tunnel to be inspected.

[0027] The motor equipment controlling the drive trolley pulls the radar transmitting antenna 41 and radar receiving antenna 42 on the detection device, enabling it to move at a constant speed along the survey line. The radar transmitting antenna 41 and radar receiving antenna 42 automatically collect detection data and position information as they move at a constant speed along the survey line on the surface to be inspected in the tunnel.

[0028] After the on-site inspection is completed, the detection data and location information collected by the radar transmitting antenna 41 and the radar receiving antenna 42 are analyzed to determine the spatial location or structural state of the underground interface or target body, and to determine the engineering quality and location of defects in the railway tunnel lining.

[0029] It is worth noting that the slide rail 10 of this utility model adopts a non-metallic, non-magnetic track, which can ensure that the slide rail 10 itself does not affect the ground-penetrating radar. The design strength of the slide rail 10 should meet the requirements for stable operation of the ground-penetrating radar on it, and the design space between its track and the tunnel surface to be inspected should ensure that the transmitting and receiving antennas of the ground-penetrating radar are in close contact with the tunnel surface to be inspected.

[0030] Furthermore, an AB adhesive layer 50 is provided between the slide rail 10 and the tunnel lining of this utility model to improve the installation strength of the slide rail 10.

[0031] It is worth noting that the present invention also includes a mounting base 60, which is set at both ends of the tunnel. Both ends of the slide rail 10 are inserted into the mounting base 60. The design of the mounting base 60 can provide installation support for the installation of the slide rail 10 and improve the stability of the installation of the slide rail 10.

[0032] Specifically, the mounting base 60 of this utility model includes a base 61 and a mounting bracket 63. The base 61 is bolted to the end face of the tunnel lining. A connecting wing 62 is provided in the middle of the base 61. A mating groove 64 adapted to the slide rail 10 is provided in the middle of the mounting bracket 63. Protrusions 65 that engage with the wing extend upwards from the top of both sides of the mounting base 60. (See the structural details below.) Figure 3 and Figure 4 As shown.

[0033] During installation, the AB adhesive layer 50 is attached to the upper surface of the slide rail 10 and pre-fixed to the tunnel lining. One end of the adhesive layer 50 is inserted into the mating groove 64 of one of the mounting seats 60. Then, the other end is inserted into the mating groove 64 of the other mounting seat 60. The other end is connected to the base 61 by the locking protrusion 65 and the locking wing, making the installation and disassembly more convenient and quick.

[0034] Furthermore, the inner edge of the mating groove 64 of this utility model is provided with an anti-slip pad, and the utility model is provided with an mounting plate 21 on the trolley that engages with the slide rail 10, and rollers 22 are mounted on the mounting plate 21.

[0035] The detection frame 30 of this utility model is arc-shaped or U-shaped. The radar transmitting antenna 41 and the radar receiving antenna 42 are respectively installed at the free ends of the detection frame and press against the tunnel lining. For details, please refer to [reference needed]. Figure 2 As shown.

[0036] This utility model discloses a tunnel lining ground-penetrating radar detection system. A track made of high-strength non-metallic material is set at the measurement line position on the surface of the tunnel to be inspected. During the on-site inspection, the ground-penetrating radar is installed on the slide rail 10 through the detection frame, so that the transmitting antenna and receiving antenna of the ground-penetrating radar are closely attached to the surface of the tunnel to be inspected. The ground-penetrating radar is pulled by a motor device so that it can move forward at a constant speed along the measurement line.

[0037] Compared with existing technologies, the tunnel lining ground-penetrating radar detection system of this utility model can greatly improve the accuracy and continuity of ground-penetrating radar data acquisition.

[0038] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tunnel lining ground penetrating radar detection system, characterized in that, The system includes a slide rail, a self-propelled trolley, and a detection frame. The slide rail is arranged along the length of the tunnel lining, the self-propelled trolley is mounted on the slide rail, and the detection frame is mounted on the trolley. The detection frame is arc-shaped and its surface is attached to the inner edge of the tunnel lining. A radar transmitting antenna and a radar receiving antenna are provided on the surface of the detection frame that is attached to the inner edge of the tunnel lining.

2. A tunnel lining ground penetrating radar detection system as claimed in claim 1, wherein, The slide rail is a high-strength non-metallic track.

3. A tunnel lining ground penetrating radar detection system as claimed in claim 1, wherein, An AB adhesive layer is provided between the slide rail and the tunnel lining.

4. A tunnel lining ground penetrating radar detection system as claimed in claim 1, wherein, It also includes mounting bases, which are located at both ends of the tunnel, and the two ends of the slide rail are inserted into the mounting bases.

5. A tunnel lining ground penetrating radar detection system as claimed in claim 4 wherein, The mounting base includes a base and a mounting bracket. The base is bolted to the end face of the tunnel lining. A connecting wing is provided in the middle of the base. A mating groove adapted to the slide rail is provided in the middle of the mounting bracket. Protrusions that engage with the wing extend upward from the top of both sides of the mounting bracket.

6. A tunnel lining ground penetrating radar detection system as claimed in claim 5 wherein, The inner edge of the joint groove is provided with an anti-slip pad.

7. A tunnel lining ground penetrating radar detection system as claimed in claim 1, wherein, The trolley is equipped with a mounting plate that engages with the slide rail, and the mounting plate is fitted with rollers.

8. A tunnel lining ground penetrating radar detection system as claimed in claim 7, wherein, The detection frame is arc-shaped or U-shaped, and the radar transmitting antenna and radar receiving antenna are respectively installed at the free end of the detection frame and press against the tunnel lining.

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