Tunnel concrete void and thickness visual detection device
By using telescopic rods and image collector detection devices in the tunnel, the problems of insufficient thickness and de-empty removal of the tunnel secondary lining structure are solved, and fast and accurate detection and positioning are achieved, reducing the risk of tunnel diseases and construction difficulty.
Patent Information
- Application Number
- CN202420931228.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During the pouring process, the secondary lining structure of the tunnel often has problems such as insufficient thickness and hollow or impurity between the lining and surrounding rock, which leads to frequent occurrence of de-empty diseases and affects the stability and safety of the tunnel structure.
A tunnel concrete de-emphasis and thickness visual detection device for tunnel concrete including telescopic rods, image collectors and searchlights was designed. By punching verification holes in the concrete, the telescopic rods are extended into and the concrete condition is recorded using the image collectors and video receivers. , accurately determine the position and thickness of the evacuated part.
It realizes rapid and accurate detection of the thickness and de-empty conditions of the initial and second-lined concrete of the tunnel, providing a basis for determining the position of the de-empty part, facilitates subsequent grouting treatment, and reduces the risk of tunnel diseases and construction difficulty.
Smart Images
Figure CN222259186U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to tunnel quality detection, in particular to a tunnel concrete void and thickness visualization detection device. Background Art
[0002] The geological conditions and structural forms of tunnels are very complex, and many disciplines are involved in the construction of tunnels, which makes the tunnel construction period long and the construction difficult. It is common for tunnel defects to be exposed during operation, such as lining cracks, lining voids, structural water leakage, etc. This not only shortens the life of the tunnel, but also poses a safety hazard to transportation.
[0003] The secondary lining structure of the tunnel is used as a support and safety reserve. Its pouring process is affected by geological factors, construction factors, etc., and often has defects such as insufficient thickness, cavities between the lining and the surrounding rock, and looseness. Among them, the voids behind the lining account for the largest proportion of various tunnel diseases. The voids in the secondary lining of the tunnel will cause uneven contact between the surrounding rock and the secondary lining concrete, resulting in local stress concentration in the secondary lining, changes in the stress state of the lining structure, deformation and damage, and eventually develop into the disease of cracking of the secondary lining; at the same time, due to the influence of groundwater in the tunnel, water bags are easily formed at the voids, and the large water bag pressure will also cause the secondary lining to crack, accompanied by water seepage, posing a huge safety hazard. Utility Model Content
[0004] The utility model aims to provide a tunnel concrete voiding and thickness visualization detection device, which can quickly detect the thickness and voiding of the primary support and secondary lining concrete of the tunnel.
[0005] To this end, the technical solution adopted by the utility model is: a tunnel concrete void and thickness visualization detection device, including a detection rod, the detection rod is a telescopic rod, the telescopic rod is provided with a scale, and the scale is complete when extended, the front end of the telescopic rod is provided with an image collector, the rear end of the telescopic rod is provided with a handle, the handle is provided with a controller for controlling the image collector to be turned on or off, the telescopic rod is hollow inside, and a signal transmission line connected to the image collector is provided inside the telescopic rod, and the signal transmission line passes through the telescopic rod and is connected to a video image receiver for reading the detection information of the image collector.
[0006] More preferably, after the telescopic rod is extended, the distance from the rear end to the front end of the image collector is 0.6-1 m.
[0007] More preferably, the front end of the image collector is scale 0. The front end of the image collector is scale 0, which can accurately determine the thickness of the tunnel concrete and the position of the hollow part, and facilitate the subsequent grouting of the hollow part.
[0008] More preferably, the image collector is surrounded by searchlights, and the searchlights are arranged to illuminate the verification hole, so that the image captured by the image collector is clearer.
[0009] More preferably, the controller is electrically connected to the searchlight, so that it is more convenient to control the searchlight to be turned on or off by the controller.
[0010] More preferably, the searchlight is a plurality of LED lights arranged around the image collector or an LED ring light. LED lights have high light efficiency, low power, can be lit quickly, and are more convenient to use.
[0011] The beneficial effects of the utility model are as follows: an image collector is arranged at the front end of the telescopic rod, and when detecting the thickness of the tunnel concrete and the voids, a verification hole is drilled in the concrete, the telescopic rod is extended into the verification hole, the concrete condition in the verification hole is recorded by the image collector, and a signal transmission line is arranged inside the telescopic rod, and the image of the image collector is transmitted to a video image receiver connected to the rear end of the signal transmission line. The staff determines the position and thickness of the void part in the tunnel through the condition in the video image receiver and the scale on the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 It is a schematic diagram of measuring the thickness of the primary support and the secondary lining in the utility model.
[0014] Figure 3 It is a schematic diagram of measuring the initial branch emptying in the utility model.
[0015] Figure 4 This is a schematic diagram of measuring the second lining degassing in the utility model.
[0016] Figure 5 It is a cross-sectional schematic diagram of the measurement state of the primary support and the secondary lining in the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] like Figure 1-5As shown, a visual detection device for tunnel concrete voiding and thickness includes a detection rod 1, which is a telescopic rod with a scale provided on it. After extension, the scale is complete. An image collector 2 is provided at the front end of the telescopic rod. After the telescopic rod is extended, the distance from the rear end to the front end of the image collector 2 is 0.6 to 1 m. The front end of the image collector 2 is scale 0. The front end of the image collector 2 is scale 0, which can accurately determine the thickness of the tunnel concrete and the position of the voided part, so as to facilitate the subsequent grouting of the voided part.
[0019] A handle is provided at the rear end of the telescopic rod, and a controller 4 for controlling the image collector 2 to be turned on or off is provided on the handle. A searchlight 3 is provided around the image collector 2. The searchlight 3 is provided to illuminate the verification hole 7, and the image illuminated by the image collector 2 is clearer. The controller 4 is electrically connected to the searchlight 3. It is more convenient to control the searchlight 3 to be turned on or off by the controller 4. The searchlight 3 is a plurality of LED lights arranged around the image collector 2 or an LED ring light. The LED light has high light efficiency and low power, and can be quickly lit, which is more convenient to use.
[0020] The interior of the telescopic rod is hollow, and a signal transmission line 5 connected to the image collector 2 is arranged inside the telescopic rod. After the signal transmission line 5 passes through the telescopic rod, it is connected to a video image receiver 6 for reading the detection information of the image collector 2.
[0021] An image collector 2 is arranged at the front end of the telescopic rod. When detecting the thickness of the tunnel concrete and the voids, a verification hole 7 is drilled in the concrete, and the telescopic rod is extended into the verification hole 7. The concrete condition in the verification hole 7 is recorded by the image collector 2, and a signal transmission line 5 is arranged inside the telescopic rod. The image of the image collector 2 is transmitted to a video image receiver 6 connected to the rear end of the signal transmission line 5. The staff determines the position and thickness of the void part in the tunnel through the condition in the video image receiver 6 and the scale on the telescopic rod.
[0022] As shown in combination with 2-5, when detecting the thickness and voids of the primary support 8 and the secondary lining 9 of the tunnel, a verification hole 7 is first drilled on the primary support 8 or the secondary lining 9. The verification hole 7 penetrates the primary support 8 or the secondary lining 9. The staff holds the detection device and extends the image collector 2 at the front end of the detection device into the verification hole 7, and turns on the searchlight 3. The searchlight 3 illuminates the verification hole 7. The image collector 2 transmits the concrete condition in the verification hole 7 to the video image receiver 6 through the signal transmission line 5. The voids of the concrete in the primary support 8 or the secondary lining 9 of the tunnel can be directly observed. When voids occur, the position and size of the void part can be directly known based on the scale on the detection rod 1 and the video image sent back by the image collector 2.
[0023] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A tunnel concrete void and thickness visualization detection device, comprising a detection rod (1), characterized in that: The detection rod (1) is a telescopic rod, and a scale is arranged on the telescopic rod, and the scale is complete when extended. The front end of the telescopic rod is provided with an image collector (2), and the rear end of the telescopic rod is provided with a handle, and the handle is provided with a controller (4) for controlling the image collector (2) to be turned on or off. The telescopic rod is hollow inside, and a signal transmission line (5) connected to the image collector (2) is arranged inside the telescopic rod. After the signal transmission line (5) passes through the telescopic rod, it is connected to a video image receiver (6) for reading the detection information of the image collector (2).
2. A tunnel concrete void and thickness visualization detection device according to claim 1, characterized in that: After the telescopic rod is extended, the distance from the rear end to the front end of the image collector (2) is 0.6 to 1 m.
3. A tunnel concrete void and thickness visualization detection device according to claim 2, characterized in that: The front end of the image collector (2) is scale 0.
4. The tunnel concrete void and thickness visualization detection device according to claim 1, characterized in that: The image collector (2) is surrounded by searchlights (3).
5. A tunnel concrete void and thickness visualization detection device according to claim 4, characterized in that: The controller (4) is electrically connected to the searchlight (3).
6. The tunnel concrete void and thickness visualization detection device according to claim 4, characterized in that: The searchlight (3) is a plurality of LED lights arranged around the image collector (2) or is an LED ring light.