Visual construction method for second lining of tunnel

Abstract

The invention provides a tunnel secondary lining visual construction method, and belongs to the technical field of tunnel lining construction. A visualization device is adopted to conduct visualization detection in the tunnel second lining construction process, the visualization device comprises a probe, a display device and a connecting line used for connecting the probe and the display device, and image processing software used for processing pictures and images is arranged in the display device. Comprising the following steps: installing a visualization device; performing visual construction on the tunnel secondary lining; pouring of a tunnel second lining is started, and the three probes conduct simultaneous observation from bottom to top according to the distribution mode of the three probes and the left side and the right side of the concrete pouring reaching height; the display carries out real-time recording and timing according to pictures returned by the probe in real time so as to gradually record the concrete pouring condition and plumpness; establishing an observation analysis database used as a later secondary lining concrete construction standard; and obtaining an observation analysis database according to an observation analysis result, and using the observation analysis database as a subsequent secondary lining concrete construction standard database.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel lining construction and relates to a visualization construction method for a tunnel secondary lining. Background Art

[0002] The problem of hollowing out of the second lining cast arch has always been to be improved, and we have always attached great importance to improving the technology to prevent the hollowing out of the second lining arch.

[0003] However, the current traditional secondary lining pouring method, which relies solely on workers' experience to judge whether the secondary lining vault is full during the pouring process, has too many shortcomings;

[0004] Alternatively, the radar detection method after the second lining is formed can be used for judgment. However, the radar detection method after the second lining is formed is relatively too late, and the cost of the tunnel vault de-airing alarm system is too high. Summary of the invention

[0005] The present invention provides a method for visual construction of a tunnel secondary lining, which uses a visualization device to perform visual detection during the construction of the tunnel secondary lining. The visualization device includes a probe, a display device, and a connecting line for connecting the probe and the display device. The display device is equipped with image processing software for processing screen images.

[0006] The tunnel secondary lining visualization construction method comprises the following steps:

[0007] Step 1: Install the visualization device;

[0008] A probe is installed on the arch top and the waists on both sides of the tunnel secondary lining, and the connecting wires of the three probes are laid along the outside of the trolley and connected to the display device set outside the tunnel wall;

[0009] Test the probe through the real-time display of the display device, and continuously adjust the camera lighting and focus of the probe;

[0010] Complete the installation of the visualization device;

[0011] Step 2: Visualize the construction of the tunnel secondary lining;

[0012] The pouring of the tunnel secondary lining was started, and the three probes were distributed from bottom to top to conduct simultaneous observation on the left and right sides according to the height reached by the concrete pouring;

[0013] The display records and times the images sent back by the probe in real time, so as to gradually record the concrete pouring situation and fullness;

[0014] Step 3: Establish an observation and analysis database to be used as the construction standard for the secondary lining concrete in the future;

[0015] Establish a picture database based on the pictures sent back by the probe;

[0016] Compare multiple images in the image database multiple times, focusing on observing and analyzing the voids in the arch of the secondary lining concrete pouring;

[0017] Based on the observation and analysis results, an observation and analysis database is obtained to be used as a standard database for secondary lining concrete construction in the future.

[0018] Optionally, during the visual construction of the tunnel secondary lining, it is also necessary to determine whether the construction of the secondary lining concrete meets the requirements. The specific determination method is as follows:

[0019] When the secondary lining concrete reaches the highest point of the vault, the pouring is suspended and waits for 5 minutes. The three probes are controlled by the display to check the corresponding surrounding conditions respectively.

[0020] When any of the three probes finds a cavity in the secondary lining concrete, the operator immediately reminds the pouring workers to continue pouring; at the same time, the three probes conduct synchronous observation during the pouring process;

[0021] Until the three probes detect no cavities in the secondary lining concrete, the images sent back by the three probes are saved respectively, and the connection between the probe and the display is disconnected, and the connecting wires exposed outside the secondary lining of the tunnel are cut off, and the pouring of the secondary lining concrete is completed.

[0022] Optionally, a plastic cap is provided on the connecting line for disconnecting the probe from the display device.

[0023] Optionally, the probe is configured as an industrial endoscopy probe, which includes a probe body and an OV photosensitive chip, a 5-megapixel high-definition pixel dual camera and a miniature 2.42.4GHz WiFi transmitter arranged in the body, and a plurality of adjustable high-intensity lighting lamps and reflective light sheets are provided on the outer ring of the probe body.

[0024] Optionally, the connecting wire uses IP67-grade waterproof glue to protect the internal pure copper superconducting wire core, the outer skin is packaged with PVC material, and is equipped with a WIFI transmitter.

[0025] Optionally, a TYPE-C interface and an adapter are further provided on the connecting cable, and the adapter is configured as a TYPE-C to Micro adapter and / or a TYPE-C to Lightning adapter.

[0026] Optionally, the display device is configured as one or more of a mobile phone, a tablet and / or a notebook.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention uses visualization equipment to observe the secondary lining pouring process in real time on the basis of the original secondary lining pouring construction process, so as to track and measure the concrete pouring progress and the concrete fullness of the pouring part in real time, and guide the pouring construction on site to ensure that the secondary lining is full and has no voids.

[0029] (2) The present invention records the picture in real time by setting up software for processing the picture in the display device, which is beneficial to controlling the fullness of the second lining concrete pouring during construction, retaining relevant images, and re-analyzing after the pouring is completed, which serves as reference data for the subsequent second lining concrete construction.

[0030] (3) In the present invention, the visualization device is equipped with an industrial endoscope probe and a display device, and the special industrial endoscope probe is used to observe in real time whether the concrete is full during the pouring of the secondary lining. This makes the device low-cost and the industrial endoscope probe can be left in the secondary lining concrete after the observation is completed.

[0031] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 Schematic diagram of the installation of the visualization device in the embodiment of the present invention.

[0034] in:

[0035] 1. First probe, 2. Second probe, 3. Second lining of tunnel. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present invention more clear and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings of the present invention are all simplified and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the implementation of the present invention; the "number" mentioned in the present invention is not limited to the specific number in the examples in the accompanying drawings; the directions or positional relationships indicated by "front", "middle", "back", "left", "right", "up", "down", "top", "bottom", "middle", etc. mentioned in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor can they be understood as limitations on the present invention.

[0037] Example:

[0038] A tunnel secondary lining visualization construction method provided by the present invention comprises the following steps:

[0039] Step 1: A first probe 1 is installed at the arch top in the second lining 3 of the tunnel, and a second probe 2 is installed at the arch waists on both sides of the second lining 3 of the tunnel. The first probe 1 is connected to the display device through a first connecting line, and the single second probe 2 is connected to the display device through a single second connecting line.

[0040] Preferably, the first connecting line and the second connecting line are respectively laid along the outside of the trolley and are both connected to a display device arranged outside the tunnel wall (specifically, the display device can be arranged on the trolley according to actual needs).

[0041] Preferably, plastic caps are provided on the first connecting wire and the second connecting wire, and the first connecting wire and the second connecting wire are disconnected from each other by installing the plastic caps, or the second probe 2 and the display device; or, the first connecting wire and the second connecting wire are connected to each other by removing the plastic caps.

[0042] Step 2: Before installing the template, remove the plastic cap protecting the joint to connect the probe to the display device; test the probe through the real-time display of the display device, and continuously adjust the camera light and focal length of the probe to put the probe at the best observation angle.

[0043] Step three, the second lining begins to be poured, and the display records and times in real time based on the images sent back by the probe. Specifically, the probe detects the second lining pouring process in the following way: from bottom to top, observations are made simultaneously on both sides according to the height reached by the concrete pouring, and the concrete pouring situation and fullness are gradually recorded.

[0044] Step 4: When the secondary lining concrete reaches the highest point of the vault, the pouring is suspended and wait for 5 minutes. The three probes are controlled by the display to check the corresponding surrounding conditions respectively;

[0045] When any of the three probes finds a cavity in the secondary lining concrete, the operator immediately reminds the pouring workers to continue pouring; at the same time, the three probes conduct synchronous observation during the pouring process;

[0046] Until the three probes detect no cavities in the secondary lining concrete, the images sent back by the three probes are saved respectively, and the connection between the probe and the display is disconnected, and the connecting wires exposed outside the secondary lining of the tunnel are cut off, and the pouring of the secondary lining concrete is completed.

[0047] Step 5: Establish an observation and analysis database to be used as the construction standard for the secondary lining concrete in the future;

[0048] Establish a picture database based on the pictures sent back by the probe;

[0049] Compare multiple images in the image database multiple times (the specific comparison process is as follows: compare the previous second lining vault emptying pouring video with the vault not emptying video, determine the cause of the second lining vault emptying this time, and provide a basis for avoiding the second lining vault emptying in the future), focusing on the observation and analysis of the second lining concrete pouring vault emptying;

[0050] According to the observation and analysis results, an observation and analysis database is obtained to be used as a standard database for the subsequent secondary lining concrete construction, so as to reduce the situation of the vault being emptied in the subsequent secondary lining concrete construction and ensure the integrity and stability of the supporting structure.

[0051] Preferably, the probe is preferably configured as a special industrial endoscope probe, with an ov photosensitive chip inside the lens, a 5-megapixel high-definition dual-camera lens and a miniature 2.4GHz WiFi transmitter. The outer ring of the lens is equipped with 6 adjustable strong light lamps and reflective light sheets, so that the surrounding structures can be clearly seen even in dark conditions. The connecting wire (i.e., the lens wire) uses IP67-grade waterproof glue to protect the internal pure copper superconducting wire core, and the outer skin is encapsulated with PVC material, which is waterproof and heat-resistant, and cooperates with the WIFI transmitter to provide double protection for signal and image quality transmission. The interface comes with a TYPE-C interface, which is matched with (TYPE-C to Micro, TYPE-C to Lightning) adapters, and is compatible with a variety of hardware devices.

[0052] Preferably, the display device is configured as one or more mobile devices such as a mobile phone, a tablet or / and a notebook; the display device is connected to the industrial endoscope probe through a connecting line to achieve plug-and-play, ensuring that workers and technicians can plug and play during the visualization pouring process of the tunnel secondary lining, breaking through the limitation that only customized equipment can be used for viewing, and having strong versatility.

[0053] Further preferably, the display device has its own software for processing screen images, and the software supports Android, IOS, and HarmonyOS systems. When entering the software page, black and white / color mode can be switched according to different conditions, the image can be focused and rotated, and the high image contrast technology can freely zoom in and out for viewing of key areas.

[0054] The tunnel secondary lining visualization construction method provided by the present invention uses multiple probes to observe the secondary lining pouring throughout the entire process. The probes at each point respectively record the arch waist and the arch top through video, so the integrity is strong. The 360° viewing angle of the probe and the focal length of the A2-10 lens make the visual range wider and broader, thereby reducing the probability of the arch top being empty to a greater extent.

[0055] In the actual construction of the tunnel secondary lining, a special industrial endoscope probe is first used to install and arrange the arch waist and arch top, and then a display device is used to gradually observe the real-time changes of the secondary lining concrete during the pouring process. In areas where cavities are found, the probe is controlled by the internal software of the display to rotate and observe the surrounding conditions to determine its position and range.

[0056] After determining the location and size of the cavity, the second lining trolley is manually vibrated. Carefully observe the flow direction and coagulation of the second lining concrete mixed with different mix ratios, and to a certain extent, judge the quality of the second lining casting under different conditions in real time. Finally, retain the relevant images and establish an image database to provide data analysis for the reasons for the subsequent second lining concrete pouring vault degassing, so as to reduce the vault degassing rate.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel secondary lining visualization construction method, characterized in that: A visualization device is used to perform visualization detection during the construction of the tunnel secondary lining, wherein the visualization device includes a probe, a display device, and a connection line for connecting the probe and the display device, and the display device is equipped with image processing software for processing the screen image; The tunnel secondary lining visualization construction method comprises the following steps: Step 1: Install the visualization device; A probe is installed at the arch top and the waists on both sides of the tunnel secondary lining, and the connecting wires of the three probes are laid along the outside of the trolley and connected to the display device arranged outside the tunnel wall; Test the probe through the real-time display of the display device, and continuously adjust the camera lighting and focus of the probe; Complete the installation of the visualization device; Step 2: Visualize the construction of the tunnel secondary lining; The pouring of the tunnel secondary lining was started, and the three probes were distributed from bottom to top to conduct simultaneous observations on the left and right sides according to the height reached by the concrete pouring; The display records and times the images sent back by the probe in real time, so as to gradually record the concrete pouring situation and fullness; Step 3: Establish an observation and analysis database to be used as the construction standard for the secondary lining concrete in the future; Establish a picture database based on the pictures sent back by the probe; Compare multiple images in the image database multiple times, focusing on observing and analyzing the voids in the arch of the secondary lining concrete pouring; Based on the observation and analysis results, an observation and analysis database is obtained to be used as a standard database for secondary lining concrete construction in the future.

2. The method for visualizing the construction of the secondary lining of a tunnel according to claim 1 is characterized in that: During the visualization construction of the tunnel secondary lining, it is also necessary to judge whether the construction of the secondary lining concrete meets the requirements. The specific judgment method is as follows: When the secondary lining concrete reaches the highest point of the vault, the pouring is suspended and waits for 5 minutes. The three probes are controlled by the display to check the corresponding surrounding conditions respectively. When any of the three probes finds a cavity in the secondary lining concrete, the operator immediately reminds the pouring workers to continue pouring; at the same time, the three probes conduct synchronous observation during the pouring process; Until the three probes detect no cavities in the secondary lining concrete, the images sent back by the three probes are saved respectively, and the connection between the probe and the display is disconnected, and the connecting wires exposed outside the secondary lining of the tunnel are cut off, and the pouring of the secondary lining concrete is completed.

3. The visualization construction method for the secondary lining of a tunnel according to claim 2 is characterized in that: A plastic cap head is also provided on the connecting line for disconnecting the connection between the probe and the display device.

4. The method for visualizing the construction of the secondary lining of a tunnel according to claim 1 is characterized in that: The probe is configured as an industrial endoscope probe, which includes a probe body and an ov photosensitive chip, a 5-megapixel high-definition pixel dual camera, and a miniature 2.42.4GHz WiFi transmitter arranged in the body, and a plurality of adjustable high-intensity lighting lamps and reflective light sheets are provided on the outer ring of the probe body.

5. The method for visualizing the construction of the secondary lining of a tunnel according to claim 4 is characterized in that: The connecting wire uses IP67 grade waterproof glue to protect the internal pure copper superconducting wire core, the outer skin is packaged with PVC material, and a WIFI transmitter is provided.

6. The method for visualizing the construction of the secondary lining of a tunnel according to claim 5 is characterized in that: The connecting line is also provided with a TYPE-C interface and an adapter, and the adapter is configured as a TYPE-C to Micro adapter and / or a TYPE-C to Lightning adapter.

7. The method for visualizing the construction of the secondary lining of a tunnel according to any one of claims 1 to 6, characterized in that: The display device is configured as one or more of a mobile phone, a tablet and / or a notebook.

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