A tunnel segment grouting kit and construction method thereof

Abstract

The present invention provides a tunnel segment grouting kit and a construction method thereof, which realizes the standardization and automation of the construction process by integrating technologies such as infrared cameras, high-definition cameras, HUD projectors, and data processing modules. The system can monitor the crack position and grouting temperature in real time, automatically record the construction data and upload it to the background server, and generate targeted repair plans. This not only improves the construction efficiency and quality control level, but also reduces the subjective errors of manual operation, enhances the safety and reliability of construction, and solves the problem that the process operation and recording of crack grouting during the maintenance of subway tunnel segments are too dependent on manual observation and are easily affected by subjective factors.

Description

Technical Field

[0001] The invention relates to the field of tunnel maintenance, and in particular to a tunnel segment grouting kit and a construction method thereof. Background Art

[0002] In tunnel engineering, segment maintenance and grouting are important links to ensure the safety of tunnel structures and extend their service life. The traditional tunnel segment grouting construction method mainly relies on manual operation, which has many shortcomings, such as low construction efficiency, lax quality control, and many safety hazards. Especially in complex underground environments, construction workers need to frequently enter and exit tunnels and manually record construction data, which not only increases the workload, but also may lead to inaccurate or missing data records.

[0003] Although the existing grouting equipment and technology have improved the construction efficiency to a certain extent, they still lack standardized and systematic solutions. Traditional grouting guns usually do not have temperature monitoring and metering functions, and cannot monitor the key parameters of the grouting process in real time, making it difficult to ensure the quality of grouting. In addition, the identification and recording of crack locations during construction also rely on manual observation, which is easily affected by subjective factors and causes misjudgment. Summary of the invention

[0004] The main purpose of the present invention is to provide a tunnel segment grouting kit and a construction method thereof, which solves the problem that the process operation and recording of crack grouting during the maintenance of subway tunnel segments are too dependent on manual observation and are easily affected by subjective factors.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a tunnel segment grouting set, including an intelligent safety helmet, a portable power supply, and a grouting device; The intelligent safety helmet is electrically connected to the portable power source, a grouting gun is provided on one side of the grouting device, and a pipeline is connected between the grouting device and the grouting gun; The intelligent safety helmet comprises a top cover, two sides of which are provided with rotating shaft brackets, a rotatable transparent mask is arranged on the rotating shaft brackets, one side of the top cover is also provided with a back side part, a side of the back side part facing the transparent mask is provided with a plurality of side jaws, and a hat strap is arranged between the side jaws.

[0006] In the preferred embodiment, heat dissipation holes are provided on both sides of the back side, a micro fan is provided on the outer side of the back side, air ducts are provided on both sides of the micro fan, the air ducts are connected to the heat dissipation holes, and the micro fan is used to cool the inside of the helmet.

[0007] In the preferred embodiment, an infrared camera and a high-definition camera are provided on the side of the side jaw facing the transparent mask; The side jaws are symmetrically arranged on both sides of the transparent mask, one side is equipped with an infrared camera, and the other side is equipped with a high-definition camera and a lighting lamp. The infrared camera is used to detect the surface temperature of the pipe segment, the high-definition camera is used to take photos of the pipe segment, and the lighting lamp is used for fill light.

[0008] There are projection support plates on both sides of the lower side of the side jaw, and a HUD projector is provided on the projection support plate. The HUD projector is used to project real-time information on the transparent mask. In the preferred embodiment, an RFID tag is further provided inside the top cover, and a pocket net is further provided below the RFID tag, the pocket net is used to fit the wearer's head, and the RFID tag is used for identity recognition by other devices; A first interface is also provided below the back side portion, and the first interface is used for electrically connecting to a portable power source.

[0009] In the preferred embodiment, the portable power supply includes a belt bracket, breathable belts are provided on both sides of the belt bracket, tightening buckles are provided between the breathable belts, a solid-state battery is provided on one side of the belt bracket, a cooling fan is provided on the back of the solid-state battery, the cooling fan is used to dissipate heat from the solid-state battery, a transformer mainboard and a wireless transmission module are provided above the solid-state battery, and the wireless transmission module uploads the construction parameters of the construction workers to the background server through the network.

[0010] In the preferred embodiment, the grouting device includes a frame, a stirring bucket is provided above the frame, an air pump is provided above the stirring bucket, the stirring bucket is used to prepare the grouting material, and the air pump is used to pressurize the grouting material into the grouting gun; The grouting gun comprises a butt, a gun barrel is arranged on one side of the butt, a feeding valve is arranged between the gun barrel and the butt, a pull rod is arranged on one side of the feeding valve, a sliding seat is arranged between the pull rod and the butt, the pull rod and the sliding seat are slidably connected, a material limiting knob is arranged at one end of the pull rod, and a valve core is arranged at the other end, and the valve core is slidably connected to the feeding valve; The material limiting knob is threadedly connected to the pull rod, and the material limiting knob is used to control the movement stroke of the valve core.

[0011] In the preferred embodiment, a feeding hole is provided above the feeding valve, the feeding hole is connected to the inside of the feeding valve, and the feeding hole is used to connect to the grouting device; A sealing joint is also provided around the feeding hole.

[0012] In the preferred embodiment, a grouting switch is provided below the pull rod, and the grouting switch controls the opening and closing of the valve core by swinging and pulling the pull rod; A swingable limit plate is also provided below the grouting switch, the limit plate is hinged to the buttstock, and a coil spring is provided between the limit plate and the buttstock; The outer circle of the gun barrel is wrapped with a gun barrel sleeve, and a filler is arranged between the gun barrel sleeve and the gun barrel, and the filler is used to reduce the temperature loss rate of the slurry inside the gun barrel; The front end of the barrel is also provided with a retractable measuring tube, which is slidably connected to the barrel sleeve and is used to measure the depth of the muzzle into the tube segment; A data processing module is also provided in the buttstock, and a second interface is provided below the data processing module, and the second interface is used for electrically connecting to a portable power source. A construction method using the above tunnel segment grouting set comprises: S1. Segment maintenance personnel wear smart helmets and portable power supplies and enter the subway tunnel together with grouting equipment and materials; S2. When passing through the tunnel maintenance door, the RFID tag connects with the sensing device, which automatically identifies the identity of the maintenance personnel and records the entry time; S3. After the maintenance personnel arrive at the construction site, they start the portable power supply 2, and start the high-definition camera and lighting to take samples and photos of the crack positions of the pipe segments. The photos are automatically uploaded to the server. The server gives a targeted solution from the preset database first, and the construction personnel apply on their mobile phones to carry out construction according to the temporary solution. S4. After the plan is approved, the construction workers first open a grouting hole below the crack and a slurry outlet hole above the crack, and use a high-definition camera to take photos and upload them again. Then, the grouting device is used to make slurry and the air pump is started to pressurize. S5. After the slurry is prepared, the barrel of the grouting gun is inserted into the grouting hole. At this time, the measuring tube records the insertion depth of the pipe mouth and transmits it to the data processing module; S6. When grouting begins, the infrared camera is started. Since the temperature of the slurry is higher than that of the surrounding segments, the infrared camera can monitor the climbing height of the slurry in the cracks through the temperature. When the slurry reaches the slurry outlet, the air pump stops pressurizing. S7. After the grouting is completed, the various parameters recorded during the construction by the information processing module in the portable power supply are automatically uploaded to the server, and steps S1-S6 are repeated to complete the maintenance work of the subway tunnel cracks.

[0013] In the preferred solution, in step S4, the photo taken by the high-definition camera will mark the straight-line distance between the grouting hole and the grouting hole in the picture and divide it into ten equal parts, each of which represents 10% completion of the crack grouting; In step S6, the infrared camera will upload the thermal imaging photo to the information processing module. The information processing module will superimpose the photo taken by the high-definition camera with the photo taken by the infrared camera and analyze the progress of the crack repair according to the height of the temperature rise. The superimposed picture will be converted into a simple wireframe and projected onto area A on the transparent mask through the HUD projector.

[0014] The present invention provides a tunnel segment grouting kit and a construction method thereof, which have the following beneficial effects: by integrating technologies such as infrared cameras, high-definition cameras, HUD projectors, and data processing modules, the construction process is standardized and automated. The system can monitor the crack position and grouting temperature in real time, automatically record construction data and upload it to a backend server, and generate targeted repair plans, which not only improves construction efficiency and quality control level, but also reduces subjective errors in manual operations, and enhances the safety and reliability of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the connection of the set of the present invention; Figure 2 It is a schematic diagram of the workflow of the package of the present invention; Figure 3 It is a schematic diagram of the HUD display of the present invention; Figure 4 It is a wireframe diagram of the HUD display of the present invention; Figure 5 It is an axonometric view of the safety helmet of the present invention; Figure 6 is a cross-sectional view of the helmet of the present invention when viewed from above; Figure 7 It is a front view of the safety helmet of the present invention; Figure 8 is a sectional view of a side view of a safety helmet of the present invention; Fig. 9 is an isometric view of the portable power supply of the present invention; Fig.10 It is an axonometric view of a grouting gun of the present invention; Fig.11 It is an axonometric view of the grouting gun of the present invention from another direction; Fig.12 It is a cross-sectional view of a grouting gun of the present invention; Fig.13 It is a front view of the grouting device of the present invention.

[0016] In the figure: smart helmet 1; transparent mask 101; shaft 102; side jaw 103; infrared camera 104; heat dissipation hole 105; air duct 106; micro fan 107; HUD projector 108; shaft bracket 109; back side 110; high-definition camera 111; projection support plate 112; top cover 113; net 114; first interface 115; lighting lamp 116; RFID tag 117; portable power supply 2; belt bracket 201; cooling fan 202; solid-state battery 203; Breathable belt 204; tightening buckle 205; grouting gun 3; buttstock 301; sliding seat 302; sealing joint 303; feeding hole 304; grouting switch 305; limit plate 306; feeding valve 307; barrel sleeve 308; limiting knob 309; barrel 310; measuring tube 311; data processing module 312; second interface 313; pull rod 314; valve core 315; filling material 316; grouting device 4; frame 401; stirring bucket 402; air pump 403; grouting hole 5; grouting hole 6. DETAILED DESCRIPTION

[0017] Example 1 like Figure 1-13 As shown, a tunnel segment grouting set includes an intelligent safety helmet 1, a portable power source 2, and a grouting device 4; The intelligent safety helmet 1 is electrically connected to the portable power source 2, a grouting gun 3 is provided on one side of the grouting device 4, and a pipeline is connected between the grouting device 4 and the grouting gun 3; The smart safety helmet 1 includes a top cover 113, on both sides of which are provided with pivot brackets 109, on which a rotatable transparent mask 101 is provided, and one side of the top cover 113 is also provided with a back side portion 110, and the side of the back side portion 110 facing the transparent mask 101 is provided with multiple side jaws 103, and a hat strap is provided between the side jaws 103.

[0018] In the preferred embodiment, heat dissipation holes 105 are provided on both sides of the dorsal portion 110, and a micro fan 107 is provided on the outer side of the dorsal portion 110. Air ducts 106 are provided on both sides of the micro fan 107, and the air ducts 106 are connected to the heat dissipation holes 105. The micro fan 107 is used to cool the inside of the helmet.

[0019] In the preferred embodiment, an infrared camera 104 and a high-definition camera 111 are provided on the side of the side jaw 103 facing the transparent mask 101; The side jaws 103 are symmetrically arranged on both sides of the transparent mask 101, one side is provided with an infrared camera 104, and the other side is provided with a high-definition camera 111 and a lighting lamp 116. The infrared camera 104 is used to detect the surface temperature of the pipe segment, the high-definition camera 111 is used to take photos of the pipe segment, and the lighting lamp 116 is used for fill light.

[0020] A projection support plate 112 is further provided inside the lower two sides of the side jaw portion 103, and a HUD projector 108 is provided on the projection support plate 112. The HUD projector 108 is used to project real-time information on the transparent mask 101; In the preferred embodiment, an RFID tag 117 is further provided inside the top cover 113, and a net 114 is further provided below the RFID tag 117. The net 114 is used to fit the head of the wearer, and the RFID tag 117 is used for identity recognition by other devices; A first interface 115 is further provided below the back portion 110 , and the first interface 115 is used to electrically connect to the portable power source 2 .

[0021] In the preferred embodiment, the portable power supply 2 includes a belt bracket 201, breathable belts 204 are provided on both sides of the belt bracket 201, and tightening buckles 205 are provided between the breathable belts 204. A solid-state battery 203 is provided on one side of the belt bracket 201, and a cooling fan 202 is provided on the back of the solid-state battery 203. The cooling fan 202 is used to dissipate heat from the solid-state battery 203. A transformer mainboard and a wireless transmission module are provided above the solid-state battery 203. The wireless transmission module uploads the construction parameters of the construction workers to the background server through the network.

[0022] In the preferred embodiment, the grouting device 4 includes a frame 401, a stirring bucket 402 is provided above the frame 401, an air pump 403 is provided above the stirring bucket 402, the stirring bucket 402 is used to prepare the grouting material, and the air pump 403 is used to pressurize the grouting material into the grouting gun 3; The grouting gun 3 includes a gun butt 301, a gun barrel 310 is provided on one side of the gun butt 301, a feeding valve 307 is provided between the gun barrel 310 and the gun butt 301, a pull rod 314 is provided on one side of the feeding valve 307, a sliding seat 302 is provided between the pull rod 314 and the gun butt 301, the pull rod 314 and the sliding seat 302 are slidably connected, a material limiting knob 309 is provided at one end of the pull rod 314, and a valve core 314 is provided at the other end, and the valve core 314 is slidably connected to the feeding valve 307; The material limiting knob 309 is threadedly connected to the pull rod 314 , and the material limiting knob 309 is used to control the movement stroke of the valve core 314 .

[0023] In the preferred embodiment, a feeding hole 304 is provided above the feeding valve 307, the feeding hole 304 is connected to the inside of the feeding valve 307, and the feeding hole 304 is used to connect to the grouting device 4; A sealing joint 303 is also provided around the feeding hole 304 .

[0024] In the preferred embodiment, a grouting switch 305 is provided below the pull rod 314, and the grouting switch 305 controls the opening and closing of the valve core 314 by swinging and pulling the pull rod 314; A swingable limit plate 306 is also provided below the grouting switch 305, the limit plate 306 is hinged to the butt 301, and a coil spring is provided between the limit plate 306 and the butt 301; The outer circumference of the gun barrel 310 is wrapped with a gun barrel sleeve 308, and a filler 316 is provided between the gun barrel sleeve 308 and the gun barrel 310. The filler 316 is used to reduce the temperature loss rate of the slurry inside the gun barrel 310; The front end of the gun barrel 310 is also provided with a retractable measuring tube 311, which is slidably connected to the gun barrel sleeve 308, and is used to measure the depth of the gun muzzle inserted into the tube segment; A data processing module 312 is also provided in the gunstock 301 . A second interface 313 is provided below the data processing module 312 . The second interface 313 is used for being electrically connected to the portable power source 2 . A construction method using the above tunnel segment grouting set comprises: S1, the segment maintenance personnel wear the smart helmet 1 and the portable power supply 2 and enter the subway tunnel together with the grouting device 4 and the materials; S2. When passing through the tunnel maintenance door, the RFID tag 117 is connected to the sensing device, and the sensing device automatically identifies the identity of the maintenance personnel and records the entry time; S3, after the maintenance personnel arrive at the construction site, they start the portable power supply 2, start the high-definition camera 111 and the lighting lamp 116 to sample and take photos of the crack positions of the pipe segments, and the photos are automatically uploaded to the server. The server gives a targeted solution from the preset database first, and the construction personnel apply on the mobile phone to carry out construction according to the temporary solution; S4, after the plan is approved, the construction personnel first open a grouting hole 5 below the crack and a slurry outlet hole 6 above the crack, and use the high-definition camera 111 to take photos and upload them again, then use the grouting device 4 to make slurry, and start the air pump 403 to pressurize; S5, after the slurry is prepared, the barrel 310 of the grouting gun 3 is inserted into the grouting hole 5, at which time the measuring tube 311 records the insertion depth of the pipe mouth and transmits it to the data processing module 312; S6. When grouting begins, the infrared camera 104 is started. Since the temperature of the slurry is higher than the temperature of the surrounding segments, the infrared camera can monitor the climbing height of the slurry in the cracks through the temperature. When the slurry reaches the slurry outlet, the air pump 403 stops pressurizing. S7. After the grouting is completed, the various parameters recorded during the construction by the information processing module in the portable power supply 2 are automatically uploaded to the server, and steps S1-S6 are repeated to complete the maintenance work of the subway tunnel cracks.

[0025] In the preferred solution, in step S4, the photo taken by the high-definition camera 111 will mark the straight-line distance between the grouting hole 5 and the grouting hole 6 and divide it into ten equal parts, each of which represents 10% completion of the crack grouting; In step S6, the infrared camera 104 will upload the thermal imaging photo to the information processing module, which will superimpose the photo of the high-definition camera 111 with the photo of the infrared camera 104 and analyze the completion progress of the crack repair according to the height of the temperature rise. The superimposed picture will be converted into a simple wireframe and projected onto area A on the transparent mask 101 through the HUD projector 108. This process can be completed by transmitting it to the remote server via the wireless network and then transmitted back to the construction site. The specific implementation process of a tunnel segment grouting kit and a construction method thereof is as follows: Construction process S1: Preparation The segment maintenance personnel wear the smart helmet 1 and the portable power supply 2, carry the grouting device 4 and the required materials and enter the subway tunnel. The smart helmet 1 and the portable power supply 2 are electrically connected through the first interface 115 to ensure that all devices are powered normally.

[0026] S2: Identification and Recording When passing through the tunnel maintenance door, the RFID tag 117 in the smart helmet 1 is connected to the sensing device, and the sensing device automatically identifies the identity of the maintenance personnel and records the entry time. This step ensures the legitimacy of the construction personnel and the accuracy of the construction records.

[0027] S3: Crack location identification and photography After the maintenance personnel arrive at the construction site, they start the portable power supply 2, turn on the high-definition camera 111 and the lighting 116. The high-definition camera 111 takes samples of the crack positions of the pipe segments and automatically uploads the photos to the backend server. The server gives a temporary repair plan from the preset database, and the construction personnel apply on their mobile phones to carry out the construction according to the temporary plan.

[0028] S4: Open grouting holes and grouting holes After the plan is approved, the construction personnel first open a grouting hole 5 below the crack and a grouting hole 6 above the crack. The high-definition camera 111 is used again to take photos of the positions of the grouting hole 5 and the grouting hole 6, and upload them to the server. The photos taken by the high-definition camera 111 will mark the straight-line distance between the grouting hole 5 and the grouting hole 6 in the picture, and divide it into ten equal parts, each of which represents 10% completion of the crack grouting.

[0029] S5: Slurry preparation and pressurization The grouting device 4 is used to prepare the slurry, and the slurry in the mixing bucket 402 is pressurized by the air pump 403 and is ready to be injected into the crack. After the slurry is prepared, the barrel 310 of the grouting gun 3 is inserted into the grouting hole 5. The measuring tube 311 records the insertion depth of the gun muzzle and transmits the data to the data processing module 312.

[0030] S6: Grouting and real-time monitoring When grouting begins, the infrared camera 104 is started. Since the temperature of the slurry is higher than the temperature of the surrounding segments, the infrared camera 104 can monitor the climbing height of the slurry in the cracks through the temperature. When the slurry reaches the slurry outlet 6, the air pump 403 stops pressurizing.

[0031] During the grouting process, the infrared camera 104 will upload the thermal imaging photos to the data processing module 312. The data processing module 312 superimposes the photos of the high-definition camera 111 with the photos of the infrared camera 104, and analyzes the degree of completion of the cracks through the image processing algorithm. The specific steps are as follows: Image registration: Use an image registration algorithm to register the visible light photo taken by the high-definition camera 111 with the thermal imaging photo taken by the infrared camera 104 to ensure that the pixels of the two photos correspond one to one.

[0032] The algorithm steps are as follows: 1. Construct scale space: (1) Gaussian blur processing is performed on the visible light photos taken by the high-definition camera 111 and the thermal imaging photos taken by the infrared camera 104 to generate a multi-scale image pyramid.

[0033] 2. Detect extreme points: (1) In the scale space, by comparing each pixel with the pixels in its neighborhood, local extreme points are found as candidate key points.

[0034] 3. Key point positioning: (1) Accurately locate candidate key points and eliminate points with low contrast and unstable edge responses.

[0035] 4. Direction allocation: (1) Each keypoint is assigned a dominant direction based on the orientation histogram of the gradients in its neighborhood.

[0036] 5. Feature Descriptor: (1) Take a 16x16 window around the key point and divide it into 16 4x4 blocks. For each block, calculate the gradient histogram in 8 directions to form a 128-dimensional feature vector.

[0037] 6. Feature matching: (1) Use KD tree or brute force matching method to find the nearest neighbor matching points between the key points of two images.

[0038] (2) Reliable matching points are screened out through ratio testing (for example, the ratio of the nearest neighbor distance to the next nearest neighbor distance is less than 0.8).

[0039] 7. Transformation model estimation: (1) Use the RANSAC algorithm to estimate the transformation model (such as homography) from the matching points.

[0040] 8. Image Registration: (1) Apply a transformation model to one of the images to align it with the other.

[0041] (2) Fuse the aligned images to obtain the final registration result.

[0042] Temperature threshold segmentation: Set a temperature threshold to segment the high-temperature area (i.e., slurry area) from the low-temperature area (i.e., un-grouted area) in the thermal imaging photo.

[0043] 1. Data preprocessing: (1) Reading the raw data of the thermal imaging photo taken by the infrared camera 104.

[0044] (2) Use Gaussian filtering to denoise the thermal imaging data.

[0045] 2. Determine the temperature threshold: (1) Calculate the grayscale histogram of the thermal imaging photo.

[0046] (2) Use the Otsu method to automatically determine the optimal threshold T.

[0047] 3. Temperature threshold segmentation: (1) Binarization processing: (2) Traverse each pixel in the thermal imaging photo. If the grayscale value of the pixel is greater than or equal to T, it is marked as 1 (high temperature area), otherwise it is marked as 0 (low temperature area).

[0048] 4. Morphological processing: (1) Perform an opening operation on the binarized image to remove small noise points.

[0049] (2) Perform a closing operation on the binarized image to fill small holes.

[0050] (3) Mark the connected regions of the binarized image and merge adjacent high-temperature regions into one connected region.

[0051] 5. Post-processing of results: (1) Use median filtering to smooth the boundaries of the segmentation results.

[0052] (2) Fill the small holes in the high-temperature area after segmentation.

[0053] (3) Calculate the area of ​​each connected region and count the total area of ​​the high-temperature region.

[0054] 6. Result output: (1) Output binary thermal imaging photos.

[0055] (2) The binarization result is superimposed with the visible light photo taken by the high-definition camera 111 to generate a color image with temperature information.

[0056] Calculation of crack filling degree: Based on the result of the temperature threshold segmentation, the area of ​​the filled region in the crack is calculated. Combined with the pre-marked decimal points in the photo taken by the high-definition camera 111, the crack filling degree is calculated.

[0057] 1. Data preparation: (1) Read the thermal imaging photos taken by the infrared camera 104 and the visible light photos taken by the high-definition camera 111.

[0058] (2) Perform Gaussian filtering to denoise the thermal imaging photos and perform contrast enhancement on the visible light photos.

[0059] 2. Temperature threshold segmentation: (1) Use the Otsu method to determine the optimal temperature threshold T.

[0060] (2) Binarize each pixel in the thermal imaging photo.

[0061] (3) Perform opening and closing operations on the binarized image to remove small noise points and fill small holes.

[0062] (4) Mark the connected regions of the binarized image and extract all connected high-temperature regions.

[0063] 3. Calculate the area of ​​the crack that has been filled: (1) Use the cv2.findContours function in the OpenCV library to find all connected high-temperature areas.

[0064] (2) Use the cv2.contourArea function to calculate the area of ​​each connected region.

[0065] (3) Add up the areas of all connected regions to get the total filling area.

[0066] 4. Combined with the photos taken by the high-definition camera 111: (1) Use SIFT or SURF algorithm to register the visible light photo with the thermal imaging photo.

[0067] (2) Mark the straight-line distance between the grouting hole 5 and the grouting hole 6 in the registered visible light photograph and divide it into ten equal parts.

[0068] 5. Calculate the degree of filling of the crack: (1) Project the decimal points marked in the visible light photo onto the registered thermal imaging photo.

[0069] (2) For each decile, calculate the area of ​​the high-temperature region (slurry region) within that section.

[0070] (3) Calculate the filling degree of each section: filling degree = (area of ​​the high temperature area of ​​the section / total area of ​​the section) * 100%.

[0071] (4) Add up the filling degree of each segment to obtain the total crack filling degree.

[0072] Overlay and display: The processed images are overlaid and converted into simple wireframes, which are projected onto area A on the transparent mask 101 through the HUD projector 108, so that construction workers can view the progress of crack filling in real time.

[0073] 1. Generate a simple wireframe: (1) Generate corresponding line segments based on the filling degree of each segment.

[0074] (2) The filling degree of each segment of 10% can be represented by a line segment, and the length of the line segment represents the filling degree of the segment.

[0075] 2. Image overlay: (1) Superimpose the generated simple wireframe onto the registered visible light photograph.

[0076] (2) Use the cv2.addWeighted function in the OpenCV library to overlay images.

[0077] (3) Select different colors or transparencies to distinguish different fill levels.

[0078] 3. Projection to HUD: (1) The HUD projector 108 is used to project the superimposed image onto area A on the transparent mask 101 .

[0079] (2) Adjust the position and angle of the projector to ensure that the image is clear and the position is accurate.

[0080] (3) Adjust the brightness and contrast of the projector to ensure that the image is clearly visible under different lighting conditions.

[0081] S7: Data upload and repeat operation After the grouting is completed, the information processing module in the portable power supply 2 automatically uploads the various parameters recorded during the construction to the server. Repeat steps S1-S6 until the maintenance work of the subway tunnel cracks is completed.

[0082] Through the above steps, the tunnel segment grouting kit of the present invention not only improves the construction efficiency and quality control level, but also enhances the safety and reliability of construction. The application of image processing algorithm makes the monitoring of crack filling more accurate and intuitive, providing real-time and reliable data support for construction personnel.

[0083] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A tunnel segment grouting kit, characterized by: It comprises an intelligent safety helmet (1), a portable power source (2), and a grouting device (4); The intelligent safety helmet (1) is electrically connected to the portable power source (2); a grouting gun (3) is provided on one side of the grouting device (4); and a pipeline is connected between the grouting device (4) and the grouting gun (3); The intelligent safety helmet (1) comprises a top cover (113), wherein rotating shaft brackets (109) are provided on both sides of the top cover (113), a rotatable transparent face mask (101) is provided on the rotating shaft brackets (109), a back side portion (110) is further provided on one side of the top cover (113), a plurality of side jaws (103) are provided on the side of the back side portion (110) facing the transparent face mask (101), and a hat strap is provided between the side jaws (103).

2. According to claim 1, a tunnel segment grouting kit is characterized by: Heat dissipation holes (105) are also provided on both sides of the back side portion (110), a micro fan (107) is also provided on the outer side of the back side portion (110), air ducts (106) are provided on both sides of the micro fan (107), the air ducts (106) are connected to the heat dissipation holes (105), and the micro fan (107) is used to cool the inside of the helmet.

3. The tunnel segment grouting kit according to claim 1, characterized in that: An infrared camera (104) and a high-definition camera (111) are provided on the side of the side jaw (103) facing the transparent mask (101); The side jaws (103) are symmetrically arranged on both sides of the transparent mask (101), one side of which is provided with an infrared camera (104), and the other side is provided with a high-definition camera (111) and an illumination lamp (116), the infrared camera (104) is used to detect the surface temperature of the pipe segment, the high-definition camera (111) is used to take pictures of the pipe segment, and the illumination lamp (116) is used to provide supplementary light; Projection support plates (112) are also provided inside the lower sides of the side jaw portion (103), and a HUD projector (108) is provided on the projection support plate (112). The HUD projector (108) is used to project real-time information on the transparent mask (101).

4. The tunnel segment grouting kit according to claim 1, characterized in that: An RFID tag (117) is also provided inside the top cover (113), and a pocket net (114) is also provided below the RFID tag (117). The pocket net (114) is used to fit the head of the wearer, and the RFID tag (117) is used for identity recognition by other devices. A first interface (115) is also provided below the back side portion (110), and the first interface (115) is used to electrically connect to the portable power source (2).

5. The tunnel segment grouting kit according to claim 1, characterized in that: The portable power source (2) comprises a belt support (201), breathable belts (204) are provided on both sides of the belt support (201), a tightening buckle (205) is provided between the breathable belts (204), a solid-state battery (203) is provided on one side of the belt support (201), a cooling fan (202) is provided on the back of the solid-state battery (203), the cooling fan (202) is used to dissipate heat from the solid-state battery (203), a transformer mainboard and a wireless transmission module are provided above the solid-state battery (203), and the wireless transmission module uploads the construction parameters of the construction personnel to a background server via a network.

6. The tunnel segment grouting kit according to claim 1, characterized in that: The grouting device (4) comprises a frame (401), a stirring bucket (402) is provided above the frame (401), an air pump (403) is provided above the stirring bucket (402), the stirring bucket (402) is used to prepare grouting material, and the air pump (403) is used to pressurize the grouting material into the grouting gun (3); The grouting gun (3) comprises a gun butt (301), a gun barrel (310) is provided on one side of the gun butt (301), a feeding valve (307) is provided between the gun barrel (310) and the gun butt (301), a pull rod (314) is provided on one side of the feeding valve (307), a sliding seat (302) is provided between the pull rod (314) and the gun butt (301), the pull rod (314) and the sliding seat (302) are slidably connected, a material limiting knob (309) is provided at one end of the pull rod (314), and a valve core (314) is provided at the other end, and the valve core (314) is slidably connected to the feeding valve (307); The material limiting knob (309) is threadedly connected to the pull rod (314), and the material limiting knob (309) is used to control the movement stroke of the valve core (314).

7. The tunnel segment grouting kit according to claim 6, characterized in that: A feeding hole (304) is provided above the feeding valve (307), the feeding hole (304) is connected to the inside of the feeding valve (307), and the feeding hole (304) is used to be connected to the grouting device (4); A sealing joint (303) is also provided around the feeding hole (304).

8. The tunnel segment grouting kit according to claim 6, characterized in that: A grouting switch (305) is provided below the pull rod (314), and the grouting switch (305) controls the opening and closing of the valve core (314) by swinging and pulling the pull rod (314); A swingable limit plate (306) is also provided below the grouting switch (305), the limit plate (306) is hinged to the butt (301), and a coil spring is provided between the limit plate (306) and the butt (301); The outer circle of the gun barrel (310) is wrapped with a gun barrel sleeve (308), and a filler (316) is provided between the gun barrel sleeve (308) and the gun barrel (310). The filler (316) is used to reduce the temperature loss rate of the slurry inside the gun barrel (310); A retractable measuring tube (311) is also provided at the front end of the gun barrel (310). The measuring tube (311) is slidably connected to the gun barrel sleeve (308). The measuring tube (311) is used to measure the depth of the gun muzzle inserted into the tube segment. A data processing module (312) is also provided in the gunstock (301), and a second interface (313) is provided below the data processing module (312). The second interface (313) is used for being electrically connected to a portable power source (2).

9. A construction method for a tunnel segment grouting set according to any one of claims 1 to 8, characterized in that: The method includes: S1. The segment maintenance personnel wear a smart helmet (1) and a portable power source (2) and enter the subway tunnel together with a grouting device (4) and materials; S2. When passing through the tunnel maintenance door, the RFID tag (117) is connected to the sensing device, and the sensing device automatically identifies the identity of the maintenance personnel and records the entry time; S3, after the maintenance personnel arrive at the construction site, they start the portable power supply 2, start the high-definition camera (111) and the lighting lamp (116) to sample and take photos of the crack positions of the pipe segments, and automatically upload the photos to the server. The server gives a targeted solution from a preset database in priority, and the construction personnel apply on their mobile phones to carry out construction according to the temporary solution; S4. After the plan is approved, the construction personnel first open a grouting hole (5) below the crack and a grouting hole (6) above the crack, and use the high-definition camera (111) to take photos and upload them, then use the grouting device (4) to prepare slurry, and start the air pump (403) to increase the pressure; S5, after the slurry is prepared, the barrel (310) of the grouting gun (3) is inserted into the grouting hole (5), at which time the measuring tube (311) records the insertion depth of the pipe mouth and transmits it to the data processing module (312); S6. When grouting begins, the infrared camera (104) is started. Since the temperature of the slurry is higher than the temperature of the surrounding segments, the infrared camera can monitor the climbing height of the slurry in the cracks through the temperature. When the slurry reaches the slurry outlet, the air pump (403) stops pressurizing. S7. After the grouting is completed, the various parameters recorded during the construction by the information processing module in the portable power supply (2) are automatically uploaded to the server, and steps S1-S6 are repeated to complete the maintenance work of the subway tunnel cracks.

10. The construction method of a tunnel segment grouting set according to claim 9, characterized in that: In step S4, the photo taken by the high-definition camera (111) will mark the straight-line distance between the grouting hole (5) and the grouting hole (6) and divide it into ten equal parts, each of which represents 10% completion of the crack grouting; In step S6, the infrared camera (104) uploads the thermal imaging photo to the information processing module, which superimposes the photo taken by the high-definition camera (111) and the photo taken by the infrared camera (104) and analyzes the progress of crack remediation according to the height of the temperature rise. The superimposed image is converted into a simple wireframe and projected onto area A on the transparent mask (101) through the HUD projector (108).

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