Device and method for detecting underground pipeline blockage and clogging by using ground penetrating radar

Abstract

The present application relates to a kind of detection device and method for underground pipeline blockage, silt using ground penetrating radar, ground penetrating radar is connected with tablet computer by wireless, for exciting high-frequency electromagnetic wave and emitting to detection target;The radar battery is installed in the top end battery slot of ground penetrating radar, for providing the required power for ground penetrating radar;The ranging wheel is installed in the rear end of ground penetrating radar and is detachably connected with ground penetrating radar, for the distance of moving forward when ground penetrating radar detects;The traction rope is installed in the front end of ground penetrating radar and is detachably connected with the draw hook of ground penetrating radar, for dragging ground penetrating radar to move in specified direction;The tablet computer is connected with ground penetrating radar by wireless, for controlling ground penetrating radar to start, pause, end emitting high-frequency electromagnetic wave, and the detection image waveform is shown.The present application can solve the problem of position deviation of pipeline, complex surrounding environment, objective factor influence problem of excavation trench when using ground penetrating radar to detect that understanding of drawing is not in place.

Description

Devices and methods for detecting blockages and siltation in underground pipelines using ground-penetrating radar Technical Field

[0001] This invention relates to a non-destructive detection method for underground pipelines, and more particularly to a device and method for detecting blockages and siltation in underground pipelines using ground penetrating radar. Background Technology

[0002] Ground-penetrating radar (GPR) is a non-destructive testing technology using high-frequency electromagnetic waves. This technology is widely used for the non-destructive testing and assessment of large-scale transportation infrastructure such as roads, bridges, tunnels, pipe jacking, and underground pipelines due to GPR's advantages of high detection speed, surface penetration, and flexible coverage. GPR is activated via a tablet computer, emitting high-frequency electromagnetic waves towards the target. Because different materials within the target have different electrical properties, they generate reflected electromagnetic waves of varying characteristics, which are received by the tablet computer and converted into image information. In actual underground pipeline detection, technicians analyze the differences in waveform, time, amplitude, and image between the reflected electromagnetic wave data from within the target structure and the incident wave to determine information about the subsurface structure and identify hidden defects.

[0003] Currently, the investigation of underground pipeline blockages and siltation mainly relies on engineering technicians' assessment of drawings, the surrounding environment, and actual excavation methods. However, this approach has several shortcomings:

[0004] 1. There are errors in the understanding and interpretation of pipeline drawings by engineering technicians. As a result, there are deviations between the location of the blocked or silted pipeline and the actual location of the pipeline. This leads to a lot of manpower and financial resources being wasted in subsequent construction and relocation processes, and affects the construction period.

[0005] 2. Underground pipelines are an important part of urban infrastructure. The surrounding environment is complex, and the location of pipelines is intertwined with other infrastructure. The pipelines are also intricately connected. If construction is carried out without knowing the location of pipelines, it is easy to damage other underground pipelines and infrastructure, and have an adverse impact on social property safety.

[0006] 3. Excavating trenches to confirm the location of pipelines can directly and effectively determine the specific location of blockages and siltation points, but the drawback is that it has a significant impact on the surrounding environment. Furthermore, the layout of trench excavation is affected by objective factors such as topography and surrounding environmental factors, so this method has certain limitations.

[0007] The inability to accurately identify blockages and siltation points in underground pipelines poses significant problems and safety hazards to design, construction, and surrounding buildings. Therefore, developing a method for detecting blockages and siltation in underground pipelines using ground-penetrating radar (GPR) to address issues such as inaccurate interpretation of drawings leading to pipeline location deviations, complex surrounding environments, and objective factors affecting trench excavation has become an urgent technical challenge in the field of GPR. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of the aforementioned inability to accurately identify underground pipeline blockages and siltation points, and to provide a device and method for detecting underground pipeline blockages and siltation using ground-penetrating radar. This device and method are easy to operate, simple in composition, and can quickly, timely, and effectively complete the detection and inspection tasks, eliminating safety hazards to design, construction, and surrounding buildings.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A ground-penetrating radar (GPR) detection device for underground pipe blockages and siltation includes: a GPR, a radar battery, a ranging wheel, a traction rope, and a tablet computer. The GPR and the tablet computer are wirelessly connected, and the GPR is used to generate high-frequency electromagnetic waves and transmit them to the target. The radar battery is installed in a battery slot at the top of the GPR to provide the necessary power. The ranging wheel is installed at the rear end of the GPR and detachably connected to it, and is used to measure the forward movement distance of the GPR during detection. The traction rope is installed at the front end of the GPR and detachably connected to it, and is used to pull the GPR in a specified direction. The tablet computer is wirelessly connected to the GPR and is used to control the GPR to start, pause, and stop transmitting high-frequency electromagnetic waves, and to display the waveform of the detected image.

[0011] A method for detecting blockages and siltation in underground pipelines using ground-penetrating radar (GPR) employs a GPR detection device for underground pipeline blockages and siltation. The specific steps are as follows:

[0012] Step 1: Assemble the ground penetrating radar, radar battery, ranging wheel, and traction rope. Install the radar battery in the battery slot directly above the ground penetrating radar, install the ranging wheel at the rear of the ground penetrating radar, and install the traction rope at the rear of the ground penetrating radar.

[0013] Step 2: Turn on the power switch of the ground penetrating radar and simultaneously open the tablet computer to connect to the ground penetrating radar via wireless control.

[0014] Step 3: Based on the approximate location of the suspected blockage or siltation area in the pipeline, three equidistant radar detection lines A1A2, B1B2, and C1C2 are laid out perpendicular to the pipeline from the center of the suspected blockage or siltation area to both sides.

[0015] Step four: Based on the established detection network, starting from detection points A1, B1, and C1, detection lines A1A2, B1B2, and C1C2 are established. During the detection process, data is wirelessly transmitted to a tablet computer. After the detection is completed, data processing and relevant parameters are adjusted to finally display the soil layer image of the detection line. The center points Z1, Z2, and Z3 of the pipeline cross-section are determined through analysis and comparison. Then, starting from detection points A2, B2, and C2, detection lines A2A1, B2B1, and C2C1 are established. After data processing and parameter adjustment, the resulting image is compared with the image from the previous step to accurately locate the pipeline position Z1, Z2, and Z3. The three-dimensional coordinates of the three points are measured using GPS.

[0016] Step 5: Based on the determined pipeline location, lay out five detection lines parallel to the pipeline. Detection line F1F2 is laid directly above the pipeline; detection lines E1E2 and D1D2 are laid on the left side of the pipeline, with detection line E1E2 0.3–0.5 meters away from the pipeline and detection line D1D2 1–0.5 meters away from the pipeline; detection lines G1G2 and H1H2 are laid on the right side of the pipeline, with detection line G1G2 0.3–0.5 meters away from the pipeline and detection line H1H2 1–0.5 meters away from the pipeline. Use GPS to perform three-dimensional coordinate measurements on the starting and ending positions of the five detection lines.

[0017] Step Six: Based on the established detection network, 1) First, detect the detection line F1F2, starting from F1 and proceeding through points Z1, Z2, and Z3 towards F2. After detection, perform image processing on the results, using Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer. Use the image to determine if there is any blockage or siltation above the pipeline. Verify the blockage points by detecting from F2 to F1. 2) Detect from E1 to E2. Immediately after detection, perform image processing on the results, using Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer. Use the image to determine if there is any blockage or siltation on the left side of the pipeline. If blockage or siltation is found... Starting from point D1, probe towards point D2. Process the results into images. Use Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer. Use the images to determine the extent of blockage or siltation. 3) Starting from point G1, probe towards point G2. Immediately after the probe is completed, process the results into images. Use Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer. Determine if there is blockage or siltation on the right side of the pipeline. If there is blockage or siltation, start from point H1 and probe towards point H2. Immediately process the results into images. Use Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer. Use the images to determine the extent of blockage or siltation.

[0018] Furthermore, if suspected blockages or siltation points are found during the detection process, reverse detection can be performed on the survey lines. A denser survey line network can be added between the survey lines to conduct precise detection near the blockages or siltation points. Finally, the detection results are processed, analyzed, and compared through image processing and adjustment of relevant parameters to ultimately determine the location, depth, size, and range of influence of the blockages or siltation points.

[0019] The beneficial effects of this invention are:

[0020] This invention addresses the problems encountered when using ground-penetrating radar (GPR) for detection, such as inadequate understanding of blueprints leading to pipeline location deviations, complex surrounding environments, and objective factors affecting trench excavation. The method is convenient to operate, simple in composition, and can quickly, promptly, and effectively complete detection tasks, eliminating safety hazards to design, construction, and surrounding buildings. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the method for detecting blockages and siltation in underground pipelines using ground-penetrating radar according to the present invention;

[0022] Figure 2 is a schematic diagram of the device of the present invention used for ground penetrating radar to detect blockages and siltation in underground pipelines;

[0023] Figure 3 is a flowchart of the method for detecting blockages and siltation in underground pipelines using ground-penetrating radar according to the present invention;

[0024] In the picture: 1. Ground penetrating radar 2. Radar battery 3. Range measuring wheel 4. Traction rope 5. Traction rope Detailed Implementation

[0025] The implementation method of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] As shown in Figure 2, a ground-penetrating radar detection device for underground pipe blockage and siltation includes: ground-penetrating radar 1, radar battery 2, ranging wheel 3, traction rope 4, and tablet computer 5.

[0027] The ground-penetrating radar 1 is wirelessly connected to the tablet computer 5 to generate high-frequency electromagnetic waves and transmit them to the target. The radar battery 2 is installed in the battery slot at the top of the ground-penetrating radar 1 to provide the ground-penetrating radar with the required power. The ranging wheel 3 is installed at the rear of the ground-penetrating radar 1 and is detachably connected to the ground-penetrating radar to measure the distance the ground-penetrating radar moves forward during detection. The traction rope 4 is installed at the front of the ground-penetrating radar 1 and is detachably connected to the hook of the ground-penetrating radar 1 to pull the ground-penetrating radar to move in a specified direction. The tablet computer 5 is wirelessly connected to the ground-penetrating radar 1 and controls the ground-penetrating radar 1 to start, pause, and stop transmitting high-frequency electromagnetic waves, and displays the detected wave measurement images.

[0028] As shown in Figures 1 and 3, a method for detecting blockages and siltation in underground pipelines using ground-penetrating radar specifically includes the following steps:

[0029] Step 1, as shown in Figure 2, assemble the ground penetrating radar 1, radar battery 2, ranging wheel 3, and traction rope 4. The radar battery 2 is installed in the battery slot directly above the ground penetrating radar 1, the ranging wheel 3 is installed at the rear end of the ground penetrating radar 1, and the traction rope 4 is installed at the rear end of the ground penetrating radar 1.

[0030] Step 2, as shown in Figure 2, after the ground penetrating radar 1 is assembled and checked to be correct, turn on the power switch of the ground penetrating radar 1, and at the same time turn on the tablet computer 5 to connect to the ground penetrating radar 1 wirelessly.

[0031] Step 3, as shown in Figure 1, based on the approximate location of the blockage or sludge point in the pipeline, three equidistant radar detection lines A1A2, B1B2, and C1C2 are laid out perpendicular to the pipeline with the blockage or sludge point as the center, and the middle detection line B1B2 is laid out at the blockage or sludge point.

[0032] Step four, as shown in Figure 1, based on the deployed detection network, starting from detection points A1, B1, and C1, detection lines A1A2, B1B2, and C1C2 are established. During the detection process, data is wirelessly transmitted to tablet computer 5. After the detection is completed, data processing and relevant parameters are adjusted, and finally, the soil layer image of the detection line is displayed. The center points Z1, Z2, and Z3 of the pipeline cross-section are determined through analysis and comparison. By starting from A2, B2, and C2, detection lines A2A1, B2B1, and C2C1 are established. After data processing and parameter adjustment, the resulting image is compared with the image from the previous step to accurately locate the pipeline position.

[0033] Step 5, as shown in Figure 1, based on the determined pipeline location, lay out five detection lines parallel to the pipeline. Detection line F1F2 is laid directly above the pipeline; detection lines E1E2 and D1D2 are laid on the left side of the pipeline, with detection line E1E2 0.3-0.5 meters away from the pipeline and detection line D1D2 1-0.5 meters away from the pipeline; detection lines G1G2 and H1H2 are laid on the right side of the pipeline, with detection line G1G2 0.3-0.5 meters away from the pipeline and detection line H1H2 1-0.5 meters away from the pipeline.

[0034] Step Six, as shown in Figure 1, based on the established detection network: 1) First, detect along detection lines F1F2, starting from F1 and proceeding through Z1, Z2, and Z3 towards F2. After detection, analyze the resulting images. Use Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer, and use the images to determine if there is any blockage or siltation above the pipeline. Blockage points can be verified by detecting from F2 towards F1. 2) Detect from E1 towards E2. After detection, analyze the resulting images to determine if there is any blockage or siltation on the left side of the pipeline. If blockage or siltation exists, detect from D1 towards D2, and analyze the detection results to determine the extent of blockage or siltation. 3) Detect from G1 towards G2. After detection, analyze the resulting images to determine if there is any blockage or siltation on the right side of the pipeline. If blockage or siltation exists, detect from H1 towards H2, and analyze the detection results to determine the extent of blockage or siltation.

[0035] If suspected blockages or siltation points are discovered during the detection process, reverse detection can be performed on the survey lines. A denser survey line network can be added between survey lines to conduct precise detection near the blockages or siltation points. Finally, the detection results are analyzed and compared through data processing and adjustment of relevant parameters to ultimately determine the depth, size, and affected area of ​​the blockages or siltation points.

[0036] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for detecting blockages and siltation in underground pipelines using ground-penetrating radar (GPR), comprising a GPR detection device including a GPR, a radar battery, a ranging wheel, a traction rope, and a tablet computer. The GPR and the tablet computer are wirelessly connected, used to excite high-frequency electromagnetic waves and transmit them to the target. The radar battery is installed in a battery slot at the top of the GPR to provide power to the GPR. The ranging wheel is installed at the rear of the GPR and detachably connected to it, used to measure the forward movement distance of the GPR during detection. The traction rope is installed at the front of the GPR and detachably connected to it, used to pull the GPR in a specified direction. The tablet computer is wirelessly connected to the GPR to control the GPR to start, pause, and stop transmitting high-frequency electromagnetic waves, and to display the detected image waveform. The method is characterized by... The specific steps of this method are as follows: Step 1, assemble the ground-penetrating radar, radar battery, ranging wheel, and traction rope. The radar battery is installed in the battery slot directly above the ground-penetrating radar, the ranging wheel is installed at the rear of the ground-penetrating radar, and the traction rope is installed at the rear of the ground-penetrating radar. Step 2, turn on the power switch of the ground-penetrating radar and simultaneously open the tablet computer to connect to the ground-penetrating radar via wireless control. Step 3, based on the approximate location of the suspected blockage or siltation area in the pipeline, lay out three equidistant radar detection lines A1A2, B1B2, and C1C2 perpendicular to the pipeline, radiating outwards from the center of the suspected blockage or siltation area. Step 4, according to the layout of the detection network, starting from detection points A1, B1, and C1, detect lines A1A2, B1B2, and C1C2. During the detection process, data is transmitted wirelessly to the tablet computer. After the detection is completed, data processing and adjustment of relevant parameters are performed to finally obtain the soil layer map of the detection lines. As shown, the center points Z1, Z2, and Z3 of the pipeline cross-section are determined through analysis and comparison. Starting from detection points A2, B2, and C2, detection lines A2A1, B2B1, and C2C1 are established. After data processing and parameter adjustment, the resulting image is compared with the image from the previous step to accurately locate the pipeline position Z1, Z2, and Z3. The three-dimensional coordinates of these three points are measured using GPS. In step five, based on the determined pipeline position, five detection lines are laid parallel to the pipeline. Detection line F1F2 is laid directly above the pipeline; detection lines E1E2 and D1D2 are laid on the left side of the pipeline, with detection line E1E2 0.3–0.5 meters from the pipeline and detection line D1D2 1–0.5 meters from the pipeline; detection lines G1G2 and H1H2 are laid on the right side of the pipeline, with detection line G1G2 0.3–0.5 meters from the pipeline and detection line H1H2 1–0.5 meters from the pipeline.5 meters, using GPS to perform three-dimensional coordinate measurements on the starting and ending positions of the five survey lines respectively; Step 6, according to the layout of the detection network, 1) First, detect survey lines F1F2, starting from F1 and proceeding through points Z1, Z2, and Z3 to point F2. After detection, perform image processing on the results, using Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer, and use the image to determine whether there is blockage or siltation above the pipeline. Verify the blockage point by detecting from F2 to F1. 2) Detect from E1 to E2. Immediately after detection, perform image processing on the results, using Hilbert variation parameters to create a difference between the water medium and the surrounding soil layer, and use the image to determine whether there is blockage or siltation on the left side of the pipeline. If blockage or siltation is found, probe from point D1 to point D2, process the results using image processing, and use Hilbert parameters to create a difference between the water medium and the surrounding soil layer. Then, use the image to determine the extent of the blockage or siltation. Alternatively, probe from point G1 to point G2, and immediately process the results using image processing. Use Hilbert parameters to create a difference between the water medium and the surrounding soil layer to determine if blockage or siltation exists on the right side of the pipeline. If blockage or siltation is found, probe from point H1 to point H2, and immediately process the results using image processing. Use Hilbert parameters to create a difference between the water medium and the surrounding soil layer to determine the extent of the blockage or siltation.

2. The detection method according to claim 1, characterized in that: If suspected blockages or siltation points are found during the detection process, reverse detection can be carried out on the survey line. The survey line network can be increased between the survey lines to conduct precise detection near the blockages or siltation points. Finally, the detection results are processed, analyzed, and compared by internal image processing and adjustment of relevant parameters to ultimately determine the location, depth, size, and range of influence of the blockages or siltation points.

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