A detection method, system and device for accurately positioning a large-diameter rainwater pipeline and a storage medium

Abstract

The present application relates to a kind of detection method for accurate positioning of large-diameter rainwater pipeline, comprising the following steps: obtaining the coordinates of rainwater well in site, forming pipeline detection reference system;According to the pipeline detection reference system, the estimated trend line of pipeline is obtained, and the detection section is set in the lateral range of the estimated trend line of pipeline;Detection point is laid out at the detection section;Flexible drilling equipment is used to drill the pipeline body at the detection point;Drilling data and detection data are collected during the detection process;According to the fitting restoration of detection data, the pipeline section model is formed;Through the linkage fitting of multiple pipeline section models, the complete pipeline space model and detection result report are formed.The present application realizes the accurate detection of large-diameter rainwater pipeline by well reference positioning, quantitative layout of detection section and point, non-destructive drilling of flexible drill bit and multi-section fitting restoration, and guarantees the reliability of detection result.

Description

Technical Field

[0001] This invention relates to the field of foundation pit construction technology, and specifically to a detection method, system, equipment, and storage medium for accurately locating large-diameter rainwater pipelines. Background Technology

[0002] Construction projects involving building foundation pits and underground engineering projects located near existing municipal super-large diameter rainwater pipelines often lack pipeline completion data, and can only determine the general direction through surface rainwater wells. This places extremely high demands on the accuracy of pipeline location detection and construction safety.

[0003] Conventional pipeline detection and construction methods have several significant drawbacks: First, conventional pipeline detectors and ground-penetrating radar have poor signal penetration and insufficient detection accuracy for ultra-large diameter, deeply buried concrete rainwater pipelines. They cannot accurately obtain the pipeline's coordinates, elevation, and diameter, making them prone to misjudgment and omission, and failing to meet the high-precision requirements for pipeline protection during foundation pit construction. Second, traditional drilling detection technology uses rigid drill bits, which are prone to touching, scratching, or even penetrating existing pipelines during drilling, causing pipeline leakage and damage, leading to ground subsidence in the surrounding area, affecting the normal operation of pipelines, and posing significant construction safety risks. Third, existing detection technology lacks standardized point layout and fitting procedures. The layout of detection points lacks clear quantitative basis, is highly random, and cannot fully restore the pipeline's direction, burial depth, and diameter parameters, easily resulting in detection blind spots. Fourth, when a detection point fails to detect a pipeline, there is a lack of standardized supplementary measurement and verification procedures, which easily leads to pipeline deviations, leaving significant safety hazards for subsequent foundation pit construction and failing to guarantee the safe operation of pipelines during foundation pit excavation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a detection method, system, equipment and storage medium for accurate positioning of large-diameter rainwater pipelines. This solves the problems of existing pipeline detection methods for ultra-large diameter, deeply buried concrete rainwater pipelines, which have poor signal penetration, insufficient detection accuracy, and are prone to detection blind spots. Furthermore, drilling detection is prone to damaging pipelines and cannot guarantee the safe operation of pipelines during the excavation of foundation pits.

[0005] The technical solution to achieve the above objective is: a detection method for accurately locating large-diameter rainwater pipelines, comprising the following steps: obtaining the precise coordinates of ground rainwater wells within the site to form a pipeline detection benchmark system; obtaining the estimated pipeline route line based on the pipeline detection benchmark system, and setting detection cross-sections at equal intervals within the transverse range of the estimated pipeline route line; setting up detection points at the detection cross-sections, and locating and numbering the detection points to form a detection grid; drilling holes at the detection points using a flexible drilling device to detect the pipeline body; collecting drilling data and detection data associated with the pipeline body during the detection process; fitting and reconstructing the pipeline body cross-section at the detection cross-section based on the detection data of a single detection cross-section to form a pipeline cross-section model; and forming a complete pipeline spatial model and detection result report by linking and fitting the pipeline cross-section models of multiple detection cross-sections.

[0006] This invention provides a method for accurately locating large-diameter rainwater pipelines. By standardizing well reference positioning, quantitatively laying out detection sections and points, non-destructive drilling with flexible drill bits, and multi-section fitting and restoration, the method achieves accurate detection of large-diameter rainwater pipelines. Without damaging existing pipelines, it can accurately obtain all parameters of the pipeline, including plane coordinates, spatial direction, burial depth and elevation, and pipe diameter, thereby improving detection accuracy and ensuring the reliability of detection results.

[0007] A further improvement of the detection method for accurately locating large-diameter rainwater pipelines in this invention is that the step of obtaining the accurate coordinates of the ground rainwater wells in the site and forming a pipeline detection benchmark system includes: using a high-precision GNSS measuring device to accurately measure the wellhead plane coordinates and wellhead elevation of the rainwater wells, and recording the well location number and benchmark data.

[0008] A further improvement of the detection method for accurately locating large-diameter rainwater pipelines in this invention is that the pipeline body being drilled at the detection point using a flexible drilling device includes: setting up a mud pool around the detection point; and connecting the mud pool to the flexible drilling device through a circulation pipeline to provide mud wall protection for drilling operations.

[0009] A further improvement of the detection method for accurately locating large-diameter rainwater pipelines in this invention is that the step of drilling and detecting the pipeline body at the detection point using a flexible drilling device includes: when none of the multiple detection points set at the same detection end face have touched the pipeline body, a first densified detection point is added within the detection section at that location until the pipeline body is captured.

[0010] A further improvement of the detection method for accurately locating large-diameter rainwater pipelines in this invention is that the step of fitting and reconstructing the pipeline body cross-section at the detection section based on the detection data of a single detection section to form a pipeline cross-section model includes: combining the detection data of multiple detection points set at the same detection section, fitting and calculating the center coordinates, pipe diameter, and bottom and top elevations of the pipeline body cross-section at the detection section to form complete pipeline cross-section parameters.

[0011] A further improvement of the detection method for accurate positioning of large-diameter rainwater pipelines in this invention is that the process of fitting and restoring the pipeline body cross-section at the detection section based on the detection data of a single detection section to form a pipeline cross-section model further includes: if the detection point data cannot be fitted to form a complete pipeline cross-section, initiating a supplementary measurement process until a complete cross-section of the pipeline body is formed.

[0012] A further improvement of the detection method for accurately locating large-diameter rainwater pipelines in this invention is that, if the detection point data cannot be fitted to form a complete pipeline cross-section, the supplementary detection process includes: adding a second densified detection point within the detection cross-section; drilling holes at the second densified detection point to detect and collect detection data until the lateral boundaries of the pipeline body are completely captured; and re-fitting and calculating the cross-sectional parameters of the pipeline body based on the detection data.

[0013] This invention discloses a detection system for precise positioning of large-diameter rainwater pipelines, comprising: a well positioning module connected to a high-precision GNSS measuring device, used to collect well location numbers and reference data of rainwater wells; a data processing module connected to the well positioning module, used to process the reference data to obtain a predicted pipeline route, and obtain multiple equally spaced detection cross-sections based on the predicted pipeline route, and further obtain detection points in the detection cross-sections; a borehole detection module connected to the data processing module, used to drill boreholes at the set detection points to detect the pipeline body, and obtain detection data associated with the borehole data and the pipeline body; a cross-section fitting and restoration module connected to the borehole detection module, used to process the detection data to obtain a pipeline cross-section model, and obtain a complete pipeline spatial model and detection result report based on the pipeline cross-section model; and a supplementary measurement and verification module connected to the cross-section fitting and restoration module, used to perform additional measurements at detection cross-sections where a complete pipeline cross-section model cannot be fitted until a complete pipeline cross-section model and the pipeline spatial model are obtained.

[0014] The present invention discloses an electronic device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described method for accurately locating large-diameter rainwater pipelines.

[0015] The present invention discloses a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the above-described method for accurately locating large-diameter rainwater pipelines. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating a detection method for accurately locating large-diameter rainwater pipelines according to the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the rainwater well and the detection section of the present invention.

[0018] Figure 3 This is a perspective view of borehole detection within multiple detection sections according to the present invention.

[0019] Figure 4 This is a flowchart illustrating step S110 of the present invention.

[0020] Figure 5 This is a flowchart illustrating step S140 of the present invention.

[0021] Figure 6 This is a schematic diagram of the mud pit setup of the present invention.

[0022] Figure 7 This is another schematic diagram of step S140 of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of the first encryption detection point of the present invention.

[0024] Figure 9 This is a flowchart illustrating step S160 of the present invention.

[0025] Figure 10 This is another schematic diagram of step S160 of the present invention.

[0026] Figure 11 This is a flowchart illustrating step S162 of the present invention.

[0027] Figure 12 This is a schematic diagram of the detection method for accurately locating large-diameter rainwater pipelines according to the present invention.

[0028] Figure 13 This is a schematic diagram of the structure of the electronic device of the present invention.

[0029] In the diagram: 1. Rainwater well; 2. Detection section; 3. Flexible drill bit; 4. Drilling equipment; 5. Detection point; 6. Pipeline body; 7. Mud pit; 8. First densified detection point; 9. Retaining structure. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] See Figure 1 , Figure 2 and Figure 3 , Figure 1 The diagram shows a flowchart of a detection method for accurately locating large-diameter rainwater pipelines according to the present invention. Figure 2 This invention displays a schematic diagram of the structure of the rainwater well and the detection section. Figure 3 This invention displays a perspective view of borehole detection within multiple detection sections. The invention provides a detection method for accurately locating large-diameter stormwater pipelines, comprising the following steps: Step S110: Obtain the precise coordinates of the ground rainwater well 1 within the site to form a pipeline detection benchmark system.

[0032] The process involves inspecting surface rainwater wells 1 within the site and identifying those associated with the target pipeline. The distance between adjacent rainwater wells 1 is controlled within 30m. The pipeline detection benchmark system is established, and only after acceptance can the next step proceed. Next, step S120 is executed: positioning and benchmark verification of the rainwater wells 1.

[0033] Execution step S120: Obtain the estimated pipeline route based on the pipeline detection benchmark system, and set detection sections 2 at equal intervals within the transverse range of the estimated pipeline route.

[0034] In this process, the estimated route of the pipeline is marked on the ground according to the rainwater well 1 associated with the target pipeline, and detection sections 2 are set at equal intervals on the estimated route of the pipeline. The size of the interval and the length of the detection sections 2 are set according to the actual construction requirements and are not specifically limited here. Then, step S130 is executed.

[0035] Step S130: Detection points 5 are set up at the detection section 2, and the coordinates of detection points 5 are located and numbered to form a detection grid.

[0036] Along the estimated pipeline route, a detection section 2 is set up every 10m. Within the transverse range of the estimated pipeline, each detection section 2 initially has four detection points 5. The transverse spacing of the detection points 5 is 1 / 3 to 1 / 4 of the estimated pipeline diameter, ensuring complete coverage of the entire estimated pipeline section. This avoids the problems of random point placement and blind spots inherent in traditional processes, guaranteeing the integrity of the entire pipeline detection. All detection points 5 are then located and numbered to complete the detection grid layout. The point spacing and coverage are verified, and only after acceptance can the next process begin. Next, step S140 is executed.

[0037] Step S140: Drill a hole at detection point 5 using a flexible drilling device 4 to detect the pipeline body 6.

[0038] Among them, the drilling detection equipment is assembled at the construction site and a flexible drill bit 3 is installed. The flexible drill bit 3 is equipped with a circular arc buffer structure design, which can automatically buffer and unload the force when it touches the pipeline body 6 during the drilling process. This fundamentally avoids the problem that traditional rigid drill bits are easy to scratch, penetrate, and damage the pipeline structure. It ensures the structural integrity and normal operation of the existing rainwater pipeline throughout the process and greatly reduces the safety risks of detection construction. Then, step S150 is executed.

[0039] Step S150: During the detection process, borehole data and detection data associated with the pipeline body 6 are collected.

[0040] In this process, a flexible drilling device 4 is used to drill holes at a single detection section 2 for detailed exploration and data acquisition. Following the established detection points 5, drilling is sequentially performed at four initial detection points 5 within each detection section 2. During drilling, the coordinates, drilling depth, and whether the pipeline body 6 is touched are recorded for each detection point 5, along with the depth data of the touched location. Drilling speed is strictly controlled during the drilling process, and mud slurry is used to ensure borehole stability and prevent collapse. After all points in a single detection section 2 are detected, the collected detection data are organized and their integrity is verified. Next, step S160 is executed.

[0041] Step S160: Fit and reconstruct the pipeline body 6 cross-section at the detection section 2 based on the detection data of a single detection section 2 to form a pipeline cross-section model.

[0042] Among them, based on the data collected from each detection point 5 within a single detection section 2, the pipeline body 6 section is fitted and calculated to restore the core parameters of the pipeline body 6 section, including the center plane coordinates, pipe diameter, pipe top elevation, and pipe bottom elevation, forming a pipeline section model. Then, step S170 is executed.

[0043] Step S170: By linking and fitting the pipeline cross-section models of multiple detection sections 2, a complete pipeline spatial model and detection results report are formed.

[0044] Based on the precise pipeline parameters of all 10m spacing detection sections 2, the overall spatial orientation, plane coordinates, burial depth and elevation and pipe diameter of the ultra-large diameter rainwater pipeline are restored by the linkage fitting of coordinate, elevation and pipe diameter data of multiple detection sections 2. A complete pipeline spatial model and detection results report are formed, providing accurate basic data for pipeline protection in subsequent foundation pit construction, and completing the precise detection and construction of the entire rainwater pipeline.

[0045] See Figure 4 The diagram shows a flowchart of step S110 of the present invention. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, wherein step S110 includes: Step S111: Use a high-precision GNSS measuring device to accurately measure the wellhead plane coordinates and wellhead elevation of rainwater well 1, and record the well location number and reference data.

[0046] Among them, high-precision GNSS measuring equipment is used to accurately measure the wellhead plane coordinates and wellhead elevation of each rainwater well 1, and record the well location number and benchmark data. The operation is simple and the verification efficiency is high.

[0047] See Figure 5 and Figure 6 , Figure 5 A flowchart of step S140 of the present invention is shown. Figure 6 A schematic diagram of the mud pit setup of the present invention is shown. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, step S140 including: Step S141: Set up mud pits 7 around the detection point 5.

[0048] Among them, the rainwater well 1 and the pipeline body 6 are generally located close to the building. Before the construction of the mud pit 7, an enclosure structure 9 needs to be set up around the building. The mud pit 7 is located outside the pipeline body 6 on the side away from the building. Then, step S142 is executed.

[0049] Step S142: Connect the mud tank 7 to the flexible drilling equipment 4 through the circulation pipeline to provide mud wall protection for drilling operations.

[0050] The system connects to the drilling rig via a circulation pipeline to provide mud for borehole construction and ensure borehole stability. Connecting the mud circulation pipeline and adjusting the drilling rig parameters ensures that when the drill bit touches the pipeline body 6 during drilling, the force is buffered and discharged, protecting the pipeline body 6.

[0051] See Figure 7 and Figure 8 , Figure 7 Another flowchart of step S140 of the present invention is shown. Figure 8 A schematic diagram of the structure of the first encrypted detection point of the present invention is shown. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, and step S140 further includes: Step S143: When multiple detection points 5 set at the same detection end face fail to detect the pipeline body 6, a first encrypted detection point 8 is added in the detection section 2 at that location until the pipeline body 6 is detected.

[0052] Among them, the distance between adjacent first encrypted detection points 8 does not exceed 1 / 5 of the estimated pipe diameter.

[0053] Among them, the borehole data collected at a single detection point 5 includes borehole coordinates, final borehole depth, and whether the pipeline body 6 was touched.

[0054] See Figure 9 The diagram shows a flowchart of step S160 of the present invention. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, step S160 including: Execution step S161: Combining the detection data of multiple detection points 5 set at the same detection section 2, the center coordinates, pipe diameter, and bottom and top elevations of the pipeline body 6 at the detection section 2 are fitted and calculated to form complete pipeline section parameters.

[0055] Among them, a complete pipeline cross-section model can be obtained through complete pipeline cross-section parameters, which can be widely applied to the detection and construction of various ultra-large diameter concrete and reinforced concrete rainwater pipelines. It is not limited by pipeline burial depth or site geological conditions and has a wide range of applications.

[0056] See Figure 10 This diagram illustrates another step S160 of the present invention. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, and step S160 further includes: Execution step S162: If the data from detection point 5 cannot be fitted to form a complete pipeline cross-section, start the supplementary measurement process until a complete cross-section of the pipeline body 6 is formed.

[0057] Among them, a closed-loop verification system of "detection-fitting-supplementary detection-refitting" is formed through the supplementary detection process to ensure the integrity of the pipeline cross-section model at two locations for each detection section, reduce the parameter deviation of pipeline direction and burial depth, and ensure the reliability of detection results.

[0058] See Figure 11 The diagram shows a flowchart of step S162 of the present invention. The present invention provides a detection method for accurately locating large-diameter rainwater pipelines, step S162 including: Step S1621: Add a second encrypted detection point 5 within the detection section 2.

[0059] Among them, the lateral spacing between adjacent second encrypted detection points 5 does not exceed 1 / 5 of the estimated pipe diameter, and then step S1622 is executed.

[0060] Step S1622: Drill holes at the second encrypted detection point 5 to detect and collect detection data until the lateral boundaries of the pipeline body 6 are fully captured.

[0061] In this process, the drilling and data acquisition of the second encrypted detection point 5 are completed sequentially until the lateral boundaries of the pipeline are fully captured. Then, step S1623 is executed.

[0062] Step S1623: Re-calculate the cross-sectional parameters of the pipeline body 6 based on the detection data.

[0063] Among these measures, the cross-sectional parameters of the pipeline body 6 at this cross-section were re-fitted and calculated to ensure the accuracy of the cross-sectional parameters and to guarantee the reliability of the detection results.

[0064] See Figure 12 This image shows a schematic diagram of a detection method for accurately locating large-diameter rainwater pipelines according to the present invention. The present invention provides a detection system for accurately locating large-diameter rainwater pipelines, comprising: The well positioning module 100, which is connected to a high-precision GNSS measuring device, is used to collect the well location number and reference data of the rainwater well 1.

[0065] Among them, the well positioning module is used to obtain the precise coordinates of the existing surface rainwater well 1 as a detection benchmark.

[0066] The data processing module 200, which is connected to the well positioning module, is used to process the reference data to obtain the pipeline prediction route line, and to obtain multiple equally spaced detection sections 2 based on the pipeline prediction route line, and then to obtain detection points 5 in the detection sections 2.

[0067] The data processing module lays out detection sections 2 along the pipeline at preset intervals, and each detection section 2 lays out detection points 5 according to preset rules to form a standardized detection grid.

[0068] The borehole detection module 300, which is connected to the data processing module, is used to drill a borehole at a set detection point 5 to detect the pipeline body 6 and obtain the borehole data and the detection data associated with the pipeline body 6.

[0069] The borehole detection module uses a drilling device 4 equipped with a flexible drill bit 3, combined with a mud circulation system, to complete the precise borehole detection of the detection point 5, avoiding damage to the existing pipeline body 6.

[0070] The cross-section fitting and restoration module 400, which is connected to the borehole detection module, is used to process the detection data to obtain a pipeline cross-section model, and to obtain a complete pipeline spatial model and detection results report based on the pipeline cross-section model.

[0071] The section fitting and restoration module uses the detection data of each detection point 5 on a single detection section 2 to fit and restore the coordinates, elevation, and pipe diameter parameters of the pipeline body 6 section within the detection section 2.

[0072] The supplementary measurement and verification module 500, which is connected to the cross-section fitting and restoration module, is used to perform densified supplementary measurements at the detection cross-section 2 where a complete pipeline cross-section model cannot be fitted, until a complete pipeline cross-section model and pipeline space model are obtained.

[0073] The supplementary verification module needs to add a second densified detection point 5 within the detection section 2 where the incomplete pipeline cross-section model is located. Drill holes at the second densified detection point 5 to detect and collect detection data until the lateral boundaries of the pipeline body 6 are completely captured. Then, refit and calculate the cross-sectional parameters of the pipeline body 6 to ensure accurate positioning of the entire pipeline section.

[0074] See Figure 13 The diagram shows a schematic representation of the structure of the electronic device of the present invention. The present invention provides an electronic device comprising: a memory 901, a processor 902, and a computer program stored in the memory 901 and executable on the processor 902. When the processor 902 executes the program, it implements the detection method for accurately locating large-diameter rainwater pipelines provided in the above embodiments.

[0075] Furthermore, the electronic device also includes a communication interface 903 for communication between the memory 901 and the processor 902.

[0076] The memory 901 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0077] If the memory 901, processor 902, and communication interface 903 are implemented independently, they can be interconnected via a bus to communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0078] Optionally, in a specific implementation, if the memory 901, processor 902, and communication interface 903 are integrated on a single chip, then the memory 901, processor 902, and communication interface 903 can communicate with each other through an internal interface.

[0079] The processor 902 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present invention.

[0080] The present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the detection method for accurately locating large-diameter rainwater pipelines provided in the above embodiments.

[0081] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A detection method for accurately locating large-diameter rainwater pipelines, characterized in that, Includes the following steps: Obtain the precise coordinates of ground-level rainwater wells within the site to form a pipeline detection benchmark system; The pipeline's estimated route is obtained based on the pipeline detection benchmark system, and detection sections are set at equal intervals within the transverse range of the estimated pipeline route. Detection points are set up at the detection section, and the detection points are located and numbered to form a detection grid; The pipeline body is drilled at the detection point using a flexible drilling device. During the exploration process, borehole data and exploration data associated with the pipeline body are collected; The pipeline body cross-section at the detection section is reconstructed by fitting the detection data of a single detection section to form a pipeline cross-section model; By linking and fitting the pipeline cross-section models of multiple detection sections, a complete pipeline spatial model and detection results report are formed.

2. The detection method for accurately locating large-diameter rainwater pipelines according to claim 1, characterized in that, The process of obtaining the precise coordinates of surface rainwater wells within the site to form a pipeline detection benchmark system includes: The plane coordinates and elevation of the wellhead of the rainwater well were accurately measured using high-precision GNSS measuring equipment, and the well location number and reference data were recorded.

3. The detection method for accurately locating large-diameter rainwater pipelines according to claim 1, characterized in that, The pipeline body for drilling and detection at the detection point using a flexible drilling device includes: A mud pit was set up around the detection point; The mud pit is connected to the flexible drilling equipment through a circulation pipeline to provide mud wall protection for drilling operations.

4. The detection method for accurately locating large-diameter rainwater pipelines according to claim 1, characterized in that, The pipeline body for drilling and detection at the detection point using a flexible drilling device includes: A mud pit was set up around the detection point; The mud pit is connected to the flexible drilling equipment through a circulation pipeline to provide mud wall protection for drilling operations.

5. The detection method for accurately locating large-diameter rainwater pipelines according to claim 1, characterized in that, The step of fitting and reconstructing the pipeline body cross-section at the detection cross-section based on the detection data of a single detection cross-section to form a pipeline cross-section model includes: By combining the detection data from multiple detection points set at the same detection section, the center coordinates, pipe diameter, and bottom and top elevations of the pipeline body section at the detection section are calculated to form complete pipeline section parameters.

6. The detection method for accurately locating large-diameter rainwater pipelines according to claim 5, characterized in that, The step of fitting and reconstructing the pipeline body cross-section at the detection cross-section based on the detection data of a single detection cross-section to form a pipeline cross-section model further includes: If the data from the detection points cannot be fitted to form a complete pipeline cross-section, a supplementary measurement process is initiated until a complete cross-section of the pipeline body is formed.

7. The detection method for accurately locating large-diameter rainwater pipelines according to claim 6, characterized in that, If the detection point data cannot be fitted to form a complete pipeline cross-section, the supplementary measurement process includes: A second encrypted detection point is added within the detection cross section; Drill holes at the second encrypted detection point to detect and collect detection data until the lateral boundaries of the pipeline body are fully captured. The cross-sectional parameters of the pipeline body are recalculated based on the detection data.

8. A detection system for precise positioning of large-diameter rainwater pipelines, characterized in that, include: The well positioning module, which is connected to a high-precision GNSS measuring device, is used to collect the well location number and reference data of rainwater wells; The data processing module connected to the well positioning module is used to process the reference data to obtain the pipeline estimated route line, and obtain multiple equally spaced detection sections based on the pipeline estimated route line, and further obtain detection points in the detection sections. The drilling detection module connected to the data processing module is used to drill a hole at the set detection point to detect the pipeline body and obtain drilling data and detection data associated with the pipeline body. The cross-section fitting and restoration module connected to the borehole detection module is used to process the detection data to obtain a pipeline cross-section model, and to obtain a complete pipeline space model and detection result report based on the pipeline cross-section model; The supplementary measurement and verification module, which is connected to the cross-section fitting and restoration module, is used to perform densified supplementary measurements at the detection cross-sections where a complete pipeline cross-section model cannot be fitted, until a complete pipeline cross-section model and pipeline space model are obtained.

9. An electronic device, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a detection method for accurately locating large-diameter rainwater pipelines as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement a detection method for accurately locating large-diameter rainwater pipelines as described in any one of claims 1-7.

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