Underground pipeline collision tolerance detection method

Abstract

The invention provides an underground pipeline collision tolerance detection method which comprises the following steps: determining types of pipe points at two ends of a pipe section of each underground pipeline, and dividing all the pipe sections into a first pipe section, a second pipe section and a third pipe section according to the types of the pipe points; the probing burial depth tolerance of the pipe section is calculated according to the probing burial depth maximum tolerance corresponding to the types of the pipe points at the two ends of the pipe section; according to the measurement elevation tolerance and the probing burial depth tolerance, the elevation burial depth tolerance of each pipe section under different burial depths is obtained; calculating the probing plane tolerance of the pipe section according to the probing plane maximum tolerance corresponding to the types of the pipe points at the two ends of the pipe section; and taking the sum of the elevation burial depth tolerance and the measurement plane tolerance of each pipe section under different burial depths as the collision tolerance of the underground pipeline under the corresponding burial depth. According to the method, the problems of how to balance the contradiction between the measurement precision and the actual operation and how to reasonably quantify the pipeline collision tolerance to adapt to the error in the actual detection in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline collision detection, and in particular to an underground pipeline collision tolerance detection method. Background Art

[0002] Underground pipelines are an important part of urban infrastructure, responsible for key tasks such as the transportation of materials and energy, the discharge of wastewater and waste, and the transmission of electricity and signals. Accurate detection and modeling of these pipelines is the basis for ensuring the safety and efficiency of urban operations. At present, instruments such as ground penetrating radar and electromagnetic pipeline locators are widely used to detect the location and status of underground pipelines. However, these instruments may cause collisions between pipelines during the detection process, which not only affects the accuracy of pipeline data, but also creates obstacles for subsequent three-dimensional visualization modeling.

[0003] In the quality control link of underground pipeline detection results, collision inspection is an important part of quality inspection work. The current quality inspection standards usually use "zero" collision as the qualification standard, but this requirement conflicts with the measurement deviation caused by the geophysical methods and instruments in the actual detection process. Especially when detecting deeply buried and hidden pipelines, due to environmental complexity and technical limitations, the measurement error is often large, making the "zero" collision requirement difficult to achieve in actual operation. Therefore, in the actual underground pipeline detection work, it is necessary to determine the pipeline collision tolerance, that is, the maximum allowable deviation of the collision between two pipe sections in space. In order to balance the contradiction between measurement accuracy and actual operation, and reasonably quantify the tolerance of pipeline collision to adapt to the errors in actual detection, an underground pipeline collision tolerance detection method is urgently needed to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for detecting underground pipeline collision tolerances, which solves the problem in the prior art of how to reasonably quantify the tolerances of pipeline collisions to adapt to errors in actual detection.

[0005] An embodiment of the present invention provides a method for detecting underground pipeline collision tolerance, the method comprising:

[0006] Determine the types of pipe points at both ends of each underground pipeline segment, and divide all pipeline segments into a first pipeline segment, a second pipeline segment, and a third pipeline segment according to the types of the pipe points;

[0007] Obtaining the measurement elevation tolerance and the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection depth tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment;

[0008] According to the measured elevation tolerance and the detected buried depth tolerance, the elevation and buried depth tolerance of each pipe section at different buried depths are calculated;

[0009] Obtaining the measurement plane tolerance and the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection plane tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment;

[0010] According to the measurement plane tolerance and the exploration plane tolerance, the measurement plane tolerance of each pipe section at different buried depths is calculated;

[0011] The sum of the elevation burial depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is used as the collision tolerance of the underground pipeline at the corresponding burial depth.

[0012] Preferably, the types of pipe points at both ends of the pipe section of each underground pipeline include concealed points and obvious points.

[0013] Preferably, the type of the first pipe segment is obvious point-obvious point, the type of the second pipe segment is obvious point-hidden point, and the type of the third pipe segment is hidden point-hidden point.

[0014] Preferably, the maximum limit difference of the detection burial depth corresponding to the pipe point type at both ends of the pipe segment is used to calculate the detection burial depth limit difference of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is:

[0015]

[0016] Among them, δ th It represents the detection burial depth limit, and h represents the burial depth of the center of the hidden point pipeline.

[0017] Preferably, the maximum limit difference of the detection plane corresponding to the type of the pipe points at both ends of the pipe segment is used to calculate the detection plane limit difference of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is:

[0018]

[0019] Among them, δ ts It represents the detection plane tolerance, and h represents the buried depth of the hidden point pipeline center.

[0020] Preferably, the elevation and burial depth tolerances of each pipe section at different burial depths are calculated based on the measured elevation tolerances and the detected burial depth tolerances:

[0021] l h =δ th +δ ch ;

[0022] Among them, l h Indicates the elevation depth tolerance, δ th Denotes the detection depth tolerance, δ ch Indicates the measurement elevation tolerance.

[0023] Preferably, the measurement plane tolerance of each pipe section at different buried depths is calculated based on the measurement plane tolerance and the exploration plane tolerance:

[0024] l s =δ ts +δ cs ;

[0025] Among them, l s Indicates the measurement plane tolerance, δ ts represents the detection plane tolerance, δ cs Indicates the measurement plane tolerance.

[0026] Preferably, the sum of the elevation burial depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is used as the collision tolerance of the underground pipeline at the corresponding burial depth:

[0027]

[0028] L represents the collision tolerance of underground pipelines, l n Indicates the elevation depth tolerance, l s Indicates the measurement plane tolerance.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] According to the different types of pipe points at both ends of the pipe segments of underground pipelines, the pipe segments are divided into three types, and the elevation burial depth tolerance and measurement plane tolerance of each pipe segment at different burial depths are detected, so as to obtain the collision tolerance of the underground pipeline at the corresponding burial depth, and finally obtain the collision tolerance results between each pipe segment collision combination at different burial depths. Therefore, the underground pipeline collision tolerance detection method proposed by the present invention can more accurately guide the construction and maintenance of underground pipelines by distinguishing the hidden points and obvious points of underground pipelines, and calculating the collision tolerance between different pipe segments according to these pipeline types, and balance the contradiction between measurement accuracy and actual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flowchart of the steps of an underground pipeline collision tolerance detection method proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0033] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0034] At present, collision inspection is an important part of the quality control of underground pipeline detection results. The current quality inspection standards usually use "zero" collision as the qualification standard, but this requirement conflicts with the measurement deviation caused by the geophysical methods and instruments in the actual detection process. Especially when detecting deeply buried and hidden pipelines, due to environmental complexity and technical limitations, the measurement error is often large, making the "zero" collision requirement difficult to achieve in actual operation. Therefore, in the actual underground pipeline detection work, it is necessary to determine the pipeline collision tolerance, that is, the maximum allowable deviation between the actual position of the pipeline and the detection result, in order to balance the contradiction between measurement accuracy and actual operation.

[0035] Based on the above problems, the present application proposes a method for detecting collision limits of underground pipelines. According to the different types of pipe points at both ends of the pipe sections of underground pipelines, the pipe sections are divided into three types. The elevation burial depth limit and measurement plane limit of each pipe section at different burial depths are detected, so as to obtain the collision limit of the underground pipeline at the corresponding burial depth.

[0036] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a method for detecting underground pipeline collision tolerance, the method comprising:

[0038] Determine the types of pipe points at both ends of each underground pipeline segment, and divide all pipeline segments into a first pipeline segment, a second pipeline segment, and a third pipeline segment according to the types of the pipe points;

[0039] Obtaining the measurement elevation tolerance and the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection depth tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment;

[0040] According to the measured elevation tolerance and the detected buried depth tolerance, the elevation and buried depth tolerance of each pipe section at different buried depths are calculated;

[0041] Obtaining the measurement plane tolerance and the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection plane tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment;

[0042] According to the measurement plane tolerance and the exploration plane tolerance, the measurement plane tolerance of each pipe section at different buried depths is calculated;

[0043] The sum of the elevation burial depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is used as the collision tolerance of the underground pipeline at the corresponding burial depth.

[0044] In this embodiment, the engineering team first conducts a detailed survey of the pipe points at both ends of the pipe sections of all underground pipelines to determine the pipe point types and divide the pipe sections into three corresponding types, and then performs corresponding detection calculations to obtain the collision tolerances of the underground pipelines at different burial depths.

[0045] It should be noted that in this embodiment, the technician can refer to technical manuals or specifications such as "Technical Specifications for Urban Underground Pipeline Detection" CJJ61-2017 to determine the parameters such as the measurement elevation tolerance, measurement plane tolerance, and the maximum detection depth tolerance and detection plane tolerance corresponding to the pipe point types at both ends of the pipe section. In the specific implementation process, the measurement elevation tolerance is determined to be a maximum value of 3cm, and the measurement plane tolerance is determined to be a maximum value of 5cm. Through the method proposed in the present invention, during the construction and maintenance of underground pipelines, collisions between pipelines can be avoided through accurate tolerance calculations, ensuring construction safety and long-term stable operation of pipelines, and effectively preventing and reducing accidents and losses caused by pipeline collisions.

[0046] Preferably, the types of pipe points at both ends of the pipe section of each underground pipeline include concealed points and obvious points.

[0047] Preferably, the type of the first pipe segment is obvious point-obvious point, the type of the second pipe segment is obvious point-hidden point, and the type of the third pipe segment is hidden point-hidden point.

[0048] In this embodiment, hidden points refer to pipe points that are not easily observed directly on the ground and may be covered by buildings, roads or other obstacles. Obvious points refer to pipe points that are easily identified and accessed on the ground, which are usually not blocked and can be directly observed and measured. In the embodiment, the engineering team first surveys the pipe points at both ends of the pipe section of the underground pipeline to determine which are hidden points and which are obvious points. According to the type of pipe points, the pipe section is divided into the first pipe section (both ends are obvious points), the second pipe section (one end is a hidden point and the other end is an obvious point), and the third pipe section (both ends are hidden points). By distinguishing between hidden points and obvious points and calculating different detection tolerances according to these types, the construction and maintenance of underground pipelines can be guided more accurately.

[0049] Preferably, the maximum limit difference of the exploration burial depth corresponding to the pipe point types at both ends of the pipe segment is used to calculate the exploration burial depth limit difference of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is:

[0050]

[0051] Among them, δ th It represents the detection burial depth limit, and h represents the burial depth of the center of the hidden point pipeline.

[0052] In this embodiment, the maximum limit difference of the detection burial depth corresponding to the obvious point of the underground pipeline section is equal to 5 cm, and the maximum limit difference of the detection burial depth corresponding to the hidden point of the pipeline section is equal to 0.15hcm. According to the different depths of the hidden point pipeline center burial depth h, the detection burial depth limit differences corresponding to the first pipe section, the second pipe section and the third pipe section at different burial depths are obtained.

[0053] Preferably, the maximum limit difference of the detection plane corresponding to the type of the pipe points at both ends of the pipe segment is used to calculate the detection plane limit difference of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is:

[0054]

[0055] Among them, δ ts It represents the detection plane tolerance, and h represents the buried depth of the hidden point pipeline center.

[0056] In this embodiment, the maximum limit error of the exploration plane corresponding to the obvious point of the underground pipeline section is 0 cm, and the maximum limit error of the exploration plane corresponding to the hidden point of the section is 0.1hcm. According to the different depths of the hidden point pipeline center burial depth h, the exploration plane limit errors corresponding to the first section, the second section and the third section at different burial depths are obtained.

[0057] Preferably, the elevation and burial depth tolerances of each pipe section at different burial depths are calculated based on the measured elevation tolerances and the detected burial depth tolerances:

[0058] l h =δth +δ ch ;

[0059] Among them, l h Indicates the elevation depth tolerance, δ th Denotes the detection depth tolerance, δ ch Indicates the measurement elevation tolerance.

[0060] According to the measurement plane tolerance and the exploration plane tolerance, the measurement plane tolerance of each pipe section at different buried depths is calculated:

[0061] l s =δ ts +δ cs ;

[0062] Among them, l s Indicates the measurement plane tolerance, δ ts represents the detection plane tolerance, δ cs Indicates the measurement plane tolerance.

[0063] In this embodiment, the elevation depth tolerance is composed of the detection depth tolerance and the measurement elevation tolerance, and the plane depth tolerance is composed of the detection plane tolerance and the measurement plane tolerance. Finally, the sum of the elevation depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is calculated as the collision tolerance L of the underground pipeline at the corresponding burial depth;

[0064] In another specific implementation process, pipeline collision refers to the collision between two pipe segments in space. Since each pipe segment has three situations: "obvious point-obvious point", "obvious point-hidden point" and "hidden point-hidden point", the collision between all pipe segments, the first pipe segment l1, the second pipe segment l2 and the third pipe segment l3, can be divided into the following six collision situations according to the combination of obvious points or hidden points at both ends:

[0065] ①l3: hidden point-hidden point, l3': hidden point-hidden point;

[0066] ②l3: hidden point-hidden point, l2: obvious point-hidden point;

[0067] ③l3': hidden point-hidden point, l1: obvious point-obvious point;

[0068] ④l2: obvious point-hidden point, l2': obvious point-hidden point;

[0069] ⑤l2': obvious point-hidden point, l1: obvious point-obvious point;

[0070] ⑥l1: obvious point-obvious point, l1': obvious point-obvious point.

[0071] According to the collision conditions between the above six pipelines, the collision tolerance between each pipeline segment collision combination at different buried depths can be calculated, and the calculation table of underground pipeline collision tolerance is formed according to the calculation results:

[0072] Table 1 Collision tolerance calculation table for L3 pipeline (hidden point-hidden point) and L3' pipeline (hidden point-hidden point)

[0073]

[0074] Table 2 Collision tolerance calculation table for L3 pipeline (hidden point-hidden point) and L2 pipeline (obvious point-hidden point)

[0075]

[0076]

[0077] Table 3 Collision tolerance calculation table for L3' pipeline (hidden point-hidden point) and L1 pipeline (obvious point-obvious point)

[0078]

[0079] Table 4 Collision tolerance calculation table for L2 pipeline (obvious point-hidden point) and L2' pipeline (obvious point-hidden point)

[0080]

[0081] Table 5 Collision tolerance calculation table for L2' pipeline (obvious point - hidden point) and L1 pipeline (obvious point - obvious point)

[0082]

[0083] Table 6 Calculation table of collision tolerance between L1 pipeline (obvious point - obvious point) and L1' pipeline (obvious point - obvious point)

[0084]

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for detecting underground pipeline collision tolerance, characterized in that: The method comprises: Determine the types of pipe points at both ends of each underground pipeline segment, and divide all pipeline segments into a first pipeline segment, a second pipeline segment, and a third pipeline segment according to the types of the pipe points; Obtaining the measurement elevation tolerance and the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection depth tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection depth tolerance corresponding to the pipe point types at both ends of the pipe segment; According to the measured elevation tolerance and the detected buried depth tolerance, the elevation and buried depth tolerance of each pipe section at different buried depths are calculated; Obtaining the measurement plane tolerance and the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment, and calculating the detection plane tolerances of the first pipe segment, the second pipe segment, and the third pipe segment according to the maximum detection plane tolerance corresponding to the pipe point types at both ends of the pipe segment; According to the measurement plane tolerance and the exploration plane tolerance, the measurement plane tolerance of each pipe section at different buried depths is calculated; The sum of the elevation burial depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is used as the collision tolerance of the underground pipeline at the corresponding burial depth.

2. The underground pipeline collision tolerance detection method according to claim 1 is characterized in that: The types of pipe points at both ends of the pipe section of each underground pipeline include concealed points and obvious points.

3. The underground pipeline collision tolerance detection method according to claim 1 is characterized in that: The type of the first pipe segment is obvious point-obvious point, the type of the second pipe segment is obvious point-hidden point, and the type of the third pipe segment is hidden point-hidden point.

4. The underground pipeline collision tolerance detection method according to claim 1 is characterized in that: The maximum limit difference of the exploration burial depth corresponding to the pipe point type at both ends of the pipe segment is used to calculate the limit difference of the exploration burial depth of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is: Among them, δ th It represents the detection burial depth limit, and h represents the burial depth of the center of the hidden point pipeline.

5. The underground pipeline collision tolerance detection method according to claim 1 is characterized in that: The maximum limit difference of the detection plane corresponding to the type of the pipe points at both ends of the pipe segment is used to calculate the detection plane limit difference of the first pipe segment, the second pipe segment and the third pipe segment. The specific formula is: Among them, δ ts It represents the detection plane tolerance, and h represents the buried depth of the hidden point pipeline center.

6. The underground pipeline collision tolerance detection method according to claim 4 is characterized in that: According to the measured elevation tolerance and the detected buried depth tolerance, the elevation and buried depth tolerance of each pipe section at different buried depths is calculated: l h =d th +d ch ; Among them, l h Indicates the elevation depth tolerance, δ th Denotes the detection depth tolerance, δ ch Indicates the measurement elevation tolerance.

7. The underground pipeline collision tolerance detection method according to claim 5 is characterized in that: According to the measurement plane tolerance and the exploration plane tolerance, the measurement plane tolerance of each pipe section at different buried depths is calculated: l s =d ts +d cs ; Among them, l s Indicates the measurement plane tolerance, δ ts represents the detection plane tolerance, δ cs Indicates the measurement plane tolerance.

8. The underground pipeline collision tolerance detection method according to claim 1 is characterized in that: The sum of the elevation depth tolerance and the measurement plane tolerance of each pipe section at different burial depths is taken as the collision tolerance of the underground pipeline at the corresponding burial depth: L represents the collision tolerance of underground pipelines, l h Indicates the elevation depth tolerance, l s Indicates the measurement plane tolerance.

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