Method and device for generating three-dimensional underground pipeline model based on nonlinear interpolation fitting

Abstract

The present invention discloses a method and device for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, the method comprising: obtaining coordinate information and type information of underground pipeline points in a preset region based on an underground pipeline GIS data platform; obtaining endpoint types and three-dimensional structural information of several straight pipe sections in a preset region through a nonlinear difference fitting method based on the coordinate information and type information of the underground pipeline points; inserting a connection point model at the connection points at both ends of each straight pipe section according to the endpoint type, and generating a three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe section. The three-dimensional structural information of the underground pipeline is accurately simulated through the nonlinear difference fitting method, including the detailed features of the endpoint type and the connection point model, thereby enhancing the practicality and reliability of the model; reducing the complexity of manual operation and reducing errors, and providing powerful data support and visualization tools for the planning, design, construction and management of underground pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipeline models, and in particular to a method and device for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting. Background Art

[0002] At present, the geographic information system of urban underground pipelines is relatively complete. However, since the collection of underground pipeline data has many errors, especially the errors of terrain points in plane and elevation, it is of great significance to correct the underground pipeline points and obtain an accurate three-dimensional model of the underground pipeline points.

[0003] The existing method for automatically generating underground pipeline three-dimensional models based on pipeline GIS data has the following problems in its calculation method: first, the underground pipeline three-dimensional model is calculated and generated using plane coordinates and elevation information, which has the disadvantage that it is difficult to accurately reflect the shape of the underground pipeline, especially for situations where the elevation error of the terrain is relatively large and the pipeline direction is curved, the error is relatively large; second, the underground pipeline three-dimensional calculation method using a hyperbolic algorithm, especially the method for generating underground pipeline three-dimensional models based on the underground pipeline GIS data platform, has the disadvantage that the calculation model does not consider the influence of the terrain on the plane and elevation, and the points generated at the calculation point will deviate from the center line of the pipeline, resulting in the pipeline calculation model being unable to completely cover the original underground pipeline.

[0004] With the progress of urbanization, urban underground pipelines are complex and numerous. In order to effectively monitor the buried depth of underground pipelines and dynamically analyze the deformation and settlement of underground pipelines, it is necessary to construct a three-dimensional model of the underground pipelines. In the existing GIS data, based on pipeline data points and elevation information, the underground pipeline model is constructed through the interpolation curve algorithm, which can achieve good interpolation in the plane, but the interpolation point is offset from the original pipeline, the elevation information error is large, and the pipeline model is not accurate enough. The algorithm for automatic generation of pipe points based on underground pipeline point information can realize the interpolation construction of the model, but the algorithm only considers the elevation information, and does not consider the impact of the terrain surface enough. Therefore, the calculated results cannot accurately reflect the overall situation of the underground pipelines. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a method and device for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, which accurately simulates the three-dimensional structural information of the underground pipeline, including the detailed characteristics of the endpoint type and the connection point model, through a nonlinear difference fitting method, thereby enhancing the practicality and reliability of the model; it also reduces the complexity of manual operation and reduces errors, and provides powerful data support and visualization tools for the planning, design, construction and management of underground pipelines, thereby improving the quality and efficiency of the entire underground pipeline project.

[0006] To solve the above technical problems, a first aspect of an embodiment of the present invention provides a method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, comprising the following steps:

[0007] Based on the underground pipeline GIS data platform, obtain the coordinate information and type information of underground pipeline points in the preset area;

[0008] Based on the coordinate information and type information of the underground pipeline points, the endpoint types and three-dimensional structure information of several straight pipe sections in the preset area are obtained by a nonlinear difference fitting method;

[0009] A connection point model is inserted into the connection points at both ends of each straight pipe segment according to the endpoint type, and the three-dimensional underground pipeline model is generated in combination with the three-dimensional structural information of the straight pipe segment.

[0010] Furthermore, based on the coordinate information and type information of the underground pipeline points, the endpoint types and three-dimensional structure information of several straight pipe sections in the preset area are obtained by a nonlinear difference fitting method, including:

[0011] Based on the coordinate information and type information of the underground pipeline point, a plurality of straight pipe sections in the preset area are obtained by an interpolation algorithm;

[0012] Based on the preset connection point type, determine the endpoint type of the connection points at both ends of each straight pipe segment;

[0013] According to the endpoint types and coordinate information of the connection points at both ends of the straight pipe section, a plurality of intermediate elevation fitting points of each straight pipe section are obtained based on a hyperbolic tangent function;

[0014] The three-dimensional structural information of each straight pipe section is constructed by using the two end connection points of each straight pipe section and a plurality of intermediate elevation fitting points. The three-dimensional structural information includes: diameter, length and curvature.

[0015] Furthermore, the endpoint types include: branch pipe sections, wellhead pipe points and tee pipe points.

[0016] Furthermore, the calculation formula for the elevation value of the intermediate elevation fitting point z(t) is:

[0017]

[0018] Among them, z 0 and z 1 is the actual elevation value of the two endpoints of the straight pipe section, L is the straight-line distance value between the two endpoints of the straight pipe section, the numerical range of t is 0≤t≤L, and the number of selected t is determined according to the number of intermediate elevation fitting points, ω is the elevation change width coefficient, and the larger the ω value, the smoother the elevation change.

[0019] Furthermore, after obtaining the endpoint types and three-dimensional structure information of the plurality of straight pipe sections in the preset region, the method further includes:

[0020] Determine whether the actual elevation value of the connection point of the endpoint of the straight pipe section is within the preset range of the endpoint elevation design value;

[0021] If so, generating the three-dimensional underground pipeline model based on the actual elevation value;

[0022] If not, the three-dimensional underground pipeline model is generated based on the endpoint elevation design value.

[0023] Furthermore, the generating of the three-dimensional underground pipeline model based on the endpoint elevation design value includes:

[0024] When the actual elevation value of the connection point of the endpoint of the straight pipe section is greater than the upper limit value of the preset range of the endpoint elevation design value, the three-dimensional underground pipeline model is generated based on the upper limit value of the preset range of the endpoint elevation design value;

[0025] When the actual elevation value of the connection point of the endpoint of the straight pipe section is less than the lower limit value of the preset range of the endpoint elevation design value, the three-dimensional underground pipeline model is generated based on the lower limit value of the preset range of the endpoint elevation design value.

[0026] Furthermore, the coordinate information of the underground pipeline point includes: pipe bottom elevation, pipe top elevation and pipe diameter;

[0027] The types of underground pipeline points include: wells, wells, valves, meters, tees, reducers and / or connecting pipes.

[0028] Accordingly, a second aspect of an embodiment of the present invention provides a three-dimensional underground pipeline model generation device based on nonlinear interpolation fitting, comprising:

[0029] A data acquisition module, which is used to obtain the coordinate information and type information of underground pipeline points in a preset area based on the underground pipeline GIS data platform;

[0030] A straight pipe segment generation module, which is used to obtain the endpoint type and three-dimensional structure information of several straight pipe segments in the preset area through a nonlinear difference fitting method based on the coordinate information and type information of the underground pipeline points;

[0031] The model generation module is used to insert a connection point model at the connection points at both ends of each straight pipe segment according to the endpoint type, and generate the three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe segment.

[0032] Correspondingly, the third aspect of an embodiment of the present invention also provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the above-mentioned three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting.

[0033] In addition, the fourth aspect of the embodiment of the present invention further provides a computer-readable storage medium on which computer instructions are stored. When the instructions are executed by a processor, the above-mentioned three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting is implemented.

[0034] The above technical solution of the embodiment of the present invention has the following beneficial technical effects:

[0035] 1. Accurately simulate the three-dimensional structural information of underground pipelines through nonlinear difference fitting method, including detailed characteristics of endpoint types and connection point models, which enhances the practicality and reliability of the model;

[0036] 2. It reduces the complexity of manual operations and reduces errors, providing powerful data support and visualization tools for the planning, design, construction and management of underground pipelines, and improving the quality and efficiency of the entire underground pipeline project. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of a method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting provided by an embodiment of the present invention;

[0038] Figure 2 It is a module block diagram of a three-dimensional underground pipeline model generation device based on nonlinear interpolation fitting provided by an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. Data acquisition module, 2. Straight pipe section generation module, 3. Model generation module. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0042] Please refer to Figure 1 A first aspect of an embodiment of the present invention provides a method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, comprising the following steps:

[0043] Step S100, based on the underground pipeline GIS data platform, obtain the coordinate information and type information of the underground pipeline points in the preset area.

[0044] Step S200, based on the coordinate information and type information of the underground pipeline points, the endpoint types and three-dimensional structure information of several straight pipe sections in a preset area are obtained by a nonlinear difference fitting method.

[0045] Step S300: inserting connection point models at the connection points at both ends of each straight pipe segment according to the endpoint type, and generating a three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe segment.

[0046] The present invention accurately simulates the three-dimensional structural information of underground pipelines through a nonlinear difference fitting method, including detailed features of endpoint types and connection point models, thereby enhancing the practicability and reliability of the model; it also reduces the complexity of manual operations and reduces errors, providing powerful data support and visualization tools for the planning, design, construction and management of underground pipelines, thereby improving the quality and efficiency of the entire underground pipeline project.

[0047] Furthermore, in step S200, based on the coordinate information and type information of the underground pipeline points, the endpoint types and three-dimensional structure information of several straight pipe sections in the preset area are obtained by a nonlinear difference fitting method, including:

[0048] Step S210, based on the coordinate information and type information of the underground pipeline points, a plurality of straight pipe sections in a preset area are obtained through an interpolation algorithm.

[0049] After obtaining the coordinate information and type information of the underground pipeline points, the straight pipe sections can be automatically generated from the coordinate information and type information of the underground pipeline points through precise interpolation algorithms, which significantly improves the efficiency and automation of underground pipeline model construction.

[0050] Step S220: determining the endpoint types of the connection points at both ends of each straight pipe segment based on the preset connection point types.

[0051] Step S230, according to the endpoint types and coordinate information of the connection points at both ends of the straight pipe segment, a number of intermediate elevation fitting points of each straight pipe segment are obtained based on the hyperbolic tangent function.

[0052] Using the hyperbolic tangent function to fit the intermediate elevation can effectively simulate the natural changes of underground pipelines in the vertical direction and enhance the authenticity and reliability of the model.

[0053] Step S240, using the two end connection points of each straight pipe segment and a number of intermediate elevation fitting points, construct the three-dimensional structure information of each straight pipe segment, the three-dimensional structure information including: diameter, length and curvature.

[0054] By combining the connection points and the intermediate elevation fitting points, the three-dimensional structural information of the straight pipe section including diameter, length and curvature is obtained, providing a comprehensive three-dimensional view and precise spatial positioning for underground pipelines, which has important practical application value for pipeline planning, construction, maintenance and asset management.

[0055] Furthermore, endpoint types include: branch pipe segments, wellhead pipe points, and tee pipe points. Among them, branch pipe segments represent the points where a straight pipe segment is connected to another or more pipe segments, and special structures are required to ensure the reasonable distribution and flow of fluids at the branches; in three-dimensional models, accurate representation of branch pipe segments is crucial to understanding the complex connections of pipeline systems. Wellhead pipe points refer to the points where a straight pipe segment is connected to a wellhead. The wellhead is a key access point for maintenance, overhaul, and monitoring in underground pipeline systems; in the model, the precise location and type information of wellhead pipe points helps plan maintenance work and evaluate pipeline accessibility. A tee pipe point is a connection point where three or more pipe segments meet. A tee pipe point plays a role in distributing and changing the flow direction of fluids in a pipeline system. In a three-dimensional model, correct modeling of tee pipe points is very important for analyzing the fluid dynamics and structural stability of pipeline systems.

[0056] Furthermore, the calculation formula for the elevation value of the intermediate elevation fitting point z(t) is:

[0057]

[0058] Among them, z 0 and z 1 is the actual elevation value of the two endpoints of the straight pipe section, L is the straight-line distance value of the two endpoints of the straight pipe section, the numerical range of t is 0≤t≤L, and the number of selected t is determined according to the number of intermediate elevation fitting points. ω is the elevation change width coefficient. The larger the ω value, the smoother the elevation change.

[0059] Using the hyperbolic tangent function to calculate the intermediate elevation fitting points can provide smooth and controllable elevation changes, effectively avoid oscillations at the interpolation edge, and adapt to complex terrain changes and nonlinear characteristics of pipeline burial depth. The hyperbolic tangent function is both accurate and stable when simulating the vertical profile of underground pipelines, and is easy to implement in calculations, providing an efficient and reliable method for automated 3D pipeline modeling.

[0060] Furthermore, after obtaining the endpoint types and three-dimensional structure information of a plurality of straight pipe sections in a preset region in step S200, the method further includes:

[0061] Step S241, determining whether the actual elevation value of the connection point at the endpoint of the straight pipe section is within a preset range of the endpoint elevation design value.

[0062] Step S242: if yes, generate a three-dimensional underground pipeline model based on the actual elevation value.

[0063] Step S243: if not, generate a three-dimensional underground pipeline model based on the endpoint elevation design value.

[0064] By accurately judging and selecting the actual elevation value or design elevation value of the straight pipe segment endpoint connection point, the elevation data of the 3D underground pipeline model is ensured to be both accurate and in compliance with engineering specifications. This method not only improves the reliability of the model and the safety of the project, but also significantly improves the efficiency of model generation through an automated judgment process.

[0065] When the actual elevation value deviates from the reasonable range of the design elevation value, it may include two situations: one is that the actual elevation value is greater than the upper limit of the reasonable range of the design elevation value; the other is that the actual elevation value is less than the lower limit of the reasonable range of the design elevation value.

[0066] Therefore, the step S243 of generating a three-dimensional underground pipeline model based on the endpoint elevation design value includes:

[0067] Step S243a, when the actual elevation value of the straight pipe segment endpoint connection point is greater than the preset upper limit of the endpoint elevation design value, a three-dimensional underground pipeline model is generated based on the preset upper limit of the endpoint elevation design value.

[0068] Step S243b, when the actual elevation value of the straight pipe segment endpoint connection point is less than the preset range lower limit value of the endpoint elevation design value, a three-dimensional underground pipeline model is generated based on the preset range lower limit value of the endpoint elevation design value.

[0069] The above steps ensure that the 3D underground pipeline model meets the design elevation specifications in any case. When the actual elevation value exceeds the preset upper limit of the design value, the model will be generated based on the upper limit of the design value to avoid excessive elevation deviation; on the contrary, if the actual elevation value is lower than the preset lower limit of the design value, the model will be generated based on the lower limit of the design value to prevent excessive elevation deviation. Strict elevation control is implemented during the model generation process to improve the accuracy and compliance of the pipeline model.

[0070] Specifically, the coordinate information of underground pipeline points includes: pipe bottom elevation, pipe top elevation and pipe diameter. The types of underground pipeline points include: wells, wells, valves, meters, tees, reducers and / or connecting pipes.

[0071] Accordingly, please refer to Figure 2 A second aspect of an embodiment of the present invention provides a three-dimensional underground pipeline model generation device based on nonlinear interpolation fitting, comprising:

[0072] Data acquisition module 1, which is used to obtain coordinate information and type information of underground pipeline points in a preset area based on the underground pipeline GIS data platform;

[0073] A straight pipe segment generation module 2 is used to obtain the endpoint type and three-dimensional structure information of several straight pipe segments in a preset area through a nonlinear difference fitting method based on the coordinate information and type information of the underground pipeline points;

[0074] The model generation module 3 is used to insert the connection point model at the connection points at both ends of each straight pipe segment according to the endpoint type, and generate a three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe segment.

[0075] The functional modules in the above-mentioned spatial data analysis and processing system correspond to the steps in the spatial data analysis and processing method. Each functional module can be further defined as each functional unit according to the detailed steps of the analysis and processing method to be consistent with the method, and will not be described in detail here.

[0076] Correspondingly, the third aspect of an embodiment of the present invention also provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the above-mentioned three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting.

[0077] In addition, the fourth aspect of the embodiment of the present invention further provides a computer-readable storage medium on which computer instructions are stored. When the instructions are executed by a processor, the above-mentioned three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting is implemented.

[0078] The embodiment of the present invention aims to protect a method and device for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, wherein the method includes the following steps: based on the underground pipeline GIS data platform, obtaining the coordinate information and type information of underground pipeline points in a preset area; based on the coordinate information and type information of the underground pipeline points, obtaining the endpoint type and three-dimensional structure information of several straight pipe sections in the preset area through a nonlinear difference fitting method; inserting a connection point model at the connection points at both ends of each straight pipe section according to the endpoint type, and combining the three-dimensional structure information of the straight pipe section to generate a three-dimensional underground pipeline model. The above technical solution has the following effects:

[0079] 1. Accurately simulate the three-dimensional structural information of underground pipelines through nonlinear difference fitting method, including detailed characteristics of endpoint types and connection point models, which enhances the practicality and reliability of the model;

[0080] 2. It reduces the complexity of manual operations and reduces errors, providing powerful data support and visualization tools for the planning, design, construction and management of underground pipelines, and improving the quality and efficiency of the entire underground pipeline project.

[0081] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0082] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0083] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting, characterized in that: The steps include: Based on the underground pipeline GIS data platform, obtain the coordinate information and type information of underground pipeline points in the preset area; Based on the coordinate information and type information of the underground pipeline points, the endpoint types and three-dimensional structure information of several straight pipe sections in the preset area are obtained by a nonlinear interpolation fitting method; Inserting connection point models at the connection points at both ends of each straight pipe segment according to the endpoint type, and generating the three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe segment; The method of obtaining the endpoint types and three-dimensional structure information of a plurality of straight pipe sections in the preset region based on the coordinate information and type information of the underground pipeline points by a nonlinear interpolation fitting method includes: Based on the coordinate information and type information of the underground pipeline point, a plurality of straight pipe sections in the preset area are obtained by an interpolation algorithm; Based on the preset connection point type, determine the endpoint type of the connection points at both ends of each straight pipe segment; According to the endpoint types and coordinate information of the connection points at both ends of the straight pipe section, a plurality of intermediate elevation fitting points of each straight pipe section are obtained based on a hyperbolic tangent function; The three-dimensional structural information of each straight pipe section is constructed by using the two end connection points of each straight pipe section and a plurality of intermediate elevation fitting points. The three-dimensional structural information includes: diameter, length and curvature.

2. The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to claim 1 is characterized in that: The endpoint types include: branch pipe segments, wellhead pipe points and tee pipe points.

3. The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to claim 1 is characterized in that: The calculation formula for the elevation value of the intermediate elevation fitting point z(t) is: Among them, z0 and z1 are the actual elevation values ​​of the two endpoints of the straight pipe section, L is the straight-line distance value between the two endpoints of the straight pipe section, the numerical range of t is 0≤t≤L, and the number of selected t is determined according to the number of intermediate elevation fitting points. ω is the elevation change width coefficient. The larger the ω value, the smoother the elevation change.

4. The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to claim 3 is characterized in that: After obtaining the endpoint types and three-dimensional structure information of the plurality of straight pipe sections in the preset region, the method further includes: Determine whether the actual elevation value of the connection point of the endpoint of the straight pipe section is within the preset range of the endpoint elevation design value; If so, generating the three-dimensional underground pipeline model based on the actual elevation value; If not, the three-dimensional underground pipeline model is generated based on the endpoint elevation design value.

5. The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to claim 4 is characterized in that: The step of generating the three-dimensional underground pipeline model based on the endpoint elevation design value comprises: When the actual elevation value of the connection point of the endpoint of the straight pipe section is greater than the upper limit value of the preset range of the endpoint elevation design value, the three-dimensional underground pipeline model is generated based on the upper limit value of the preset range of the endpoint elevation design value; When the actual elevation value of the connection point of the endpoint of the straight pipe section is less than the lower limit value of the preset range of the endpoint elevation design value, the three-dimensional underground pipeline model is generated based on the lower limit value of the preset range of the endpoint elevation design value.

6. The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to any one of claims 1 to 5, characterized in that: The coordinate information of the underground pipeline point includes: pipe bottom elevation, pipe top elevation and pipe diameter; The types of underground pipeline points include: wells, wells, valves, meters, tees, reducers and / or connecting pipes.

7. A three-dimensional underground pipeline model generation device based on nonlinear interpolation fitting, characterized in that: The method for generating a three-dimensional underground pipeline model based on nonlinear interpolation fitting according to any one of claims 1 to 6 is used to generate a three-dimensional underground pipeline model, comprising: A data acquisition module, which is used to obtain the coordinate information and type information of underground pipeline points in a preset area based on the underground pipeline GIS data platform; A straight pipe segment generation module, which is used to obtain the endpoint type and three-dimensional structure information of several straight pipe segments in the preset area through a nonlinear interpolation fitting method based on the coordinate information and type information of the underground pipeline points; The model generation module is used to insert a connection point model at the connection points at both ends of each straight pipe segment according to the endpoint type, and generate the three-dimensional underground pipeline model in combination with the three-dimensional structural information of the straight pipe segment.

8. An electronic device, characterized in that: include: at least one processor; And a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that: Computer instructions are stored thereon, and when the instructions are executed by a processor, a three-dimensional underground pipeline model generation method based on nonlinear interpolation fitting as described in any one of claims 1-6 is implemented.

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