A precise construction handover method for underground cables based on high-precision positioning equipment

Abstract

The present invention relates to the technical field of underground cable construction, and particularly relates to a precise construction disclosure method for underground cables based on high-precision positioning equipment. By deploying high-precision positioning equipment at the construction site, the positioning data, environmental data, and underground facility data of underground cables are collected in real time, and data preprocessing and integration are carried out. By comparing with the design drawings, potential deviations are corrected, and a three-dimensional cable path model is constructed to provide precise cable path disclosure information for the construction team; The present invention can effectively identify the relationship between the buried position, direction, depth of the cable and the surrounding environment, and provide potential construction risk information to ensure accuracy and safety during the construction process. In addition, through intelligent data fusion and decision support, the construction team can adjust the construction plan in real time, avoid conflicts with other underground facilities, and improve the construction quality and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of underground cable construction, and particularly to a precise construction disclosure method for underground cables based on high-precision positioning equipment. Background Art

[0002] As important power and communication transmission facilities, underground cables are widely used in multiple fields such as cities, industrial areas, and transportation networks. The laying of underground cables requires extremely high construction accuracy to ensure its long-term stable operation and the convenience of later maintenance.

[0003] Currently, although high-precision positioning technology, sensor technology, and data processing technology have been applied in underground cable construction, such as high-precision devices like GPS, differential GPS, and inertial measurement units that can provide data on the position, depth, and orientation of the cable. At the same time, environmental information and underground facility data can also be collected. However, there are still many problems in the existing technology. First, in terms of data processing and fusion, the existing technology lacks efficient integration of multi-source data and cannot capture the deviation between the cable and the design drawing in real time during construction, resulting in construction personnel being unable to adjust the burial path and depth in a timely manner. Second, although some technologies provide precise positioning, most lack an intelligent feedback and decision support system and cannot dynamically optimize the construction process based on real-time data. During construction, challenges such as conflicts with other underground facilities and safety hazards are often faced, and the existing technology has not effectively solved these problems, leading to an increase in risks during construction and insufficient construction accuracy and safety. Summary of the Invention

[0004] The present invention provides a precise construction disclosure method for underground cables based on high-precision positioning equipment.

[0005] A precise construction disclosure method for underground cables based on high-precision positioning equipment includes the following steps:

[0006] S1, on-site investigation and data collection: Deploy high-precision positioning equipment at the underground cable construction site to collect multi-source data related to the underground cable. The multi-source data includes positioning data, environmental data, and underground facility data;

[0007] The positioning data includes the position (latitude and longitude coordinates), burial depth, and orientation of the cable;

[0008] The environmental data refers to the environmental information around the cable path, including ground buildings, roads, and soil characteristics;

[0009] The underground facility data refers to other underground facilities that intersect or are adjacent to the underground cable path, including water supply pipelines and power pipelines;

[0010] S2, Data preprocessing: Preprocess the collected multi-source data, including data cleaning, missing value imputation, and outlier handling;

[0011] S3, Compare cable path with design drawings: Compare the preprocessed positioning data with the design drawings of underground cable lines, analyze and correct potential deviations;

[0012] S4, Data fusion and model construction: Integrate the positioning data, environmental data, and underground facility data using a data fusion algorithm, and use 3D modeling technology to construct a 3D path model of the cable, showing the actual buried position, orientation of the cable, and its relationship with the surrounding environment and underground facilities;

[0013] S5, Precise disclosure and decision support: Provide precise cable path disclosure information for the construction team based on the constructed 3D path model, including detailed cable path, burial depth, surrounding environment, and potential construction risks.

[0014] Optionally, S1 includes:

[0015] S11, Positioning equipment: Select high-precision positioning equipment according to the specific requirements of the underground cable construction site, including GPS, differential GPS, and total station;

[0016] S12, Deploy high-precision positioning equipment: Deploy the selected high-precision positioning equipment at key positions of the underground cable construction site;

[0017] S13, Real-time collect positioning data of the cable: At the construction site, use the deployed high-precision positioning equipment to collect the position information of the cable in real time, including the longitude and latitude coordinates, burial depth, and orientation of the cable;

[0018] S14, Collect environmental data: Use environmental monitoring equipment to collect environmental data;

[0019] S15, Collect underground facility data: Use underground facility detection equipment (such as underground pipeline detectors, ground-penetrating radar, etc.) to collect underground facility data near the cable path;

[0020] S16, Synchronize data storage and transmission: Real-time synchronously upload the collected positioning data, environmental data, and underground facility data to the data storage platform.

[0021] Optionally, S2 includes:

[0022] S21, Data cleaning: Conduct preliminary cleaning on the collected multi-source data to remove invalid or duplicate data points;

[0023] S22, Missing value imputation: For missing values caused by equipment failures or environmental factors during data collection, use imputation methods to supplement them;

[0024] S23, Outlier Detection and Handling: Detect and correct possible outliers in the data to ensure data rationality;

[0025] S24: Data Standardization and Normalization: Standardize the preprocessed data;

[0026] S25: Data Storage and Backup: Store the data that has undergone data cleaning, missing value filling, and outlier handling, and perform multiple backups to prevent data loss.

[0027] Optionally, the S3 includes:

[0028] S31, Preliminary Comparison: Make a preliminary comparison between the preprocessed positioning data and the underground cable line design drawings. By calculating the differences in spatial position, depth, and orientation between the two, preliminarily identify potential deviation areas.

[0029] S32, Calculate Deviation Value and Conduct Deviation Analysis: Based on the preliminary comparison, use error analysis methods to calculate the deviation value between the actual position of the cable path and the design drawings;

[0030] S33, Correction and Amendment of Deviation Value: For the calculated deviation value, perform correction processing;

[0031] S34, Comparison after Amendment and Confirmation of Consistency: Compare the corrected cable path with the design drawings again to confirm the consistency between the corrected path, depth, and orientation and the design drawings.

[0032] Optionally, the S5 further includes:

[0033] S35, Further Analysis and Investigation of Abnormal Deviations: For the large deviations found during the comparison process, conduct further abnormal analysis and investigation;

[0034] S36, Cross - departmental Collaboration and Data Feedback: Feed back the comparison results and deviation analysis to the construction management team, design engineers, and quality supervision personnel for cross - departmental collaboration to discuss how to correct potential problems in the design drawings or adjust the construction plan;

[0035] S37, Evaluation and Implementation of Amendment Plan: For areas with large deviations, propose an amendment plan based on the deviation analysis results and evaluate the plan;

[0036] S38, Handover of the Corrected Path: After the corrected cable path, depth, and orientation are confirmed, provide them to the construction team for handover.

[0037] Optionally, the S4 includes:

[0038] S41, Application of data fusion algorithm: After the collected positioning data, environmental data, and underground facility data are preprocessed, the weighted average method is used for fusion;

[0039] S42, Evaluation and optimization of data fusion results: The fused data is input into the Kalman filter algorithm for optimization processing;

[0040] S43, Quality inspection and correction of fused data: Conduct quality inspection on the fused data to check the integrity and accuracy of the data.

[0041] Optionally, S4 further includes:

[0042] S44, Application of 3D modeling algorithm: Based on the fused data, the B-spline curve fitting algorithm is used to construct a 3D model of the cable path;

[0043] S45, 3D model construction and environmental integration: Use AutoCAD for 3D modeling and integrate it with environmental data to construct a 3D path model of the cable;

[0044] S46, Optimization and verification of 3D path model: Optimize the constructed 3D path model to ensure that the 3D path model meets the construction requirements.

[0045] Optionally, S5 includes:

[0046] S51, Generation of handover information: According to the constructed 3D path model, generate detailed cable path handover information;

[0047] S52, Visual display of handover information: Display the generated handover information in a graphical way;

[0048] S53: Precision verification of handover information: Conduct precision verification on the handover information.

[0049] Optionally, S5 further includes:

[0050] S54, Construction risk assessment: According to the generated handover information, conduct construction risk assessment;

[0051] S55: Construction decision-making support: Combine the risk assessment results with the cable path handover information to provide decision-making support for the construction team.

[0052] Advantages of the present invention:

[0053] In the present invention, through the application of high-precision positioning equipment, accurate exploration and data collection of underground cable paths are achieved. By detailed collection and processing of the actual position, burial depth, orientation, and surrounding environment of the cable, a high degree of consistency between the cable path and the design drawings is ensured. The use of data preprocessing techniques, such as missing value filling and outlier handling, effectively eliminates data deviation and error. This process greatly reduces the path deviation that may occur in the traditional construction process, significantly improves the construction accuracy, and reduces the potential later maintenance costs during construction.

[0054] In the present invention, by comparing the multi-source data collected with the design drawings and using a data fusion algorithm to construct a three-dimensional cable path model, accurate cable path disclosure information can be provided for the construction team, comprehensively showing the burial depth, orientation, and surrounding environment of the cable. On this basis, the construction team can accurately master the actual position of the underground cable and avoid potential construction obstacles and risks in advance, such as intersections with other underground facilities and the influence of soil types. Through the construction risk assessment and decision support mechanism, the construction team can dynamically adjust the construction strategy, select the most suitable path and depth, optimize the construction plan, avoid unnecessary rework and delays, and ensure the safety and efficiency of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0056] Figure 1 It is a schematic flowchart of the method according to an embodiment of the present invention;

[0057] Figure 2 It is a schematic flowchart of the S4 process according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0058] The present invention will be described in detail below in conjunction with the drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the drawing part is only for more specific description of the embodiments and is not intended to specifically limit the present invention.

[0059] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0060] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0061] like Figure 1 - Figure 2 As shown, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment includes the following steps:

[0062] S1, on-site investigation and data collection: deploy high-precision positioning equipment at the underground cable construction site to collect multi-source data related to underground cables, including positioning data, environmental data and underground facility data;

[0063] Positioning data includes the location (latitude and longitude coordinates), burial depth and direction of the cable;

[0064] Environmental data refers to the environmental information around the cable path, including ground buildings, roads and soil characteristics;

[0065] Underground utility data refers to other underground facilities that intersect or are adjacent to underground cable routes, including water and power lines;

[0066] S2, data preprocessing: preprocessing the collected multi-source data, including data cleaning, missing value filling and outlier processing;

[0067] S3, comparison of cable path with design drawings: compare the pre-processed positioning data with the design drawings of underground cable lines, analyze and correct potential deviations, and ensure the consistency between the actual buried path, depth and direction of the cable and the design drawings;

[0068] S4, data fusion and model building: data fusion algorithm is used to integrate positioning data, environmental data and underground facility data, and 3D modeling technology is used to build a 3D path model of the cable to show the actual buried location and direction of the cable and its relationship with the surrounding environment and underground facilities;

[0069] S5, accurate briefing and decision support: Based on the constructed 3D path model, accurate cable path briefing information is provided to the construction team, including detailed cable path, burial depth, surrounding environment and potential construction risks, to ensure the accuracy and safety of the construction process.

[0070] S1 includes:

[0071] S11, Positioning equipment: According to the specific needs of the underground cable construction site, high-precision positioning equipment is selected, including GPS, differential GPS and total station. When selecting, a comprehensive evaluation is conducted based on the required accuracy requirements, construction environment, equipment adaptability and subsequent data processing needs;

[0072] S12, deploy high-precision positioning equipment: Deploy the selected high-precision positioning equipment at key locations on the underground cable construction site. The equipment should be laid out to cover the entire construction path of the cable and ensure that the cable positioning data can be collected in real time. When deploying, consider the appropriate spacing between devices to ensure positioning coverage without blind spots.

[0073] S13, real-time collection of cable positioning data: At the construction site, use the deployed high-precision positioning equipment to collect the location information of the cable in real time, including the longitude and latitude coordinates, burial depth and direction of the cable. The positioning equipment should monitor and record the actual burial path and depth of the cable in real time to ensure the high precision and accuracy of the data;

[0074] S14, Collect environmental data: Use environmental monitoring equipment (such as environmental sensors, drones, ground sensors, etc.) to collect environmental data. The collection of environmental data helps to understand the geographical environment characteristics of the cable path, which plays an important role in risk management and subsequent decision-making during the construction process;

[0075] S15, Collect underground facility data: Use underground facility detection equipment (such as underground pipeline detectors, geological radar, etc.) to collect underground facility data near the cable path. The underground facility data includes information on other underground facilities that intersect or are adjacent to the cable path, such as water pipelines, power pipelines, natural gas pipelines, etc. Accurate underground facility data collection can avoid conflicts with existing facilities during construction and ensure construction safety;

[0076] S16, synchronous data storage and transmission: The collected positioning data, environmental data and underground facility data shall be synchronously uploaded to the data storage platform in real time. The data shall be transmitted in an encrypted manner and backed up to ensure the integrity and security of the data for subsequent analysis and processing.

[0077] S2 includes:

[0078] S21, Data Cleaning: Initially clean the multi-source data collected, removing invalid or duplicate data points. The data cleaning process includes the following aspects:

[0079] Remove duplicate data: Check the unique identifier of each data point (such as timestamp, device ID, etc.), remove duplicate records, and ensure that each data point appears only once in the dataset.

[0080] Remove invalid data: Identify and remove invalid data caused by device failures, signal interference, or human errors. For example, in cable positioning data, if data points at certain positions do not fall within the expected range (such as abnormal deviation of longitude and latitude), they are marked as invalid data and deleted.

[0081] Remove null value data: Check whether there are null or missing values in the dataset. If some data is missing (such as missing soil moisture in environmental data), further processing is required.

[0082] S22, Missing Value Imputation: For missing values caused by device failures or environmental factors during data collection, use imputation methods for supplementation. The imputation methods include:

[0083] Interpolation method: For continuous variables (such as the depth of the cable or soil moisture), use linear interpolation or polynomial interpolation to predict missing values based on existing data points.

[0084] Nearest neighbor imputation method: For discrete data (such as building information in environmental data), use the nearest neighbor imputation method to fill in missing values with the nearest valid data value.

[0085] Mean imputation method: For cases where partial data missing does not affect the overall trend, use the mean of this variable for imputation.

[0086] S23, Outlier Detection and Handling: Detect and correct possible outliers in the data to ensure the rationality of the data. The outlier detection process includes:

[0087] Adopt statistical-based detection methods, such as the standard deviation method or box plot method, to identify outliers in the dataset that deviate from the normal range. For example, if the buried depth data of the cable is far from the expected value (such as an abnormal value with a negative depth or exceeding the ground thickness), it needs to be marked as an outlier;

[0088] According to the detection results, correct the outliers. The correction methods can adopt median imputation, sliding window correction, or interpolation methods according to the specific situation to ensure data rationality.

[0089] S24: Data Standardization and Normalization: Perform standardization processing on the preprocessed data to ensure the unity and compatibility among different data sources. The specific methods include:

[0090] Normalization: Convert data with different dimensions (such as cable depth) into the same standardized range. For example, normalize all values to the range between 0 and 1 to avoid the impact of dimension differences on subsequent analysis.

[0091] z-score standardization: For variables that need to be statistically analyzed, use the z-score standardization method, that is, convert the data into a form with a mean of 0 and a standard deviation of 1, making the comparison between different data more fair.

[0092] S25: Data storage and backup: Store the data after data cleaning, missing value filling, and outlier handling, and perform multiple backups to prevent data loss. The data storage should adopt an efficient and secure data storage method and support subsequent real-time access and historical queries.

[0093] S3 includes:

[0094] S31, Preliminary comparison: Make a preliminary comparison between the preprocessed positioning data (including the longitude, latitude coordinates, buried depth, and orientation of the cable) and the underground cable line design drawings. By calculating the differences in spatial position, depth, and orientation between the two, preliminarily identify potential deviation areas. This comparison process can use basic geometric operations such as distance calculation and angle calculation to ensure that the spatial relationship between the positioning data and the design drawings meets expectations.

[0095] S32, Calculate the deviation value and perform deviation analysis: Based on the preliminary comparison, use the error analysis method to calculate the deviation value between the actual position of the cable path and the design drawings, including:

[0096] Position deviation: Analyze the spatial difference between the actual buried position of the cable and the design drawings by calculating the distance difference between the actual cable path and the corresponding position on the design drawings.

[0097] Depth deviation: Compare the buried depth of the cable with the depth specified in the design drawings, calculate the depth difference, and identify whether there are problems such as over-depth or shallow burial.

[0098] Orientation deviation: Compare the actual orientation of the cable with the predetermined orientation on the design drawings, identify the changes in the curve part of the cable path, and calculate the angle deviation.

[0099] S33, Correction and modification of the deviation value: For the calculated deviation value, perform correction processing to ensure that the differences between the actual buried path, depth, and orientation of the cable and the design drawings are within an acceptable range, including:

[0100] Interpolation correction: Adopt linear interpolation or spline interpolation methods to accurately correct the areas with large deviations to ensure the continuity and consistency between the cable path and the design drawings.

[0101] Smoothing correction: In areas with small deviations, a smoothing algorithm (such as curve fitting) is used to smooth and correct the cable path, making the actual buried path more in line with the design requirements;

[0102] S34, Comparison and consistency confirmation after correction: The corrected cable path is compared with the design drawings again to confirm the consistency between the corrected path, depth, and orientation and the design drawings. The comparison results should meet the construction accuracy requirements to ensure that the actual buried state of the cable is consistent with the design intent.

[0103] S5 also includes:

[0104] S35, Further analysis and troubleshooting of abnormal deviations: For the large deviations found during the comparison process, further abnormal analysis and troubleshooting are carried out. By comprehensively analyzing the possible causes of the deviations, such as equipment errors, construction errors, and underground environment changes, it is confirmed whether it is a normal construction deviation or there are potential problems. For suspected problem areas, more accurate positioning equipment is used or re-measured to ensure the accuracy of the deviation analysis;

[0105] S36, Cross-departmental collaboration and data feedback: The comparison results and deviation analysis are fed back to the construction management team, design engineers, and quality supervision personnel for cross-departmental collaboration to discuss how to correct potential problems in the design drawings or adjust the construction plan. Through collaboration, the cable path, depth, and orientation are optimized, ultimately eliminating unnecessary errors and ensuring construction quality;

[0106] S37, Evaluation and implementation of the correction plan: For areas with large deviations, according to the deviation analysis results, a correction plan is proposed and the plan is evaluated. During the evaluation process, the feasibility, cost, and impact on the surrounding environment of the construction plan are considered. After determining the optimal correction plan, the correction measures are implemented in a timely manner and compared and confirmed again to ensure that the deviation is effectively resolved;

[0107] S38, Disclosure of the corrected path: After the corrected cable path, depth, and orientation are confirmed, they are provided to the construction team for disclosure. The corrected data is presented through visual displays (such as electronic maps, 3D models, etc.) to ensure that the construction team can accurately understand the actual position and orientation of the cable and provide a clear basis for subsequent construction.

[0108] S4 includes:

[0109] S41, Application of data fusion algorithm: After the collected positioning data, environmental data, and underground facility data are preprocessed, the weighted average method is used for fusion. The specific steps include:

[0110] Set a weight value for each data source (positioning data, environmental data, underground facility data), and the weight value is assigned according to the reliability and accuracy of the data source. For example, positioning data has a higher accuracy, and the weight is set to 0.5; the weight of environmental data is set to 0.3; the weight of underground facility data is set to 0.2.

[0111] Perform weighted averaging on the same location data of each data source to synthesize the final fused data. For example, if the longitude and latitude of a location in the positioning data is (x1, y1), the soil property of the location in the environmental data is A, and the distance of the water pipeline at the location in the underground facility data is B, then the comprehensive information of the location (x, y, A, B) is obtained after weighted calculation.

[0112] S42, evaluation and optimization of data fusion results: the fused data is input into the Kalman filter algorithm for optimization processing to further remove noise and outliers to ensure the accuracy of the fusion results. The specific steps include:

[0113] For each set of position data and environmental data, the prediction error of the Kalman filter is calculated, and the data is gradually corrected through iterative calculations;

[0114] According to the optimized data output by the Kalman filter, the deviation in the fusion result is corrected to ensure that the positioning accuracy is consistent with the environmental data;

[0115] S43, quality check and correction of fused data: Perform a quality check on the fused data to check its integrity and accuracy. If a large deviation is found in the fused data, use the following correction method:

[0116] Supplement with redundant sensors or new data collection, especially for positioning data, use multiple high-precision positioning devices for cross-verification.

[0117] For environmental data and underground facility data, the accuracy of the data is ensured through actual on-site verification and comparison with reference design drawings.

[0118] S4 also includes:

[0119] S44, application of 3D modeling algorithm: Based on the fused data, a 3D model of the cable path is constructed using a B-spline curve fitting algorithm. The specific steps include:

[0120] Use B-spline curve to fit the actual buried path of the cable to ensure that the cable path is as consistent as possible with the path on the predetermined design drawing. B-spline curve can accurately fit the complex path of the cable through its control points, and is particularly suitable for non-straight cable paths;

[0121] Based on the data of each control point (such as longitude and latitude coordinates, burial depth), a smooth cable path curve is generated through interpolation calculation;

[0122] S45, 3D model construction and environmental integration: Use AutoCAD for 3D modeling and integrate it with environmental data to construct a 3D path model of the cable. The specific steps include:

[0123] Import the cable path model into CAD software and construct a 3D cable line based on the longitude and latitude coordinates and burial depth of the cable path;

[0124] Integrate the surrounding environmental information in the model, such as soil type, ground buildings, roads, other underground facilities (such as water pipes, power pipelines), etc., to ensure that the 3D path of the cable is accurately associated with the surrounding environment;

[0125] Use the 3D modeling tools of CAD software to visually display the cable path and environmental information, showing the actual position, orientation of the cable and its relationship with the surrounding environment;

[0126] S46, Optimization and verification of the 3D path model: Optimize the constructed 3D path model to ensure that the 3D path model meets the construction requirements. The specific steps include:

[0127] View the 3D model from multiple angles to ensure that there are no conflicts between the cable path and existing underground facilities.

[0128] By simulating the construction process, check the relationship between the cable path and the surrounding environment (such as buildings, roads) to ensure that the construction will not affect the normal use of the surrounding facilities.

[0129] According to the actual feedback on the construction site, update the model in real time to ensure that the data during the construction process is consistent with the design drawings.

[0130] Using the B-spline curve fitting algorithm and CAD modeling technology, accurately construct a 3D model of the cable path, integrate the surrounding environment and underground facility information, and provide a comprehensive visual display of the cable path. At the same time, the real-time optimization and verification of the model ensure the accurate matching of the cable path and the design during the construction process, reducing potential problems during construction.

[0131] S5 includes:

[0132] S51, Generation of handover information: According to the constructed 3D path model, generate detailed cable path handover information, which includes the following content:

[0133] Cable path: Show the actual orientation of the cable underground, including the position (longitude and latitude) of each key point and the relationship with adjacent facilities;

[0134] Burial depth: Mark in detail the burial depth of the cable at each location to facilitate the construction team to accurately understand the depth distribution of the cable;

[0135] Surrounding environment information: Include environmental data such as soil type, ground buildings, roads, green areas, groundwater level, etc. that the cable path passes through to ensure comprehensive consideration of the environment during the construction process;

[0136] S52, Visual display of the handover information: Display the generated handover information in a graphical way. This step includes:

[0137] Display data such as cable path, burial depth, and surrounding environment through 3D visualization software (such as AutoCAD, Revit), and provide handover drawings, 3D graphics, and detailed depth profiles;

[0138] Mark possible construction obstacles, potential risk points, and key construction nodes in the 3D model to ensure that the construction team can intuitively understand the layout of the entire cable path and the surrounding environment;

[0139] S53: Precision verification of the handover information: Conduct precision verification on the handover information to ensure that the provided cable path information is consistent with the actual situation at the construction site. This step includes:

[0140] Through on-site inspection and verification, ensure that the generated handover information is consistent with the actual construction environment, including confirming the depth, path, surrounding facilities, etc. of the cable.

[0141] Use ground detection equipment to verify the cable path to ensure no deviation and compliance with design standards.

[0142] S5 also includes:

[0143] S54, Construction risk assessment: According to the generated handover information, conduct construction risk assessment, including:

[0144] Conduct a comprehensive risk analysis of the cable path, identify possible construction obstacles, emergencies, and potential risk points, such as existing underground facilities (such as water pipes, power pipelines) with intersections or complex soil conditions;

[0145] Use geological exploration data and power line data to evaluate potential conflicts during construction, judge the relationship between the cable path and other underground facilities, and evaluate possible collisions, interferences, or construction difficulties;

[0146] S55: Construction decision-making support: Combine the risk assessment results with the cable path handover information to provide decision-making support for the construction team. This step includes:

[0147] Provide targeted suggestions for the construction team to help optimize the construction path, avoid potential risk points, and adjust the construction plan. For example, if the cable path intersects with other underground facilities, it is recommended to adjust the path, depth, or adopt special construction methods (such as increasing the excavation depth, using trenchless technology, etc.);

[0148] Provide an emergency response plan, formulate emergency measures for possible emergencies (such as accidental excavation collisions, environmental disasters, etc.), and ensure the safety during the construction process.

[0149] This invention covers any substitutions, modifications, equivalent methods, and solutions made to the essence and scope of this invention. To enable the public to have a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention. However, those skilled in the art can fully understand this invention without the description of these details. Additionally, to avoid unnecessary confusion to the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0150] The above are only the preferred embodiments of this invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of this invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this invention.

Claims

1. A precise disclosure method for underground cable construction based on high-precision positioning equipment, characterized in that: The following steps are involved: S1, on-site investigation and data collection: deploy high-precision positioning equipment at the underground cable construction site to collect multi-source data related to underground cables, including positioning data, environmental data and underground facility data; The positioning data includes the location, burial depth and direction of the cable; The environmental data refers to the environmental information around the cable path, including ground buildings, roads and soil characteristics; The underground facility data refers to other underground facilities intersecting or adjacent to the underground cable path, including water pipelines and power pipelines; S2, data preprocessing: preprocessing the collected multi-source data, including data cleaning, missing value filling and outlier processing; S3, cable path and design drawing comparison: compare the pre-processed positioning data with the underground cable line design drawings to analyze and correct potential deviations; The S3 includes: S31, preliminary comparison: preliminary comparison of the pre-processed positioning data with the underground cable line design drawings, and preliminary identification of potential deviation areas by calculating the differences between the two in spatial position, depth and direction; Position deviation: By calculating the distance difference between the actual cable path and the corresponding position on the design drawing, the spatial difference between the actual cable buried position and the design drawing is analyzed; Depth deviation: Compare the buried depth of the cable with the depth specified in the design drawings, calculate the depth difference, and identify whether there is an over-deep or shallow burial problem; Direction deviation: Compare the actual direction of the cable with the intended direction on the design drawing, identify changes in the cable path in the curved part, and calculate the angle deviation; S32, calculating the deviation value and performing deviation analysis: based on the preliminary comparison, using the error analysis method to calculate the deviation value between the actual position of the cable path and the design drawing; S33, correction and revision of deviation value: performing correction processing on the calculated deviation value; Interpolation correction: Use linear interpolation or spline interpolation methods to accurately correct areas with large deviations; Smoothing correction: In areas with small deviations, a smoothing algorithm is used to smooth the cable path; S34, comparison and consistency confirmation after correction: the corrected cable path is compared with the design drawing again to confirm the consistency between the corrected path, depth and direction and the design drawing; S4, data fusion and model building: data fusion algorithm is used to integrate positioning data, environmental data and underground facility data, and 3D modeling technology is used to build a 3D path model of the cable to show the actual buried location and direction of the cable and its relationship with the surrounding environment and underground facilities; The S4 includes: S41, data fusion algorithm application: after the collected positioning data, environmental data and underground facility data are pre-processed, they are fused using the weighted average method; Set a weight value for each data source, and the weight value is assigned according to the reliability and accuracy of the data source; S42, evaluation and optimization of data fusion results: input the fused data into the Kalman filter algorithm for optimization processing; S43, quality check and correction of fused data: perform quality check on the fused data to check the integrity and accuracy of the data; S5, accurate briefing and decision support: Based on the constructed 3D path model, the construction team is provided with cable path briefing information, including cable path, burial depth, surrounding environment and potential construction risks.

2. According to claim 1, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S1 includes: S11, positioning equipment: according to the specific needs of the underground cable construction site, select high-precision positioning equipment, including GPS, differential GPS and total station; S12, deploy high-precision positioning equipment: deploy the selected high-precision positioning equipment at key locations on the underground cable construction site; S13, real-time collection of cable positioning data: At the construction site, high-precision positioning equipment is deployed to collect cable location information in real time, including the cable's latitude and longitude coordinates, buried depth and direction; S14, collecting environmental data: using environmental monitoring equipment to collect environmental data; S15, collecting underground facility data: using underground facility detection equipment to collect underground facility data near the cable path; S16, synchronous data storage and transmission: synchronously upload the collected positioning data, environmental data and underground facility data to the data storage platform in real time.

3. According to claim 2, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S2 includes: S21, data cleaning: preliminary cleaning of the collected multi-source data to remove invalid or duplicate data points; S22, missing value filling: missing values ​​caused by equipment failure or environmental factors during data collection are supplemented by filling methods; S23, outlier detection and processing: detect and correct outliers in the data to ensure the rationality of the data; S24: Data standardization and normalization: standardize the preprocessed data; S25: Data storage and backup: Store the data after data cleaning, missing value filling and outlier processing, and perform multiple backups to prevent data loss.

4. According to claim 1, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S3 further includes: S35, further analysis and troubleshooting of abnormal deviations: For deviations found during the comparison process, abnormal analysis and troubleshooting are performed; S36, cross-departmental collaboration and data feedback: Feedback the comparison results and deviation analysis to the construction management team, design engineers and quality supervisors to conduct cross-departmental collaboration and discuss how to correct potential problems in the design drawings or adjust the construction plan; S37, Correction plan evaluation and implementation: For areas with deviations, propose correction plans based on the deviation analysis results and evaluate the plans; S38, briefing on the revised path: After the revised cable path, depth and direction are confirmed, they will be provided to the construction team for briefing.

5. According to claim 1, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S4 further comprises: S44, application of 3D modeling algorithm: based on the fused data, a 3D model of the cable path is constructed using the B-spline curve fitting algorithm; S45, 3D model construction and environmental integration: Use AutoCAD for 3D modeling and integrate it with environmental data to build a 3D path model of the cable; S46, Optimization and verification of the three-dimensional path model: Optimize the constructed three-dimensional path model to ensure that the three-dimensional path model meets the construction requirements.

6. According to claim 5, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S5 includes: S51, generating disclosure information: generating cable path disclosure information according to the constructed three-dimensional path model; S52, visualization of the information disclosure: displaying the generated information disclosure in a graphical manner; S53: Accuracy verification of the information disclosed: perform accuracy verification on the information disclosed.

7. According to claim 6, a method for accurate disclosure of underground cable construction based on high-precision positioning equipment is characterized in that: The S5 further includes: S54, construction risk assessment: conduct construction risk assessment based on the generated briefing information; S55: Construction decision support: Combine risk assessment results with cable path briefing information to provide decision support for the construction team.

Images