A BIM+GIS-based digital delivery system and method for water conservancy projects

Abstract

The application relates to the technical field of water conservancy engineering management, and provides a water conservancy engineering digital delivery system and method based on BIM+GIS, which comprises a central data platform arranged in a case and a design integrated terminal, a construction collection terminal, a model fusion terminal, a quality acceptance terminal, an operation and maintenance terminal and a data delivery terminal connected with the central data platform; the central data platform is used for providing unified data processing and management for the design integrated terminal, the construction collection terminal, the model fusion terminal, the quality acceptance terminal, the operation and maintenance terminal and the data delivery terminal; the design integrated terminal, the construction collection terminal, the model fusion terminal, the quality acceptance terminal, the operation and maintenance terminal and the data delivery terminal are connected with the central data platform through internal communication lines to form a data interaction channel. The application has the effect of improving the digital management level of water conservancy engineering.

Description

Technical Field

[0001] This invention relates to the technical field of water conservancy project management, specifically to a digital delivery system and method for water conservancy projects based on BIM+GIS. Background Technology

[0002] As fundamental and strategic major infrastructure projects, water conservancy projects typically involve long construction periods, numerous participating entities, complex construction environments, and large project scales. With the development of 3D modeling technology, geospatial data technology, and engineering information management technology, the construction management of water conservancy projects is gradually shifting from traditional drawing-based management to digitalization, modeling, and visualization. Building Information Modeling (BIM) can describe the geometric attributes, material information, node relationships, and engineering semantics of water conservancy project components; Geographic Information System (GIS) can express the topography, hydrological environment, geographic coordinate system, and surrounding spatial relationships of the project area. As the technological maturity of both technologies continues to improve, the deep integration of BIM and GIS is gradually becoming an important trend in the digital construction of water conservancy projects.

[0003] In traditional water conservancy engineering construction, the 3D models generated during the design phase often differ from the actual geographic coordinate system. This necessitates repeated coordinate conversions by construction units during on-site measurements, component layout, change confirmation, and deviation verification, resulting in cumbersome processes and a high risk of errors. On-site data collected during the construction phase, such as measured component dimensions, pouring thickness, construction progress markers, and surrounding environmental parameters, is typically stored in isolation as documents, tables, or images, lacking a direct link to the design model and making it difficult to establish component-level data correspondences. This is particularly problematic in water conservancy projects with significant riverbed changes, frequent cofferdam construction, or substantial terrain disturbances, where spatial misalignment between the model and on-site data can easily occur, impacting subsequent comparison, acceptance, and operation and maintenance management processes.

[0004] While some engineering management systems support BIM model display and construction data entry in existing technologies, they generally suffer from a single model coordinate system and difficulty in unifying with GIS geographic coordinates, failing to achieve deep integration of design models, construction data, and geographic information. Some digital delivery platforms only provide format integration functions for delivery documents, lacking spatial management of construction site data and support for component-level deviation analysis, acceptance result binding, and operational spatial positioning. Furthermore, most current systems lack the ability to identify and correct spatial drift-type deviations within the fused model, making them unable to cope with complex environmental changes common in water conservancy engineering construction, such as cofferdam displacement, riverbed scouring, and steel trestle interference, leading to cumulative deviations in the fused model after the overlay of multi-source data.

[0005] A review of relevant publicly available technologies reveals several key solutions. One solution, CN110059150A, proposes a BIM+GIS-based digital archive system for water conservancy projects. This system unifies the management of project archive data within BIM models and GIS spatial scenes, enabling diversified data collection, standardized archiving, and full lifecycle digital management. Another solution, CN107492042A, proposes a GIS+BIM-based construction management method and system for water conservancy and hydropower projects. By establishing a GIS+BIM real 3D scene and a construction management business application platform, it integrates basic geographic information, design results, and construction management data to enhance the comprehensive information management capabilities during the construction phase of water conservancy and hydropower projects. A third solution, CN112258159A, proposes a BIM+GIS-based hydraulic structure management system and method. Through a layered design comprising a basic information layer, a converged network layer, a platform support layer, and an application service layer, it achieves full lifecycle controllability of hydraulic structures during planning, design, construction, and operation and maintenance management, reducing information silos and improving management efficiency through information technology. Although the above-mentioned technical solutions have introduced the integrated application of BIM and GIS in the field of water conservancy projects or hydraulic structures, there are still shortcomings in areas such as spatial mapping of on-site construction data for the entire process of water conservancy project construction, identification and correction of spatial drift deviations in the integrated model, and forming a closed-loop management of design, construction, acceptance, operation and maintenance and digital delivery processes in a unified integrated model.

[0006] The foregoing description of the background art is intended only to facilitate understanding of the invention. This description does not endorse or acknowledge any common general knowledge in the materials mentioned. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned shortcomings by proposing a digital delivery system and method for water conservancy projects based on BIM+GIS.

[0008] The present invention adopts the following technical solution:

[0009] A BIM+GIS-based digital delivery system for water conservancy projects includes a central data platform housed within a chassis, and design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals connected to the central data platform. The central data platform provides unified data processing and management for the design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals. These terminals are connected to the central data platform via internal communication lines, forming a data interaction channel.

[0010] The design integration terminal is used to establish a 3D building information model that matches the geographic coordinate system and generate geometric attribute information of engineering components through parametric methods. The construction acquisition terminal is used to collect construction site data corresponding to the 3D building information model and map the construction site data to the coordinate system of the 3D building information model. The model fusion terminal is used to uniformly process the 3D building information model, the geometric attribute information of engineering components, and the construction site data, and form a fused model through BIM and GIS coordinate association. The quality acceptance terminal is used to compare the deviation of measured information based on the fused model and generate acceptance results. The operation and maintenance management terminal is used to call the fused model indicating that the acceptance results have passed the acceptance during the project operation period to perform spatial positioning and status management of the water conservancy project. The data delivery terminal is used to uniformly archive and convert the 3D building information model, the geometric attribute information of engineering components, the construction site data, the fused model, and the acceptance results to form delivery information that conforms to digital delivery standards.

[0011] Optionally, the design integration terminal includes a model building module and a parameter generation module; the model building module is used to construct a three-dimensional building information model; the parameter generation module is used to attach geometric attribute information to engineering components in a parametric manner, and automatically update the geometric attribute information of the corresponding engineering components when the three-dimensional building information model changes.

[0012] Optionally, the construction data acquisition terminal includes a field data acquisition module and a coordinate mapping module; the field data acquisition module is used to collect progress information, measured dimension information of components, and field environmental parameters during the construction process, and integrate them into construction field data; the coordinate mapping module is used to map the construction field data to the coordinate system of the three-dimensional building information model based on the positioning information.

[0013] Optionally, the model fusion terminal includes a data integration module, a model fusion module, and an anomaly correlation correction module. The data integration module receives and integrates the geometric attribute information of the 3D building information model, engineering components, and construction site data to form a dataset to be fused. The model fusion module performs coordinate unification and spatial element association based on the mapping relationship between the BIM coordinate system and the GIS geographic coordinate system, generating a fused model containing spatial information of engineering components and geographic environment information. The anomaly correlation correction module automatically identifies spatial drift-type deviations based on the historical update sequence of components and environmental change trends during the fusion process, and performs self-recovery correction on suspected misaligned areas through local geographic constraints, so that the fused model maintains spatial consistency in the event of terrain abrupt changes or multi-source data conflicts.

[0014] Optionally, the quality acceptance terminal includes a measured data comparison module, a deviation analysis module, and an acceptance result generation module. The measured data comparison module is used to call the fusion model and compare it with the on-site measured data to identify deviations in the position and size of the components. The deviation analysis module is used to perform statistical analysis on the comparison results to form component deviation amount, deviation direction, and compliance rate indicators. The acceptance result generation module is used to generate an acceptance report based on the analysis results and associate the acceptance conclusion with the components in the corresponding fusion model to obtain the acceptance result.

[0015] Optionally, the operation and maintenance management terminal includes a fusion model invocation module, a spatial positioning module, and a status management module; the fusion model invocation module is used to retrieve the fusion model that has passed acceptance and serves as the basic model for the operation and maintenance phase; the spatial positioning module is used to realize the spatial positioning of water conservancy engineering components based on the coordinate information provided by the fusion model; the status management module is used to record and update facility operation status information, and realize fault recording, maintenance cycle prompts, and equipment status tracking based on the positioning results, so that operation management and acceptance data form a continuous link.

[0016] Optionally, the data delivery terminal includes a data archiving module, a format conversion module, and a delivery generation module; the data archiving module is used to uniformly organize and classify the 3D building information model, geometric attribute information of engineering components, construction site data, fusion model, and acceptance results; the format conversion module is used to convert the archived data into a data format that conforms to digital delivery standards; and the delivery generation module is used to generate delivery information based on the format-converted data.

[0017] A BIM+GIS-based digital delivery method for water conservancy projects is applied to the aforementioned BIM+GIS-based digital delivery system for water conservancy projects. The BIM and GIS-based digital delivery method for water conservancy projects includes:

[0018] S1. Establish a three-dimensional building information model that matches the geographic coordinate system, and generate the geometric attribute information of the engineering components through parametric methods;

[0019] S2, collects construction site data corresponding to the 3D building information model, and maps the construction site data to the coordinate system of the 3D building information model;

[0020] S3 unifies the processing of 3D building information models, geometric attribute information of engineering components and construction site data, and forms a fusion model by associating BIM and GIS coordinates;

[0021] S4. Based on the fusion model, the measured information is compared for deviation to generate acceptance results;

[0022] S5, During the project operation period, the fusion model representing the acceptance results is called to perform spatial positioning and status management of the water conservancy project;

[0023] S6 performs unified archiving and format conversion of 3D building information models, geometric attribute information of engineering components, construction site data, fusion models and acceptance results to form delivery information that conforms to digital delivery standards.

[0024] The beneficial effects achieved by this invention are:

[0025] 1. By housing the central data platform within a chassis and connecting design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals to the central data platform, the entire process of water conservancy projects—from design and construction to acceptance, operation and maintenance, and delivery—is transmitted and processed within a unified data processing framework. This reduces format inconsistencies and data loss issues caused by cross-system calls, improving the overall stability and integration of the digital delivery process. The central data platform provides unified data processing, interface scheduling, and management capabilities for each business terminal, avoiding data format differences, coordinate differences, and time differences when multiple terminals operate in parallel, ensuring consistency and continuity of data throughout the entire project process.

[0026] 2. By designing an integrated terminal, a 3D building information model matching the geographic coordinate system is established, and geometric attribute information that can be updated in a linked manner is generated for engineering components. This ensures a unique correspondence between the model in the design phase and the actual geographic environment, solving the coordinate deviation problem that often occurs in traditional BIM models after entering the construction phase. This provides an accurate benchmark for subsequent construction data mapping, model fusion, and acceptance comparison. The construction data acquisition terminal can directly map the progress information, measured dimensions of components, and environmental parameters collected on-site to the coordinate system of the 3D building information model, solving the bottleneck of the inability to directly connect traditional construction phase data with the design model. This allows on-site data to enter the model system in real time, achieving accurate data correspondence at the component and spatial levels.

[0027] 3. The model fusion terminal performs unified processing of 3D building information models, component geometric attribute information, and construction site data. Based on the mapping relationship between the BIM coordinate system and the GIS geographic coordinate system, a fused model is generated, enabling a unified expression of the detailed structural information of internal engineering components and external geographic environment information, significantly improving the model's spatial representation capabilities. The anomaly correlation correction module automatically identifies spatial drift-type deviations based on the component's historical change sequence and the trend of changes in the site environment. This solves the problem of misalignment that easily occurs in traditional fused models under hydraulic construction environments such as riverbed disturbances and cofferdam displacements, ensuring the spatial consistency and reliability of the fused model.

[0028] 4. The quality acceptance terminal compares deviations between the fusion model and measured data, automatically identifying dimensional deviations, positional deviations, and installation accuracy issues of components. This transforms the acceptance process from traditional manual sampling measurements to model-based full data comparison, improving not only efficiency but also objectivity, completeness, and traceability of the results. The deviation analysis module calculates deviation amount, deviation direction, and compliance rate indicators, giving the acceptance process quantitative characteristics. This helps identify systemic problems in construction procedures and improves project quality management.

[0029] 5. By invoking the fusion model through the operation and maintenance management terminal during the project operation phase, spatial positioning of components, facility status recording, and operation process tracking can be achieved. This ensures accurate integration of management data during the operation phase with acceptance data during the construction phase within the same model system, avoiding the disconnection phenomenon of "being detached from design and construction information" in the traditional operation and maintenance phase. Based on the coordinate information provided by the fusion model, operation and maintenance personnel can quickly locate facilities, enabling fault recording, maintenance reminders, and traceable repair processes, thus shifting operation and maintenance management from experience-based management to model-driven management.

[0030] 6. The data delivery terminal unifies the archiving, classification, and format conversion of 3D building information models, component geometric attribute information, construction site data, fused models, and acceptance results. This enables the output of serialized engineering data according to national or industry digital delivery standards, solving the problems of disorganized, unsystematic, and unreusable engineering data in traditional delivery methods. The final digital delivery deliverables have a unified format, complete structure, and reusability, allowing regulatory units, operation and maintenance units, and subsequent renovation and expansion construction units to directly use the deliverables in their work, thereby enhancing the value of digital assets throughout the entire lifecycle of the project.

[0031] In addition, each terminal adopts a modular structure. For example, the model building module and parameter generation module in the design integration terminal, the field data acquisition module and coordinate mapping module in the construction acquisition terminal, and the data integration module, model fusion module and anomaly correlation correction module in the model fusion terminal can all achieve decoupling of business functions and enhanced scalability, so that the system can be configured according to water conservancy projects of different scales, improving adaptability and long-term maintenance capabilities.

[0032] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0033] Figure 1 This is a system connection block diagram of the present invention;

[0034] Figure 2This is a schematic diagram of the process flow of a digital delivery method for water conservancy projects based on BIM+GIS in this invention;

[0035] Figure 3 This is a rendering of the printing display method of the digital acceptance report in this invention;

[0036] Figure 4 This is a three-dimensional statistical distribution diagram of the spatial drift-type deviation risk index in this invention;

[0037] Figure 5 This is a two-dimensional thermodynamic distribution diagram of the spatial drift-type deviation risk index in this invention. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0039] Example 1: This example provides a BIM+GIS-based digital delivery system for water conservancy projects. The system includes a design integration terminal, a construction data acquisition terminal, a model fusion terminal, a quality acceptance terminal, an operation and maintenance management terminal, a data delivery terminal, and a central data platform integrated within a chassis. The central data platform provides unified data processing and management for the design integration terminal, construction data acquisition terminal, model fusion terminal, quality acceptance terminal, operation and maintenance management terminal, and data delivery terminal. Figure 1 As shown, the design integration terminal, construction acquisition terminal, model fusion terminal, quality acceptance terminal, operation and maintenance management terminal, and data delivery terminal are connected to the central data platform through internal communication lines to form a data interaction channel;

[0040] The design integration terminal is used to establish a 3D building information model that matches the geographic coordinate system and generate geometric attribute information of engineering components through parametric methods. The construction acquisition terminal is used to collect construction site data corresponding to the 3D building information model and map the construction site data to the coordinate system of the 3D building information model. The model fusion terminal is used to uniformly process the 3D building information model, the geometric attribute information of engineering components, and the construction site data, and form a fused model through BIM and GIS coordinate association. The quality acceptance terminal is used to compare the deviation of measured information based on the fused model and generate acceptance results. The operation and maintenance management terminal is used to call the fused model indicating that the acceptance results have passed the acceptance during the project operation period to perform spatial positioning and status management of the water conservancy project. The data delivery terminal is used to uniformly archive and convert the 3D building information model, the geometric attribute information of engineering components, the construction site data, the fused model, and the acceptance results to form delivery information that conforms to digital delivery standards.

[0041] Optionally, the design integration terminal includes a model building module and a parameter generation module; the model building module is used to construct a three-dimensional building information model; the parameter generation module is used to attach geometric attribute information to engineering components in a parametric manner, and automatically update the geometric attribute information of the corresponding engineering components when the three-dimensional building information model changes.

[0042] Optionally, the construction data acquisition terminal includes a field data acquisition module and a coordinate mapping module; the field data acquisition module is used to collect progress information, measured dimension information of components, and field environmental parameters during the construction process, and integrate them into construction field data; the coordinate mapping module is used to map the construction field data to the coordinate system of the three-dimensional building information model based on the positioning information.

[0043] Optionally, the model fusion terminal includes a data integration module, a model fusion module, and an anomaly correlation correction module. The data integration module receives and integrates the geometric attribute information of the 3D building information model, engineering components, and construction site data to form a dataset to be fused. The model fusion module performs coordinate unification and spatial element association based on the mapping relationship between the BIM coordinate system and the GIS geographic coordinate system, generating a fused model containing spatial information of engineering components and geographic environment information. The anomaly correlation correction module automatically identifies spatial drift-type deviations based on the historical update sequence of components and environmental change trends during the fusion process, and performs self-recovery correction on suspected misaligned areas through local geographic constraints, so that the fused model maintains spatial consistency in the event of terrain abrupt changes or multi-source data conflicts.

[0044] Optionally, the quality acceptance terminal includes a measured data comparison module, a deviation analysis module, and an acceptance result generation module. The measured data comparison module is used to call the fusion model and compare it with the on-site measured data to identify deviations in the position and size of the components. The deviation analysis module is used to perform statistical analysis on the comparison results to form component deviation amount, deviation direction, and compliance rate indicators. The acceptance result generation module is used to generate an acceptance report based on the analysis results and associate the acceptance conclusion with the components in the corresponding fusion model to obtain the acceptance result.

[0045] Optionally, the operation and maintenance management terminal includes a fusion model invocation module, a spatial positioning module, and a status management module; the fusion model invocation module is used to retrieve the fusion model that has passed acceptance and serves as the basic model for the operation and maintenance phase; the spatial positioning module is used to realize the spatial positioning of water conservancy engineering components based on the coordinate information provided by the fusion model; the status management module is used to record and update facility operation status information, and realize fault recording, maintenance cycle prompts, and equipment status tracking based on the positioning results, so that operation management and acceptance data form a continuous link.

[0046] Optionally, the data delivery terminal includes a data archiving module, a format conversion module, and a delivery generation module; the data archiving module is used to uniformly organize and classify the 3D building information model, geometric attribute information of engineering components, construction site data, fusion model, and acceptance results; the format conversion module is used to convert the archived data into a data format that conforms to digital delivery standards; and the delivery generation module is used to generate delivery information based on the format-converted data.

[0047] A BIM+GIS-based digital delivery method for water conservancy projects is proposed, applied to the aforementioned BIM+GIS-based digital delivery system for water conservancy projects, combined with... Figure 2 As shown, the digital delivery methods for water conservancy projects based on BIM and GIS include:

[0048] S1. Establish a three-dimensional building information model that matches the geographic coordinate system, and generate the geometric attribute information of the engineering components through parametric methods;

[0049] S2, collects construction site data corresponding to the 3D building information model, and maps the construction site data to the coordinate system of the 3D building information model;

[0050] S3 unifies the processing of 3D building information models, geometric attribute information of engineering components and construction site data, and forms a fusion model by associating BIM and GIS coordinates;

[0051] S4. Based on the fusion model, the measured information is compared for deviation to generate acceptance results;

[0052] S5, During the project operation period, the fusion model representing the acceptance results is called to perform spatial positioning and status management of the water conservancy project;

[0053] S6 performs unified archiving and format conversion of 3D building information models, geometric attribute information of engineering components, construction site data, fusion models and acceptance results to form delivery information that conforms to digital delivery standards.

[0054] For example, in this embodiment, the central data platform is housed within a chassis to provide unified data processing capabilities for various business terminals. The central data platform includes a data exchange unit, a model management unit, and a task scheduling unit. The data exchange unit parses multi-source data packets from various terminals, performing format standardization and data verification. The model management unit stores and retrieves 3D building information models, fused models, and acceptance data structures. The task scheduling unit coordinates data processing flows across different stages, including design, construction, fusion, acceptance, operation and maintenance, and delivery, ensuring that data exchange throughout the entire process operates within a unified framework. To improve the system's adaptability to complex environments at water conservancy engineering sites, the central data platform can optionally be configured with a fault-tolerant caching module to temporarily store and resume data transmission when communication links are unstable or terminals disconnect, preventing process interruptions.

[0055] Furthermore, when constructing a 3D building information model, the design integration terminal can access a pre-configured water conservancy industry component library in the central data platform. This library includes templates for typical water conservancy engineering components such as gates, water conveyance tunnels, spillways, dam front facilities, and slope protection structures. During model building, the design integration terminal can automatically generate geometric attribute information of components through parametric rules, including dimensional parameters, elevation parameters, cross-sectional attributes, and material properties, and perform unified coordinate calibration of the model under the constraints of a geographic coordinate system. For example, when performing multi-disciplinary modeling of large-scale structures, the design integration terminal can automatically split components based on partitioning rules, enabling optimal granularity comparison during subsequent construction data acquisition and acceptance matching.

[0056] During the construction phase, the construction data acquisition terminal obtains measured dimensions of components, concrete pouring thickness, installation deviations, construction progress milestones, and environmental parameters, including water level changes, terrain disturbances, temperature, and humidity, through its on-site data acquisition module, forming on-site construction data. The coordinate mapping module of the construction data acquisition terminal can map this on-site construction data to a unified coordinate system corresponding to the 3D building information model, based on GNSS positioning, total station surveying, laser scanning point clouds, or high-precision RTK reference positions. To enhance data reliability, the construction data acquisition terminal can incorporate a timestamp mechanism to perform time-series correction on data from different sources, ensuring consistent reference time between the acquired construction data and the model components.

[0057] During the fusion phase, the model fusion terminal retrieves the 3D building information model, component geometric attributes, and construction site data from the central data platform through the data integration module, and performs the fusion operation within a unified spatial coordinate framework. For example, the model fusion module can achieve spatial transformation of engineering components from engineering coordinates to the Earth coordinate system based on the mapping matrix between BIM coordinates and GIS geographic coordinates, thus enabling the model to simultaneously present the internal component relationships and the external geographical environment. To address spatial misalignment caused by abrupt terrain changes, foundation settlement, and multi-source noise in water conservancy engineering scenarios, the anomaly correlation correction module can automatically correct areas of components with abnormal displacement or rotation based on the component's historical change sequence, point cloud distribution trends, and terrain constraints, ensuring the fused model maintains geometric logical consistency even under multi-source data conflicts.

[0058] During the quality acceptance phase, the quality acceptance terminal invokes the fusion model and performs component-level deviation comparison based on on-site measured data. The measured data comparison module matches and filters the component's design parameters with their corresponding construction measured parameters to pinpoint dimensional deviations, positional deviations, and installation deviations. The deviation analysis module further performs statistical analysis on the comparison results, exemplarily calculating deviation vectors, deviation distribution diagrams, component compliance rates, and out-of-limit markers, and executes automatic judgment logic according to engineering quality standards. The acceptance result generation module appends the acceptance conclusions in structured data form to the corresponding component in the fusion model, enabling traceable management of acceptance information and generating a digital acceptance report for subsequent data delivery. For example,... Figure 3 As shown, the specific ways to display a digital acceptance report may include, but are not limited to, terminal display and print display.

[0059] During the project operation phase, the operation and maintenance management terminal retrieves the accepted fusion model from the central data platform and performs facility location, equipment operation status recording, maintenance cycle reminders, and linkage with historical maintenance records based on the spatial location and attribute information of components in the model. For example, when operation and maintenance personnel locate a certain equipment component through the fusion model, the operation and maintenance management terminal can automatically retrieve its acceptance records, historical maintenance records, and operating environment parameters, and generate operation and maintenance work guidelines, so that the operation and maintenance process is seamlessly connected with the construction phase data, forming a complete data link.

[0060] During the project delivery phase, the data delivery terminal accesses multi-source data stored in the central data platform, including 3D building information models, component geometric attribute information, construction site data, fused models, and acceptance results. This data is then categorized and organized through the data archiving module. The format conversion module converts data from different stages into a unified format conforming to digital delivery standards, such as CIM standard format, IFC format, CityGML format, or water conservancy industry electronic archive format. The delivery generation module further generates delivery results based on the formatted data, ensuring that the project's modeling data, construction data, acceptance data, and operation management data are delivered as a complete system to the responsible unit, achieving digital asset accumulation throughout the entire lifecycle of the water conservancy project.

[0061] With the cooperation of the aforementioned terminals, the system provided in this embodiment forms a unified data link throughout the entire process of water conservancy projects, from design, construction, acceptance to operation and maintenance and delivery. The entire system's operation flow is as follows: the design integration terminal first establishes a 3D building information model consistent with the geographic coordinate system and generates component parameters; subsequently, the construction acquisition terminal collects on-site data during construction and maps it to the 3D model coordinate system; the model fusion terminal processes the design model, component attributes, and construction data in a unified manner and generates a fused model; the quality acceptance terminal compares the deviations of component quality based on the fused model and generates acceptance results; the operation and maintenance management terminal calls the accepted fused model to perform spatial positioning and status management during project operation; finally, the data delivery terminal standardizes the format of the aforementioned models and business data and outputs digital delivery results, enabling the entire project's construction data to fully enter the digital delivery stage. Through this process, this embodiment achieves full-process digital connectivity of water conservancy projects from modeling to delivery, ensuring consistency, traceability, and shareability of project data, and significantly improving the level of digital management of water conservancy projects.

[0062] Example 2: This example should be understood as including at least all the features of any of the foregoing examples, and further improving upon them.

[0063] In a preferred embodiment, the anomaly correlation correction module in the model fusion terminal identifies and corrects spatial drift-type deviations for water conveyance tunnel sections with significant subsurface depth and areas with complex construction measures such as temporary cofferdams and steel trestle bridges nearby. After obtaining the BIM-GIS corresponding point deviations for each local area in the current fusion model, the anomaly correlation correction module calculates a spatial drift-type deviation risk index R for each local area i. i .

[0064] In this embodiment, the anomaly correlation correction module is further based on the risk indicator R. iThe size of the risk level determines the risk level of each local area in the fusion model, dividing them into low-risk, medium-risk, and high-risk zones. For high-risk zones, the module automatically triggers a local geographic constraint search mechanism, retrieving nearby control elevation points, riverbed cross-sections, or ground control points from the GIS terrain model to form a regional constraint set S(i). Then, through backtracking the spatial location of components, the coordinates of the current component's corresponding point in the fusion model are optimally matched with the control points in the regional constraint set S(i) to reduce model offsets caused by construction data interference. In certain scenarios, such as when the removal of cofferdams or the relocation of steel trestle bridges causes abrupt changes in the regional control benchmark, the anomaly correlation correction module can also combine control point timestamps and use gradient prediction to determine the persistence of terrain changes, thereby avoiding misjudging temporary disturbances as persistent offsets.

[0065] In this embodiment, when the anomaly correlation correction module identifies spatial drift-type deviations in local region i, it first constructs a regional geometric stability index based on the geometric change sequence of historical component versions, the environmental change sequence, the point cloud density change, and the offset vector in the current fusion model. Environmental disturbance indicators Point cloud reliability indicators and normalized offset index Based on this, a spatial drift-type deviation risk index was calculated. .

[0066] For the geometric stability index, the anomaly correlation correction module statistically analyzes the changes in the geometric parameters of the component within a local time window. Let's assume that at time step... When, the geometric parameter vector of local region i is This includes the component's center coordinates, key node coordinates, elevation, and attitude angle; then the geometric change between adjacent time points is... In length of Within the time window, the geometric stability index is defined as:

[0067] ;

[0068] in, Represents the L2 norm, To prevent tiny positive numbers with a denominator of zero. The larger the value, the more frequently the geometry of the area has changed in historical versions, the lower the "design credibility" of the component positions, and the more likely it is to have spatial mismatch risks caused by model changes.

[0069] For environmental disturbance indicators, the anomaly correlation correction module constructs an environmental change sequence based on on-site monitoring data. (Set at time step...) At that time, the environmental parameters corresponding to region i (e.g., water level, riverbed elevation, or cofferdam displacement) are: Then the environmental change is Within the same time window, the environmental disturbance index is defined as:

[0070] ;

[0071] in, This is a scaling constant used to normalize environmental changes. To prevent tiny positive numbers with a denominator of zero; It is a hyperbolic tangent function used to compress the intensity of environmental disturbances to a specific value. Interval. The larger the value, the more drastic the changes in construction measures such as riverbeds, cofferdams, or steel trestle bridges in the vicinity, and the more significant the disturbance to the spatial reference.

[0072] For point cloud reliability metrics, the anomaly correlation correction module assesses the reliability of local 3D data based on changes in point cloud density. Let's assume a time step... When, the number of point clouds per unit volume in region i is Under the baseline operating conditions, the reference point cloud density is The average density within the current window is then... The point cloud reliability metric is defined as follows:

[0073] ;

[0074] in, Parameters used to control the sensitivity to changes in point cloud density. A value close to 1 indicates that the point cloud density in the current area is close to the reference working condition, and the 3D data is relatively complete and reliable. A value close to 0 indicates that the point cloud is severely sparse or degraded, and the reliability of spatial information within the region is low.

[0075] For the spatial offset of local region i in the current fusion model, the anomaly correlation correction module measures it using the offset vector between the component's spatial reference point and the geographic control point. Let the coordinates of the component's reference point in the current fusion model be... The corresponding reference geographic control point coordinates are Then the offset vector is And define the normalized offset metric:

[0076] ;

[0077] in, The characteristic length associated with region i (e.g., the design diameter or cross-sectional characteristic scale of the water conveyance tunnel section). It is a small positive number. It reflects the relative magnitude of local component offset with respect to its own scale, and is used to distinguish between minor offsets and significant misalignments.

[0078] In obtaining , , and Subsequently, the anomaly correlation correction module constructs a spatial drift-type deviation risk index. It employs a nonlinear combination method to couple geometric instability, environmental disturbance intensity, and normalized offset, while utilizing point cloud reliability to suppress overall risk. Specifically, it can be defined as:

[0079] ;

[0080] in, To adjust the positive parameters that influence the weights of different factors, It is a non-linear amplification index. The point cloud reliability suppression index is the factor influencing the denominator. To prevent tiny positive numbers with a denominator of zero. Therefore, when the local region experiences frequent geometric changes, significant environmental disturbances, and a large normalization offset, the numerator term increases significantly, leading to... A value close to 1 indicates a high risk of spatial drift; when the point cloud reliability is... When the value is high, the increase in the denominator will suppress the overall risk, so that occasional deviations supported by high-quality measurement data will not be misjudged as high-risk areas.

[0081] Based on the above risk indicators, the anomaly correlation correction module can set two thresholds. and (satisfy ), dividing the local area into low-risk, medium-risk, and high-risk zones: when When, region i is marked as a low-risk area, spatial correction is not triggered; when When this occurs, region i is marked as a medium-risk area, prompting manual review or a mild correction strategy; when When a region i is marked as a high-risk area, a spatial self-recovery correction process based on local geographical constraints is automatically triggered. In this way, the system can make differentiated responses to different degrees of spatial drift in complex hydraulic environments, avoiding a rigid, one-size-fits-all correction strategy.

[0082] When performing spatial correction on high-risk areas, the anomaly correlation correction module extracts a set of geographic control points adjacent to region i from the GIS terrain model and control network. ,in Let j be the three-dimensional coordinates of the j-th control point. This represents the number of available control points within the area. Based on the current component reference point. Define the control point weights based on the spatial distance between each control point:

[0083] ;

[0084] in, This is a spatial scale parameter representing the area of ​​influence of the control point. The closer the control point is to the current location of the component, the higher the weight. The larger the value, the stronger its impact on subsequent correction results. Based on the weighted control point coordinates, the anomaly correlation correction module obtains the target location of the component under geographical constraints. :

[0085] ;

[0086] And thus the original corrected displacement vector is obtained. This is used to converge the component positions in the current fusion model to the "most reliable position" of the control point constraints.

[0087] To avoid overcorrection in scenarios involving abrupt terrain changes or rapid changes in the construction environment, this embodiment uses the original correction displacement... Based on this, a self-healing correction quantity is introduced. And it adapts to the risk level. For example, the self-recovery correction amount can be defined as:

[0088] ;

[0089] in, This is the self-healing correction amount after the previous iteration. This is the result of this iteration. For example, a nonlinear adjustment function that depends on risk indicators can be defined as:

[0090] ;

[0091] in, This is a positive parameter used to control the response sensitivity. When When it is large, Approaching 1, the self-healing correction amount rapidly increases. Convergence; when When the disturbance is small or the environmental disturbance is temporary, If the new correction displacement is smaller, it will be partially retained in the historical correction value. This creates a buffer correction effect with "inertia." Ultimately, the anomaly correlation correction module will... The updated component coordinates are superimposed on the current component position and written back to the fusion model. This allows the fusion model to make timely corrections to real spatial drift in complex hydraulic construction environments, while maintaining necessary stability against instantaneous noise and short-term disturbances.

[0092] The anomaly correlation correction algorithm described in Example 2 can automatically identify spatial drift biases in the fusion model within complex hydraulic environments such as significant riverbed disturbances, frequent cofferdam relocations, and severe interference from steel trestle bridge construction. This allows the fusion model to maintain coordinate consistency and component location reliability even when facing unstable geographic reference benchmarks and significant differences in the quality of multi-source data. This example constructs a quantitative spatial drift risk assessment system by establishing regional geometric stability indicators, environmental disturbance indicators, point cloud reliability indicators, and normalized offset indicators. This ensures that drift identification does not rely on human experience but is automatically determined by the model's own data state. Simultaneously, the weighted correction strategy based on geographic control points and the self-recovery correction mechanism enable the model to possess both sensitivity and stability when correcting biases. It can respond promptly to actual component misalignments while avoiding over-correction under short-term noise and temporary disturbances. Finally, combined with… Figure 4 and Figure 5 As shown, Example 2 significantly improves the spatial consistency of the fusion model in high-risk areas, reduces misjudgments in acceptance due to model drift during the construction phase, and improves the reliability and spatial accuracy of digital acceptance.

[0093] Example 3: This example should be understood as including at least all the features of any of the foregoing examples, and further improving upon them.

[0094] In another preferred embodiment, a BIM+GIS-based digital delivery system for water conservancy projects can be deployed within a data processing system comprised of a central data platform and its associated terminals. This data processing system can consist of one or more computer devices. For example, the computer device includes hardware resources such as a processor, main memory, non-volatile storage devices, communication interfaces, graphics rendering units, and user interaction devices, used to support the entire computational process, including the construction of the fusion model, the execution of deviation analysis algorithms, data archiving format conversion, 3D scene rendering, and processing of terminal interaction commands.

[0095] The processor can be any one of a general-purpose central processing unit (CPU), a graphics processing unit (GPU), a programmable array of logic (FPGA), or a digital signal processor (DSP), or a heterogeneous computing architecture formed by combining multiple of the above processing units. The processor is configured to process the data stream between the design integration terminal, construction acquisition terminal, model fusion terminal, quality acceptance terminal, operation and maintenance management terminal, and data delivery terminal according to instructions stored in main memory or non-volatile storage media, performing tasks such as model merging, spatial deviation calculation, risk indicator assessment, geographical constraint correction, and data conversion. In some embodiments, to support real-time rendering of the fused model, the system may optionally use the GPU to perform component rendering calculations, terrain texture drawing, and visualization processing of large-scale point cloud data, ensuring a smooth interactive experience in complex scenes.

[0096] The main memory can be a high-speed random access memory (RAM) used to store component parameters, construction site data, fusion model cache, and intermediate variables for deviation correction during system operation. Non-volatile storage devices can be solid-state drives (SSDs), hard disk drives (HDDs), flash memory, or optical storage media, used to store 3D building information models, GIS geographic information data, time-series monitoring data, acceptance result files, and digitally delivered deliverables after format conversion. The storage device can further include a project-level database or file index structure to support phased data management, version tracking, and rapid retrieval for large-scale water conservancy projects.

[0097] The system's built-in communication interface supports Ethernet, fiber optic networks, wireless LAN, or industrial communication buses for data transmission between design integration terminals, construction acquisition terminals, model fusion terminals, and operation and maintenance management terminals. The communication interface can be optionally configured with multi-channel data buffers to address data delays or loss caused by unstable environments at water conservancy construction sites, and to resynchronize transmission when the network recovers. For scenarios requiring remote monitoring or cloud collaboration, the system can establish connections with external servers, government cloud platforms, or water conservancy information platforms through the communication interface, enabling cross-regional data exchange and joint operation and maintenance.

[0098] In terms of graphical display, the system may include display devices or graphics rendering terminals to showcase fusion models, spatial deviation distributions, acceptance result status, and operation and maintenance positioning interfaces. Display devices can be LCD monitors, projectors, or VR headsets, supporting the presentation of two-dimensional or three-dimensional views. When it is necessary to section, roam, or zoom in on complex hydraulic structures, the graphics rendering unit can generate interactive scenes in real time to assist in data comparison, acceptance confirmation, and operation and maintenance decisions.

[0099] Input devices may include a keyboard, mouse, touchscreen, laser pointer, or voice input module, allowing users to rotate, measure, select points, position, or correct the model. In some implementations, the system may incorporate a 3D mouse, stylus, or gesture recognition device to provide a more intuitive way to operate when dealing with high-precision geometric models or complex spatial interactions.

[0100] In terms of program execution, the computer device can execute program instructions stored in a non-transitory computer-readable medium. This medium may include a hard disk, optical disk, USB flash drive, ROM chip, flash memory, or other non-transitory storage media. When executed by a processor, the program instructions enable the computer device to perform functions described in this invention, such as establishing a 3D building information model, generating geometric attributes of engineering components, mapping construction site data, BIM-GIS coordinate fusion, identifying spatial drift-type deviations, self-correcting geographical constraints, generating acceptance results, and outputting digital delivery documents. In some embodiments, some instructions may be stored as firmware and embedded in the terminal device, enabling the system to perform basic data acquisition, coordinate mapping, and preliminary deviation comparison in an offline state.

[0101] To improve the overall system stability and scalability, the computer equipment can further support containerized deployment or a microservice architecture, separating model fusion services, data archiving services, deviation analysis services, and operation and maintenance location services. Inter-service communication can be achieved through message queues or other communication mechanisms to adapt to the characteristics of rapid data accumulation, multiple business stages, and wide facility distribution during water conservancy projects. Under this architecture, the central data platform can serve as the system scheduling core, providing unified management of services and ensuring consistent interface specifications and data structures across different stages of the digital delivery process.

[0102] With the support of the aforementioned hardware platform and data processing system, the BIM and GIS-based digital delivery system for water conservancy projects provided in this embodiment can maintain stable operation even under conditions of large model size, complex coordinate system, and significant disturbances in the construction environment, ensuring the consistency, traceability, and deliverability of multi-source data throughout the entire project lifecycle.

[0103] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of protection of the present invention. Furthermore, the elements therein can be updated as technology develops.

Claims

1. A digital delivery system for water conservancy projects based on BIM+GIS, characterized in that, The system includes a central data platform housed within a chassis, and design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals connected to the central data platform. The central data platform provides unified data processing and management for the design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals. The design integration terminals, construction acquisition terminals, model fusion terminals, quality acceptance terminals, operation and maintenance management terminals, and data delivery terminals are connected to the central data platform via internal communication lines, forming a data interaction channel. The design integration terminal is used to establish a 3D building information model that matches the geographic coordinate system, and to generate geometric attribute information of engineering components through parametric methods; the construction acquisition terminal is used to collect construction site data corresponding to the 3D building information model, and to map the construction site data to the coordinate system of the 3D building information model; the model fusion terminal is used to uniformly process the 3D building information model, the geometric attribute information of engineering components, and the construction site data, and to form a fused model through BIM and GIS coordinate association; the quality acceptance terminal is used to compare the deviation of the measured information based on the fused model and generate acceptance results. The operation and maintenance management terminal is used to call the fusion model indicating that the acceptance result has passed the acceptance during the project operation period to perform spatial positioning and status management of the water conservancy project; the data delivery terminal is used to uniformly archive and convert the three-dimensional building information model, the geometric attribute information of the engineering components, the construction site data, the fusion model and the acceptance result into delivery information that conforms to the digital delivery standard.

2. The digital delivery system for water conservancy projects based on BIM+GIS as described in claim 1, characterized in that, The design integration terminal includes a model building module and a parameter generation module; the model building module is used to construct a three-dimensional building information model; the parameter generation module is used to attach geometric attribute information to engineering components in a parametric manner, and automatically update the geometric attribute information of the corresponding engineering components when the three-dimensional building information model changes.

3. The digital delivery system for water conservancy projects based on BIM+GIS as described in claim 2, characterized in that, The construction data acquisition terminal includes a field data acquisition module and a coordinate mapping module. The field data acquisition module is used to collect progress information, measured dimensions of components, and field environmental parameters during the construction process, and integrate them into construction field data. The coordinate mapping module is used to map the construction field data to the coordinate system of the three-dimensional building information model based on the positioning information.

4. The digital delivery system for water conservancy projects based on BIM+GIS as described in claim 3, characterized in that, The model fusion terminal includes a data integration module, a model fusion module, and an anomaly correlation correction module. The data integration module receives and integrates the geometric attribute information of the 3D building information model, engineering components, and construction site data to form a dataset to be fused. The model fusion module performs coordinate unification and spatial element association based on the mapping relationship between the BIM coordinate system and the GIS geographic coordinate system, generating a fused model containing spatial information of engineering components and geographic environment information. The anomaly correlation correction module automatically identifies spatial drift-type deviations based on the historical update sequence of components and environmental change trends during the fusion process, and performs self-recovery correction on suspected misaligned areas through local geographic constraints, so that the fused model maintains spatial consistency in the event of terrain abrupt changes or multi-source data conflicts.

5. A digital delivery system for water conservancy projects based on BIM+GIS as described in claim 4, characterized in that, The quality acceptance terminal includes a measured data comparison module, a deviation analysis module, and an acceptance result generation module. The measured data comparison module is used to call the fusion model and compare it with the on-site measured data to identify deviations in the position and size of the components. The deviation analysis module is used to perform statistical analysis on the comparison results to form component deviation amount, deviation direction, and compliance rate indicators. The acceptance result generation module is used to generate an acceptance report based on the analysis results and associate the acceptance conclusion with the components in the corresponding fusion model to obtain the acceptance result.

6. A digital delivery system for water conservancy projects based on BIM+GIS as described in claim 5, characterized in that, The operation and maintenance management terminal includes a fusion model invocation module, a spatial positioning module, and a status management module; The fusion model calling module is used to retrieve the fusion model that has passed acceptance and serves as the basic model for the operation and maintenance phase; the spatial positioning module is used to realize the spatial positioning of water conservancy engineering components based on the coordinate information provided by the fusion model. The status management module is used to record and update facility operation status information, and realize fault recording, maintenance cycle reminders and equipment status tracking based on the location results, so as to form a continuous link between operation management and acceptance data.

7. A digital delivery system for water conservancy projects based on BIM+GIS as described in claim 6, characterized in that, The data delivery terminal includes a data archiving module, a format conversion module, and a delivery generation module. The data archiving module is used to uniformly organize and classify the 3D building information model, geometric attribute information of engineering components, construction site data, fusion model, and acceptance results. The format conversion module is used to convert the archived data into a data format that conforms to digital delivery standards. The delivery generation module is used to generate delivery information based on the format-converted data.

8. A BIM+GIS-based digital delivery method for water conservancy projects, applied to the BIM+GIS-based digital delivery system for water conservancy projects as described in claim 7, characterized in that, Digital delivery methods for water conservancy projects based on BIM and GIS include: S1. Establish a three-dimensional building information model that matches the geographic coordinate system, and generate the geometric attribute information of the engineering components through parametric methods; S2, collects construction site data corresponding to the 3D building information model, and maps the construction site data to the coordinate system of the 3D building information model; S3 unifies the processing of 3D building information models, geometric attribute information of engineering components and construction site data, and forms a fusion model by associating BIM and GIS coordinates; S4. Based on the fusion model, the measured information is compared for deviation to generate acceptance results; S5, During the project operation period, the fusion model representing the acceptance results is called to perform spatial positioning and status management of the water conservancy project; S6 performs unified archiving and format conversion of 3D building information models, geometric attribute information of engineering components, construction site data, fusion models and acceptance results to form delivery information that conforms to digital delivery standards.

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