A water conservancy project monitoring method and system

Abstract

The present invention discloses a water conservancy project monitoring method and system, which relate to the technical field of water conservancy project monitoring. The method comprises the following steps: analyzing water conservancy project design data to construct a three-dimensional model; performing stress finite element analysis on the three-dimensional model to obtain a finite element analysis model; constructing a water contact simulation surface for the water contact surface of the finite element analysis model, and performing water body characteristic mapping adjustment; inputting the adjusted water contact simulation surface into the finite element analysis model to determine stress parameters of different important blocks; collecting real-time water conservancy characteristic data, constructing a real-time water contact simulation surface, and performing comparative analysis to determine stress parameters of the water conservancy project within unit time, as well as parameters required for inspection of important blocks; and determining inspection strategies for different blocks of the water conservancy project based on the parameters required for inspection. The above technical scheme of the present invention realizes the optimization of the inspection strategy and avoids the aggravation of damage to the water conservancy project due to missed inspection.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy project monitoring, and in particular to a water conservancy project monitoring method and system. Background Art

[0002] Water conservancy projects, as key infrastructure supporting national economic development and social stability, are exposed to the natural environment for a long time, especially the continuous impact of water bodies, which makes their structural safety face huge challenges. The impact of water bodies on water conservancy projects is not only manifested as direct water flow scouring, but also includes complex dynamic effects caused by water level changes, water flow velocity fluctuations, and water pressure changes. These dynamic effects often lead to stress changes in important blocks within the project, which may cause structural damage and seriously threaten the safe operation of water conservancy projects. Traditional monitoring methods, such as manual inspections and regular inspections, have the possibility of missed inspections. In order to avoid the aggravation of damage caused by missed inspections, a water conservancy project monitoring method that can optimize the inspection strategy is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide a water conservancy project monitoring method and system capable of optimizing inspection strategies.

[0004] The invention discloses a water conservancy project monitoring method, comprising:

[0005] Analyze the design data of water conservancy projects, construct a 3D model of the water conservancy project, and calibrate important blocks of the 3D model of the water conservancy project based on the preset important structure catalog;

[0006] Conduct stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project;

[0007] Construct a water contact simulation surface for the water contact surface of the finite element analysis model of the water conservancy project, analyze the water conservancy characteristic data, and adjust the water characteristic mapping of the water contact simulation surface based on the analysis results;

[0008] The adjusted water contact simulation surface is used as model input data and input into the finite element analysis model of the water conservancy project to determine the stress parameters of different important blocks of the three-dimensional model of the water conservancy project in unit time, and the correlation between the water contact simulation surface and the stress parameters is established to obtain the corresponding set of water simulation surface / stress parameters;

[0009] Collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the corresponding set of water body simulation surface / stress parameter for comparison and analysis. Based on the level of the matching parameters, determine the stress parameters of the water conservancy project per unit time, and based on the cumulative sum of the stress parameters over time, determine the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project;

[0010] Based on the inspection parameters of important blocks, the inspection strategies for different blocks of water conservancy projects are determined.

[0011] In some embodiments of the present invention, the method for performing stress finite element analysis on a three-dimensional model of a water conservancy project includes:

[0012] The three-dimensional model of the water conservancy project is meshed to obtain a number of unit meshes, and the unit meshes are connected by nodes to form a number of discretized unit aggregates;

[0013] Based on the design data of water conservancy projects, material parameters are configured for different unit assemblies, including elastic modulus, Poisson's ratio and material density;

[0014] Boundary conditions are configured for the three-dimensional model of the water conservancy project, and water pressure loads are applied to the water contact surface on the three-dimensional model of the water conservancy project.

[0015] In some embodiments of the present invention, the method for adjusting the water body feature mapping of the water body contact simulation surface includes:

[0016] A number of water pressure monitoring devices are randomly set on the water contact surface of the water conservancy project, and water pressure monitoring points are set at positions corresponding to the water contact simulation surface based on the positions of the water pressure monitoring devices relative to the water contact surface;

[0017] Using a water pressure monitoring device to monitor water pressure change data in real time, and constructing a comprehensive water pressure change curve based on the water pressure change data, and associating the comprehensive water pressure change data with corresponding water pressure monitoring points;

[0018] Determine the curve components with amplitudes greater than or equal to the preset value in each comprehensive water pressure change curve to obtain several effective water pressure change curves, scan and analyze the effective water pressure change curves corresponding to all water pressure monitoring points, determine the effective change curve with the earliest starting fluctuation, determine the earliest starting time node corresponding to the effective change curve with the earliest starting fluctuation, and determine the starting time nodes of other effective change curves;

[0019] The water pressure monitoring node corresponding to the effective change curve of the earliest starting fluctuation is determined and recorded as the central water pressure monitoring node. A water impact range circle is constructed with the central water pressure monitoring node as the center, and the water impact range circle is gradually expanded. Each time the water impact range circle is gradually expanded, the water pressure monitoring nodes within the preset range inside the edge of the water impact range circle are located, and the combination of the effective change water pressure change curves of the located water pressure monitoring nodes is recorded as the same circle layer effective water pressure change curve group;

[0020] The effective water pressure change curves between each water pressure monitoring node in the same circle effective water pressure change curve group are screened for equality, and the effective water pressure change curves that do not meet the requirements are eliminated;

[0021] The amplitude and frequency of the effective water pressure change curves in the effective water pressure change curve group of the same circle are analyzed to obtain the water shock parameter. If the water shock parameter is less than or equal to the preset value, the water shock range circle corresponding to the effective water pressure change curve group of the same circle is regarded as the reference water shock range circle;

[0022] Based on the reference water impact range circle and the effective water pressure change curve corresponding to the central water pressure monitoring node, the water body characteristic mapping is adjusted for the water body contact simulation surface.

[0023] In some embodiments of the present invention, the method for performing equivalence screening on the effective water pressure change curves between each water pressure monitoring point in the same circle effective water pressure change curve group includes:

[0024] Randomly select a number of effective water pressure change curves from the effective water pressure change curve group of the same circle layer, and record the selected effective water pressure change curves as random effective water pressure change curves;

[0025] Each random effective water pressure change curve selected is combined and compared with other different effective water pressure change curves. If the two are consistent, the random effective water pressure change curve is recorded as consistent once;

[0026] The number of matching records of each random effective water pressure change curve is counted to obtain the total matching number, and the random effective water pressure change curve with the largest total matching number is selected as the marker water pressure change curve;

[0027] The effective water pressure change curve is compared with the mark water pressure change curve respectively. If they match, the effective water pressure change curve is classified as equivalent.

[0028] In some embodiments of the present invention, a method for adjusting water body characteristic mapping of a water body contact simulation surface based on a reference water impact range circle and an effective water pressure change curve corresponding to a central water pressure monitoring node includes:

[0029] An arc-shaped water pressure expression model is set for a block corresponding to a reference water impact range circle on a water contact simulation surface. The arc-shaped water pressure expression model is an arc-shaped surface. The center height is adjusted according to the fluctuation amplitude of the effective water pressure change curve, and the fluctuation period of the arc-shaped surface is adjusted according to the curve period of the effective water pressure change curve.

[0030] The edges between different arc-shaped water pressure representation models on the water contact simulation surface are smoothly connected to obtain the water contact simulation surface after mapping adjustment.

[0031] In some embodiments of the present invention, the method for determining stress parameters of different important blocks of a three-dimensional model of a water conservancy project includes:

[0032] Several real-time hydraulic contact simulation surfaces are used as model input data and respectively input into the hydraulic engineering finite element analysis model for stress analysis to determine the stress dynamic performance of different important blocks;

[0033] Several stress comparison intervals are set for different important blocks. Each stress comparison interval corresponds to a preset unit stress parameter. The dynamic performance of stress is analyzed to determine the mapping time length of the dynamic performance of stress in different stress comparison intervals. Combined with the unit stress parameter corresponding to the stress comparison interval, the stress parameters of the important blocks are calculated.

[0034] In some embodiments of the present invention, a method for substituting the real-time water body contact simulation surface into the water body simulation surface / stress parameter corresponding set for comparison and analysis includes:

[0035] Performing simulation surface feature analysis on the real-time water contact simulation surface, including determining the focus area where the central water pressure monitoring node exists, and the diameter of the water impact range circle corresponding to each central water pressure monitoring node;

[0036] The determined focus block and the diameter of the water impact range circle are used as screening conditions to screen the corresponding set of water body simulation surface / stress parameter, and several corresponding groups of water body simulation surface / stress parameter are screened out. The real-time water body contact simulation surface and the water body simulation surface in each water body simulation surface / stress parameter corresponding group are compared for consistency, and based on the comparison results, the corresponding parameters are determined.

[0037] In some embodiments of the present invention, the method of calculating the coincident parameter includes:

[0038] Compare the relative distances between the central water pressure monitoring nodes of the same concerned blocks, compare the diameter differences between the water impact range circles, and compare the fluctuation period differences between the water impact range circles;

[0039] Based on the relative distance between nodes, diameter difference and fluctuation period difference, the matching parameters are determined;

[0040] Among them, the expression for calculating the coincident parameter is: ; in, For the matching parameters, For the The difference in the fluctuation period between the water impact range circles, is the fluctuation period difference adjustment coefficient, Fluctuation cycle difference adjustment constant, is the preset maximum relative distance between nodes, is the relative distance between the central water pressure monitoring nodes, is the weight adjustment coefficient of the relative distance between nodes, is the preset maximum diameter difference, For the The diameter difference between the water impact range circles, is the diameter difference weight adjustment coefficient, It is the total number of central water pressure monitoring nodes or water impact range circles participating in the comparison within a water contact simulation surface.

[0041] In some embodiments of the present invention, there is also disclosed a water conservancy project monitoring system, comprising:

[0042] The first module is used to analyze the design data of the water conservancy project, build a three-dimensional model of the water conservancy project, and calibrate important blocks of the three-dimensional model of the water conservancy project based on the preset important structure catalog;

[0043] The second module is used to perform stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project;

[0044] The third module is used to construct a water contact simulation surface for the water contact surface of the finite element analysis model of the water conservancy project, analyze the water conservancy characteristic data, and adjust the water characteristic mapping of the water contact simulation surface based on the analysis results;

[0045] The fourth module is used to input the adjusted water contact simulation surface as model input data into the finite element analysis model of the water conservancy project, determine the stress parameters of different important blocks of the three-dimensional model of the water conservancy project in unit time, and establish the correlation between the water contact simulation surface and the stress parameters to obtain the corresponding set of water simulation surface / stress parameters;

[0046] The fifth module is used to collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the corresponding set of water body simulation surface / stress parameter for comparison and analysis, and determine the stress parameters of the water conservancy project per unit time based on the level of the matching parameters, and determine the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project based on the cumulative sum of the stress parameters over time;

[0047] The sixth module is used to determine the inspection strategy for different blocks of the water conservancy project based on the inspection parameters required for important blocks.

[0048] The present invention discloses a water conservancy project monitoring method and system, which relate to the technical field of water conservancy project monitoring. The method comprises the following steps: analyzing water conservancy project design data to construct a three-dimensional model; performing stress finite element analysis on the three-dimensional model to obtain a finite element analysis model; constructing a water contact simulation surface for the water contact surface of the finite element analysis model, and performing water body characteristic mapping adjustment; inputting the adjusted water contact simulation surface into the finite element analysis model to determine stress parameters of different important blocks; collecting real-time water conservancy characteristic data, constructing a real-time water contact simulation surface, and performing comparative analysis to determine stress parameters of the water conservancy project within unit time, as well as parameters required for inspection of important blocks; and determining inspection strategies for different blocks of the water conservancy project based on the parameters required for inspection. The above technical scheme of the present invention realizes the optimization of the inspection strategy and avoids the aggravation of damage to the water conservancy project due to missed inspection.

[0049] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A method step diagram of a water conservancy project monitoring method disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0052] The following will be combined with the accompanying drawings and specific embodiments to clearly and completely describe the technical solution of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and cannot be understood as limiting the scope of protection of the present invention. Those skilled in the art in this field can make some non-essential improvements and adjustments based on the content of the present invention described below. In the present invention, unless otherwise clearly specified and limited, the technical terms used in the present invention should be the common meanings understood by the technical personnel described in the present invention.

[0053] Example:

[0054] The purpose of the present invention is to provide a water conservancy project monitoring method and system capable of optimizing inspection strategies.

[0055] The present invention discloses a water conservancy project monitoring method, referring to Figure 1 ,include:

[0056] Step S100, analyzing the water conservancy project design data, constructing a three-dimensional model of the water conservancy project, and calibrating important blocks of the three-dimensional model of the water conservancy project based on a preset important structure catalog.

[0057] This step is based on the design data of the water conservancy project, using technologies such as computer-aided design (CAD) or building information modeling (BIM) to build a three-dimensional digital model of the water conservancy project. The model can accurately reflect the structure, size, material and other characteristics of the water conservancy project. Subsequently, according to the preset important structure catalog (such as the dam body, gates, spillways, etc.), these key areas are marked in the three-dimensional model to provide a basis for subsequent analysis.

[0058] Step S200, performing stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project.

[0059] Finite Element Analysis (FEA) is a method that discretizes a complex structure into a combination of a finite number of simple units, and approximates the mechanical behavior of the entire structure by solving the mechanical behavior of these units. In the field of water conservancy engineering, finite element analysis is widely used to evaluate the stress distribution, deformation, etc. of the structure under stress. In this step, the three-dimensional model is imported into the finite element analysis software, and the boundary conditions, loading conditions, etc. are set. The stress distribution, deformation and other parameters of the water conservancy engineering structure under stress are obtained through calculation.

[0060] In some embodiments of the present invention, the method for performing stress finite element analysis on a three-dimensional model of a water conservancy project includes:

[0061] Step S201, meshing the three-dimensional model of the water conservancy project to obtain a number of unit meshes, and connecting the unit meshes by nodes to form a number of discretized unit aggregates.

[0062] Meshing is a basic step in finite element analysis, and its purpose is to discretize the continuous three-dimensional model of a water conservancy project into a combination of a finite number of simple units. In this process, the model is divided into several unit grids, each of which is connected by multiple nodes to form a number of discrete unit collections. The quality of meshing directly affects the accuracy and efficiency of subsequent finite element analysis. Therefore, it is necessary to select an appropriate mesh size, shape, and density to balance the calculation accuracy and calculation cost.

[0063] Step S202, based on the water conservancy project design data, configure material parameters for different unit assemblies, including elastic modulus, Poisson's ratio and material density.

[0064] In finite element analysis, material parameters are important inputs for describing the mechanical properties of materials. For different unit assemblies in the three-dimensional model of a hydraulic project, it is necessary to configure the corresponding material parameters according to the hydraulic project design data. These parameters usually include elastic modulus (describing the material's ability to resist deformation), Poisson's ratio (describing the ratio of lateral deformation to longitudinal deformation of a material when subjected to stress), and material density (describing the mass per unit volume of a material). The accurate configuration of these parameters is crucial for accurately simulating the stress distribution and deformation of a structure under stress.

[0065] Step S203, configuring boundary conditions for the three-dimensional model of the water conservancy project, and applying a water pressure load to the water contact surface on the three-dimensional model of the water conservancy project.

[0066] Boundary conditions are important conditions for describing the interaction between structure and environment in finite element analysis. In the finite element analysis of the three-dimensional model of a water conservancy project, reasonable boundary conditions need to be configured to simulate the stress state of the structure in actual operation. At the same time, since water conservancy projects are usually in direct contact with water bodies, it is necessary to apply a water pressure load on the water contact surface of the model. This load is usually determined based on the depth, flow rate, water pressure and other characteristics of the water body, and changes with time and space. By configuring boundary conditions and applying water pressure loads, the stress conditions of water conservancy projects in actual operation can be simulated, providing an accurate basis for subsequent stress analysis and inspection strategy formulation.

[0067] Step S300, constructing a water contact simulation surface for the water contact surface of the finite element analysis model of the water conservancy project, analyzing the water conservancy characteristic data, and performing water characteristic mapping adjustment on the water contact simulation surface based on the analysis result.

[0068] This step builds a water contact simulation surface for the structural surface in contact with the water body based on the finite element analysis model. This simulation surface can simulate the interaction between the water body and the structural surface. Subsequently, the water contact simulation surface is mapped and adjusted according to real-time or historical hydraulic characteristic data (such as water level, flow rate, water pressure, etc.) to reflect the actual effect of the water on the structural surface under different working conditions.

[0069] In some embodiments of the present invention, the method for adjusting the water body feature mapping of the water body contact simulation surface includes:

[0070] Step S301, randomly setting a number of water pressure monitoring devices on the water contact surface of the water conservancy project, and setting water pressure monitoring points at positions corresponding to the water contact simulation surface based on the positions of the water pressure monitoring devices relative to the water contact surface.

[0071] The purpose of this step is to set up a water pressure monitoring device on the actual water body contact surface of the water conservancy project, and set up corresponding monitoring points on the simulation surface. In this way, the actual monitored water pressure data can be associated with the points on the simulation surface, providing a basis for subsequent data analysis and mapping adjustments.

[0072] Step S302: monitor the water pressure change data in real time using a water pressure monitoring device, construct a comprehensive water pressure change curve based on the water pressure change data, and associate the comprehensive water pressure change data with corresponding water pressure monitoring points.

[0073] The purpose of using a water pressure monitoring device to monitor water pressure changes in real time is to obtain accurate water pressure data. Constructing a comprehensive water pressure change curve helps to intuitively observe the trend of water pressure changes over time. Associating water pressure change data with corresponding monitoring points is to accurately reflect actual water pressure changes on the simulation surface.

[0074] Step S303, determine the curve components with amplitudes greater than or equal to a preset value in each comprehensive water pressure change curve, obtain several effective water pressure change curves, scan and analyze the effective water pressure change curves corresponding to all water pressure monitoring points, determine the effective change curve with the earliest starting fluctuation, determine the earliest starting time node corresponding to the effective change curve with the earliest starting fluctuation, and determine the starting time nodes of other effective change curves.

[0075] The purpose of determining the effective water pressure change curve is to screen out the curve that has a significant impact on the water impact. By scanning and analyzing the effective curves of all monitoring points, the starting time and propagation order of the water impact can be determined, providing a basis for the subsequent water impact range analysis.

[0076] Step S304, determine the water pressure monitoring node corresponding to the effective change curve of the earliest starting fluctuation, record it as the central water pressure monitoring node, construct a water shock range circle with the central water pressure monitoring node as the center, and gradually expand the water shock range circle. Each time the water shock range circle is gradually expanded, locate the water pressure monitoring node within a preset range inside the edge of the water shock range circle, and record the combination of the effective change water pressure change curves of the located water pressure monitoring nodes as the same circle effective water pressure change curve group.

[0077] The purpose of determining the central water pressure monitoring node is to find the starting point or main impact point of the water impact. The purpose of constructing a water impact range circle with the central node as the center and gradually expanding it is to analyze the propagation range and impact degree of the water impact. The purpose of locating the water pressure monitoring nodes in the same circle is to obtain the water pressure change data in the same circle for subsequent analysis and comparison.

[0078] Step S305, performing equality screening on the effective water pressure change curves between each water pressure monitoring node in the same circle effective water pressure change curve group, and removing the effective water pressure change curves that do not meet the requirements.

[0079] The purpose of screening the effective water pressure change curves in the same circle for equality is to eliminate those curves that are significantly different from other curves in terms of amplitude, frequency, etc. This ensures that the water pressure change curves analyzed later are representative and can accurately reflect the characteristics of water impact.

[0080] In some embodiments of the present invention, the method for performing equivalence screening on the effective water pressure change curves between each water pressure monitoring point in the same circle effective water pressure change curve group includes:

[0081] Step S3051: randomly select a number of effective water pressure change curves from the effective water pressure change curve group of the same circle layer, and record the selected effective water pressure change curves as random effective water pressure change curves.

[0082] Step S3052, combining and comparing each of the selected random effective water pressure change curves with other different effective water pressure change curves, if the two are consistent, then recording a consistent random effective water pressure change curve.

[0083] Step S3053, counting the number of matching records of each random effective water pressure change curve to obtain a total number of matching records, and selecting the random effective water pressure change curve with the largest total number of matching records as the marker water pressure change curve.

[0084] Step S3054, comparing the effective water pressure change curve with the mark water pressure change curve respectively, if they match, the effective water pressure change curve is classified as equivalent.

[0085] Step S306, analyzing the amplitude and frequency of the effective water pressure change curve in the same circle effective water pressure change curve group to obtain the water shock parameter. If the water shock parameter is less than or equal to the preset value, the water shock range circle corresponding to the same circle effective water pressure change curve group is regarded as the reference water shock range circle.

[0086] The purpose of analyzing the amplitude and frequency of the effective water pressure change curve in the same circle is to obtain the water impact parameter. This parameter can reflect the intensity and frequency characteristics of water impact. If the water impact parameter is less than or equal to the preset value, it means that the water impact in the circle has little effect on the simulation surface, and the corresponding water impact range circle can be used as a reference range.

[0087] Step S307 , based on the reference water impact range circle and the effective water pressure change curve corresponding to the central water pressure monitoring node, water body characteristic mapping adjustment is performed on the water body contact simulation surface.

[0088] Based on the reference water impact range circle and the effective water pressure change curve corresponding to the central water pressure monitoring node, the water body contact simulation surface is adjusted for water body characteristic mapping. The purpose of this step is to accurately map the actual monitored water pressure change data onto the simulation surface so that the simulation surface can more realistically reflect the impact of the actual water body impact. By adjusting the water body characteristics of the simulation surface, the accuracy and reliability of the water conservancy project simulation can be improved.

[0089] In some embodiments of the present invention, a method for adjusting water body characteristic mapping of a water body contact simulation surface based on a reference water impact range circle and an effective water pressure change curve corresponding to a central water pressure monitoring node includes:

[0090] Step S3071, setting an arc-shaped water pressure expression model for the block corresponding to the reference water impact range circle on the water contact simulation surface, wherein the arc-shaped water pressure expression model is an arc-shaped surface, adjusting the center height according to the fluctuation amplitude of the effective water pressure change curve, and adjusting the fluctuation period of the arc-shaped surface according to the curve period of the effective water pressure change curve.

[0091] Step S3072, smoothly transition the edges between different arc-shaped water pressure representation models on the water contact simulation surface to obtain a water contact simulation surface after mapping adjustment.

[0092] Step S400, using the adjusted water body contact simulation surface as model input data, inputting it into the finite element analysis model of the water conservancy project, determining the stress parameters of different important blocks of the three-dimensional model of the water conservancy project within unit time, and establishing a correlation between the water body contact simulation surface and the stress parameters, to obtain a corresponding set of water body simulation surface / stress parameters.

[0093] The adjusted water contact simulation surface is used as input data and re-imported into the finite element analysis model for calculation and solution. In this step, the focus is on the stress changes caused by the impact of water on the structural surface under different working conditions. Through calculation, the stress parameters of different important blocks of the three-dimensional model of the water conservancy project can be determined per unit time. At the same time, the correlation between the water contact simulation surface and the stress parameters is established, that is, how the changes in water characteristics affect the distribution and size of structural stress. This correlation is usually presented in the form of a mathematical model or a data table.

[0094] In some embodiments of the present invention, the method for determining stress parameters of different important blocks of a three-dimensional model of a water conservancy project includes:

[0095] Step S401, inputting a number of real-time hydraulic contact simulation surfaces as model input data into a hydraulic engineering finite element analysis model for stress analysis to determine the stress dynamic performance of different important blocks.

[0096] Step S402, a number of stress comparison intervals are set for different important blocks, each stress comparison interval corresponds to a preset unit stress parameter, the stress dynamic performance is analyzed, the mapping time length of the stress dynamic performance mapped in different stress comparison intervals is determined, and the stress parameters of the important blocks are calculated in combination with the unit stress parameters corresponding to the stress comparison intervals.

[0097] Step S500, collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the water body simulation surface / stress parameter corresponding set for comparison and analysis, and determine the stress parameters of the water conservancy project per unit time based on the level of the matching parameters, and determine the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project based on the cumulative sum of the stress parameters over time.

[0098] This step collects the characteristic data of the water conservancy project (such as water level, flow rate, water pressure, etc.) in real time through sensor networks, telemetry technology, etc. Subsequently, a real-time water contact simulation surface is constructed based on the real-time data, and it is substituted into the corresponding set of water simulation surface / stress parameters established in step S400 for comparison and analysis. Through comparison and analysis, the stress parameters of the water conservancy project and the parameters that need to be inspected in important blocks (such as stress change rate, number of times exceeding the warning value, etc.) under the current working conditions can be determined. These parameters will serve as an important basis for evaluating the safety of water conservancy projects and formulating inspection strategies.

[0099] In some embodiments of the present invention, a method for substituting the real-time water body contact simulation surface into the water body simulation surface / stress parameter corresponding set for comparison and analysis includes:

[0100] Step S501 , performing simulation surface feature analysis on the real-time water contact simulation surface, including determining the focus block where the central water pressure monitoring node exists, and the diameter of the water impact range circle corresponding to each central water pressure monitoring node.

[0101] In step S502, the determined focus block and the diameter of the water impact range circle are used as screening conditions to screen the corresponding set of water body simulation surface / stress parameters, screen out several corresponding groups of water body simulation surface / stress parameters, compare the real-time water body contact simulation surface with the water body simulation surface in each corresponding group of water body simulation surface / stress parameters, and determine the matching parameters based on the comparison results.

[0102] In some embodiments of the present invention, the method of calculating the coincident parameter includes:

[0103] Step S5021, comparing the relative distances between the central water pressure monitoring nodes of the same focus block, comparing the diameter differences between the water impact range circles, and comparing the fluctuation period differences between the water impact range circles.

[0104] Step S5022, determining the matching parameters based on the relative distance between nodes, the diameter difference and the fluctuation period difference.

[0105] Among them, the expression for calculating the coincident parameter is: . in, For the matching parameters, For the The difference in the fluctuation period between the water impact range circles, is the fluctuation period difference adjustment coefficient, Fluctuation cycle difference adjustment constant, is the preset maximum relative distance between nodes, is the relative distance between the central water pressure monitoring nodes, is the weight adjustment coefficient of the relative distance between nodes, is the preset maximum diameter difference, For the The diameter difference between the water impact range circles, is the diameter difference weight adjustment coefficient, It is the total number of central water pressure monitoring nodes or water impact range circles participating in the comparison within a water contact simulation surface.

[0106] Step S600, based on the inspection parameters of important blocks, determine the inspection strategy for different blocks of the water conservancy project.

[0107] Based on the inspection parameters of important blocks, combined with the actual situation of water conservancy projects and inspection resources, a reasonable inspection strategy should be formulated. The strategy should clearly define the inspection frequency, inspection content, inspection methods, etc., to ensure that potential safety hazards can be discovered and handled in a timely manner. At the same time, the inspection strategy should also be dynamically adjusted based on the feedback of real-time monitoring data to cope with various changes in the operation of water conservancy projects.

[0108] In some embodiments of the present invention, there is also disclosed a water conservancy project monitoring system, comprising:

[0109] The first module is used to analyze the design data of the water conservancy project, construct a three-dimensional model of the water conservancy project, and calibrate important blocks of the three-dimensional model of the water conservancy project based on a preset directory of important structures.

[0110] The second module is used to perform stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project.

[0111] The third module is used to construct a water contact simulation surface for the water contact surface of the finite element analysis model of the water conservancy project, analyze the water conservancy characteristic data, and adjust the water characteristic mapping of the water contact simulation surface based on the analysis results.

[0112] The fourth module is used to input the adjusted water body contact simulation surface as model input data into the finite element analysis model of the water conservancy project, determine the stress parameters of different important blocks of the three-dimensional model of the water conservancy project per unit time, and establish the correlation between the water body contact simulation surface and the stress parameters to obtain the corresponding set of water body simulation surface / stress parameters.

[0113] The fifth module is used to collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the corresponding set of water body simulation surface / stress parameter for comparison and analysis. Based on the high and low levels of matching parameters, the stress parameters of the water conservancy project per unit time are determined, and based on the cumulative sum of the stress parameters over time, the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project are determined.

[0114] The sixth module is used to determine the inspection strategy for different blocks of the water conservancy project based on the inspection parameters required for important blocks.

[0115] The present invention discloses a water conservancy project monitoring method and system, which relate to the technical field of water conservancy project monitoring. The method comprises the following steps: analyzing water conservancy project design data to construct a three-dimensional model; performing stress finite element analysis on the three-dimensional model to obtain a finite element analysis model; constructing a water contact simulation surface for the water contact surface of the finite element analysis model, and performing water body characteristic mapping adjustment; inputting the adjusted water contact simulation surface into the finite element analysis model to determine stress parameters of different important blocks; collecting real-time water conservancy characteristic data, constructing a real-time water contact simulation surface, and performing comparative analysis to determine stress parameters of the water conservancy project within unit time, as well as parameters required for inspection of important blocks; and determining inspection strategies for different blocks of the water conservancy project based on the parameters required for inspection. The above technical scheme of the present invention realizes the optimization of the inspection strategy and avoids the aggravation of damage to the water conservancy project due to missed inspection.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present invention can be implemented by hardware, or by software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present invention.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A water conservancy project monitoring method, characterized in that: include: Analyze the design data of water conservancy projects, construct a 3D model of the water conservancy project, and calibrate important blocks of the 3D model of the water conservancy project based on the preset important structure catalog; Conduct stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project; A water contact simulation surface is constructed for the water contact surface of the finite element analysis model of the hydraulic engineering project, and water characteristic mapping is adjusted for the water contact simulation surface based on the analysis results of the hydraulic characteristic data; The adjusted water contact simulation surface is used as model input data and input into the finite element analysis model of the water conservancy project to determine the stress parameters of different important blocks of the three-dimensional model of the water conservancy project in unit time, and the correlation between the water contact simulation surface and the stress parameters is established to obtain the corresponding set of water simulation surface / stress parameters; Collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the corresponding set of water body simulation surface / stress parameter for comparison and analysis. Based on the level of the matching parameters, determine the stress parameters of the water conservancy project per unit time, and based on the cumulative sum of the stress parameters over time, determine the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project; Based on the inspection parameters of important blocks, determine the inspection strategy for different blocks of water conservancy projects; Among them, based on the analysis results of the hydraulic characteristic data, the method for adjusting the water body characteristic mapping of the hydraulic contact simulation surface includes: A number of water pressure monitoring devices are randomly set on the water contact surface of the water conservancy project, and water pressure monitoring points are set at positions corresponding to the water contact simulation surface based on the positions of the water pressure monitoring devices relative to the water contact surface; Using a water pressure monitoring device to monitor water pressure change data in real time, and constructing a comprehensive water pressure change curve based on the water pressure change data, and associating the comprehensive water pressure change data with corresponding water pressure monitoring points; Determine the curve components with amplitudes greater than or equal to the preset value in each comprehensive water pressure change curve to obtain several effective water pressure change curves, scan and analyze the effective water pressure change curves corresponding to all water pressure monitoring points, determine the effective change curve with the earliest starting fluctuation, determine the earliest starting time node corresponding to the effective change curve with the earliest starting fluctuation, and determine the starting time nodes of other effective change curves; The water pressure monitoring node corresponding to the effective change curve of the earliest starting fluctuation is determined and recorded as the central water pressure monitoring node. A water impact range circle is constructed with the central water pressure monitoring node as the center, and the water impact range circle is gradually expanded. Each time the water impact range circle is gradually expanded, the water pressure monitoring nodes within the preset range inside the edge of the water impact range circle are located, and the combination of the effective change water pressure change curves of the located water pressure monitoring nodes is recorded as the same circle layer effective water pressure change curve group; The effective water pressure change curves between each water pressure monitoring node in the same circle effective water pressure change curve group are screened for equality, and the effective water pressure change curves that do not meet the requirements are eliminated; The amplitude and frequency of the effective water pressure change curves in the effective water pressure change curve group of the same circle are analyzed to obtain the water shock parameter. If the water shock parameter is less than or equal to the preset value, the water shock range circle corresponding to the effective water pressure change curve group of the same circle is regarded as the reference water shock range circle; Based on the reference water impact range circle and the effective water pressure change curve corresponding to the central water pressure monitoring node, the water body characteristic mapping is adjusted for the water body contact simulation surface.

2. A water conservancy project monitoring method according to claim 1, characterized in that: The methods for stress finite element analysis of three-dimensional models of water conservancy projects include: The three-dimensional model of the water conservancy project is meshed to obtain a number of unit meshes, and the unit meshes are connected by nodes to form a number of discretized unit aggregates; Based on the design data of water conservancy projects, material parameters are configured for different unit assemblies, including elastic modulus, Poisson's ratio and material density; Boundary conditions are configured for the three-dimensional model of the water conservancy project, and water pressure loads are applied to the water contact surface on the three-dimensional model of the water conservancy project.

3. A water conservancy project monitoring method according to claim 1, characterized in that: The method for performing equivalence screening on the effective water pressure change curves between each water pressure monitoring point in the effective water pressure change curve group of the same circle layer includes: Randomly select a number of effective water pressure change curves from the effective water pressure change curve group of the same circle layer, and record the selected effective water pressure change curves as random effective water pressure change curves; Each random effective water pressure change curve selected is combined and compared with other different effective water pressure change curves. If the two are consistent, the random effective water pressure change curve is recorded as consistent once; The number of matching records of each random effective water pressure change curve is counted to obtain the total matching number, and the random effective water pressure change curve with the largest total matching number is selected as the marker water pressure change curve; The effective water pressure change curve is compared with the mark water pressure change curve respectively. If they match, the effective water pressure change curve is classified as equivalent.

4. A water conservancy project monitoring method according to claim 1, characterized in that: The method for adjusting the water body characteristic mapping of the water body contact simulation surface based on the reference water impact range circle and the effective water pressure change curve corresponding to the central water pressure monitoring node includes: An arc-shaped water pressure expression model is set for a block corresponding to a reference water impact range circle on a water contact simulation surface. The arc-shaped water pressure expression model is an arc-shaped surface. The center height is adjusted according to the fluctuation amplitude of the effective water pressure change curve, and the fluctuation period of the arc-shaped surface is adjusted according to the curve period of the effective water pressure change curve. The edges between different arc-shaped water pressure representation models on the water contact simulation surface are smoothly connected to obtain the water contact simulation surface after mapping adjustment.

5. A water conservancy project monitoring method according to claim 1, characterized in that: Methods for determining stress parameters of different important blocks of the three-dimensional model of a water conservancy project include: Several real-time hydraulic contact simulation surfaces are used as model input data and respectively input into the hydraulic engineering finite element analysis model for stress analysis to determine the stress dynamic performance of different important blocks; Several stress comparison intervals are set for different important blocks. Each stress comparison interval corresponds to a preset unit stress parameter. The dynamic performance of stress is analyzed to determine the mapping time length of the dynamic performance of stress in different stress comparison intervals. Combined with the unit stress parameter corresponding to the stress comparison interval, the stress parameters of the important blocks are calculated.

6. A water conservancy project monitoring method according to claim 1, characterized in that: The method of substituting the real-time water contact simulation surface into the corresponding set of water simulation surface / stress parameters for comparative analysis includes: Performing simulation surface feature analysis on the real-time water contact simulation surface, including determining the focus area where the central water pressure monitoring node exists, and the diameter of the water impact range circle corresponding to each central water pressure monitoring node; The determined focus block and the diameter of the water impact range circle are used as screening conditions to screen the corresponding set of water body simulation surface / stress parameter, and several corresponding groups of water body simulation surface / stress parameter are screened out. The real-time water body contact simulation surface and the water body simulation surface in each water body simulation surface / stress parameter corresponding group are compared for consistency, and based on the comparison results, the corresponding parameters are determined.

7. A water conservancy project monitoring method according to claim 6, characterized in that: Methods for calculating the matching parameters include: Compare the relative distances between the central water pressure monitoring nodes of the same concerned blocks, compare the diameter differences between the water impact range circles, and compare the fluctuation period differences between the water impact range circles; Based on the relative distance between nodes, diameter difference and fluctuation period difference, the matching parameters are determined; Among them, the expression for calculating the coincident parameter is: ； in, For the matching parameters, For the The difference in the fluctuation period between the water impact range circles, is the fluctuation period difference adjustment coefficient, Fluctuation cycle difference adjustment constant, is the preset maximum relative distance between nodes, is the relative distance between the central water pressure monitoring nodes, is the weight adjustment coefficient of the relative distance between nodes, is the preset maximum diameter difference, For the The diameter difference between the water impact range circles, is the diameter difference weight adjustment coefficient, It is the total number of central water pressure monitoring nodes or water impact range circles participating in the comparison within a water contact simulation surface.

8. A water conservancy project monitoring system, characterized in that: A water conservancy project monitoring method for implementing any one of claims 1 to 7, comprising: The first module is used to analyze the design data of the water conservancy project, build a three-dimensional model of the water conservancy project, and calibrate important blocks of the three-dimensional model of the water conservancy project based on the preset important structure catalog; The second module is used to perform stress finite element analysis on the three-dimensional model of the water conservancy project to obtain a finite element analysis model of the water conservancy project; The third module is used to construct a water contact simulation surface for the water contact surface of the finite element analysis model of the water conservancy project, analyze the water conservancy characteristic data, and adjust the water characteristic mapping of the water contact simulation surface based on the analysis results; The fourth module is used to input the adjusted water contact simulation surface as model input data into the finite element analysis model of the water conservancy project, determine the stress parameters of different important blocks of the three-dimensional model of the water conservancy project in unit time, and establish the correlation between the water contact simulation surface and the stress parameters to obtain the corresponding set of water simulation surface / stress parameters; The fifth module is used to collect real-time water conservancy characteristic data, and based on the real-time water conservancy characteristic data, construct a real-time water body contact simulation surface, and substitute the real-time water body contact simulation surface into the corresponding set of water body simulation surface / stress parameter for comparison and analysis, and determine the stress parameters of the water conservancy project per unit time based on the level of the matching parameters, and determine the parameters that need to be inspected in important blocks in the three-dimensional model of the water conservancy project based on the cumulative sum of the stress parameters over time; The sixth module is used to determine the inspection strategy for different blocks of the water conservancy project based on the inspection parameters required for important blocks.

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