Safety evaluation method and device of flood discharge gate, electronic equipment and storage medium

Abstract

The application relates to the technical field of water conservancy and hydropower measurement safety, in particular to a safety evaluation method and device for a flood discharge gate, an electronic device and a storage medium, wherein the method comprises the following steps: acquiring structure data, geometric feature stress data and hydraulic working condition data of a flood discharge gate to be evaluated; determining a water flow excitation frequency and a gate opening and closing excitation frequency of the flood discharge gate to be evaluated, and determining a cracking risk quantitative index of the flood discharge gate to be evaluated; acquiring a gate opening and closing speed safety threshold value of the flood discharge gate to be evaluated, so as to determine a safety grade of the flood discharge gate to be evaluated, and generating corresponding early warning instructions and / or visual display instructions according to the safety grade. Therefore, the problems in the prior art, such as the incapability of comprehensively reflecting the gate structure defect and the multi-frequency resonance coupling deterioration mechanism, the low cracking risk quantitative evaluation precision, the absence of the opening and closing parameter threshold value, the insufficient linkage between the early warning visualization and the automatic control, and the difficulty in guaranteeing the long-term safe and stable intelligent operation of the flood discharge gate, are solved.

Description

Technical Field

[0001] This application relates to the field of water conservancy and hydropower metering safety technology, and in particular to a safety assessment method, device, electronic equipment and storage medium for flood discharge gates. Background Technology

[0002] In related technologies, sensors can be used to collect parameters such as gate structure stress and corrosion thickness, and structural defects can be detected and classified separately, with simple risk warnings given based on the defect level. Alternatively, simulation or monitoring data can be used to analyze the gate vibration frequency, determine the resonance risk at a single frequency, and then set fixed operating limits based on experience.

[0003] In summary, the relevant technologies generally suffer from problems such as incomplete assessment systems, insufficient accuracy in risk quantification, lack of quantitative safety standards for opening and closing parameters, and poor linkage between early warning, visualization, and automatic control. These issues make it difficult to meet the engineering requirements of water conservancy projects for the long-term safe, stable, and intelligent operation of flood discharge gates, and improvements are urgently needed. Summary of the Invention

[0004] This application provides a safety assessment method, device, electronic equipment, and storage medium for flood discharge gates to solve the problems in related technologies, such as the inability to fully reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, the inability to achieve accurate quantitative assessment of cracking risk, the inability to form quantitative and controllable opening and closing parameter thresholds, and the difficulty in coordinating early warning information, visualization display, and automatic control, thus failing to ensure the long-term safe, stable, and intelligent operation of flood discharge gates in water conservancy projects.

[0005] This application provides a safety assessment method for a flood discharge gate, comprising the following steps: acquiring structural data, geometric feature stress data, and hydraulic condition data of the flood discharge gate to be assessed; determining the flow excitation frequency and gate opening and closing excitation frequency of the flood discharge gate to be assessed based on the structural data, the geometric feature stress data, and the hydraulic condition data, and determining the cracking risk quantification index of the flood discharge gate to be assessed based on the structural data, the geometric feature stress data, the hydraulic condition data, the flow excitation frequency, and the gate opening and closing excitation frequency; acquiring the gate opening and closing rate safety threshold of the flood discharge gate to be assessed, and determining the safety level of the flood discharge gate to be assessed based on the gate opening and closing rate safety threshold and the cracking risk quantification index, and generating corresponding early warning instructions and / or visualization display instructions according to the safety level.

[0006] The above technical solution allows for the determination of the corresponding flow excitation frequency and gate opening / closing excitation frequency based on the acquired structural, geometric stress, and hydraulic condition data of the floodgate to be evaluated. This leads to the determination of the cracking risk quantification index of the floodgate and, combined with the corresponding gate opening / closing rate safety threshold, the safety level is determined, thereby generating corresponding early warning instructions and / or visual display instructions. By collecting structural, geometric stress, and hydraulic condition data of the floodgate from multiple dimensions, the flow and opening / closing excitation frequencies can be accurately determined, resulting in an objective and reliable cracking risk quantification index. Combined with the rate safety threshold, graded safety judgment, early warning, and visual instruction output are achieved, thus realizing a comprehensive quantitative assessment of the gate's safety status, improving the accuracy of safety judgment and the timeliness of early warning, and providing a reliable basis for gate safety management.

[0007] Optionally, in this application, determining the flow excitation frequency and gate opening / closing excitation frequency of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, and the hydraulic condition data includes: determining the initial gate opening / closing rate of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, and the hydraulic condition data; calculating the initial flow excitation frequency and the initial gate opening / closing excitation frequency of the flood discharge gate to be evaluated based on the initial gate opening / closing rate; obtaining the natural vibration frequency of the flood discharge gate to be evaluated; and determining the flow excitation frequency and the gate opening / closing excitation frequency based on the natural vibration frequency, the initial flow excitation frequency, and the initial gate opening / closing excitation frequency.

[0008] The above technical solution allows for the determination of the initial gate opening and closing rate of the flood discharge gate to be evaluated based on structural data, geometric stress data, and hydraulic operating condition data. This enables the calculation of the corresponding initial water flow excitation frequency and initial gate opening and closing excitation frequency. Combined with the natural vibration frequency, the water flow excitation frequency and gate opening and closing excitation frequency are determined. By combining structural data, geometric stress data, and hydraulic operating condition data to determine the initial gate opening and closing rate, and calculating the initial excitation frequency accordingly, and then further combining the natural vibration frequency to determine the final excitation frequency, the process of determining the excitation frequency can fully align with the actual structural and operating characteristics of the gate. This effectively improves the accuracy and rationality of the excitation frequency calculation, providing a more reliable frequency data foundation for subsequent crack risk analysis.

[0009] Optionally, in this application, determining the water flow excitation frequency and the gate opening / closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening / closing excitation frequency includes: obtaining a comparison result between the initial water flow excitation frequency and the initial gate opening / closing excitation frequency, and determining the corresponding dominant excitation frequency based on the comparison result; calculating the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency; if the resonance deviation rate is less than a preset deviation threshold, iteratively updating the initial water flow excitation frequency and the initial gate opening / closing excitation frequency based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold, thereby determining the water flow excitation frequency and the gate opening / closing excitation frequency.

[0010] The above technical solution allows for the determination of the dominant excitation frequency based on the comparison between the initial water flow excitation frequency and the initial gate opening / closing excitation frequency. It then calculates the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency. If the resonance deviation rate is less than a preset deviation threshold, the initial water flow excitation frequency and the initial gate opening / closing excitation frequency are iteratively updated based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold. This process determines the corresponding water flow excitation frequency and gate opening / closing excitation frequency. By comparing and determining the dominant excitation frequency and calculating its resonance deviation rate with the natural vibration frequency, and then iteratively updating the excitation frequency based on the deviation threshold, resonance risks can be effectively avoided. This makes the determined water flow excitation frequency and gate opening / closing excitation frequency safer and more reliable, providing a precise and stable frequency basis for subsequent gate cracking risk assessment and safety control.

[0011] Optionally, in this application, determining the cracking risk quantification index of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, the hydraulic condition data, the water flow excitation frequency, and the gate opening and closing excitation frequency includes: calculating a multi-factor comprehensive index of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, the hydraulic condition data, the water flow excitation frequency, and the gate opening and closing excitation frequency; calculating the weld fatigue cracking risk index and the brittle cracking risk index of the flood discharge gate to be evaluated based on the multi-factor comprehensive index; and obtaining the cracking risk quantification index based on the multi-factor comprehensive index, the weld fatigue cracking risk index, and the brittle cracking risk index.

[0012] The above technical solution allows for the calculation of a multi-factor comprehensive index based on structural data, geometric stress data, hydraulic condition data, flow excitation frequency, and gate opening and closing excitation frequency. Based on this multi-factor comprehensive index, the weld fatigue cracking risk index and brittle cracking risk index are calculated, resulting in a cracking risk quantification index. By comprehensively calculating the multi-factor comprehensive index using structural data, geometric stress data, hydraulic condition data, and the two types of excitation frequencies, and further solving for the weld fatigue cracking risk index and brittle cracking risk index separately, the cracking risk quantification index is finally obtained. This enables comprehensive quantitative analysis of multi-dimensional and multi-type cracking risks, improving the comprehensiveness and accuracy of cracking risk assessment and providing an objective and reliable quantitative basis for gate safety evaluation.

[0013] Optionally, in this application, obtaining the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated includes: determining the defect level of the flood discharge gate to be evaluated based on the defect characteristics of the flood discharge gate to be evaluated; obtaining the service life and rated opening and closing rate of the flood discharge gate to be evaluated; and determining the corresponding gate opening and closing rate safety threshold based on the defect level, the service life, and the rated opening and closing rate.

[0014] The above technical solution allows for the determination of defect levels based on the defect characteristics of the flood discharge gate to be evaluated. Combined with the service life and rated opening / closing rate of the flood discharge gate, a corresponding gate opening / closing rate safety threshold can be determined. By comprehensively determining the gate opening / closing rate safety threshold by combining defect levels, service life, and rated opening / closing rate, the actual defect conditions and long-term service attenuation characteristics of the gate can be fully considered. This makes the rate threshold more closely reflect real operating conditions, improves the rationality and relevance of the safety threshold setting, and provides a reliable evaluation benchmark for subsequent safety level determination.

[0015] Optionally, in this application, determining the safety level of the flood discharge gate to be evaluated based on the gate opening and closing rate safety threshold and the cracking risk quantification index includes: comparing the gate opening and closing rate safety threshold with a first preset threshold to obtain a first comparison result; comparing the cracking risk quantification index with a second preset threshold to obtain a second comparison result; and determining the safety level based on the first comparison result and the second comparison result.

[0016] The above technical solution allows for the comparison of the gate opening / closing rate safety threshold with a first preset threshold, and the comparison of the cracking risk quantification index with a second preset threshold, thereby obtaining a first comparison result and a second comparison result. Based on the first comparison result and the second comparison result, the corresponding safety level is determined. By comparing the gate opening / closing rate safety threshold and the cracking risk quantification index with the corresponding preset thresholds, and combining the dual comparison results to comprehensively determine the safety level, the collaborative judgment of multi-dimensional key indicators can be achieved, improving the objectivity and accuracy of safety level classification and providing a reliable basis for subsequent early warning and control.

[0017] Optionally, this application further includes: executing the early warning command and / or the visualization command; determining the opening and closing rate scheduling command and the opening degree scheduling command of the flood discharge gate to be evaluated based on the safety level; and controlling the flood discharge gate to be evaluated to execute the opening and closing rate scheduling command and the opening degree scheduling command.

[0018] The above technical solution can execute early warning commands and / or the visualization display commands, and determine the corresponding opening and closing rate scheduling commands and opening degree scheduling commands according to the safety level. This allows the flood discharge gate under evaluation to execute the opening and closing rate scheduling commands and opening degree scheduling commands. By executing early warning and visualization display commands, and generating corresponding opening and closing rate and opening degree scheduling commands according to the safety level to control the gate operation, it is possible to achieve integrated risk early warning, visualization supervision and closed-loop control, ensuring that the gate operation is accurately matched with the safety level, and improving the intelligence level and operational safety of flood discharge gate management.

[0019] This application provides a safety assessment device for a flood discharge gate, comprising: an acquisition module for acquiring structural data, geometric feature stress data, and hydraulic condition data of the flood discharge gate to be assessed; a first determination module for determining the flow excitation frequency and gate opening and closing excitation frequency of the flood discharge gate to be assessed based on the structural data, the geometric feature stress data, and the hydraulic condition data, and determining a cracking risk quantification index of the flood discharge gate to be assessed based on the structural data, the geometric feature stress data, the hydraulic condition data, the flow excitation frequency, and the gate opening and closing excitation frequency; and a generation module for acquiring a gate opening and closing rate safety threshold of the flood discharge gate to be assessed, determining the safety level of the flood discharge gate to be assessed based on the gate opening and closing rate safety threshold and the cracking risk quantification index, and generating corresponding early warning instructions and / or visualization display instructions according to the safety level.

[0020] The above technical solution allows for the determination of the corresponding flow excitation frequency and gate opening / closing excitation frequency based on the acquired structural, geometric stress, and hydraulic condition data of the floodgate to be evaluated. This leads to the determination of the cracking risk quantification index of the floodgate and, combined with the corresponding gate opening / closing rate safety threshold, the safety level is determined, thereby generating corresponding early warning instructions and / or visual display instructions. By collecting structural, geometric stress, and hydraulic condition data of the floodgate from multiple dimensions, the flow and opening / closing excitation frequencies can be accurately determined, resulting in an objective and reliable cracking risk quantification index. Combined with the rate safety threshold, graded safety judgment, early warning, and visual instruction output are achieved, thus realizing a comprehensive quantitative assessment of the gate's safety status, improving the accuracy of safety judgment and the timeliness of early warning, and providing a reliable basis for gate safety management.

[0021] Optionally, in this application, the first determining module includes: a first determining unit, configured to determine the initial gate opening and closing rate of the flood discharge gate to be evaluated based on the structural data, the geometric feature force data, and the hydraulic condition data; a first calculating unit, configured to calculate the initial water flow excitation frequency and the initial gate opening and closing excitation frequency of the flood discharge gate to be evaluated based on the initial gate opening and closing rate; a first acquiring unit, configured to acquire the natural vibration frequency of the flood discharge gate to be evaluated; and a second determining unit, configured to determine the water flow excitation frequency and the gate opening and closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency.

[0022] The above technical solution allows for the determination of the initial gate opening and closing rate of the flood discharge gate to be evaluated based on structural data, geometric stress data, and hydraulic operating condition data. This enables the calculation of the corresponding initial water flow excitation frequency and initial gate opening and closing excitation frequency. Combined with the natural vibration frequency, the water flow excitation frequency and gate opening and closing excitation frequency are determined. By combining structural data, geometric stress data, and hydraulic operating condition data to determine the initial gate opening and closing rate, and calculating the initial excitation frequency accordingly, and then further combining the natural vibration frequency to determine the final excitation frequency, the process of determining the excitation frequency can fully align with the actual structural and operating characteristics of the gate. This effectively improves the accuracy and rationality of the excitation frequency calculation, providing a more reliable frequency data foundation for subsequent crack risk analysis.

[0023] Optionally, in this application, the second determining unit includes: an acquisition subunit, configured to acquire a comparison result between the initial water flow excitation frequency and the initial gate opening / closing excitation frequency, and determine the corresponding dominant excitation frequency based on the comparison result; a calculation subunit, configured to calculate the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency; and an update subunit, configured to iteratively update the initial water flow excitation frequency and the initial gate opening / closing excitation frequency based on the resonance deviation rate when the resonance deviation rate is less than a preset deviation threshold, until the resonance deviation rate is greater than or equal to the preset deviation threshold, so as to determine the water flow excitation frequency and the gate opening / closing excitation frequency.

[0024] The above technical solution allows for the determination of the dominant excitation frequency based on the comparison between the initial water flow excitation frequency and the initial gate opening / closing excitation frequency. It then calculates the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency. If the resonance deviation rate is less than a preset deviation threshold, the initial water flow excitation frequency and the initial gate opening / closing excitation frequency are iteratively updated based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold. This process determines the corresponding water flow excitation frequency and gate opening / closing excitation frequency. By comparing and determining the dominant excitation frequency and calculating its resonance deviation rate with the natural vibration frequency, and then iteratively updating the excitation frequency based on the deviation threshold, resonance risks can be effectively avoided. This makes the determined water flow excitation frequency and gate opening / closing excitation frequency safer and more reliable, providing a precise and stable frequency basis for subsequent gate cracking risk assessment and safety control.

[0025] Optionally, in this application, the first determining module includes: a second calculation unit, used to calculate a multi-factor comprehensive index of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, the hydraulic condition data, the water flow excitation frequency, and the gate opening and closing excitation frequency; a third calculation unit, used to calculate the weld fatigue cracking risk index and the brittle cracking risk index of the flood discharge gate to be evaluated based on the multi-factor comprehensive index; and a first generating unit, used to obtain the cracking risk quantification index based on the multi-factor comprehensive index, the weld fatigue cracking risk index, and the brittle cracking risk index.

[0026] The above technical solution allows for the calculation of a multi-factor comprehensive index based on structural data, geometric stress data, hydraulic condition data, flow excitation frequency, and gate opening and closing excitation frequency. Based on this multi-factor comprehensive index, the weld fatigue cracking risk index and brittle cracking risk index are calculated, resulting in a cracking risk quantification index. By comprehensively calculating the multi-factor comprehensive index using structural data, geometric stress data, hydraulic condition data, and the two types of excitation frequencies, and further solving for the weld fatigue cracking risk index and brittle cracking risk index separately, the cracking risk quantification index is finally obtained. This enables comprehensive quantitative analysis of multi-dimensional and multi-type cracking risks, improving the comprehensiveness and accuracy of cracking risk assessment and providing an objective and reliable quantitative basis for gate safety evaluation.

[0027] Optionally, in this application, the generation module includes: a third determining unit, configured to determine the defect level of the flood discharge gate to be evaluated based on the defect characteristics of the flood discharge gate to be evaluated; a second obtaining unit, configured to obtain the service life and rated opening and closing rate of the flood discharge gate to be evaluated; and a fourth determining unit, configured to determine the corresponding gate opening and closing rate safety threshold based on the defect level, the service life, and the rated opening and closing rate.

[0028] The above technical solution allows for the determination of defect levels based on the defect characteristics of the flood discharge gate to be evaluated. Combined with the service life and rated opening / closing rate of the flood discharge gate, a corresponding gate opening / closing rate safety threshold can be determined. By comprehensively determining the gate opening / closing rate safety threshold by combining defect levels, service life, and rated opening / closing rate, the actual defect conditions and long-term service attenuation characteristics of the gate can be fully considered. This makes the rate threshold more closely reflect real operating conditions, improves the rationality and relevance of the safety threshold setting, and provides a reliable evaluation benchmark for subsequent safety level determination.

[0029] Optionally, in this application, the generation module includes: a second generation unit, used to compare the gate opening and closing rate safety threshold with a first preset threshold to obtain a first comparison result; a third generation unit, used to compare the cracking risk quantification index with the second preset threshold to obtain a second comparison result; and a fifth determination unit, used to determine the safety level based on the first comparison result and the second comparison result.

[0030] The above technical solution allows for the comparison of the gate opening / closing rate safety threshold with a first preset threshold, and the comparison of the cracking risk quantification index with a second preset threshold, thereby obtaining a first comparison result and a second comparison result. Based on the first comparison result and the second comparison result, the corresponding safety level is determined. By comparing the gate opening / closing rate safety threshold and the cracking risk quantification index with the corresponding preset thresholds, and combining the dual comparison results to comprehensively determine the safety level, the collaborative judgment of multi-dimensional key indicators can be achieved, improving the objectivity and accuracy of safety level classification and providing a reliable basis for subsequent early warning and control.

[0031] Optionally, this application further includes: a second determining module, configured to execute the early warning instruction and / or the visualization display instruction, and determine the opening and closing rate scheduling instruction and the opening degree scheduling instruction of the flood discharge gate to be evaluated based on the safety level; and an execution module, configured to control the flood discharge gate to be evaluated to execute the opening and closing rate scheduling instruction and the opening degree scheduling instruction.

[0032] The above technical solution can execute early warning commands and / or the visualization display commands, and determine the corresponding opening and closing rate scheduling commands and opening degree scheduling commands according to the safety level. This allows the flood discharge gate under evaluation to execute the opening and closing rate scheduling commands and opening degree scheduling commands. By executing early warning and visualization display commands, and generating corresponding opening and closing rate and opening degree scheduling commands according to the safety level to control the gate operation, it is possible to achieve integrated risk early warning, visualization supervision and closed-loop control, ensuring that the gate operation is accurately matched with the safety level, and improving the intelligence level and operational safety of flood discharge gate management.

[0033] This application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described safety assessment method for floodgates.

[0034] This application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described safety assessment method for floodgates.

[0035] This application provides a computer program product, including a computer program that, when executed, implements the above-described safety assessment method for floodgates.

[0036] This application can determine the corresponding flow excitation frequency and gate opening and closing excitation frequency based on the obtained structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated. This allows for the determination of the cracking risk quantification index of the flood discharge gate, and by combining this with the corresponding gate opening and closing rate safety threshold, the safety level can be determined. This generates corresponding early warning instructions and / or visual display instructions. By collecting structural, geometric stress, and hydraulic condition data of the flood discharge gate from multiple dimensions, the flow and opening / closing excitation frequencies can be accurately determined, resulting in an objective and reliable cracking risk quantification index. Combined with the rate safety threshold, graded safety judgment, early warning, and visual instruction output are achieved. This enables a comprehensive quantitative assessment of the gate's safety status, improves the accuracy of safety judgment and the timeliness of early warning, and provides a reliable basis for gate safety management. Consequently, the relevant technologies cannot fully reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, cannot achieve accurate quantitative assessment of cracking risk, cannot form quantitative and controllable opening and closing parameter thresholds, and the early warning information, visualization display and automatic control are difficult to coordinate and link, thus failing to ensure the long-term safe, stable and intelligent operation of flood discharge gates in water conservancy projects.

[0037] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0038] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of a safety assessment method for a floodgate according to an embodiment of this application; Figure 2 This is a block diagram of a safety assessment device for a floodgate according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0040] The following description, with reference to the accompanying drawings, outlines a method, apparatus, electronic device, and storage medium for assessing the safety of a flood discharge gate according to embodiments of this application. Addressing the issues mentioned in the background art, such as the inability to comprehensively reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, the inability to achieve accurate quantitative assessment of cracking risk, the inability to establish quantifiable and controllable opening and closing parameter thresholds, and the difficulty in coordinating early warning information, visualization, and automatic control, thus failing to guarantee the long-term safe, stable, and intelligent operation of flood discharge gates in water conservancy projects, this application provides a method for assessing the safety of a flood discharge gate. In this method, based on the acquired structural data, geometric characteristic stress data, and hydraulic condition data of the flood discharge gate to be assessed, the corresponding water flow excitation frequency and gate opening and closing excitation frequency can be determined. The method involves collecting structural, geometric, and hydraulic data of the floodgate from multiple dimensions to accurately determine the flow and opening / closing excitation frequencies, thus obtaining an objective and reliable crack risk quantification index. This index, combined with the rate safety threshold, enables graded safety judgment, early warning, and visual command output. This allows for a comprehensive quantitative assessment of the gate's safety status, improving the accuracy of safety judgments and the timeliness of early warnings, and providing a reliable basis for gate safety management. However, current technologies struggle to fully reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, making it impossible to achieve accurate quantitative assessment of crack risk, form quantifiable and controllable opening / closing parameter thresholds, and coordinate early warning information, visual displays, and automatic control. Consequently, these technologies cannot guarantee the long-term safe, stable, and intelligent operation of floodgates in water conservancy projects.

[0041] Specifically, Figure 1 This is a flowchart of a safety assessment method for a floodgate according to an embodiment of this application.

[0042] like Figure 1 As shown, the safety assessment method for this floodgate includes the following steps: In step S101, the structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated are obtained.

[0043] It is understood that, in the embodiments of this application, structural data may include, but is not limited to, the size, shape, weld distribution parameters, etc. of the flood discharge gate to be evaluated, and this application does not impose specific limitations; geometric characteristic stress data can be understood as the geometric parameters of the main stress-bearing parts of the flood discharge gate to be evaluated, such as the geometric parameters of the support arm, main beam, secondary beam, panel, support structure, etc., and this application does not impose specific limitations; hydraulic condition data may include, but is not limited to, the flow rate of the gate channel, the flow velocity of the water passing through the gate, the water level height of the upstream and downstream, the upstream inflow, the real-time reservoir capacity, etc., and this application does not impose specific limitations.

[0044] The real-time reservoir capacity reflects the reservoir's water storage capacity and flood discharge pressure. A larger real-time reservoir capacity results in a higher water storage pressure rate, stronger potential flow velocity and impact force of the water flowing through the sluice gates, necessitating a reduction in the opening and closing rate to prevent a sharp increase in the water flow excitation frequency. Simultaneously, it must match the flood discharge demand. When the real-time reservoir capacity exceeds the warning value, rapid flood discharge is required, but the risk of resonance must be balanced. The warning value can be set by those skilled in the art based on actual conditions; this application does not impose specific limitations.

[0045] Furthermore, the structural data in this application embodiment can be acquired using a 3D laser scanner, and the geometric feature stress data can be obtained using stress sensors, strain sensors, vibration sensors, and structural strength testers deployed in the main stress-bearing parts and key areas of welds, such as the main beam, secondary beam, panel, and supporting structure of the gate. Hydraulic condition data can be acquired using flow sensors, velocity sensors, water level sensors, and radar flow meters; this application does not impose specific limitations. Flow sensors and water level sensors are deployed on the upstream and downstream sides of the gate, velocity sensors are evenly deployed along the gate's flow channel cross-section, and radar flow meters are used to collect upstream water flow. Two to three detection devices can be deployed at each key location to ensure the comprehensiveness of the detection data. In addition, the preset sampling frequency of all sensors is not less than 10Hz, and the data transmission delay is ≤500ms, meeting the industrial-grade protection requirements for water conservancy and hydropower projects. Specific settings can be made by those skilled in the art according to actual conditions; this application does not impose specific limitations. The preset sampling frequency can be set by those skilled in the art according to actual conditions; this application does not impose specific limitations.

[0046] In some embodiments, the present application can acquire structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated.

[0047] For example, in this application embodiment, a three-dimensional laser scanner can be used to perform a full-size scan of the floodgate to collect structural data and geometric stress data; a water level sensor and a radar flow meter are deployed 5-10m upstream of the gate, and a water level sensor is deployed downstream; 6-8 velocity sensors and 2 flow sensors are evenly deployed along the cross-section of the gate channel to collect hydraulic condition data such as the water flow rate in the gate channel, the flow velocity of the water passing through the gate, the water level height upstream and downstream, and the water volume coming from upstream in real time.

[0048] It should be noted that the embodiments of this application can achieve time synchronization and format unification after noise reduction and calibration of the structural data, geometric feature force data, and hydraulic condition data collected by various detection and acquisition devices. Specifically, the embodiments of this application can perform zero-point calibration, accuracy calibration, and environmental interference elimination on all detection and acquisition devices to ensure the accuracy of data acquisition; set the preset sampling frequency of the hydraulic condition data acquisition device to 10Hz to achieve noise reduction, filtering, and format unification of all acquired data, with a time synchronization error ≤100ms; debug communication to ensure the real-time performance and stability of command issuance and data upload; and conduct control debugging of the linkage gate actuator to verify the automatic control effect of opening and closing rate and opening degree adjustment, ensuring that all detection and acquisition devices and control logic can be used normally before formal application, avoiding risks caused by control failure during actual operation, and ensuring that when resonance / cracking risks occur later, the opening and closing rate and operating opening degree can be automatically adjusted according to the preset logic. The preset logic can be set by those skilled in the art according to the actual situation, and this application does not impose specific limitations.

[0049] It can be understood that the embodiments of this application can collect hydraulic condition data such as gate flow rate, flow velocity, upstream and downstream water level height, and upstream inflow at 10Hz in real time. The specific process is as follows: (1) The original signals collected by various hydrological sensors, such as flow sensors, velocity sensors, and water level sensors, are transmitted to the data acquisition terminal. (2) The data acquisition terminal performs noise reduction, filtering, amplification and other preprocessing on the original signals to eliminate environmental interference, sensor drift and other errors, and obtains the preprocessed signals. (3) The preprocessed signals are quantized and converted to obtain standardized hydraulic condition data, and the timestamp synchronization and format unification of all parameters are completed. (4) The standardized hydraulic condition data is uploaded to the main control in real time, and distributed by the main control to the frequency analysis and control for subsequent processing, and stored in the database at the same time. It should be noted that in the hydraulic condition data acquisition process of this application embodiment, if the sensor data is abnormal or the transmission is interrupted, the data acquisition terminal can automatically start backup sensor data to replace it and perform local data caching. After the transmission is restored, it will be automatically retransmitted to ensure the integrity and continuity of the data.

[0050] In step S102, based on structural data, geometric feature stress data, and hydraulic condition data, the flow excitation frequency and gate opening and closing excitation frequency of the flood discharge gate to be evaluated are determined, and based on structural data, geometric feature stress data, hydraulic condition data, flow excitation frequency, and gate opening and closing excitation frequency, the cracking risk quantification index of the flood discharge gate to be evaluated is determined.

[0051] In some embodiments, the present application can construct a three-dimensional image data model of the gate based on structural data, geometric feature stress data and hydraulic condition data, and use the three-dimensional image data model of the gate to obtain the corresponding metal structure strength coefficient, stress concentration coefficient and natural vibration frequency of the gate.

[0052] It should be noted that, in this embodiment of the application, the three-dimensional image data model of the gate is a 1:1 visualization model that restores the structural features of the flood discharge gate to be evaluated. It is used to obtain the corresponding metal structure strength coefficient, stress concentration coefficient and gate natural vibration frequency, and supports data association, risk location marking and visualization display functions to ensure that the detection data and early warning information can be accurately mapped to the corresponding location of the model.

[0053] For example, in this embodiment of the application, the structural data and geometric stress data of the flood discharge gate to be evaluated are obtained, and a 1:1 high-precision 3D image data model of the gate is constructed using 3D modeling software. The model accurately restores the overall structure, distribution of main stress parts, weld direction and geometric features of the flood discharge gate to be evaluated. The model supports functions such as data association, highlighting and annotation, and visualization.

[0054] Furthermore, in the embodiments of this application, the strength coefficient of the metal structure is determined by the ratio of the measured value to the design value, which can be the ratio of the yield strength, and its calculation formula can be, but is not limited to, the following: , in, To measure the yield strength, To design yield strength, This is the strength coefficient.

[0055] Furthermore, in the embodiments of this application, the formula for calculating the yield strength may be, but is not limited to, the following: , in, Yield load, unit: It can be measured using a stress-strain sensor; Yield strength, unit: ; Original cross-sectional area, unit: .

[0056] In addition, in some embodiments, the metal structure strength coefficient in this application can be a tensile strength ratio, which can be specifically set by those skilled in the art according to the actual situation, and this application does not impose specific limitations. The formula for calculating tensile strength can be, but is not limited to, the following: , in, Maximum load before fracture, unit: N; Tensile strength, unit: ; Original cross-sectional area, unit: .

[0057] The stress concentration factor can be obtained by collecting stress data using stress sensors and strain sensors, combined with finite element simulation analysis, to locate stress concentration points. The formula for calculating the stress concentration factor can be, but is not limited to, the following: , in, This represents the maximum measured stress value at the stress concentration point. The average stress value in the same stress-bearing area. is the stress concentration factor.

[0058] The natural vibration frequency of the gate is obtained by collecting vibration signals from a vibration sensor and extracting them through Fourier transform.

[0059] Furthermore, in this embodiment, the obtained metal structure strength coefficient, stress concentration coefficient, and gate natural vibration frequency can be precisely associated and bound to the corresponding area of ​​the gate three-dimensional image data model according to the detection location, thereby realizing the integration of structural feature data and model.

[0060] Furthermore, in this embodiment of the application, the flow excitation frequency and gate opening and closing excitation frequency corresponding to the flood discharge gate to be evaluated can be determined by using a three-dimensional image data model of the gate.

[0061] The water flow excitation frequency can be understood as the periodic excitation frequency generated by the water flow impacting the gate. It can be quantified using hydrodynamic formulas, which can be, but are not limited to, expressed as: , in, The water flow excitation frequency is expressed in Hz. The water flow pulsation correction factor can be set empirically to 0.8-1.2. Specifically, the water flow pulsation correction factor can be dynamically adjusted according to the intensity of the water flow pulsation. For example, 1.0 can be used for steady water flow and 1.2 for turbulent water flow. The specific setting can be made by those skilled in the art according to the actual situation. This application does not impose any specific limitations. The average water flow velocity through the gate is expressed in m / s and can be collected by a flow velocity sensor. This application does not impose specific limitations on this. The characteristic dimensions of the gate flow channel are in meters (m). For example, the width is taken for a rectangular flow channel, and the diameter is taken for a circular flow channel. These are fixed quantitative parameters for the gate structure and can be set by those skilled in the art according to the actual situation. This application does not impose any specific limitations.

[0062] The gate opening and closing excitation frequency is the periodic excitation frequency generated by the mechanical motion during the gate opening and closing process. It can be quantified by the dynamic characteristics of the opening and closing mechanism, and its quantification formula can be, but is not limited to, expressed as: , in, The gate opening and closing excitation frequency, in Hz; is the transmission ratio of the opening and closing mechanism, and is a fixed quantitative parameter; The gate opening and closing rate is expressed in m / min and can be collected in real time by a displacement sensor. The specific settings can be configured by those skilled in the art according to the actual situation. This application does not impose any specific limitations. The maximum opening and closing stroke of the gate is expressed in meters (m), and it represents a fixed quantitative parameter of the gate structure.

[0063] It can be understood that, in the embodiments of this application, the flow excitation frequency can be quantitatively calculated using hydrodynamic formulas based on the flow velocity of the water passing through the gate and the cross-sectional dimensions of the flow channel; and the gate opening and closing excitation frequency can be quantitatively calculated based on the current opening and closing rate of the gate and the transmission characteristics of the opening and closing mechanism.

[0064] Furthermore, embodiments of this application can determine the cracking risk quantification index of the flood discharge gate to be evaluated based on structural data, geometric feature stress data, hydraulic condition data, water flow excitation frequency, and gate opening and closing excitation frequency.

[0065] Optionally, in one embodiment of this application, determining the flow excitation frequency and gate opening / closing excitation frequency of the flood discharge gate to be evaluated based on structural data, geometric feature stress data, and hydraulic condition data includes: determining the initial gate opening / closing rate of the flood discharge gate to be evaluated based on structural data, geometric feature stress data, and hydraulic condition data; calculating the initial flow excitation frequency and initial gate opening / closing excitation frequency of the flood discharge gate to be evaluated based on the initial gate opening / closing rate; obtaining the natural vibration frequency of the flood discharge gate to be evaluated; and determining the flow excitation frequency and gate opening / closing excitation frequency based on the natural vibration frequency, the initial flow excitation frequency, and the initial gate opening / closing excitation frequency.

[0066] It is understood that the opening and closing rate of the floodgate to be evaluated can be adjusted by controlling the lifting speed of the hoist (such as the lifting speed of the wire rope of the winch, the lifting speed of the hydraulic rod, etc., which are not specifically limited in this application). The faster the opening and closing rate, the higher the mechanical movement frequency of the gate opening and closing mechanism, and the corresponding gate opening and closing excitation frequency. Conversely, reducing the opening and closing rate can directly reduce the gate opening and closing excitation frequency, which is the main means of controlling the gate opening and closing excitation frequency.

[0067] In addition, in the embodiments of this application, the faster the opening and closing rate, the greater the rate of change of the opening of the flood discharge gate to be evaluated, and the more violent the fluctuation of the flow velocity and flow state of the water flowing through the gate, thereby increasing the water flow excitation frequency; the slower the opening and closing rate, the slower the change of the opening of the flood discharge gate, the more stable the state of the water flowing through the gate, and the more indirectly the lower the water flow excitation frequency.

[0068] In some embodiments, the present application can determine the initial gate opening and closing rate of the flood discharge gate to be evaluated based on structural data, geometric feature force data, and hydraulic condition data. Based on the initial gate opening and closing rate, the initial water flow excitation frequency and the initial gate opening and closing excitation frequency corresponding to the flood discharge gate to be evaluated are calculated respectively. At the same time, the natural vibration frequency of the flood discharge gate to be evaluated is obtained. By combining the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency, the water flow excitation frequency and the gate opening and closing excitation frequency are finally determined.

[0069] Specifically, the initial gate opening and closing rate in this application embodiment can be dynamically adjusted based on the real-time reservoir capacity and upstream water inflow.

[0070] Optionally, in one embodiment of this application, determining the water flow excitation frequency and the gate opening and closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency includes: obtaining a comparison result of the initial water flow excitation frequency and the initial gate opening and closing excitation frequency, and determining the corresponding dominant excitation frequency based on the comparison result; calculating the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency; if the resonance deviation rate is less than a preset deviation threshold, iteratively updating the initial water flow excitation frequency and the initial gate opening and closing excitation frequency based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold, so as to determine the water flow excitation frequency and the gate opening and closing excitation frequency.

[0071] In some embodiments, the present application may first obtain a comparison result between the initial water flow excitation frequency and the initial gate opening and closing excitation frequency, and determine the corresponding dominant excitation frequency based on the comparison result. Its expression may, but is not limited to, be: ,in, This represents the maximum value of the initial water flow excitation frequency and the initial gate opening / closing excitation frequency, in Hz.

[0072] Furthermore, embodiments of this application can calculate the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency, and detect whether the resonance deviation rate is less than a preset deviation threshold. If it is less, the initial water flow excitation frequency and the initial gate opening and closing excitation frequency are iteratively updated based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold, thereby determining the final water flow excitation frequency and the gate opening and closing excitation frequency. The preset deviation threshold can be set by those skilled in the art according to actual conditions, and this application does not impose specific limitations.

[0073] This can be understood as follows: the embodiments of this application can adjust the initial gate opening and closing rate to ensure that the resonance deviation rate between the natural vibration frequency and the water flow excitation frequency, as well as the gate opening and closing excitation frequency, is greater than or equal to a preset deviation threshold, thereby avoiding resonance caused by frequency superposition. The formula for calculating the resonance deviation rate can be, but is not limited to, expressed as: , in, Resonance deviation rate, As the dominant excitation frequency, It is the natural vibration frequency.

[0074] For example, embodiments of this application can perform dual-excitation frequency analysis and resonance avoidance control. The criteria for determining resonance avoidance control are: the resonance deviation rate between the initial water flow excitation frequency, the initial gate opening and closing excitation frequency, and the natural vibration frequency is ≥20%. If the resonance deviation rate is <20%, then a resonance risk is determined to exist. Specifically, embodiments of this application can first select the maximum value of the initial water flow excitation frequency and the initial gate opening and closing excitation frequency as the dominant excitation frequency, and compare the dominant excitation frequency with the natural vibration frequency. If the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency is ≥20%, then no resonance risk is determined; if the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency is <20%, then a resonance risk is determined to exist, and a resonance warning is immediately sent to the main controller. Then, based on the real-time reservoir capacity and upstream inflow, the initial gate opening and closing rate is dynamically adjusted, thereby updating the corresponding initial water flow excitation frequency and the initial gate opening and closing excitation frequency. Specifically, the embodiments of this application can adjust the initial gate opening and closing excitation frequency by reducing the opening and closing rate, and at the same time stabilize the flow velocity of the water passing through the gate by fine-tuning the gate opening, thereby adjusting the initial water flow excitation frequency, so that the resonance deviation rate between the water flow excitation frequency and the gate opening and closing excitation frequency and the natural vibration frequency is ≥20%, thus effectively avoiding the resonance risk.

[0075] For example, in this embodiment, the natural vibration frequency of the floodgate A to be evaluated is 6Hz, the initial gate opening and closing rate is 0.6m / min, the monitored initial water flow excitation frequency is 5.5Hz, and the initial gate opening and closing excitation frequency is 5.8Hz. The calculated resonance deviation rate is 3.3% < 20%, indicating a serious resonance risk. Furthermore, in this embodiment, based on the reservoir capacity and upstream inflow, the initial gate opening and closing rate can be reduced to 0.3m / min. At this time, the initial gate opening and closing excitation frequency is adjusted to 3.2Hz, corresponding to a resonance deviation rate of 46.7% ≥ 20%. Simultaneously, the gate opening is finely adjusted to reduce the flow velocity of the water passing through the gate, thereby adjusting the initial water flow excitation frequency to 4.0Hz, corresponding to a resonance deviation rate of 33.3% ≥ 20%, thus successfully avoiding the resonance risk.

[0076] Optionally, in one embodiment of this application, the cracking risk quantification index of the flood discharge gate to be evaluated is determined based on structural data, geometric feature stress data, hydraulic condition data, water flow excitation frequency, and gate opening and closing excitation frequency. This includes: calculating a multi-factor comprehensive index of the flood discharge gate to be evaluated based on structural data, geometric feature stress data, hydraulic condition data, water flow excitation frequency, and gate opening and closing excitation frequency; calculating the weld fatigue cracking risk index and brittle cracking risk index of the flood discharge gate to be evaluated based on the multi-factor comprehensive index; and obtaining the cracking risk quantification index based on the multi-factor comprehensive index, weld fatigue cracking risk index, and brittle cracking risk index.

[0077] It is understood that, in the embodiments of this application, the cracking risk quantification index may include, but is not limited to, a multi-factor comprehensive index, a weld fatigue cracking risk index, and a brittle cracking risk index, etc., and this application does not impose specific limitations.

[0078] The formula for calculating the multi-factor composite index can be, but is not limited to, expressed as: , in, It is a multi-factor composite index. The weighting coefficients for each indicator satisfy... , This is the strength coefficient of the metal structure. This is the weld condition deterioration coefficient. The rate of corrosion and wear exceeding the standard. The stress concentration factor is... The gate opening / closing rate deviation rate. The resonant coupling coefficient is the frequency excitation coefficient of the water flow.

[0079] It should be noted that, in calculating the multi-factor composite index in this embodiment of the application, the indicators can be first... Normalization to A higher value indicates a higher risk. The normalization expression can be, but is not limited to, as follows: , in, For the first The normalized results of the evaluation indicators have a range of values. The higher the value, the higher the risk level corresponding to the indicator; For the first The original measured values ​​of the evaluation indicators, such as the strength coefficient of the metal structure and the deterioration coefficient of the weld condition, are not specifically limited in this application. For the first The minimum value of each evaluation indicator; For the first The maximum value of each evaluation indicator.

[0080] Among them, regarding the strength coefficient of metal structures, The yield strength of the material in the design document. According to the "Design Code for Steel Gates of Water Conservancy and Hydropower Projects" SL 74-2019, 60% of the design strength is taken; regarding the weld condition deterioration coefficient, For a weld to be in an ideal state with no defects, This application does not impose specific restrictions on the presence of defects exceeding the standard in welds (such as cracks); regarding the excessive rate of corrosion and wear, The original thickness of the gate when it was first put into operation (without corrosion or wear). The gate is classified as Class D (severe corrosion), with the remaining corrosion thickness less than the minimum theoretical calculated thickness, and the strength is below design requirements; regarding the stress concentration factor, This represents the ideal state without stress concentration in structural mechanics. The standard GB / T3075-2008, "Test Methods for Stress Concentration in Metals," states that "failure laws of materials under alternating loads are characterized by stress concentration, which is a key factor leading to fatigue crack initiation (the larger the stress concentration factor, the shorter the crack initiation period)." This information is also found in publications such as the "Handbook for Metal Structure Design in Hydraulic and Hydropower Engineering" and the "Guideline for Fatigue Design of Steel Structures." Listed as a high-risk critical value for stress concentration; regarding the gate opening and closing rate deviation rate, The ideal state is when the rate meets the safety threshold. Based on operational experience, the risk increases sharply when the threshold is exceeded by 50%, and this is defined as a critical value; regarding the resonant coupling coefficient of the water flow excitation frequency... The target state for resonance avoidance (deviation ≥20%, no resonance risk). This is an example of a state of resonance (deviation <20%, highest risk). The specific settings can be determined by those skilled in the art based on actual circumstances. This application does not impose any specific restrictions.

[0081] For example, if the embodiments of this application use the analytic hierarchy process combined with water conservancy and hydropower engineering specifications and engineering operation and maintenance experience to determine the flood discharge gate A to be evaluated... , , , , , And the indicator weight coefficient is , , , , , If the weighted sum is 1, then the multi-factor composite index is: .

[0082] It can be understood that the embodiments of this application can calculate the multi-factor comprehensive index of the flood discharge gate to be evaluated based on structural data, geometric feature force data, hydraulic condition data, water flow excitation frequency and gate opening and closing excitation frequency.

[0083] In some embodiments, the present application can calculate the weld fatigue cracking risk index and brittle cracking risk index of the flood discharge gate to be evaluated based on a multi-factor comprehensive index.

[0084] The formula for calculating the weld fatigue cracking risk index can be, but is not limited to, expressed as: , in, This represents the fatigue cracking risk index for welds. The range of values ​​is A higher value indicates a higher risk of cracking. This is the fatigue cracking correction factor. The actual vibration frequency, This is the natural vibration frequency of the gate.

[0085] The formula for calculating the brittle fracture risk index can be, but is not limited to, expressed as: , in, It is a brittle cracking risk index. The range of values ​​is A higher value indicates a higher risk of cracking. This is the correction factor for brittle cracking. This represents the actual vibration amplitude. This is the vibration amplitude threshold.

[0086] It should be noted that, in calculating the weld fatigue cracking risk index and brittle fracture cracking risk index of the flood discharge gate to be evaluated, the vibration type of the flood discharge gate to be evaluated can be determined first: if the vibration type is high-frequency small-amplitude vibration (e.g., vibration frequency ≥ 5Hz, vibration amplitude ≤ 5mm, this application does not impose specific limitations), then the weld fatigue cracking risk index is calculated; if the vibration type is low-frequency large-amplitude vibration (e.g., vibration frequency < 5Hz, vibration amplitude > 5mm, this application does not impose specific limitations), then the brittle fracture cracking risk index is calculated; if the vibration type is mixed vibration, then both the weld fatigue cracking risk index and the brittle fracture cracking risk index are calculated simultaneously. For example, if the real-time vibration frequency of the flood discharge gate to be evaluated is 7Hz (vibration frequency ≥ 5Hz), the amplitude is 0.3mm (vibration amplitude ≤ 5mm), and the natural vibration frequency is 6Hz, then the vibration type is determined to be high-frequency small-amplitude vibration, and the value is taken as... Calculated It was determined that there was a slight risk of fatigue cracking.

[0087] Furthermore, in this embodiment, a cracking risk quantification index can be obtained based on a multi-factor comprehensive index, a weld fatigue cracking risk index, and a brittle cracking risk index, and then the safety level of the flood discharge gate to be evaluated can be determined based on the cracking risk quantification index.

[0088] In step S103, the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated is obtained, and the safety level of the flood discharge gate to be evaluated is determined based on the gate opening and closing rate safety threshold and the cracking risk quantification index. The corresponding early warning instruction and / or visualization display instruction are generated according to the safety level.

[0089] In some embodiments, the present application can first obtain the gate opening and closing rate safety threshold corresponding to the flood discharge gate to be evaluated, and then determine the safety level of the flood discharge gate to be evaluated based on the gate opening and closing rate safety threshold and the cracking risk quantification index, thereby generating early warning instructions and / or visualization display instructions corresponding to the determined safety level.

[0090] The visualization display instructions can be mapped according to the security level: Level 1 security (blue) displays only the operating parameters locally; Level 2 security (yellow) displays local pop-ups and mobile push notifications, prompting attention to minor over-limit indicators; Level 3 security (orange) displays local audible and visual alarms, mobile push notifications, and management reminders, clearly indicating the risk location and cracking risk index; Level 4 security (red) displays continuous local audible and visual alarms, emergency mobile push notifications, and management emails, fully informing users of the core risk information and urging immediate action.

[0091] The early warning command visualization mapping, in this embodiment, can accurately map early warning commands to the 3D image data model of the gate according to the risk location, using point, line, and surface highlighting, with colors corresponding to the early warning level. Points mark stress concentration and local weld cracking risk points with risk indices; lines mark weld cracking risk along the line, with line thickness corresponding to the risk level; surfaces mark areas of structural strength attenuation and excessive wear, with transparency reflecting the risk level, achieving precise visual positioning of risks.

[0092] Furthermore, the embodiments of this application can classify and store various collected structural parameters, hydraulic motion parameters, detection data, frequency calculation results, multi-factor fusion index, crack risk quantification index, safety level judgment results, early warning records, control commands and execution effects in different time periods. It also supports data query, statistical analysis and historical trend display by time, monitoring point, risk type, early warning level and other dimensions. At the same time, it can rely on historical data to judge the defect development law, resonance law and control effect, generate visualization results, and provide comprehensive and accurate data support for the daily maintenance, planned maintenance, transformation and upgrading and life assessment of the gate, so as to realize intelligent operation and maintenance of the flood discharge gate throughout its entire life cycle.

[0093] Optionally, in one embodiment of this application, obtaining the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated includes: determining the defect level of the flood discharge gate to be evaluated based on the defect characteristics of the flood discharge gate to be evaluated; obtaining the service life and rated opening and closing rate of the flood discharge gate to be evaluated; and determining the corresponding gate opening and closing rate safety threshold based on the defect level, service life, and rated opening and closing rate.

[0094] As one possible approach, embodiments of this application can first determine the corresponding defect level based on the defect characteristics of the flood discharge gate to be evaluated, and obtain the service life and rated opening and closing rate of the flood discharge gate to be evaluated, thereby determining the safe threshold for the gate opening and closing rate based on the defect level, service life, and rated opening and closing rate.

[0095] Among them, the defect level can be divided into no obvious defects, minor defects, and defects exceeding the standard, etc., and this application does not impose specific restrictions.

[0096] Among them, "no obvious defects" can be understood as the tested object not being found to have defects that meet the evaluation criteria for minor defects or defects exceeding the standard, that is, there are no visible or measurable damage marks on the surface or inside.

[0097] Minor defects can be understood as defects whose test results do not affect the structural strength. They may include, but are not limited to: defects rated as Grade I in surface testing (such as linear defects in welds with a length L ≤ 1.5 mm in magnetic particle and penetrant testing); internal defects in welds rated as Grade I or II in ultrasonic testing; defects rated as Grade A (minor corrosion) or Grade B (general corrosion) in corrosion testing; and defects where the wall thickness is reduced but the remaining wall thickness is greater than the minimum strength calculated wall thickness and the strength meets the usage requirements. The specific settings can be made by those skilled in the art according to the actual situation, and this application does not impose specific limitations.

[0098] Exceeding the standard can be understood as defects whose test results have endangered structural safety or failed to meet the specifications. These may include, but are not limited to, dangerous defects that are not allowed, such as cracks, lack of fusion, and incomplete penetration; surface defects of welds with a length ≥1.5mm and rated as Class II in surface testing; internal defects of welds rated as Class III in ultrasonic testing; defects rated as Class C (severe corrosion) or Class D (major corrosion) in corrosion testing; and defects where the remaining wall thickness after wall thickness reduction is less than the minimum strength calculated wall thickness and the strength does not meet the requirements. The specific settings can be determined by those skilled in the art according to the actual situation, and this application does not impose specific restrictions.

[0099] Service life = assessment date - initial commissioning date; if the gate has undergone major modifications (such as replacement of the main structure or overall repair of the welds), the service life shall be recalculated from the date of commissioning after the modification is completed. The above is only an example, and the specific settings can be made by those skilled in the art according to the actual situation. This application does not impose specific restrictions.

[0100] Furthermore, in the embodiments of this application, when the service life is ≤10 years and there are no obvious defects, the gate opening and closing rate safety threshold is determined as a first-level threshold, and its calculation formula is: threshold = rated opening and closing rate × 100%; when the service life is 10-20 years or there are minor defects, the gate opening and closing rate safety threshold is determined as a second-level threshold, and its calculation formula is: threshold = rated opening and closing rate × 70%; when the service life is >20 years or there are defects exceeding the standard, the gate opening and closing rate safety threshold is determined as a third-level threshold, and its calculation formula is: threshold = rated opening and closing rate × 50%.

[0101] In addition, the fatigue resistance of metallic materials (the faster the opening and closing rate, the higher the frequency of alternating loads, and the more severe the fatigue damage), the better the material (the higher the fatigue strength), and the higher the safety threshold of the gate opening and closing rate (allowing for a faster opening and closing rate) under the same service life and defect conditions.

[0102] Optionally, in one embodiment of this application, determining the safety level of the flood discharge gate to be evaluated based on the gate opening and closing rate safety threshold and the cracking risk quantification index includes: comparing the gate opening and closing rate safety threshold with a first preset threshold to obtain a first comparison result; comparing the cracking risk quantification index with a second preset threshold to obtain a second comparison result; and determining the safety level based on the first comparison result and the second comparison result.

[0103] It is understood that in the embodiments of this application, the security level can be divided into four levels: Level 1 security (no risk), Level 2 security (low risk), Level 3 security (medium risk), and Level 4 security (high risk). The specific level can be set by those skilled in the art according to the actual situation, and this application does not impose any specific restrictions.

[0104] In some embodiments, this application may first compare a gate opening / closing rate safety threshold with a first preset threshold to obtain a first comparison result, and then compare a cracking risk quantification index with a second preset threshold to obtain a second comparison result. Based on the first and second comparison results, the corresponding safety level may be determined. The first and second preset thresholds can be set by those skilled in the art according to actual conditions, and this application does not impose specific limitations.

[0105] Specifically, in this application embodiment, each indicator can be compared with a preset threshold to determine the security level according to the following criteria: If , , If the actual gate opening and closing rate is less than the gate opening and closing rate safety threshold, then the safety level is determined to be Level 1 safety (no risk); if ,or ,or If the actual gate opening and closing rate slightly exceeds the gate opening and closing rate safety threshold (e.g., the proportion of the actual gate opening and closing rate exceeding the gate opening and closing rate safety threshold is ≤10%, this application does not impose a specific limit), then the safety level is determined to be Level 2 safety (low risk); if ,or ,or If the proportion of actual gate opening and closing rates exceeding the gate opening and closing rate safety threshold is ≤20%, then the safety level is determined to be Level 3 safety (medium risk) for opening and closing rate. ,or ,or If the proportion of actual gate opening and closing rates exceeding the gate opening and closing rate safety threshold is greater than 20%, then the safety level is determined to be Level 4 (high risk).

[0106] Optionally, in one embodiment of this application, it further includes: executing early warning instructions and / or visualization instructions; determining the opening and closing rate scheduling instructions and opening degree scheduling instructions of the flood discharge gate to be evaluated based on the safety level; and controlling the flood discharge gate to be evaluated to execute the opening and closing rate scheduling instructions and opening degree scheduling instructions.

[0107] In some embodiments, the present application embodiments may first execute the corresponding early warning command and / or visualization display command, and determine the opening and closing rate scheduling command and opening degree scheduling command of the flood discharge gate to be evaluated according to the corresponding safety level, thereby controlling the flood discharge gate to be evaluated to execute the opening and closing rate scheduling command and opening degree scheduling command to ensure gate safety.

[0108] For example, embodiments of this application can match control strategies according to safety level, resonance type, and cracking risk type, and issue opening and closing rate scheduling instructions and opening degree scheduling instructions to the gate actuator. For instance, under the safety level of Level II, the gate opening and closing rate is automatically adjusted to within the corresponding gate opening and closing rate safety threshold, limiting the gate opening degree increase to ≤5% / min, and the vibration frequency and cracking risk index are monitored in real time. Under the safety level of Level III, the gate opening and closing rate is reduced to 80% of the corresponding gate opening and closing rate safety threshold, the gate opening degree increase is closed, the gate opening degree is adjusted to a safe range where the water flow velocity is stable, and the water flow excitation frequency is reduced. Under the safety level of Level IV, the gate opening and closing operation is immediately stopped, the gate opening and closing rate is adjusted to 0, and the gate opening degree is automatically adjusted to the minimum resonance risk range according to the reservoir capacity and upstream water volume. If the cracking risk index is ≥0.8, the on-site shutdown and maintenance process is triggered simultaneously.

[0109] Furthermore, in this embodiment, the operating parameters are smoothly adjusted by controlling the gate actuator. Each acquisition and detection module obtains the adjusted data in real time, and the analysis is used to re-complete frequency analysis, risk quantification, and safety level determination. When the safety level recovers to level one or two, the warning is automatically lifted and routine monitoring resumes; if there is no improvement, the optimization strategy is continuously adjusted; when the safety level is level four and the cracking risk index is ≥0.8, on-site shutdown and maintenance are triggered simultaneously, and the gate is locked. After maintenance is completed, the gate is unlocked, achieving real-time risk mitigation and closed-loop control, fundamentally avoiding gate failure accidents caused by the superposition of resonance and structural defects.

[0110] It should be noted that, according to the embodiments of this application, the gate opening and closing rate and opening control threshold under different risk types and different safety levels can be dynamically optimized based on the gate's historical operation data, early warning and handling records and crack risk development trends, so that the control strategy is more in line with the actual operating conditions of the gate and the accuracy of risk mitigation can be improved.

[0111] Furthermore, the embodiments of this application also support bidirectional switching between local automatic control and remote manual intervention. The main control module can interact with the water conservancy hub central control system and the hydropower station safety monitoring platform for data exchange and command docking. Operation and maintenance personnel can view the three-dimensional image data model of the gate, early warning commands and operating status through the remote platform and manually issue control commands to meet the centralized management and control needs of the water conservancy hub.

[0112] According to the safety assessment method for flood discharge gates proposed in this application, based on the obtained structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be assessed, the corresponding water flow excitation frequency and gate opening and closing excitation frequency can be determined, thereby determining the cracking risk quantification index of the flood discharge gate to be assessed. Combined with the corresponding gate opening and closing rate safety threshold, the safety level can be determined, thereby generating corresponding early warning instructions and / or visualization display instructions. By collecting structural, geometric stress, and hydraulic condition data of the flood discharge gate from multiple dimensions, the water flow and opening and closing excitation frequencies can be accurately determined, thereby obtaining an objective and reliable cracking risk quantification index. Combined with the rate safety threshold, graded safety judgment, early warning, and visualization instruction output can be realized, thereby achieving a comprehensive quantitative assessment of the gate's safety status, improving the accuracy of safety judgment and the timeliness of early warning, and providing a reliable basis for gate safety management. Consequently, the relevant technologies cannot fully reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, cannot achieve accurate quantitative assessment of cracking risk, cannot form quantitative and controllable opening and closing parameter thresholds, and the early warning information, visualization display and automatic control are difficult to coordinate and link, thus failing to ensure the long-term safe, stable and intelligent operation of flood discharge gates in water conservancy projects.

[0113] Next, the safety assessment device for a floodgate according to an embodiment of this application is described with reference to the accompanying drawings.

[0114] Figure 2This is a block diagram of a safety assessment device for a floodgate provided according to an embodiment of this application.

[0115] like Figure 2 As shown, the safety assessment device 10 for the floodgate includes: an acquisition module 100, a first determination module 200, and a generation module 300.

[0116] The acquisition module 100 is used to acquire the structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated.

[0117] The first determining module 200 is used to determine the flow excitation frequency and gate opening and closing excitation frequency of the flood discharge gate to be evaluated based on structural data, geometric feature stress data and hydraulic condition data, and to determine the cracking risk quantification index of the flood discharge gate to be evaluated based on structural data, geometric feature stress data, hydraulic condition data, flow excitation frequency and gate opening and closing excitation frequency.

[0118] The generation module 300 is used to obtain the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated, and based on the gate opening and closing rate safety threshold and the crack risk quantification index, determine the safety level of the flood discharge gate to be evaluated, and generate corresponding early warning instructions and / or visualization display instructions according to the safety level.

[0119] Optionally, in one embodiment of this application, the first determining module 200 includes: a first determining unit, a first calculating unit, a first acquiring unit, and a second determining unit.

[0120] The first determining unit is used to determine the initial gate opening and closing rate of the flood discharge gate to be evaluated based on structural data, geometric feature force data and hydraulic condition data.

[0121] The first calculation unit is used to calculate the initial water flow excitation frequency and the initial gate opening and closing excitation frequency of the flood discharge gate to be evaluated based on the initial gate opening and closing rate.

[0122] The first acquisition unit is used to acquire the natural vibration frequency of the flood discharge gate to be evaluated.

[0123] The second determining unit is used to determine the water flow excitation frequency and the gate opening and closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency.

[0124] Optionally, in one embodiment of this application, the second determining unit includes: an acquisition subunit, a calculation subunit, and an update subunit.

[0125] The acquisition subunit is used to acquire the comparison results of the initial water flow excitation frequency and the initial gate opening and closing excitation frequency, and to determine the corresponding dominant excitation frequency based on the comparison results.

[0126] The calculation sub-unit is used to calculate the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency.

[0127] The update sub-unit is used to iteratively update the initial water flow excitation frequency and the initial gate opening and closing excitation frequency based on the resonance deviation rate when the resonance deviation rate is less than the preset deviation threshold, until the resonance deviation rate is greater than or equal to the preset deviation threshold, so as to determine the water flow excitation frequency and the gate opening and closing excitation frequency.

[0128] Optionally, in one embodiment of this application, the first determining module 200 includes: a second calculation unit, a third calculation unit, and a first generating unit.

[0129] The second calculation unit is used to calculate the multi-factor comprehensive index of the flood discharge gate to be evaluated based on structural data, geometric feature force data, hydraulic condition data, water flow excitation frequency and gate opening and closing excitation frequency.

[0130] The third calculation unit is used to calculate the weld fatigue cracking risk index and brittle cracking risk index of the flood discharge gate to be evaluated based on a multi-factor comprehensive index.

[0131] The first generation unit is used to obtain a cracking risk quantification index based on a multi-factor comprehensive index, a weld fatigue cracking risk index, and a brittle cracking risk index.

[0132] Optionally, in one embodiment of this application, the generation module 300 includes: a third determining unit, a second obtaining unit, and a fourth determining unit.

[0133] The third determining unit is used to determine the defect level of the flood discharge gate to be evaluated based on its defect characteristics.

[0134] The second acquisition unit is used to acquire the service life and rated opening and closing rate of the flood discharge gate to be evaluated.

[0135] The fourth determining unit is used to determine the corresponding gate opening and closing rate safety threshold based on the defect level, service life, and rated opening and closing rate.

[0136] Optionally, in one embodiment of this application, the generation module 300 includes: a second generation unit, a third generation unit, and a fifth determination unit.

[0137] The second generation unit is used to compare the gate opening and closing rate safety threshold with the first preset threshold to obtain the first comparison result.

[0138] The third generation unit is used to compare the cracking risk quantification index and the second preset threshold to obtain the second comparison result.

[0139] The fifth determining unit is used to determine the security level based on the first comparison result and the second comparison result.

[0140] Optionally, in one embodiment of this application, it further includes: a second determining module and an execution module.

[0141] The second determining module is used to execute early warning instructions and / or visualization display instructions, and to determine the opening and closing rate scheduling instructions and opening degree scheduling instructions of the flood discharge gate to be evaluated based on the safety level.

[0142] The execution module is used to control the flood discharge gates to be evaluated to execute opening and closing rate scheduling commands and opening degree scheduling commands.

[0143] It should be noted that the foregoing explanation of the safety assessment method embodiment for flood discharge gates also applies to the safety assessment device for flood discharge gates in this embodiment, and will not be repeated here.

[0144] According to the safety assessment device for flood discharge gates proposed in this application, based on the acquired structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be assessed, the corresponding water flow excitation frequency and gate opening and closing excitation frequency can be determined, thereby determining the cracking risk quantification index of the flood discharge gate to be assessed. Combined with the corresponding gate opening and closing rate safety threshold, the safety level can be determined, thereby generating corresponding early warning instructions and / or visualization display instructions. By collecting structural, geometric stress, and hydraulic condition data of the flood discharge gate from multiple dimensions, the water flow and opening and closing excitation frequencies can be accurately determined, thereby obtaining an objective and reliable cracking risk quantification index. Combined with the rate safety threshold, graded safety judgment, early warning, and visualization instruction output can be realized, thereby achieving a comprehensive quantitative assessment of the gate's safety status, improving the accuracy of safety judgment and the timeliness of early warning, and providing a reliable basis for gate safety management. Consequently, the relevant technologies cannot fully reflect the coupling degradation mechanism of gate structural defects and multi-frequency resonance, cannot achieve accurate quantitative assessment of cracking risk, cannot form quantitative and controllable opening and closing parameter thresholds, and the early warning information, visualization display and automatic control are difficult to coordinate and link, thus failing to ensure the long-term safe, stable and intelligent operation of flood discharge gates in water conservancy projects.

[0145] Figure 3 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. The electronic device may include: The memory 301, the processor 302, and the computer program stored on the memory 301 and capable of running on the processor 302.

[0146] When the processor 302 executes the program, it implements the safety assessment method for the floodgate provided in the above embodiments.

[0147] Furthermore, electronic devices also include: Communication interface 303 is used for communication between memory 301 and processor 302.

[0148] The memory 301 is used to store computer programs that can run on the processor 302.

[0149] The memory 301 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0150] If the memory 301, processor 302, and communication interface 303 are implemented independently, then the communication interface 303, memory 301, and processor 302 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 3 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0151] Optionally, in a specific implementation, if the memory 301, processor 302, and communication interface 303 are integrated on a single chip, then the memory 301, processor 302, and communication interface 303 can communicate with each other through an internal interface.

[0152] Processor 302 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0153] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described safety assessment method for floodgates.

[0154] This application also provides a computer program product, including a computer program that, when executed, implements the above-described safety assessment method for floodgates.

[0155] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0156] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0157] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0158] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0159] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or more of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0160] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0161] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0162] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A safety assessment method for flood discharge gates, characterized in that, Includes the following steps: Obtain structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated; Based on the structural data, the geometric feature stress data, and the hydraulic condition data, the flow excitation frequency and the gate opening and closing excitation frequency of the flood discharge gate to be evaluated are determined. Based on the structural data, the geometric feature stress data, the hydraulic condition data, the flow excitation frequency, and the gate opening and closing excitation frequency, the cracking risk quantification index of the flood discharge gate to be evaluated is determined. Obtain the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated, and determine the safety level of the flood discharge gate to be evaluated based on the gate opening and closing rate safety threshold and the crack risk quantification index, and generate corresponding early warning instructions and / or visualization display instructions according to the safety level. The step of determining the flow excitation frequency and gate opening / closing excitation frequency of the flood discharge gate to be evaluated based on the structural data, the geometric feature force data, and the hydraulic condition data includes: Based on the structural data, the geometric feature stress data, and the hydraulic condition data, the initial gate opening and closing rate of the flood discharge gate to be evaluated is determined. Based on the initial gate opening and closing rate, calculate the initial water flow excitation frequency and the initial gate opening and closing excitation frequency of the flood discharge gate to be evaluated; Obtain the natural vibration frequency of the flood discharge gate to be evaluated; Based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency, the water flow excitation frequency and the gate opening and closing excitation frequency are determined. The quantization formula for the water flow excitation frequency is as follows: ， in, The water flow excitation frequency is expressed in Hz. The correction factor for water flow pulsation is set to 0.8-1.2; The average water flow velocity through the sluice gate is expressed in m / s. Characteristic dimensions of the gate flow channel, in meters (m). The quantification formula for the gate opening and closing excitation frequency is as follows: ， in, The gate opening and closing excitation frequency, in Hz; The transmission ratio of the opening and closing mechanism; The gate opening and closing rate is expressed in m / min. This represents the maximum opening and closing stroke of the gate, in meters (m).

2. The method according to claim 1, characterized in that, The determination of the water flow excitation frequency and the gate opening and closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency, and the initial gate opening and closing excitation frequency includes: Obtain the comparison result between the initial water flow excitation frequency and the initial gate opening and closing excitation frequency, and determine the corresponding dominant excitation frequency based on the comparison result; Calculate the resonance deviation rate between the dominant excitation frequency and the natural vibration frequency; If the resonance deviation rate is less than a preset deviation threshold, the initial water flow excitation frequency and the initial gate opening and closing excitation frequency are iteratively updated based on the resonance deviation rate until the resonance deviation rate is greater than or equal to the preset deviation threshold, so as to determine the water flow excitation frequency and the gate opening and closing excitation frequency.

3. The method according to claim 1, characterized in that, The process of determining the cracking risk quantification index of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, the hydraulic condition data, the water flow excitation frequency, and the gate opening and closing excitation frequency includes: Based on the structural data, the geometric feature force data, the hydraulic condition data, the water flow excitation frequency, and the gate opening and closing excitation frequency, the multi-factor comprehensive index of the flood discharge gate to be evaluated is calculated; Based on the multi-factor comprehensive index, the weld fatigue cracking risk index and brittle cracking risk index of the flood discharge gate to be evaluated are calculated. The cracking risk quantification index is obtained based on the multi-factor comprehensive index, the weld fatigue cracking risk index, and the brittle cracking risk index.

4. The method according to claim 1, characterized in that, The process of obtaining the safe threshold for the gate opening and closing rate of the flood discharge gate to be evaluated includes: Based on the defect characteristics of the flood discharge gate to be evaluated, the defect level of the flood discharge gate to be evaluated is determined; Obtain the service life and rated opening and closing rate of the flood discharge gate to be evaluated; Based on the defect level, the service life, and the rated opening and closing rate, a corresponding gate opening and closing rate safety threshold is determined.

5. The method according to claim 1, characterized in that, The process of determining the safety level of the flood discharge gate to be evaluated based on the gate opening and closing rate safety threshold and the cracking risk quantification index includes: The gate opening and closing rate safety threshold is compared with the first preset threshold to obtain the first comparison result; The cracking risk quantification index and the second preset threshold are compared to obtain a second comparison result; The security level is determined based on the first comparison result and the second comparison result.

6. The method according to claim 1, characterized in that, Also includes: Execute the warning command and / or the visualization command, and determine the opening and closing rate scheduling command and opening degree scheduling command of the flood discharge gate to be evaluated based on the safety level; The floodgate to be evaluated is controlled to execute the opening and closing rate scheduling command and the opening degree scheduling command.

7. A safety assessment device for a flood discharge gate, characterized in that, include: The acquisition module is used to acquire structural data, geometric stress data, and hydraulic condition data of the flood discharge gate to be evaluated. The first determining module is used to determine the water flow excitation frequency and the gate opening and closing excitation frequency of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data and the hydraulic condition data, and to determine the cracking risk quantification index of the flood discharge gate to be evaluated based on the structural data, the geometric feature stress data, the hydraulic condition data, the water flow excitation frequency and the gate opening and closing excitation frequency. The generation module is used to obtain the gate opening and closing rate safety threshold of the flood discharge gate to be evaluated, and based on the gate opening and closing rate safety threshold and the crack risk quantification index, determine the safety level of the flood discharge gate to be evaluated, and generate corresponding early warning instructions and / or visualization display instructions according to the safety level. The first determining module includes: The first determining unit is used to determine the initial gate opening and closing rate of the flood discharge gate to be evaluated based on the structural data, the geometric feature force data and the hydraulic condition data. The first calculation unit is used to calculate the initial water flow excitation frequency and the initial gate opening and closing excitation frequency of the flood discharge gate to be evaluated based on the initial gate opening and closing rate. The first acquisition unit is used to acquire the natural vibration frequency of the flood discharge gate to be evaluated; The second determining unit is used to determine the water flow excitation frequency and the gate opening and closing excitation frequency based on the natural vibration frequency, the initial water flow excitation frequency and the initial gate opening and closing excitation frequency; The quantization formula for the water flow excitation frequency is as follows: ， in, The water flow excitation frequency is expressed in Hz. The correction factor for water flow pulsation is set to 0.8-1.2; The average water flow velocity through the sluice gate is expressed in m / s. Characteristic dimensions of the gate flow channel, in meters (m). The quantification formula for the gate opening and closing excitation frequency is as follows: ， in, The gate opening and closing excitation frequency, in Hz; The transmission ratio of the opening and closing mechanism; The gate opening and closing rate is expressed in m / min. This represents the maximum opening and closing stroke of the gate, in meters (m).

8. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the safety assessment method for a floodgate as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the safety assessment method for floodgates as described in any one of claims 1-6.

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