Method for evaluating overall safety of drainage structure

Abstract

The invention relates to the technical field of hydraulic structure monitoring, and particularly discloses a drainage structure overall safety assessment method, which comprises the steps of collecting working effect data, characterization state data and working environment data of a drainage structure; processing the working effect data to obtain a stability evaluation index of the drainage structure, processing the characterization state data to obtain a damage evaluation index of the drainage structure, and performing comprehensive analysis to obtain an overall safety evaluation index of the drainage structure; and evaluating the overall drainage structure according to the overall safety evaluation index of the drainage structure. According to the overall safety assessment method for the drainage structure, the durability condition of the structure can be known more accurately, targeted maintenance measures can be made, safety accidents caused by aging, damage and the like of the structure are reduced, the problems existing in the structure can be found and solved in time, and the service life of the structure is prolonged. And the overall safety and stability of the project are ensured, so that measures are taken in advance for early warning and intervention.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic structure monitoring, and in particular to an overall safety assessment method for a spillway structure. Background Art

[0002] At present, the detection of hydraulic structures mostly adopts traditional detection methods, that is, mainly static local detection, such as structural stress and strain measurement, manual appearance detection, visual inspection, rebound method, ultrasonic method, ultrasonic rebound-combined method, acoustic emission technology detection, ground penetrating radar method, infrared imaging method, seismic wave method, impact echo method, CT tomography method, etc., through local detection and static test to obtain information such as structural cracks, deformation, displacement, strain, etc., to analyze the safety, usability, durability, etc. of the structure. Static local detection has its advantages, such as being able to directly obtain specific information on local damage, but it also has disadvantages such as large working surface, long loading time, and high consumption of manpower and material resources. More importantly, it can only evaluate the damage and safety of the local structure, and cannot reflect and evaluate the overall safety of the hydraulic structure.

[0003] For example, the invention patent with announcement number CN111638272B is a system and method for monitoring and warning internal damage of in-service hydraulic concrete structures, including a remote workstation, an on-site workstation and a data collection and warning system. The data collection and warning system and the on-site workstation communicate wirelessly, and the on-site workstation and the remote workstation communicate by wire or wirelessly. The data collection and warning system is deployed on the monitored hydraulic concrete structure.

[0004] For example, the invention patent with announcement number CN118777422A is a device and method for diagnosing and evaluating the health of hydraulic structures based on sound wave reflection, which involves the technical field of health monitoring of hydraulic structures. The device includes a sound wave transmitter for emitting high-frequency sound waves to hydraulic structures; a sound wave receiver for receiving sound waves reflected from hydraulic structures; a signal processing unit for amplifying, filtering and digitally processing received sound wave signals; a data analysis unit for analyzing the characteristics of sound wave signals and identifying structural damage; and a health assessment model built into the data analysis unit, which can assess the health status of hydraulic structures based on damage identification results.

[0005] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application discovered that the above-mentioned technology has at least the following technical problems: the current safety assessment method of the spillway structure focuses more on the local damage and safety of the structure. For structures with hidden parts underwater and buried in the soil, there are often great difficulties in performing static inspections, and even no effective inspection information can be obtained. The inspection of the entire hydraulic structure is still not accurate enough. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method for evaluating the overall safety of a discharge structure, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a method for evaluating the overall safety of a discharge structure, including: collecting working effect data, characterization status data and working environment data of the discharge structure.

[0008] The working effect data are processed to obtain the stability assessment index of the discharge structure, the characterization state data are processed to obtain the damage assessment index of the discharge structure, the working environment data are processed to obtain the environmental interference value, and a comprehensive analysis is performed to obtain the overall safety assessment index of the discharge structure.

[0009] The overall discharge structure is evaluated according to the overall safety evaluation index of the discharge structure, and the evaluation results are obtained and fed back.

[0010] As a further method, the working effect data is processed to obtain a stability evaluation index of the discharge structure. The specific processing process is: the working effect data includes the vibration acceleration, vibration displacement and structural stress of each state monitoring point.

[0011] The critical vibration acceleration, critical vibration displacement and critical structural stress are extracted from the spillway structure database, and the spillway structure stability evaluation index is obtained through comprehensive analysis.

[0012] As a further method, the characterization state data is processed to obtain a leakage structure damage assessment index, and the specific processing process is: the characterization state data includes a leakage structure characterization image, the number of cracks and the width of each crack.

[0013] The standard structure representation image, allowable deviation pixel gray value, critical crack number and critical crack width are extracted from the discharge structure database, and the discharge structure damage assessment index is obtained through comprehensive analysis.

[0014] As a further method, the working environment data is processed to obtain the environmental interference value, and the specific processing process is: the working environment data includes water flow velocity, ambient temperature, water pH value and ambient wind speed.

[0015] The critical water flow velocity, reference standard ambient temperature, allowable deviation ambient temperature, reference standard water body pH value, allowable deviation water body pH value and critical ambient wind speed are extracted from the spillway structure database, and the environmental interference value is obtained through comprehensive analysis. The overall safety assessment threshold correction parameters of the spillway structure are obtained based on the environmental interference value.

[0016] As a further method, the comprehensive analysis obtains the overall safety assessment index of the discharge structure. The specific analysis process is: based on the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value, a comprehensive analysis is performed to obtain the overall safety assessment index of the discharge structure. The overall safety assessment index of the discharge structure is used to quantify the overall safety level of the discharge structure.

[0017] As a further method, the overall safety assessment threshold correction parameter of the discharge structure is obtained according to the environmental interference value processing. The specific matching process is: matching the environmental interference value with the overall safety assessment threshold correction parameter of the discharge structure corresponding to each environmental interference value interval preset in the discharge structure database, and adjusting the overall safety assessment threshold of the discharge structure according to the matched overall safety assessment threshold correction parameter of the discharge structure.

[0018] As a further method, the overall safety assessment threshold of the leakage structure is adjusted according to the correction parameter of the overall safety assessment threshold of the leakage structure obtained by matching. The specific process is: extracting the overall safety assessment threshold of the leakage structure from the leakage structure database, and the overall safety assessment threshold of the leakage structure includes a first threshold of the overall safety assessment of the leakage structure and a second threshold of the overall safety assessment of the leakage structure.

[0019] The first threshold value for the overall safety assessment of the discharge structure and the correction parameter for the threshold value for the overall safety assessment of the discharge structure are added together to obtain an updated first threshold value for the overall safety assessment of the discharge structure.

[0020] The second threshold value for the overall safety assessment of the discharge structure and the correction parameter for the threshold value for the overall safety assessment of the discharge structure are added together to obtain an updated second threshold value for the overall safety assessment of the discharge structure.

[0021] As a further method, the overall safety assessment index of the leakage structure is evaluated according to the overall safety assessment index of the leakage structure, including: comparing the overall safety assessment index of the leakage structure with the first threshold of the updated overall safety assessment of the leakage structure; if the overall safety assessment index of the leakage structure is greater than or equal to the first threshold of the updated overall safety assessment of the leakage structure, no additional operation is performed; if the overall safety assessment index of the leakage structure is less than the first threshold of the updated overall safety assessment of the leakage structure, the monitoring frequency and range of the leakage structure are increased, and the overall safety assessment index of the leakage structure is compared with the second threshold of the updated overall safety assessment of the leakage structure.

[0022] As a further method, the overall safety assessment index of the leakage structure is compared with the second threshold of the overall safety assessment of the updated leakage structure. The specific process is: if the overall safety assessment index of the leakage structure is greater than or equal to the second threshold of the overall safety assessment of the updated leakage structure, no warning operation is performed; if the overall safety assessment index of the leakage structure is less than the second threshold of the overall safety assessment of the updated leakage structure, relevant staff are immediately notified to carry out maintenance.

[0023] As a further method, the overall safety evaluation index of the discharge structure is specifically expressed as:

[0024]

[0025] in, Represents the overall safety assessment index of the discharge structure, represents the stability assessment index of the spillway structure, represents the damage assessment index of the discharge structure, Indicates the environmental interference value, It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set discharge structure stability assessment index. It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set damage assessment index of the discharge structure. It represents the influencing factor of the overall safety assessment of the discharge structure corresponding to the set environmental interference value.

[0026] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0027] (1) The present invention provides a method for evaluating the overall safety of a spillway structure, which can more accurately understand the durability of the structure, help formulate targeted maintenance measures, extend the service life of the structure, reduce safety accidents caused by structural aging, damage, etc., and can promptly discover and solve problems existing in the structure, ensure the overall safety and stability of the project, and help promptly discover safety hazards and potential risks existing in the structure, so as to take measures in advance for early warning and intervention.

[0028] (2) By evaluating the environmental interference value, the present invention helps to understand the performance of the discharge structure in a specific environment, thereby optimizing the structural design, improving the discharge efficiency, and reducing energy loss. It can also identify factors that may affect the stability of the discharge structure and take corresponding reinforcement measures to enhance the overall stability of the structure, thereby further ensuring the safety of the discharge structure in normal operation and extreme conditions.

[0029] (3) The present invention can evaluate the damage assessment index of the spillway structure as a basis for determining maintenance priorities, and judge the degree of damage in different areas based on the evaluation results, so as to formulate a reasonable maintenance plan, give priority to areas with serious damage, ensure the safe operation of the spillway structure, and understand the specific situation and type of damage, so as to further improve the management level of the spillway structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0032] Figure 2 It is a schematic diagram of the functional relationship between the overall safety evaluation index of the discharge structure of the present invention and the stability evaluation index of the discharge structure. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 As shown, the present invention provides a method for evaluating the overall safety of a discharge structure, including: collecting working effect data, characterization state data and working environment data of the discharge structure.

[0035] The working effect data are processed to obtain the stability assessment index of the discharge structure, the characterization state data are processed to obtain the damage assessment index of the discharge structure, the working environment data are processed to obtain the environmental interference value, and a comprehensive analysis is performed to obtain the overall safety assessment index of the discharge structure.

[0036] The overall discharge structure is evaluated according to the overall safety evaluation index of the discharge structure, and the evaluation results are obtained and fed back.

[0037] It should be explained that in this embodiment, the full hydroelastic model of Xiangjiaba (1:80) and Wudongde (1:100) was used to carry out indoor model tests on the dynamic response characteristics of the guide wall structure and the high arch dam spillway structure. Both models are fluid-solid coupling hydroelastic experimental models of flow structure-water flow-foundation-dynamic load established with weighted glue as the material. The hydroelastic model satisfies the material bulk density ratio of 1, the damping ratio ratio of 1, the Poisson's ratio ratio of 1, and the hydraulic and structural dynamic responses are similar.

[0038] Specifically, the working effect data are processed to obtain the stability evaluation index of the discharge structure. The specific processing process is: the working effect data includes the vibration acceleration, vibration displacement and structural stress of each state monitoring point.

[0039] The critical vibration acceleration, critical vibration displacement and critical structural stress are extracted from the spillway structure database, and the spillway structure stability evaluation index is obtained through comprehensive analysis.

[0040] In a specific embodiment, monitoring of vibration acceleration is crucial for evaluating the dynamic response of the spillway structure. By analyzing the vibration acceleration, potential vibration problems, such as resonance, can be identified, so that timely measures can be taken to intervene and prevent structural damage. The vibration acceleration of each state monitoring point can be obtained through an acceleration sensor, such as at the top surface of the guide wall, the back surface, the arch dam top, and the attached structure. Vibration displacement monitoring is an important means to evaluate the deformation of the spillway structure. By monitoring the vibration displacement, the deformation trend and amplitude of the structure can be understood, and then it can be determined whether it is in a safe state. The vibration displacement of each state monitoring point can be obtained through a surface vibration displacement sensor. Structural stress refers to the ratio of the force borne by each monitoring point to its corresponding area under specific working conditions. Structural stress monitoring is of great significance for understanding the stress state of the spillway structure. By monitoring the structural stress, structural stress concentration or abnormal areas can be discovered in time, so as to avoid damage to the structure due to overload. The structural stress of each state monitoring point can be obtained through a stress sensor, such as at the top surface of the guide wall, the section change, the 1 / 4 arch of the arch dam, the arch crown beam, and the two arch ends.

[0041] Furthermore, the specific numerical expression of the spillway structure stability evaluation index is:

[0042]

[0043] in, represents the stability assessment index of the spillway structure, represents the vibration acceleration of the i-th state monitoring point, represents the critical vibration acceleration, represents the vibration displacement of the i-th state monitoring point, represents the critical vibration displacement, represents the structural stress at the jth state monitoring point, represents the critical structural stress, It represents the impact factor of the stability assessment of the discharge structure corresponding to the set vibration acceleration. It represents the impact factor of the stability assessment of the discharge structure corresponding to the set vibration displacement. It represents the impact factor of the spillway structure stability assessment corresponding to the set structural stress, i represents the number of each status monitoring point, i=1,2,3,...,m, and m represents the total number of status monitoring points.

[0044] The algorithm of this embodiment combines the vibration acceleration, vibration displacement and structural stress of each state monitoring point, and comprehensively analyzes to obtain the stability evaluation index of the discharge structure. Mathematically speaking, there is a direct integral relationship between vibration acceleration and vibration displacement, and the frequency distributions of vibration acceleration and vibration displacement usually have similar characteristics, but acceleration is more sensitive to high-frequency components, while vibration displacement is more sensitive to low-frequency components; when the structure is subjected to dynamic loads, structural stress responses will be generated, and these structural stress responses are closely related to vibration acceleration. An increase in vibration acceleration usually leads to an increase in structural stress; vibration displacement and structural stress interact with each other in the discharge structure. On the one hand, the generation of vibration displacement will lead to a redistribution of structural stress inside the structure; on the other hand, changes in structural stress will also affect the deformation of the structure. Comprehensive analysis can obtain a more comprehensive stability evaluation index of the discharge structure.

[0045] Table 1 Example of data for stability evaluation index of spillway structure

[0046] As shown in Table 1, the stability assessment index of the discharge structure is jointly determined by the vibration acceleration, vibration displacement and structural stress of each state monitoring point. In a specific embodiment, m=1, the critical vibration acceleration is 10mm / s², the critical vibration displacement is 15mm, the critical structural stress is 25MPa, the influence factor of the discharge structure stability assessment corresponding to the set vibration acceleration is 0.4, the influence factor of the discharge structure stability assessment corresponding to the set vibration displacement is 0.3, and the influence factor of the discharge structure stability assessment corresponding to the set structural stress is 0.3. This formula takes into account three key factors, namely the vibration acceleration, vibration displacement and structural stress of each state monitoring point, and can obtain more comprehensive structural state information, so as to more accurately assess the health status of the structure, and any abnormality of any parameter may indicate potential problems in the structure. For example, a significant change in vibration displacement may mean that the structure has undergone serious deformation, which can detect potential problems earlier and avoid accidents. It can also predict the degradation rate of the structure, thereby determining the priority and frequency of maintenance, which helps to timely discover and deal with safety hazards in the structure, thereby improving the safety and stability of the structure. By standardizing the vibration acceleration, vibration displacement and structural stress of each condition monitoring point, we ensure that they are compared at the same level, thus improving the fairness and comparability of the evaluation. , and The setting can avoid the safety risk of the discharge structure caused by excessive vibration acceleration, vibration displacement and structural stress. By weighting the influence of vibration acceleration, vibration displacement and structural stress of each state monitoring point, it reflects their relative importance in the evaluation index. The weights of different factors can be adjusted according to different needs, making the model highly adaptable. It is not difficult to see that the smaller the vibration acceleration or vibration displacement or structural stress of each state monitoring point, the greater the stability evaluation index of the discharge structure. By evaluating the stability evaluation index of the discharge structure, safety hazards in the structure can be discovered in time, so that necessary maintenance or reinforcement measures can be taken to prevent accidents. It helps to take preventive measures in advance and reduce the risk of structural damage. A more reasonable maintenance plan can be formulated. For example, for areas or components with lower stability, maintenance and reinforcement can be given priority to ensure the overall stability of the structure. At the same time, quality problems in the construction process can be discovered and rectified in time to ensure the steady improvement of project quality.

[0047] In a specific embodiment, the value range of the leakage structure stability assessment influencing factors corresponding to vibration acceleration, vibration displacement and structural stress is between 0 and 1, which represents the numerical value of the influence degree of vibration acceleration, vibration displacement and structural stress on the leakage structure stability assessment index. Each leakage structure stability assessment influencing factor can be obtained from the leakage structure database. By adjusting the value of the influencing factor, the influence degree of different factors on the final leakage structure stability assessment index can be flexibly adjusted.

[0048] It should be understood that, through the relationship between the vibration acceleration, vibration displacement and structural stress in the historical data and the discharge structure stability assessment index, a mapping set of discharge structure stability assessment influencing factors corresponding to the vibration acceleration, vibration displacement and structural stress is constructed, and the real-time vibration acceleration, vibration displacement and structural stress are input to obtain the corresponding discharge structure stability assessment influencing factors from the mapping set.

[0049] It should be explained that the stability evaluation index of the discharge structure in this embodiment is a quantitative index obtained by analyzing the vibration acceleration, vibration displacement and structural stress of each state monitoring point, and is used to quantify the stability of the discharge structure.

[0050] Specifically, the characterization state data are processed to obtain the leakage structure damage assessment index, and the specific processing process is: the characterization state data includes the leakage structure characterization image, the number of cracks and the width of each crack.

[0051] The standard structure representation image, allowable deviation pixel gray value, critical crack number and critical crack width are extracted from the discharge structure database, and the discharge structure damage assessment index is obtained through comprehensive analysis.

[0052] In this embodiment, the grayscale value of each pixel of the leakage structure representation image and the standard structure representation image is obtained, and each pixel of the leakage structure representation image and the standard structure representation image is matched one by one to obtain the grayscale value of each pixel and the reference standard grayscale value of each pixel.

[0053] In a specific embodiment, the grayscale value can intuitively reflect the physical state of the surface of the structure. By comparing and analyzing the grayscale value difference between the damaged area and the normal area, the damage location can be accurately identified, thereby improving the accuracy of damage detection. The discharge structure representation image can be obtained through drone aerial photography, and then the grayscale value of each pixel can be obtained through image processing software; cracks are one of the common damage forms of discharge structures. Counting the number of cracks helps to understand the distribution and severity of the damage, and provides an important reference for subsequent repair and maintenance work. The number of cracks can be obtained through statistics; crack width is an important indicator to measure the degree of damage. By measuring the crack width, the stability and safety of the structure can be further evaluated, providing a basis for formulating a repair plan, and a vernier caliper can be provided to obtain the crack width.

[0054] Furthermore, the specific numerical expression of the damage assessment index of the discharge structure is:

[0055]

[0056] in, represents the damage assessment index of the discharge structure, represents the gray value of the x-th pixel, Represents the reference standard grayscale value of the x-th pixel, represents the allowable deviation pixel gray value, e represents the natural constant, Indicates the number of cracks, represents the number of critical cracks, represents the width of the jth crack, represents the critical crack width, Indicates the impact factor of the leakage structure damage assessment corresponding to the set pixel gray value, Indicates the impact factor of the discharge structure damage assessment corresponding to the set number of cracks, It represents the impact factor of the discharge structure damage assessment corresponding to the set crack width, x represents the pixel number, x=1,2,3,...,y, y represents the total number of pixels, j represents the crack number, j=1,2,3,...,v, v represents the total number of cracks.

[0057] The algorithm of this embodiment combines the pixel grayscale value, the number of cracks and the width of each crack of the leakage structure, and comprehensively analyzes to obtain the leakage structure damage assessment index. In the image of the leakage structure, the crack area is usually represented by a lower grayscale value, because the cracks often cause less light to be reflected in this area; the number of cracks is determined by identifying the crack area in the image, and the identification of the crack area depends on the difference in pixel grayscale values. By analyzing the grayscale value distribution, the existence and number of cracks can be further confirmed; the calculation of the crack width is usually based on the pixel position of the crack edge. By determining the pixel position of the crack edge, the width of the crack can be calculated. Comprehensive analysis can obtain a more comprehensive, accurate and in-depth leakage structure damage assessment index.

[0058] It should be explained that this embodiment takes into account three key factors, namely the pixel grayscale value, number of cracks and width of each crack of the leakage structure, which can more truly reflect the damage state of the structure, improve the accuracy and reliability of the assessment, and prioritize the damaged areas of the leakage structure to determine which areas need to be repaired and maintained first, which helps to reasonably allocate resources and improve maintenance efficiency. It can also formulate targeted repair plans, which helps to ensure the scientific nature and effectiveness of the repair plans. At the same time, timely detection and repair of damage can reduce the risk of accidents in the structure. By standardizing the pixel grayscale value, number of cracks and width of each crack of the leakage structure, ensuring that they are compared at the same level, the fairness and comparability of the assessment are improved, and at the same time , and The setting of helps to avoid abnormal discharge structure caused by excessive deviation of pixel grayscale value and too many and too large cracks. By weighting the influence of pixel grayscale value, number of cracks and width of each crack on the discharge structure, it reflects their relative importance in the evaluation index. The weights of different factors can be adjusted according to different needs, making the formula highly adaptable. It is not difficult to see that the greater the deviation of pixel grayscale value or the number of cracks or the width of each crack, the greater the damage assessment index of the discharge structure. By evaluating the damage assessment index of the discharge structure, it can be used as a basis for determining maintenance priority, and the degree of damage in different areas can be judged according to the evaluation results, so as to formulate a reasonable maintenance plan, give priority to severely damaged areas, ensure the safe operation of the discharge structure, and understand the specific situation and type of damage, so as to formulate targeted maintenance plans, which will help to timely discover and deal with potential safety hazards and prevent accidents. Reasonable damage assessment and maintenance plans can avoid unnecessary repair and maintenance work, and further improve the management level of the discharge structure.

[0059] In a specific embodiment, the value range of the leakage structure damage assessment influencing factor corresponding to the pixel grayscale value, the number of cracks and the width of each crack is between 0 and 1, which represents the numerical value of the influence of the pixel grayscale value, the number of cracks and the width of each crack on the leakage structure damage assessment index. Each leakage structure damage assessment influencing factor can be obtained from the leakage structure database. By adjusting the value of the influencing factor, the influence of different factors on the final leakage structure damage assessment index can be flexibly adjusted.

[0060] It should be understood that, through the relationship between the pixel grayscale value, the number of cracks and the width of each crack in the historical data and the discharge structure damage assessment index, a mapping set of discharge structure damage assessment influencing factors corresponding to the pixel grayscale value, the number of cracks and the width of each crack is constructed, and the real-time pixel grayscale value, the number of cracks and the width of each crack are input to obtain the corresponding discharge structure damage assessment influencing factors from the mapping set.

[0061] It should be explained that the damage assessment index of the leakage structure in this embodiment is a quantitative index obtained by analyzing the pixel grayscale value, the number of cracks and the width of each crack of the leakage structure, and is used to quantify the degree of damage to the leakage structure.

[0062] Specifically, the working environment data is processed to obtain the environmental interference value, and the specific processing process is: the working environment data includes water flow velocity, environmental temperature, water pH value and environmental wind speed.

[0063] The critical water flow velocity, reference standard ambient temperature, allowable deviation ambient temperature, reference standard water body pH value, allowable deviation water body pH value and critical ambient wind speed are extracted from the spillway structure database, and the environmental interference value is obtained through comprehensive analysis. The overall safety assessment threshold correction parameters of the spillway structure are obtained according to the matching of the environmental interference value.

[0064] In a specific embodiment, by monitoring and controlling the water flow velocity, it is possible to ensure that the discharge structure operates under optimal conditions, avoid overflow or underflow, and thus improve its operating efficiency. The water flow velocity can be obtained by a flow meter; changes in ambient temperature can affect the material properties and operating stability of the discharge structure. By monitoring the ambient temperature, timely measures can be taken to adjust it, such as adopting insulation or cooling measures to ensure the normal operation of the discharge structure. The ambient temperature can be obtained by a thermometer; changes in the pH value of the water body can affect the corrosion rate and material life of the discharge structure. By monitoring the pH value of the water body, potential corrosion problems can be discovered in time, and corresponding protective measures can be taken, such as adding corrosion inhibitors or adjusting water quality to ensure the safety and stability of the discharge structure. The pH value of the water body can be obtained by a pH meter; changes in ambient wind speed can generate dynamic loads on the discharge structure and affect its structural stability. By monitoring the ambient wind speed, the impact of wind loads on the discharge structure can be evaluated, and corresponding reinforcement measures can be taken, such as adding support structures or adjusting structural layouts to ensure the safety and stability of the discharge structure under extreme weather conditions. The ambient wind speed can be obtained by an anemometer.

[0065] Furthermore, the environmental interference value, the specific numerical expression is:

[0066]

[0067] in, represents the environmental interference value, e represents the natural constant, Indicates the water flow velocity, represents the critical water velocity, Indicates the ambient temperature, Indicates reference standard ambient temperature, Indicates the allowable deviation ambient temperature, Indicates the pH value of water. Indicates the pH value of reference standard water. Indicates the allowable deviation of water pH value, Indicates the ambient wind speed, represents the critical ambient wind speed, Indicates the environmental interference factor corresponding to the set water flow rate, Indicates the environmental interference factor corresponding to the set ambient temperature. Indicates the environmental interference factor corresponding to the set water pH value, Indicates the environmental interference impact factor corresponding to the set ambient wind speed.

[0068] The algorithm of this embodiment combines water flow velocity, ambient temperature, pH value of water body and ambient wind speed, and comprehensively analyzes to obtain the environmental interference value. In a specific environment, water flow velocity will affect the heat exchange efficiency of water body, thereby affecting water temperature. Fast-flowing water body will take away more heat, making the water temperature relatively low; when water flows, solutes in water will be stirred, which may increase the alkaline substances in water, thereby increasing the pH value of water; at the same time, the greater the ambient wind speed, the more likely it is to stir the water surface, increase the mixing degree of water body, thereby affecting the water flow velocity; changes in ambient temperature will affect the degree of ionization of water, thereby affecting the pH value of water body. As the temperature rises, the ion product of water becomes larger, the degree of ionization increases, and the concentration of hydroxide and hydrogen ions in water will also change, resulting in changes in pH value; and in areas with greater temperature differences, the ambient wind speed may be relatively large; in certain specific cases, the ambient wind speed will affect the mixing degree and dissolved oxygen content of water body, thereby indirectly affecting the pH value of water body, and comprehensive analysis can obtain more comprehensive environmental interference values.

[0069] It should be explained that four key factors are considered in this embodiment, namely, water flow velocity, ambient temperature, water pH value and ambient wind speed, which can promote the exchange of substances and the replenishment of dissolved oxygen in the water body, help improve water quality, reduce eutrophication of water bodies and the accumulation of pollutants, maintain the balance of the water ecosystem, protect the living environment of aquatic organisms, prevent biological death and ecosystem imbalance caused by pH imbalance, and reduce the disturbance of the ambient wind speed on the water surface, reduce water evaporation and the diffusion of pollutants, help keep the water clean and stable, and further enhance the ability of the spillway structure to resist extreme weather and natural disasters. By optimizing the design and operation of the spillway structure, the negative impact on the surrounding environment can be reduced, the environmental friendliness can be improved, and the sustainable development of the spillway structure can be achieved. By standardizing the water flow velocity, ambient temperature, water pH value and ambient wind speed to ensure that they are compared at the same level, the fairness and comparability of the evaluation are improved, and at the same time , , and The setting helps to avoid abnormal safety and stability of the discharge structure caused by excessive water flow velocity, temperature deviation, pH value deviation and environmental wind speed. By weighting the influence of water flow velocity, ambient temperature, water pH value and ambient wind speed, it reflects their relative importance in the evaluation index. The weights of different factors can be adjusted according to different needs, making the formula very adaptable. It is not difficult to see that the greater the water flow velocity or ambient temperature deviation or water pH value deviation or ambient wind speed, the greater the environmental interference value. By evaluating the environmental interference value, it is helpful to understand the performance of the discharge structure in a specific environment, thereby optimizing the structural design, improving the discharge efficiency, and reducing energy loss. It can identify factors that may affect the stability of the discharge structure, and take corresponding reinforcement measures to enhance the overall stability of the structure. It helps to predict potential risks and take corresponding preventive measures, such as strengthening the structure, adjusting the discharge method, etc., to reduce the possibility of disasters, and further ensure the safety of the discharge structure in normal operation and extreme conditions.

[0070] In a specific embodiment, the environmental interference influencing factors corresponding to water flow velocity, ambient temperature, water body pH value and ambient wind speed have a value range of 0 to 1, which represents the numerical value of the influence of water flow velocity, ambient temperature, water body pH value and ambient wind speed on the environmental interference value. Each environmental interference influencing factor can be obtained from the discharge structure database. By adjusting the value of the influencing factor, the influence of different factors on the final environmental interference value can be flexibly adjusted.

[0071] It should be understood that, through the relationship between the water flow velocity, ambient temperature, water pH value and ambient wind speed and the environmental interference value in the historical data, a mapping set of environmental interference influencing factors corresponding to the water flow velocity, ambient temperature, water pH value and ambient wind speed is constructed, and the real-time water flow velocity, ambient temperature, water pH value and ambient wind speed are input to obtain the corresponding environmental interference influencing factors from the mapping set.

[0072] Specifically, a comprehensive analysis is performed to obtain an overall safety assessment index of the discharge structure. The specific analysis process is as follows: based on the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value, a comprehensive analysis is performed to obtain the overall safety assessment index of the discharge structure. The overall safety assessment index of the discharge structure is used to quantify the overall safety level of the discharge structure.

[0073] Furthermore, the specific numerical expression of the overall safety evaluation index of the discharge structure is:

[0074]

[0075] in, Represents the overall safety assessment index of the discharge structure, represents the stability assessment index of the spillway structure, represents the damage assessment index of the discharge structure, Indicates the environmental interference value, It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set discharge structure stability assessment index. It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set damage assessment index of the discharge structure. It represents the influencing factor of the overall safety assessment of the discharge structure corresponding to the set environmental interference value.

[0076] like Figure 2 As shown, in a specific embodiment, =0.4, =0.3, =0.3. = =0.1, the functional relationship between the overall safety assessment index of the discharge structure and the stability assessment index of the discharge structure is shown in curve a; when = =0.5, the functional relationship between the overall safety assessment index of the discharge structure and the stability assessment index of the discharge structure is shown in curve b; when = =1, the functional relationship between the overall safety assessment index of the discharge structure and the stability assessment index of the discharge structure is shown in curve c.

[0077] The algorithm of this embodiment combines the stability assessment index of the discharge structure, the damage assessment index of the discharge structure and the environmental interference value, and comprehensively analyzes to obtain the overall safety assessment index of the discharge structure. The damaged stability of the discharge structure may lead to an increase in its damage degree, and the increase in the damage degree may further affect the stability of the structure. Therefore, there is a correlation between the stability assessment index and the damage assessment index; the stability assessment index of the discharge structure is an important indicator for measuring the stability of the discharge structure under specific conditions. The increase in the environmental interference value will cause structural vibration and fatigue damage, affect the thermal expansion and contraction properties and corrosion rate of the discharge structure material, and increase the vibration and instability risk of the structure, thereby causing a decrease in the stability of the discharge structure; the environmental interference value also has an important impact on the damage assessment index of the discharge structure. The increase in the environmental interference value will cause scouring, cavitation and other damage to the surface of the discharge structure, and will also cause thermal stress inside the discharge structure, thereby causing cracks and damage, and will also cause rapid corrosion of the discharge structure material and wind erosion and vibration damage to the surface of the discharge structure, thereby increasing the damage assessment index. A more comprehensive overall safety assessment index of the discharge structure can be obtained through comprehensive analysis.

[0078] It should be explained that three key factors are considered in this embodiment, namely, the stability assessment index of the discharge structure, the damage assessment index of the discharge structure, and the environmental interference value, which can more comprehensively and accurately assess the overall performance and health of the discharge structure, help ensure the timely maintenance of key structures, reduce safety accidents and losses caused by improper maintenance, and formulate more scientific and reasonable maintenance and management strategies, thereby extending the service life of the discharge structure. Measures can also be taken in advance to intervene and repair to prevent the occurrence of safety accidents, which helps to gain a deep understanding of the performance characteristics and behavior laws of the discharge structure, and provide a more scientific basis and guidance for future design and maintenance. By weighting the influence of the stability assessment index of the discharge structure, the damage assessment index of the discharge structure, and the environmental interference value, it reflects their relative importance in the assessment index. The weights of different factors can be adjusted according to different needs, making the formula highly adaptable. It is not difficult to see that the larger the stability assessment index of the discharge structure, the smaller the damage assessment index of the discharge structure, or the smaller the environmental interference value, the larger the overall safety assessment index of the discharge structure. By evaluating the overall safety assessment index of the spillway structure, we can more accurately understand the durability of the structure, help formulate targeted maintenance measures, extend the service life of the structure, reduce safety accidents caused by structural aging, damage, etc., and promptly discover and resolve structural problems to ensure the overall safety and stability of the project. It helps to promptly discover safety hazards and potential risks in the structure, so as to take measures in advance for early warning and intervention.

[0079] In a specific embodiment, the value range of the discharge structure overall safety assessment influencing factor corresponding to the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value is between 0 and 1, which represents the numerical value of the influence of the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value on the overall safety assessment index of the discharge structure. Each discharge structure overall safety assessment influencing factor can be obtained from the discharge structure database. By adjusting the value of the influencing factor, the influence of different factors on the final overall safety assessment index of the discharge structure can be flexibly adjusted.

[0080] It should be understood that, through the relationship between the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value in the historical data and the overall safety assessment index of the discharge structure, a mapping set of the discharge structure overall safety assessment influencing factors corresponding to the discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value is constructed, and the real-time discharge structure stability assessment index, the discharge structure damage assessment index and the environmental interference value are input to obtain the corresponding discharge structure overall safety assessment influencing factors from the mapping set.

[0081] In a specific embodiment, an overall safety assessment threshold correction parameter of the leakage structure is obtained according to the environmental interference value processing, and the specific matching process is: matching the environmental interference value with the overall safety assessment threshold correction parameter of the leakage structure corresponding to each environmental interference value interval preset in the leakage structure database, and adjusting the overall safety assessment threshold of the leakage structure according to the matched overall safety assessment threshold correction parameter of the leakage structure.

[0082] Specifically, the overall safety assessment threshold of the leakage structure is adjusted according to the matched correction parameter of the overall safety assessment threshold of the leakage structure. The specific process is: extracting the overall safety assessment threshold of the leakage structure from the leakage structure database, wherein the overall safety assessment threshold of the leakage structure includes a first threshold of the overall safety assessment of the leakage structure and a second threshold of the overall safety assessment of the leakage structure.

[0083] The first threshold value for the overall safety assessment of the discharge structure and the correction parameter for the threshold value for the overall safety assessment of the discharge structure are added together to obtain an updated first threshold value for the overall safety assessment of the discharge structure.

[0084] The second threshold value for the overall safety assessment of the discharge structure and the correction parameter for the threshold value for the overall safety assessment of the discharge structure are added together to obtain an updated second threshold value for the overall safety assessment of the discharge structure.

[0085] Furthermore, the overall discharge structure is evaluated according to the overall safety assessment index of the discharge structure, and also includes: comparing the overall safety assessment index of the discharge structure with the first threshold of the overall safety assessment of the updated discharge structure; if the overall safety assessment index of the discharge structure is greater than or equal to the first threshold of the overall safety assessment of the updated discharge structure, no additional operation is performed; if the overall safety assessment index of the discharge structure is less than the first threshold of the overall safety assessment of the updated discharge structure and the overall safety assessment index of the discharge structure is greater than or equal to the second threshold of the overall safety assessment of the updated discharge structure, the monitoring frequency and scope of the discharge structure are increased, that is, the original monitoring cycle is shortened, for example, from monthly monitoring to weekly or biweekly monitoring, so as to obtain the status information of the discharge structure more frequently, and at the same time, monitoring points are added to the key parts and vulnerable areas of the discharge structure, such as the dam top, dam foundation, flood discharge holes and other positions of the arch dam, and the bottom stress of structures such as piers and guide walls is the largest, so as to have a more comprehensive understanding of the working status of the discharge structure, and compare the overall safety assessment index of the discharge structure with the second threshold of the overall safety assessment of the updated discharge structure.

[0086] It should be explained that, in the present embodiment, the overall safety assessment index of the leakage structure is compared with the second threshold of the overall safety assessment of the updated leakage structure. The specific process is: if the overall safety assessment index of the leakage structure is greater than or equal to the second threshold of the overall safety assessment of the updated leakage structure, no additional operation is performed; if the overall safety assessment index of the leakage structure is less than the second threshold of the overall safety assessment of the updated leakage structure, the relevant staff is immediately notified to carry out maintenance.

[0087] The discharge structure database is used to store the discharge structure related data, including: critical vibration acceleration, critical vibration displacement, critical structural stress, reference standard pixel grayscale value, allowable deviation pixel grayscale value, critical number of cracks, critical crack width, critical water flow velocity, reference standard ambient temperature, allowable deviation ambient temperature, reference standard water body pH value, allowable deviation water body pH value, critical ambient wind speed, the overall safety assessment influencing factor of the discharge structure corresponding to the set discharge structure stability assessment index, the overall safety assessment influencing factor of the discharge structure corresponding to the set discharge structure damage assessment index, the overall safety assessment influencing factor of the discharge structure corresponding to the set environmental interference value, the first threshold value of the overall safety assessment of the discharge structure and the second threshold value of the overall safety assessment of the discharge structure and other indicators.

[0088] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A method for evaluating the overall safety of a discharge structure, characterized in that: include: Collect working effect data, characterization status data and working environment data of the discharge structure; The working effect data is processed to obtain the stability assessment index of the discharge structure, the characterization state data is processed to obtain the damage assessment index of the discharge structure, the working environment data is processed to obtain the environmental interference value, and the overall safety assessment index of the discharge structure is obtained through comprehensive analysis; The overall discharge structure is evaluated according to the overall safety evaluation index of the discharge structure, and the evaluation results are obtained and fed back.

2. The method for overall safety assessment of a discharge structure according to claim 1, characterized in that: The working effect data is processed to obtain the stability evaluation index of the discharge structure, and the specific processing process is as follows: The working effect data include vibration acceleration, vibration displacement and structural stress of each state monitoring point; The critical vibration acceleration, critical vibration displacement and critical structural stress are extracted from the spillway structure database, and the spillway structure stability evaluation index is obtained through comprehensive analysis.

3. The method for overall safety assessment of a discharge structure according to claim 1, characterized in that: The damage assessment index of the discharge structure is obtained by processing the characterization state data, and the specific processing process is as follows: The characterization state data includes a flow discharge structure characterization image, the number of cracks and the width of each crack; The standard structure representation image, allowable deviation pixel gray value, critical crack number and critical crack width are extracted from the discharge structure database, and the discharge structure damage assessment index is obtained through comprehensive analysis.

4. The method for overall safety assessment of a discharge structure according to claim 1, characterized in that: The working environment data is processed to obtain the environmental interference value, and the specific processing process is as follows: The working environment data include water flow velocity, ambient temperature, water pH value and ambient wind speed; The critical water flow velocity, reference standard ambient temperature, allowable deviation ambient temperature, reference standard water body pH value, allowable deviation water body pH value and critical ambient wind speed are extracted from the spillway structure database, and the environmental interference value is obtained through comprehensive analysis. The overall safety assessment threshold correction parameters of the spillway structure are obtained based on the environmental interference value.

5. A method for overall safety assessment of a discharge structure according to claim 4, characterized in that: The comprehensive analysis obtains the overall safety assessment index of the discharge structure. The specific analysis process is as follows: According to the stability assessment index of the discharge structure, the damage assessment index of the discharge structure and the environmental interference value, a comprehensive analysis is conducted to obtain the overall safety assessment index of the discharge structure, which is used to quantify the overall safety level of the discharge structure.

6. A method for evaluating the overall safety of a discharge structure according to claim 4, characterized in that: The correction parameter of the threshold value for assessing the overall safety of the discharge structure is obtained according to the environmental interference value, and the specific matching process is as follows: The environmental interference value is matched with the correction parameters of the overall safety assessment threshold of the discharge structure corresponding to each environmental interference value interval preset in the discharge structure database, and the overall safety assessment threshold of the discharge structure is adjusted according to the correction parameters of the overall safety assessment threshold of the discharge structure obtained by matching.

7. A method for evaluating the overall safety of a discharge structure according to claim 6, characterized in that: The overall safety assessment threshold value of the discharge structure is adjusted according to the correction parameter of the overall safety assessment threshold value of the discharge structure obtained by matching, and the specific process is: Extracting a discharge structure overall safety assessment threshold from a discharge structure database, wherein the discharge structure overall safety assessment threshold includes a discharge structure overall safety assessment first threshold and a discharge structure overall safety assessment second threshold; The first threshold value of the overall safety assessment of the discharge structure and the correction parameter of the threshold value of the overall safety assessment of the discharge structure are added to obtain an updated first threshold value of the overall safety assessment of the discharge structure; The second threshold value for the overall safety assessment of the discharge structure and the correction parameter for the threshold value for the overall safety assessment of the discharge structure are added together to obtain an updated second threshold value for the overall safety assessment of the discharge structure.

8. A method for evaluating the overall safety of a discharge structure according to claim 7, characterized in that: The overall safety assessment index of the discharge structure is used to assess the overall discharge structure, including: The overall safety assessment index of the discharge structure is compared with the first threshold of the updated overall safety assessment of the discharge structure. If the overall safety assessment index of the discharge structure is greater than or equal to the first threshold of the updated overall safety assessment of the discharge structure, no additional operation is performed. If the overall safety assessment index of the discharge structure is less than the first threshold of the updated overall safety assessment of the discharge structure, the monitoring frequency and scope of the discharge structure are increased, and the overall safety assessment index of the discharge structure is compared with the second threshold of the updated overall safety assessment of the discharge structure.

9. A method for evaluating the overall safety of a discharge structure according to claim 8, characterized in that: The specific process of comparing the overall safety assessment index of the discharge structure with the updated second threshold of the overall safety assessment of the discharge structure is as follows: If the overall safety assessment index of the discharge structure is greater than or equal to the second threshold of the updated overall safety assessment of the discharge structure, no warning operation will be performed. If the overall safety assessment index of the discharge structure is less than the second threshold of the updated overall safety assessment of the discharge structure, the relevant staff will be notified immediately to carry out maintenance.

10. A method for overall safety assessment of a discharge structure according to claim 5, characterized in that: The specific numerical expression of the overall safety assessment index of the discharge structure is: ； in, Represents the overall safety assessment index of the discharge structure, represents the stability assessment index of the spillway structure, represents the damage assessment index of the discharge structure, Indicates the environmental interference value, It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set discharge structure stability assessment index. It represents the impact factor of the overall safety assessment of the discharge structure corresponding to the set discharge structure damage assessment index. It represents the influencing factor of the overall safety assessment of the discharge structure corresponding to the set environmental interference value.

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