An integrated water conservancy project safety monitoring and early warning device and system

Abstract

The present invention relates to the technical field of water conservancy data processing, and specifically to an integrated water conservancy project safety monitoring and early warning device and system. The invention analyzes the distribution of the flow velocity increase degree at each location at each moment, and screens out the leakage moment of the suspected leakage location; according to the rainfall at each moment within the time neighborhood of each suspected leakage location at each leakage moment, and the relative distance between the rainfall location and the suspected leakage location, the degree of rainfall influence is analyzed to obtain the flow velocity increase update degree at each location at each moment; according to the distribution of the flow velocity increase update degree at different locations at all moments, the leakage location and the leakage severity of the leakage location are obtained; and the dam leakage is monitored. The present invention takes into account the influence of rainfall, obtains the accurate flow velocity increase degree at each location at each moment, and improves the accuracy of safety monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy data processing, and in particular to an integrated water conservancy project safety monitoring and early warning device and system. Background Art

[0002] Water conservancy project safety monitoring refers to the continuous and systematic monitoring and evaluation of water conservancy projects in order to timely discover and prevent potential engineering safety hazards, ensure the safe operation of water conservancy projects and the safety of the surrounding environment. In water conservancy project safety monitoring, dam leakage is one of the common problems in water conservancy projects. If it is not discovered and handled in time, it may cause damage to the project structure and safety hazards. Therefore, monitoring the leakage location is an important part of water conservancy project management and maintenance.

[0003] In the prior art, the leakage of the dam is monitored based on the leakage threshold obtained through human experience. However, since the water flow rate in the water conservancy project may be greatly affected by external factors such as rainfall, there are errors in the analysis of the water flow rate. The traditional method cannot accurately locate the leakage position and monitor the leakage situation, and the effect of water conservancy project safety early warning is poor. Summary of the invention

[0004] In order to solve the technical problem that the analysis of water flow velocity is greatly affected by external factors such as rainfall, the purpose of the present invention is to provide an integrated water conservancy project safety monitoring and early warning device and system, and the technical solution adopted is as follows:

[0005] The present invention proposes an integrated water conservancy project safety monitoring and early warning device, the device comprising:

[0006] The water flow rate and rainfall data acquisition module is used to obtain the water flow rate at each position along the water flow direction at the edge of the dam at each moment, as well as the rainfall and rainfall position at each moment;

[0007] The suspected leakage location screening module is used to obtain the flow velocity increase degree of each location at each moment according to the change trend of the water flow velocity between each location at each moment and the adjacent moment; and to screen out the leakage moment of the suspected leakage location according to the distribution of the flow velocity increase degree of different locations at all moments;

[0008] The flow velocity increase degree adjustment module is used to obtain the rainfall influence degree of each suspected leakage position at each leakage moment according to the rainfall at each moment within the time neighborhood range of each suspected leakage position at each leakage moment, and the relative distance between the rainfall position and the suspected leakage position; adjust the flow velocity increase degree of each position at each moment according to the rainfall influence degree of each suspected leakage position at each leakage moment, and obtain the updated flow velocity increase degree of each position at each moment;

[0009] A leakage location and severity determination module, used to obtain the leakage location and the leakage severity of the leakage location according to the distribution of the flow velocity increase update degree at different locations at all times;

[0010] The leakage monitoring module is used to monitor the leakage of the dam according to the leakage severity of the leakage location.

[0011] Furthermore, the method for obtaining the degree of flow velocity increase includes:

[0012] At each position, the degree of increase in flow velocity at each position at each moment is obtained based on the difference in water flow velocity between each moment and different adjacent moments. The difference in water flow velocity is positively correlated with the degree of increase in flow velocity.

[0013] Furthermore, the method for obtaining the leakage time of the suspected leakage position includes:

[0014] The average value of the flow velocity increase degree at each position at all times is obtained as the average flow velocity increase degree;

[0015] If the increase degree of the flow velocity at each position at each moment is greater than the increase degree of the average flow velocity, the moment of the corresponding position is taken as the abnormal moment of each position;

[0016] For all locations, a time window is constructed to traverse all moments. If there are abnormal moments of at least two adjacent locations within the time window, the abnormal moments of the corresponding locations are used as the leakage moments of the suspected leakage locations.

[0017] Furthermore, the method for obtaining the rainfall impact degree includes:

[0018] Obtain the relative distance between the rainfall position and the suspected leakage position at each moment within the time neighborhood of each leakage moment for each suspected leakage position;

[0019] According to the relative distance of each suspected leakage location at each moment within the time neighborhood of each leakage moment, and the rainfall, the rainfall impact degree of each suspected leakage location at each leakage moment is obtained. The relative distance is negatively correlated with the rainfall impact degree, and the rainfall is positively correlated with the rainfall impact degree.

[0020] Furthermore, the method for obtaining the flow velocity increase update degree includes:

[0021] For each suspected leakage location at each leakage moment, the difference between the positive integer 1 and the rainfall impact degree is calculated as the adjustment weight;

[0022] The adjustment weight and the flow velocity increase degree of each suspected leakage position at each leakage moment are merged to obtain the updated flow velocity increase degree of each suspected leakage position at each leakage moment;

[0023] For each moment of each position that does not correspond to a leakage moment of a suspected leakage position, the flow velocity increase degree of each position at each moment is used as the corresponding flow velocity increase update degree.

[0024] Furthermore, the method for obtaining the leakage position includes:

[0025] The average of the flow velocity increase update degree of all positions at all times is obtained as the average flow velocity increase update degree; if the flow velocity increase update degree of each position at any time is greater than the average flow velocity increase update degree, the corresponding position is regarded as the leakage impact position;

[0026] The largest updated degree of flow velocity increase at all leakage-affected locations at all times is obtained, and the corresponding leakage-affected location is taken as the closest leakage location, and the corresponding updated degree of flow velocity increase is taken as the overall flow velocity feature; the largest updated degree of flow velocity increase at all times at each other leakage-affected location within the location neighborhood closest to the leakage location is obtained as the first flow velocity feature of each leakage location within the location neighborhood;

[0027] The leakage position is obtained based on the first flow velocity characteristics of different leakage impact positions within the position neighborhood, the overall flow velocity characteristics, and the relative distance between the corresponding leakage impact position and the closest leakage position.

[0028] Further, the obtaining of the leakage position based on the first flow velocity characteristics of different other leakage-affected positions within the position neighborhood, the overall flow velocity characteristics, and the relative distance between the corresponding leakage-affected position and the closest leakage position includes:

[0029] Based on the first flow velocity characteristics of different other leakage-affected locations within the location neighborhood, the overall flow velocity characteristics, and the relative distances between the corresponding leakage-affected locations and the closest leakage location, a formula for obtaining the relative distances between multiple leakage locations and the closest leakage location is constructed;

[0030] For each leakage impact location within the location neighborhood, the formula for the relative distance between the leakage location and the closest leakage location is:

[0031] ; In the formula, Indicates the location neighborhood The relative distance between the leakage position obtained corresponding to each leakage impact position and the closest leakage position; Indicates the location neighborhood The relative distance between the leakage impact location and the closest leakage location; Represents the overall flow velocity characteristics; Indicates the location neighborhood The first flow velocity characteristics of each leakage-affected location;

[0032] The average of the relative distances between all leakage positions and the closest leakage position is taken as the average relative distance between the leakage position and the closest leakage position; the difference between the closest leakage position and the average relative distance is calculated as the leakage position.

[0033] Furthermore, the method for obtaining the severity of leakage includes:

[0034] The corresponding overall flow velocity characteristics in all positions are normalized to obtain the leakage severity of the leakage position.

[0035] Further, the monitoring of dam leakage according to the leakage severity at the leakage location includes:

[0036] If the leakage severity is less than a preset first leakage threshold, it is determined that the dam leakage is at a first leakage level;

[0037] If the leakage severity is greater than or equal to a preset first leakage threshold and less than a preset second leakage threshold, it is determined that the dam leakage is at a second leakage level;

[0038] If the leakage severity is greater than or equal to the preset second leakage threshold, it is determined that the dam leakage is at the third leakage level;

[0039] The leakage severity is positively correlated with the leakage grade.

[0040] The present invention also proposes an integrated water conservancy project safety monitoring and early warning system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements any one of the steps of the integrated water conservancy project safety monitoring and early warning device.

[0041] The present invention has the following beneficial effects:

[0042] The present invention takes into account that the water flow velocity changes when the dam leaks, and obtains the degree of increase in flow velocity at each position at each moment according to the change trend of the water flow velocity between each position at each moment and the adjacent moment, and quantifies the degree of increase in flow velocity; considering that the influence of leakage on the water flow velocity in position and time is continuous, the leakage moment of the suspected leakage position is screened out according to the distribution of the degree of increase in flow velocity at different positions at all moments; considering that the influence of rainfall will cause the water flow velocity to change, the rainfall influence degree of each suspected leakage position at each leakage moment is obtained according to the rainfall at each moment within the time neighborhood range of each suspected leakage position at each leakage moment, and the relative distance between the rainfall position and the suspected leakage position, and the influence degree of rainfall on the increase in flow velocity is quantified; According to the degree of influence of rainfall on each suspected leakage position at each leakage moment, the degree of increase in flow velocity at each position at each moment is adjusted to obtain the updated degree of flow velocity increase at each position at each moment. Through the adjustment, the interference of rainfall on the degree of increase in flow velocity can be eliminated, so that the degree of increase in flow velocity can better reflect the actual situation of leakage; according to the distribution of the updated degree of increase in flow velocity at different positions at all moments, the leakage position and the severity of leakage at the leakage position are obtained, and the position with significant flow velocity increase characteristics is identified, which is helpful to determine the leakage position and more accurately evaluate the severity of leakage; monitor the leakage of the dam; the present invention takes into account the influence of rainfall, obtains the accurate degree of increase in flow velocity at each position at each moment, and improves the accuracy of safety monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A structural block diagram of an integrated water conservancy project safety monitoring and early warning device provided by an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of the distribution of a floating position provided by an embodiment of the present invention;

[0046] Figure 3 A flow chart of a method for obtaining the leakage time of a suspected leakage location provided by an embodiment of the present invention;

[0047] Figure 4 A flow chart of a method for obtaining a flow rate increase update degree provided by an embodiment of the present invention;

[0048] Figure 5A flow chart of a method for obtaining a leakage position provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the integrated water conservancy project safety monitoring and early warning equipment and system proposed by the present invention, its specific implementation method, structure, characteristics and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0050] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0051] The specific scheme of an integrated water conservancy project safety monitoring and early warning device and system provided by the present invention is described in detail below with reference to the accompanying drawings.

[0052] See also Figure 1 , which shows a structural block diagram of an integrated water conservancy project safety monitoring and early warning device provided by an embodiment of the present invention, the device includes: a water flow rate and rainfall data acquisition module 101, a suspected leakage position screening module 102, a flow rate increase degree adjustment module 103, a leakage position and severity determination module 104 and a leakage monitoring module 105:

[0053] The water flow rate and rainfall data acquisition module 101 is used to obtain the water flow rate at each position along the water flow direction at the edge of the dam at each moment, as well as the rainfall amount and rainfall position at each moment.

[0054] In the embodiments of the present invention, the reservoir dam, as an important water conservancy project facility, undertakes important functions such as regulating water flow, flood control and water supply. If the dam leaks, it may cause damage to the water conservancy project structure and potential safety hazards. Therefore, the present invention analyzes the dam leakage situation in order to monitor and warn the safety of the water conservancy project; first, considering that the water flow rate of the reservoir dam is disturbed by external factors such as rainfall, resulting in problems such as difficulty in separating the main water and the guest water and uncertainty in the actual monitoring, which affect the change of the water flow rate, a plurality of floats with GPS are placed at different positions along the water flow direction near the edge of the dam to monitor the water flow rate, such as Figure 2, showing a schematic diagram of the distribution of the floating position; and using the meteorological station to monitor rainfall information, the water flow velocity at each position along the water flow direction at the edge of the dam at each moment, as well as the rainfall amount and rainfall position at each moment are obtained. Among them, the water flow direction is the direction from the upstream to the downstream; according to the meteorological station upstream of the reservoir dam, the center position of the rainfall area within the dam range at each moment is obtained as the rainfall position, and the rainfall amount corresponding to the rainfall position.

[0055] It should be noted that, in one embodiment of the present invention, the position interval of the float is 20m; the time interval is 1s; in other embodiments of the present invention, the size of the position interval and the time interval are technical means well known to those skilled in the art, and are not limited or elaborated here.

[0056] The suspected leakage location screening module 102 is used to obtain the degree of increase in flow velocity at each location at each moment based on the change trend of water flow velocity within the time neighborhood of each location at each moment; and to screen out the leakage moment of the suspected leakage location based on the distribution of the degree of increase in flow velocity at different locations at all moments.

[0057] When the dam is in a normal state, the water flow rate at each location is maintained at a relatively stable level. When the dam leaks, the pressure on the water at the leakage location suddenly decreases, and the water will flow quickly to the leakage location under the action of other pressures, causing the water flow rate to change greatly. By analyzing the changing trend of the water flow rate at each location within the time neighborhood at each moment, we can understand how the water flow rate at each location changes over time. The greater the changing trend, the more likely it is that the water flow rate will be affected by some reason to change. Therefore, according to the changing trend of the water flow rate at each location within the time neighborhood at each moment, the degree of increase in the flow rate at each location at each moment is obtained.

[0058] Preferably, in one embodiment of the present invention, the method for obtaining the degree of flow velocity increase includes:

[0059] At each position, the degree of increase in flow velocity at each moment in each position is obtained according to the difference in water flow velocity between each moment and different adjacent moments, and the difference in water flow velocity is positively correlated with the degree of increase in flow velocity.

[0060] Among them, the positive correlation means that the dependent variable will increase as the independent variable increases, and the dependent variable will decrease as the independent variable decreases, that is, the greater the difference in water flow rate, the greater the water flow rate at each moment is than the water flow rate at the adjacent moments, and the greater the increase in flow rate at the corresponding moment.

[0061] In one embodiment of the present invention, the formula for the degree of flow velocity increase is expressed as:

[0062] ;

[0063] in, Indicates Position in The degree of increase in flow velocity at the moment; Indicates Position in The water flow rate at the moment; Indicates Position in The moment Water velocity at the adjacent moments; Indicates Position in The number of neighbors of a moment; Represents the normalization function.

[0064] In the formula for the degree of flow velocity increase, Indicates the calculation Position in Moment and The difference in water velocity between adjacent moments, Expressing the Position in The difference in water flow rate between the moment and all adjacent moments is accumulated. The larger the accumulated result, the greater the difference in water flow rate. Position in The greater the water flow rate at the moment than at other moments, Position in The greater the flow rate at the moment.

[0065] It should be noted that, in one embodiment of the present invention, the neighboring moments of each moment are based on each moment, and a preset number of adjacent historical moments are selected as the neighboring moments of each moment, and the preset number is 5; in other implementations of the present invention, the size of the neighboring moments can be set according to the specific circumstances, and will not be limited or elaborated here.

[0066] When the water flow velocity at a location changes, it may be interfered by other factors or sensor abnormalities. Further considering that when the dam leaks, the location and time of the increase in water flow velocity are continuous, resulting in large changes in water flow velocity at multiple locations; therefore, the leakage time of the suspected leakage location is screened out based on the distribution of the increase in flow velocity at different locations at all times.

[0067] Preferably, in one embodiment of the present invention, the method for obtaining the leakage time of the suspected leakage position can be found in Figure 3 , which shows a flow chart of a method for obtaining the leakage time of a suspected leakage location, including:

[0068] Step S301: Obtain the average of the flow velocity increase degrees at each position at all times as the average flow velocity increase degree.

[0069] In order to facilitate data comparison, the increase in flow velocity at each location at all times is quantitatively counted by averaging, which reflects the general level of flow velocity increase at each location. In the subsequent calculation process, the average flow velocity increase is compared to determine whether the flow velocity increase at each location at different times is significant.

[0070] Step S302: If the increase degree of the flow velocity at each position at each moment is greater than the increase degree of the average flow velocity, the moment of the corresponding position is taken as the abnormal moment of each position.

[0071] Since the increase in water flow rate may be caused by a variety of factors, including but not limited to leakage, by comparing the moments when the flow rate increase at each location exceeds the average flow rate increase at each moment, it is possible to identify which moments of flow rate increase are abnormal and more likely to be flow rate changes related to leakage.

[0072] Step S303: For all positions, a time window is constructed to traverse all moments. If there are abnormal moments of at least two adjacent positions within the time window, the abnormal moments of the corresponding positions are used as the leakage moments of the suspected leakage positions.

[0073] Since leakage often causes the water flow rate at adjacent locations to change significantly at the same time or successively, a time window is constructed to traverse all moments, and the flow rate changes at adjacent locations within the same time window can be analyzed more intuitively.

[0074] It should be noted that, in one embodiment of the present invention, the size of the time window is 5s. For all positions, the time window is traversed from small to large time, and the status of all positions in the time window is analyzed. In other embodiments of the present invention, the size of the time window can be set according to the specific situation, which is not limited or elaborated here.

[0075] Flow velocity increase degree adjustment module 103: obtain the rainfall influence degree of each suspected leakage location at each leakage moment according to the rainfall at each moment within the time neighborhood of each suspected leakage location at each leakage moment, and the relative distance between the rainfall location and the suspected leakage location; adjust the flow velocity increase degree of each location at each moment according to the rainfall influence degree of each suspected leakage location at each leakage moment, and obtain the updated flow velocity increase degree of each location at each moment.

[0076] When rainfall occurs, the rainfall will increase the water level, and then increase the water flow rate at the rainfall location. Different suspected leakage locations may be affected by different rainfall amounts and rainfall locations. The closer the distance between the rainfall location and the suspected leakage location, the greater the rainfall, the greater the impact on the location, and the greater the degree of rainfall impact. Therefore, based on the rainfall at each suspected leakage location at each moment in the time neighborhood of each leakage moment, and the relative distance between the rainfall location and the suspected leakage location, the degree of rainfall impact at each suspected leakage location at each leakage moment is obtained.

[0077] Preferably, in one embodiment of the present invention, the method for obtaining the rainfall impact degree includes:

[0078] Obtain the relative distance between the rainfall position and the suspected leakage position at each moment within the time neighborhood of each leakage moment for each suspected leakage position;

[0079] According to the relative distance of each suspected leakage location at each moment in the time neighborhood of each leakage moment, and the rainfall, the rainfall impact degree of each suspected leakage location at each leakage moment is obtained. The relative distance is negatively correlated with the rainfall impact degree, and the rainfall is positively correlated with the rainfall impact degree.

[0080] Among them, the positive correlation means that the dependent variable will increase as the independent variable increases, and the dependent variable will decrease as the independent variable decreases, that is, the greater the rainfall, the more the reservoir water level will rise, the greater the water flow rate, and the greater the impact of rainfall; the negative correlation means that the dependent variable will decrease as the independent variable increases, and the dependent variable will increase as the independent variable decreases, that is, the greater the relative distance, the farther the rainfall location is from the suspected leakage location, the more likely the water flow rate will be gradually consumed during the water flow process, the smaller the impact on the suspected leakage location, and the smaller the impact of rainfall.

[0081] In one embodiment of the present invention, the formula for the rainfall impact degree is expressed as:

[0082] ;

[0083] in, Indicates The suspected leakage location is The degree of rainfall impact at the time of leakage; Indicates The suspected leakage location is The number of moments within the temporal neighborhood of the leakage moment; Indicates The suspected leakage location is The serial number of the time in the time neighborhood of the leakage time; Indicates the time neighborhood The rainfall location and The relative distance between the suspected leak locations; Indicates the time neighborhood The amount of rainfall at the time; Represents the normalization function.

[0084] In the formula for rainfall impact, Middle Pair Adding 0.01 can avoid the denominator of the formula being 0, which would make the formula meaningless. The smaller the relative distance between the rainfall location and the suspected leakage location, the greater the rainfall amount and the greater the impact of the rainfall.

[0085] It should be noted that, in one embodiment of the present invention, the time neighborhood range of each leakage moment is based on each leakage moment and is composed of the moments within the preset historical time range, including the leakage moment, and the preset historical time range is 10 minutes; in other embodiments of the present invention, the size of the preset historical time range can be set according to specific circumstances, and is not limited or elaborated here.

[0086] It should be noted that, in one embodiment of the present invention, the method for obtaining the relative distance can be achieved by calculating the Euclidean distance between the rainfall location and the suspected leakage location; in other embodiments of the present invention, other distance algorithms such as Manhattan distance can also be used for calculation. The specific Euclidean distance and Manhattan distance are technical means well known to those skilled in the art and will not be elaborated here.

[0087] Rainfall may cause an increase in water flow rate, and this increase may be similar to the increase in flow rate caused by leakage in terms of manifestation. By considering the impact of rainfall, the part caused by rainfall can be eliminated from the increase in flow rate, avoiding misjudging the water flow change during rainfall as leakage, thereby more accurately identifying the increase in flow rate caused by leakage, reflecting the true impact of leakage on flow rate, and helping to accurately identify the leakage location. Therefore, according to the degree of rainfall impact on each suspected leakage location at each leakage moment, the degree of increase in flow rate at each location at each moment is adjusted to obtain an updated degree of increase in flow rate at each location at each moment.

[0088] Preferably, in one embodiment of the present invention, the method for obtaining the flow rate increase update degree can be found in Figure 4 , which shows a flow chart of a method for obtaining the flow velocity increase update degree, including:

[0089] Step S401: For each suspected leakage location at each leakage moment, the difference between the positive integer 1 and the rainfall impact degree is calculated as an adjustment weight.

[0090] Since rainfall will affect the water flow rate, the greater the impact of rainfall, the more likely the increase in water flow rate is caused by rainfall. By calculating the difference between the positive integer 1 and the rainfall impact, the impact of rainfall on leakage is reflected. The larger the difference, the greater the impact of rainfall on water flow rate, the smaller the increase in flow rate caused by actual leakage, and the smaller the adjustment weight.

[0091] Step S402: The adjustment weight and flow velocity increase degree of each suspected leakage position at each leakage moment are integrated to obtain the updated flow velocity increase degree of each suspected leakage position at each leakage moment.

[0092] It should be noted that, in one embodiment of the present invention, the adjustment weight and the flow velocity increase degree of each suspected leakage position at each leakage moment may be merged by adding or multiplying.

[0093] In one embodiment of the present invention, for each suspected leakage location at each leakage moment, the formula for updating the degree of flow velocity increase is expressed as:

[0094] ;

[0095] in, Indicates The suspected leakage location is The flow rate at the moment of leakage increases the update degree; Indicates The suspected leakage location is The degree of increase in flow velocity at the time of leakage; Indicates The suspected leakage location is The extent of rainfall impact at the time of leakage.

[0096] In the formula for the update degree of flow velocity increase, It means calculating the difference between the positive integer 1 and the influence of rainfall, that is, adjusting the weight. The larger the adjustment weight, the smaller the influence of rainfall, the smaller the increase in water flow rate is affected by rainfall, and the smaller the adjustment of the increase in flow rate is. On the contrary, the smaller the adjustment weight, the greater the influence of rainfall, the greater the increase in water flow rate is affected by rainfall, the greater the adjustment of the increase in flow rate is, and the smaller the corresponding update of flow rate increase is.

[0097] Step S403: For each moment of each position that does not correspond to the leakage moment of the suspected leakage position, the flow velocity increase degree of each position at each moment is used as the corresponding flow velocity increase update degree.

[0098] Since the effects of the leakage location and rainfall on the water flow rate are continuously changing, if the leakage time does not correspond to the suspected leakage location, it is less affected by rainfall. Therefore, there is no need to consider the impact of rainfall, and the increase degree of flow velocity at each location at each moment is taken as the corresponding update degree of flow velocity increase.

[0099] The leakage position and severity determination module 104 is used to obtain the leakage position and the leakage severity of the leakage position according to the distribution of the flow velocity increase update degree at different positions at all times.

[0100] By eliminating the impact of rainfall on leakage, the degree of flow velocity increase and update reflects the actual changes in water flow velocity; by analyzing the distribution characteristics of the degree of flow velocity increase and update at different locations at all times, the locations with significant flow velocity increase characteristics are identified, which helps to determine the leakage location and provide a basis for more accurate assessment of the severity of the leakage; therefore, based on the distribution of the degree of flow velocity increase and update at different locations at all times, the leakage location and the severity of the leakage at the leakage location are obtained.

[0101] Preferably, in one embodiment of the present invention, the method for obtaining the leakage position is as follows: Figure 5 , which shows a flow chart of a method for obtaining a leakage position, including:

[0102] Step S501: Obtain the average of the flow velocity increase update degree of all positions at all times as the average flow velocity increase update degree; if the flow velocity increase update degree of each position at any time is greater than the average flow velocity increase update degree, the corresponding position is regarded as the leakage affected position.

[0103] In order to facilitate data comparison, a benchmark value for comparison was obtained by calculating the average of the updated degree of flow velocity increase at all locations at all times. The locations where the flow velocity increase exceeded the average value were identified and considered to be the locations affected by leakage.

[0104] Step S502: Obtain the largest update degree of flow velocity increase at all leakage affected positions at all times, and use the corresponding leakage affected position as the closest leakage position, and use the corresponding update degree of flow velocity increase as the overall flow velocity characteristic; obtain the largest update degree of flow velocity increase at all times for each other leakage affected position within the position neighborhood closest to the leakage position, and use it as the first flow velocity characteristic of each leakage position within the position neighborhood.

[0105] The degree of update of the maximum flow velocity increase at each leakage-affected location reflects the direct degree and intensity of the impact of the leakage on that location, which helps to understand the specific impact of the leakage event on that location. By comparing the changes in the maximum flow velocity at different locations, the location corresponding to the degree of update of the maximum flow velocity increase is selected, which may be the area most sensitive to leakage, often closest to the actual leakage point, and may be a structural weakness or an area that requires special attention.

[0106] It should be noted that, when leakage occurs, the upstream water level is higher than the downstream water level, causing the water flow at the upstream position to flow toward the leakage position along the water flow direction, affecting the water flow rate at the leakage position. In one embodiment of the present invention, the position neighborhood range is based on the closest leakage position, and the range composed of the leakage affecting position above the closest leakage position is selected, excluding the closest leakage position, and each leakage affecting position is analyzed; in other embodiments of the present invention, the position neighborhood range can be set according to the specific situation, and is not limited or elaborated here.

[0107] Step S503: Obtain the leakage position based on the first flow velocity characteristics of different leakage impact positions within the position neighborhood, the overall flow velocity characteristics, and the relative distance between the corresponding leakage impact position and the closest leakage position.

[0108] Preferably, in one embodiment of the present invention, since the leakage position will accelerate the flow of upstream water to the leakage position, affecting the flow rate of water, and the closer the upstream area is to the leakage position of the dam, the greater the increase in the flow rate of the water flow, and the leakage position has the largest flow rate increase, the closest leakage position may be located at the leakage position or upstream of the leakage position; based on the first flow rate characteristics of different other leakage-affected positions within the position neighborhood, the overall flow rate characteristics, and the relative distance between the corresponding leakage-affected position and the closest leakage position, the leakage position is obtained, including:

[0109] Based on the first flow velocity characteristics of different other leakage-affected locations within the location neighborhood, the overall flow velocity characteristics, and the relative distance between the corresponding leakage-affected location and the closest leakage location, a formula for obtaining the relative distances between multiple leakage locations and the closest leakage location is constructed;

[0110] For each leakage impact location within the location neighborhood, the formula for the relative distance between the leakage location and the closest leakage location is:

[0111] ; In the formula, Indicates the location neighborhood The relative distance between the leakage position obtained corresponding to each leakage impact position and the closest leakage position; Indicates the location neighborhood The relative distance between the leakage impact location and the closest leakage location; Represents the overall flow velocity characteristics; Indicates the location neighborhood The first flow velocity characteristics of each leakage-affected location;

[0112] in, Indicates the location neighborhood The relative distance between the leakage location corresponding to the leakage impact location and the closest leakage location and the The sum of the relative distances between the leakage impact position and the closest leakage position is taken as the The distance between the leakage impact location and the leakage location, the larger the sum, the greater the distance. The smaller the update degree, the greater the flow velocity increase at each leakage affected location.

[0113] The average of the relative distances between the leakage position and the closest leakage position corresponding to each leakage impact position is taken as the average relative distance between the leakage position and the closest leakage position; the difference between the closest leakage position and the average relative distance is calculated as the leakage position.

[0114] Preferably, in one embodiment of the present invention, the method for obtaining the severity of leakage includes:

[0115] The corresponding overall flow velocity characteristics in all locations are normalized to serve as the leakage severity of the leakage location.

[0116] Among them, the location with the largest overall flow velocity characteristic among all locations corresponds to the location closest to the leakage. Therefore, the larger the overall flow velocity characteristic, the greater the severity of the leakage at the leakage location.

[0117] The leakage monitoring module 105 is used to monitor the leakage of the dam according to the severity of the leakage at the leakage location.

[0118] The severity of leakage reflects the amount of leakage. The greater the severity of leakage, the greater the leakage of the dam, and the more it can reflect the safety problems in the water conservancy project. According to the severity of leakage at the leakage location, the dam leakage is monitored, and the leakage situation is analyzed and handled in time to ensure the safety of the dam.

[0119] Preferably, in one embodiment of the present invention, monitoring the dam leakage according to the leakage severity at the leakage location includes:

[0120] If the severity of leakage is less than the preset first leakage threshold, the dam leakage is judged to be at the first leakage level; if the severity of leakage is greater than or equal to the preset first leakage threshold and less than the preset second leakage threshold, the dam leakage is judged to be at the second leakage level; if the severity of leakage is greater than or equal to the preset second leakage threshold, the dam leakage is judged to be at the third leakage level; the severity of leakage is positively correlated with the leakage level.

[0121] Among them, the positive correlation means that the dependent variable will increase as the independent variable increases, and the dependent variable will decrease as the independent variable decreases, that is, the greater the severity of the leakage, the greater the leakage level, and the greater the impact of the leakage on the dam.

[0122] It should be noted that, in one embodiment of the present invention, the preset first leakage threshold is 0.2, and the preset second leakage threshold is 0.5; in other embodiments of the present invention, the preset first leakage threshold and the preset second leakage threshold can be set according to specific circumstances, and are not limited or elaborated here.

[0123] Based on this, after judging the leakage level of the leakage location, the leakage situation can be analyzed, and abnormal situations can be dealt with in time to ensure the safety of the dam: if it is at the first leakage level, the leakage severity is smaller, and a smaller leakage occurs, which can be further observed and monitored; if it is at the second leakage level, the leakage severity is medium, and the leakage becomes larger, it may also affect the stability of the dam, and the leakage location needs to be repaired; if it is at the third leakage level, the leakage severity is the greatest, and a more serious leakage may occur, and an alarm needs to be issued in time, and the leakage location of the dam must be comprehensively inspected and reinforced.

[0124] In summary, the present invention obtains the flow velocity increase degree of each position at each moment according to the change trend of the water flow velocity between each position at each moment and the adjacent moment, and screens out the leakage moment of the suspected leakage position; obtains the rainfall influence degree of each suspected leakage position at each leakage moment according to the rainfall at each moment within the time neighborhood range of each suspected leakage position at each leakage moment, and the relative distance between the rainfall position and the suspected leakage position; adjusts the flow velocity increase degree of each position at each moment, and obtains the flow velocity increase update degree of each position at each moment; obtains the leakage position and the leakage severity of the leakage position according to the distribution of the flow velocity increase update degree of different positions at all moments; and monitors the leakage of the dam. The present invention takes into account the influence of rainfall, obtains the accurate flow velocity increase degree of each position at each moment, and improves the accuracy of safety monitoring.

[0125] The present invention also proposes an integrated water conservancy project safety monitoring and early warning system, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements any one of the steps of an integrated water conservancy project safety monitoring and early warning device.

[0126] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0127] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. An integrated water conservancy project safety monitoring and early warning device, characterized in that: The device comprises: The water flow rate and rainfall data acquisition module is used to obtain the water flow rate at each position along the water flow direction at the edge of the dam at each moment, as well as the rainfall and rainfall position at each moment; The suspected leakage location screening module is used to obtain the flow velocity increase degree of each location at each moment according to the change trend of the water flow velocity between each location at each moment and the adjacent moment; and to screen out the leakage moment of the suspected leakage location according to the distribution of the flow velocity increase degree of different locations at all moments; The flow velocity increase degree adjustment module is used to obtain the rainfall influence degree of each suspected leakage position at each leakage moment according to the rainfall at each moment within the time neighborhood range of each suspected leakage position at each leakage moment, and the relative distance between the rainfall position and the suspected leakage position; adjust the flow velocity increase degree of each position at each moment according to the rainfall influence degree of each suspected leakage position at each leakage moment, and obtain the updated flow velocity increase degree of each position at each moment; A leakage location and severity determination module, used to obtain the leakage location and the leakage severity of the leakage location according to the distribution of the flow velocity increase update degree at different locations at all times; A leakage monitoring module, used for monitoring the leakage of the dam according to the leakage severity of the leakage location; The method for obtaining the flow velocity increase update degree includes: For each suspected leakage location at each leakage moment, the difference between the positive integer 1 and the rainfall impact degree is calculated as the adjustment weight; The adjustment weight and the flow velocity increase degree of each suspected leakage position at each leakage moment are merged to obtain the updated flow velocity increase degree of each suspected leakage position at each leakage moment; For each moment of each position that does not correspond to the leakage moment of the suspected leakage position, the flow velocity increase degree of each position at each moment is used as the corresponding flow velocity increase update degree; The method for obtaining the leakage position includes: The average of the flow velocity increase update degree of all positions at all times is obtained as the average flow velocity increase update degree; if the flow velocity increase update degree of each position at any time is greater than the average flow velocity increase update degree, the corresponding position is regarded as the leakage impact position; The largest updated degree of flow velocity increase at all leakage-affected locations at all times is obtained, and the corresponding leakage-affected location is taken as the closest leakage location, and the corresponding updated degree of flow velocity increase is taken as the overall flow velocity feature; the largest updated degree of flow velocity increase at all times at each other leakage-affected location within the location neighborhood closest to the leakage location is obtained as the first flow velocity feature of each leakage location within the location neighborhood; Obtaining a leakage position based on the first flow velocity characteristics of different leakage-affected positions within a position neighborhood, the overall flow velocity characteristics, and a relative distance between a corresponding leakage-affected position and a closest leakage position; The obtaining of the leakage position based on the first flow velocity characteristics of different other leakage-affected positions within the position neighborhood, the overall flow velocity characteristics, and the relative distance between the corresponding leakage-affected position and the closest leakage position comprises: Based on the first flow velocity characteristics of different other leakage-affected locations within the location neighborhood, the overall flow velocity characteristics, and the relative distances between the corresponding leakage-affected locations and the closest leakage location, a formula for obtaining the relative distances between multiple leakage locations and the closest leakage location is constructed; For each leakage impact location within the location neighborhood, the formula for the relative distance between the leakage location and the closest leakage location is: ; In the formula, Indicates the location neighborhood The relative distance between the leakage position obtained corresponding to each leakage impact position and the closest leakage position; Indicates the location neighborhood The relative distance between the leakage impact location and the closest leakage location; Represents the overall flow velocity characteristics; Indicates the location neighborhood The first flow velocity characteristics of each leakage-affected location; The average of the relative distances between all leakage positions and the closest leakage position is taken as the average relative distance between the leakage position and the closest leakage position; the difference between the closest leakage position and the average relative distance is calculated as the leakage position.

2. The integrated water conservancy project safety monitoring and early warning device according to claim 1 is characterized in that: The method for obtaining the degree of flow velocity increase includes: At each position, the degree of increase in flow velocity at each position at each moment is obtained based on the difference in water flow velocity between each moment and different adjacent moments. The difference in water flow velocity is positively correlated with the degree of increase in flow velocity.

3. The integrated water conservancy project safety monitoring and early warning device according to claim 1 is characterized in that: The method for obtaining the leakage time of the suspected leakage position includes: The average value of the flow velocity increase degree at each position at all times is obtained as the average flow velocity increase degree; If the increase degree of the flow velocity at each position at each moment is greater than the increase degree of the average flow velocity, the moment of the corresponding position is taken as the abnormal moment of each position; For all locations, a time window is constructed to traverse all moments. If there are abnormal moments of at least two adjacent locations within the time window, the abnormal moments of the corresponding locations are used as the leakage moments of the suspected leakage locations.

4. The integrated water conservancy project safety monitoring and early warning device according to claim 1 is characterized in that: The method for obtaining the rainfall impact degree includes: Obtain the relative distance between the rainfall position and the suspected leakage position at each moment within the time neighborhood of each leakage moment for each suspected leakage position; According to the relative distance of each suspected leakage location at each moment within the time neighborhood of each leakage moment, and the rainfall, the rainfall impact degree of each suspected leakage location at each leakage moment is obtained. The relative distance is negatively correlated with the rainfall impact degree, and the rainfall is positively correlated with the rainfall impact degree.

5. The integrated water conservancy project safety monitoring and early warning device according to claim 1 is characterized in that: The method for obtaining the leakage severity includes: The corresponding overall flow velocity characteristics in all positions are normalized to obtain the leakage severity of the leakage position.

6. The integrated water conservancy project safety monitoring and early warning device according to claim 1 is characterized in that: The monitoring of dam leakage according to the leakage severity at the leakage location includes: If the leakage severity is less than a preset first leakage threshold, it is determined that the dam leakage is at a first leakage level; If the leakage severity is greater than or equal to a preset first leakage threshold and less than a preset second leakage threshold, it is determined that the dam leakage is at a second leakage level; If the leakage severity is greater than or equal to the preset second leakage threshold, it is determined that the dam leakage is at the third leakage level; The leakage severity is positively correlated with the leakage grade.

7. An integrated water conservancy project safety monitoring and early warning system, the system comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of an integrated water conservancy project safety monitoring and early warning device as described in any one of claims 1 to 6 are implemented.

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