Information construction monitoring and early warning method and system for high fill slope of transformer substation

Abstract

The application provides a transformer substation high fill slope information construction monitoring and early warning method and system, and belongs to the technical field of slope construction monitoring. According to the horizontal displacement vector, time stamp and spatial coordinates of different filling layer monitoring point groups, the adjacent filling layer monitoring point groups in the same period and with the same direction towards the slope foot are connected to form a candidate deformation influence area, the monitoring point group identifier and the connection relationship are recorded, and the sampling period is shortened; the displacement speed along the slope and the displacement acceleration along the slope are calculated according to the actual time interval, the same connection relationship with the same direction and accelerated deformation at both ends in the continuous evaluation period is retained, and the monitoring point group set with continuous accelerated deformation is formed; the slip risk level is determined according to the duration and spatial coverage range of the monitoring point group set with continuous accelerated deformation, the slope disaster early warning information is generated, and is sent to the information monitoring platform to execute the graded early warning alarm. By using the above scheme, the slope risk response lag can be reduced.

Description

Technical Field

[0001] This application relates to the field of slope construction monitoring technology, and more specifically, to an information-based construction monitoring and early warning method and system for high embankment slopes of substations. Background Technology

[0002] During the construction of high embankment slopes in substations, slope deformation and the state of the fill soil can be tracked by measuring the horizontal coordinates of monitoring piles, vertical settlement, and by installing earth pressure cells and moisture content sensors. After the monitoring data is uploaded to the monitoring platform by the acquisition station, threshold warnings can be issued based on changes in displacement, displacement change rate, and environmental quantities, and the sampling frequency can be increased when there is abnormal rainfall or deformation.

[0003] Filling and compaction processes can cause localized deformation at different locations and at different times, and the continuous slope deformation may simultaneously involve adjacent fill layers. If only the number of abnormal points in each time period is counted, short-term changes occurring at different locations can easily be accumulated into continuous anomalies; extending the confirmation time uniformly to exclude these short-term changes will delay the early warning of continuous spatial linkage deformation, resulting in a lag in slope risk response. Summary of the Invention

[0004] This application provides an information-based construction monitoring and early warning method and system for high embankment slopes in substations, which can reduce the lag in slope risk response.

[0005] Firstly, this application provides an information-based construction monitoring and early warning method for high embankment slopes in substations, comprising the following steps: Obtain the horizontal displacement vectors of each monitoring point group in different filling layers, along with the corresponding timestamps and spatial coordinates; Based on the spatial coordinates, adjacent fill layer monitoring point groups with horizontal displacement vectors pointing towards the slope toe and having the same direction within the same observation period are connected to form candidate deformation influence zones, and the monitoring point group identifiers and connection relationships of the candidate deformation influence zones are recorded. Shorten the sampling period of the monitoring point group within the candidate deformation influence area, and collect horizontal displacement vectors with the monitoring point group identifier and timestamp; According to the actual time interval corresponding to the timestamp, the slope displacement velocity and slope displacement acceleration are determined by the horizontal displacement vector collected after shortening the sampling period. Based on the slope displacement velocity and slope displacement acceleration, the slope acceleration deformation is determined. Based on the monitoring point group identifier, the connection relationship that satisfies the direction consistency and the slope acceleration deformation occurs at both ends of the monitoring point group within the continuous evaluation period is retained to form a monitoring point group set with continuous acceleration deformation. The slip risk level is determined based on the duration and spatial coverage of the monitoring point set that is continuously accelerating deformation. Based on the slip risk level, slope disaster early warning information is generated and sent to the information monitoring platform for graded early warning alarm.

[0006] In conjunction with the first aspect, in one possible implementation, the horizontal displacement vector is determined in the following manner: Read the horizontal coordinates and data collection timestamps of each monitoring point group in a unified plane coordinate system according to the filling layer and monitoring point group identifiers; Based on the collection timestamp, select the start and end times of the effective horizontal coordinates shared by each monitoring point group, and determine the same observation period based on the start and end times; Subtract the starting point's horizontal coordinate from the ending horizontal coordinate of the same observation period to determine the horizontal displacement vector of each monitoring point group, and associate the horizontal displacement vector with the starting and ending times and corresponding spatial coordinates.

[0007] In conjunction with the first aspect, in one possible implementation, the method further includes: Based on the spatial coordinates, determine the adjacent fill layer monitoring point group that is spatially adjacent to the monitoring point group in the candidate deformation influence zone, but has not yet been included in the candidate deformation influence zone; Shorten the sampling period of the adjacent fill layer monitoring point group and collect the horizontal displacement vector of the adjacent fill layer monitoring point group; When the horizontal displacement vectors of the adjacent fill layer monitoring point group and the corresponding monitoring point group in the candidate deformation influence zone are both pointing towards the slope toe and in the same direction during the same observation period, the adjacent fill layer monitoring point group is incorporated into the candidate deformation influence zone and the connection relationship is supplemented; the supplemented connection relationship participates in the determination of the continuous evaluation period from the actual establishment time.

[0008] In conjunction with the first aspect, in one possible implementation, the set of monitoring points for the continuously accelerating deformation is determined in the following manner: During each evaluation period, the two monitoring point groups of the connection relationship are paired according to the monitoring point group identifier, and the connection relationship in which the horizontal displacement vector direction difference does not exceed the direction difference threshold and both monitoring point groups of the two ends undergo accelerated deformation along the slope is retained. Based on the combination of the monitoring point group identifiers at both ends of the connection relationship, the intersection of the connection relationships retained within the continuous evaluation period is obtained; The monitoring point group that is interconnected in the intersection is determined as the monitoring point group set for the continuous accelerated deformation.

[0009] In conjunction with the first aspect, in one possible implementation, the method further includes: Obtain the moisture content of each monitoring point group, and determine the positive moisture content increment as the part of the moisture content difference between adjacent effective sampling times of the same monitoring point group that is greater than zero; The monitoring point group where the positive moisture content increment exceeds the humidification threshold and the monitoring point group of the adjacent fill layer in space are determined as the pre-densification range, and the sampling cycle of the monitoring point group in the pre-densification range is shortened. The horizontal displacement vectors collected within the pre-encrypted range are used for connection determination of the candidate deformation influence zone; for the monitoring point group that has been included in the candidate deformation influence zone, the encrypted sampling state of the candidate deformation influence zone is maintained.

[0010] In conjunction with the first aspect, in one possible implementation, shortening the sampling period of the monitoring point group within the candidate deformation influence zone and collecting the horizontal displacement vector with the monitoring point group identifier and timestamp specifically includes: Send a sampling encryption command containing the monitoring point group identifier, encryption sampling period, and effective time to the data acquisition station corresponding to the candidate deformation influence area; The data acquisition station collects the horizontal coordinates and their timestamps according to the sampling encryption instruction, and retains the last valid horizontal coordinates and their timestamps before encryption; According to the timestamp, the last valid horizontal coordinate before encryption and the horizontal coordinate collected after encryption are connected in chronological order. The difference between adjacent valid horizontal coordinates is used to determine the horizontal displacement vector. The horizontal displacement vector is then associated with the corresponding start and end timestamps and the monitoring point group identifier.

[0011] In conjunction with the first aspect, in one possible implementation, the slope-direction displacement velocity and the slope-direction displacement acceleration are determined in the following manner: Project the horizontal displacement vector onto a horizontal unit vector pointing from the top of the slope to the bottom of the slope to determine the displacement increment along the slope direction; Divide the slope displacement increment by the actual duration of the corresponding observation period to determine the slope displacement velocity, and assign the slope displacement velocity to the midpoint of the observation period. The slope-direction displacement acceleration is determined by dividing the difference in slope-direction displacement velocity between adjacent observation periods by the difference in the corresponding midpoint time.

[0012] In conjunction with the first aspect, in one possible implementation, the method further includes: The vertical settlement of each monitoring point group in the candidate deformation influence area is collected, and the vertical settlement rate is determined according to the difference of vertical settlement at adjacent effective sampling times and the actual time interval. The vertical settlement rate is independently compared with the settlement rate threshold, and a settlement anomaly warning message is generated when the vertical settlement rate exceeds the settlement rate threshold; The settlement anomaly early warning information is sent to the information monitoring platform to execute graded early warning alarms, and the slippage risk level corresponding to the slope disaster early warning information is retained.

[0013] In conjunction with the first aspect, in one possible implementation, the information monitoring platform includes a large-screen display interface, an SMS notification interface, an audible and visual alarm interface, a voice broadcast interface, and an on-site verification feedback interface; the method further includes: displaying the slope disaster early warning information through the large-screen display interface, pushing the slope disaster early warning information through the SMS notification interface, executing an alarm matching the slippage risk level through the audible and visual alarm interface and the voice broadcast interface, receiving the on-site verification results corresponding to the slope disaster early warning information through the on-site verification feedback interface, and storing the on-site verification results in association with the corresponding slope disaster early warning information.

[0014] Secondly, this application provides an information-based construction monitoring and early warning system for high embankment slopes in substations, comprising: The acquisition module is used to acquire the horizontal displacement vectors of each monitoring point group in different filling layers, as well as the corresponding timestamps and spatial coordinates. The processing module is used to connect adjacent filling layer monitoring point groups with horizontal displacement vectors pointing towards the slope toe and having the same direction within the same observation period into candidate deformation influence areas based on the spatial coordinates, and to record the monitoring point group identifiers and connection relationships of the candidate deformation influence areas. The processing module is also used to shorten the sampling cycle of the monitoring point group in the candidate deformation influence area and to collect the horizontal displacement vector with the monitoring point group identifier and timestamp. The processing module is further configured to determine the slope displacement velocity and slope displacement acceleration from the horizontal displacement vector collected after shortening the sampling period according to the actual time interval corresponding to the timestamp, determine the slope acceleration deformation based on the slope displacement velocity and the slope acceleration, and retain the connection relationship that satisfies the direction consistency and both ends of the monitoring point group have slope acceleration deformation according to the monitoring point group identifier, thereby forming a monitoring point group set with continuous acceleration deformation. The execution module is used to determine the slip risk level based on the duration and spatial coverage of the monitoring point set that is continuously accelerating deformation, generate slope disaster early warning information based on the slip risk level, and send it to the information monitoring platform to execute the graded early warning alarm.

[0015] The technical solutions provided by the embodiments disclosed in this application have the following beneficial effects: The information-based construction monitoring and early warning method and system for high embankment slopes in substations provided in this application establishes candidate deformation influence zones by utilizing displacements in adjacent embankment layers that are oriented towards the slope toe and in the same direction during the same time period. This allows the shortening of the sampling period to directly affect spatially related monitoring point groups. The method calculates the slope-direction displacement velocity and acceleration after the shortened sampling period using actual time intervals, and continuously verifies the same connection relationship according to the monitoring point group identifier. This ensures that the duration and spatial coverage correspond to the same batch of monitoring point groups experiencing continuous accelerated deformation, reducing interference from short-term anomalies at different locations on the determination of continuous deformation. Therefore, it eliminates the need to uniformly extend the confirmation time to exclude short-term changes. Based on this, continuous spatial deformation evidence can be generated and graded early warning alarms can be executed based on a targeted shortening of the sampling period, reducing the lag in slope risk response. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exemplary flowchart of an information-based construction monitoring and early warning method for high embankment slopes in substations, as shown in some embodiments of this application. Figure 2 This is an exemplary flowchart illustrating the determination of candidate deformation influence regions according to some embodiments of this application; Figure 3 This is an exemplary flowchart illustrating the implementation of sampling encryption according to some embodiments of this application; Figure 4 This is a structural schematic diagram of an information-based construction monitoring and early warning system for high embankment slopes of substations, as shown in some embodiments of this application. Figure 5 This is a schematic diagram of the structure of a computer device for implementing an information-based construction monitoring and early warning method for high embankment slopes of substations, according to some embodiments of this application. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] refer to Figure 1The figure is an exemplary flowchart of an information-based construction monitoring and early warning method for high embankment slopes in substations, according to some embodiments of this application. This method mainly includes the following steps: In step 101, the horizontal displacement vectors of each monitoring point group in different filling layers, as well as the corresponding timestamps and spatial coordinates, are obtained.

[0020] In practice, unique identifiers are assigned to monitoring point groups for different fill layers according to the slope monitoring plan, and the fill layer number and initial spatial coordinates are registered. Horizontal displacement can be measured using a total station on slope monitoring piles that maintain visibility, or a displacement monitoring device capable of outputting uniform plane coordinates can be used. The fill layer is determined by its layer assignment in the construction record, which is used to distinguish monitoring point groups for different layers. If subsequent filling blocks an existing prism, the observation path is adjusted or monitoring facilities corresponding to that layer are configured first, and new or relocated points are re-established with new identifiers to re-establish the benchmark.

[0021] A monitoring point group comprises monitoring points that collectively represent the same local positional state within the corresponding spatial range specified in the monitoring plan. Before comparing the horizontal displacement direction, the coordinates of each point are assigned to the same plane coordinate system; the direction from the top of the slope to the bottom of the slope is taken as the horizontal projection direction of the slope segment. Spatially adjacent relationships are established for slope segments with different orientations to avoid directly comparing directions across turning slope surfaces.

[0022] In some embodiments, the horizontal displacement vector may be determined in the following manner: Read the horizontal coordinates and data collection timestamps of each monitoring point group in a unified plane coordinate system according to the filling layer and monitoring point group identifiers; Based on the collection timestamp, select the start and end times of the effective horizontal coordinates shared by each monitoring point group, and determine the same observation period based on the start and end times; Subtract the starting point's horizontal coordinate from the ending horizontal coordinate of the same observation period to determine the horizontal displacement vector of each monitoring point group, and associate the horizontal displacement vector with the starting and ending times and corresponding spatial coordinates.

[0023] Because the total station measures each prism sequentially, the original readings at each point may not be obtained strictly simultaneously. The server retains the actual observation time; valid readings with the same time are directly paired; for asynchronous readings, when they are only between consecutive valid measured values ​​and the time interval does not exceed the interpolation span allowed by the monitoring scheme, they are interpolated to a common start and end time according to the time ratio. When there is no valid clamping reading, the coordinates of that point are not extrapolated, and gaps caused by missing measurements are not treated as continuous observations.

[0024] The eastward and northward coordinates of the endpoint of the same observation period are subtracted from the corresponding coordinates of the starting point to form a directional horizontal displacement vector. Spatial coordinates use the reference position registered by the monitoring point group for grid assignment and adjacency selection; time-varying coordinates under the same identifier are used when calculating displacement. Therefore, data before and after resetting the station or resetting the reference for mobile monitoring facilities are not directly subtracted.

[0025] The monitoring plan pre-sets the actual duration of the observation and evaluation periods. Each evaluation period consists of one or more consecutive observation periods. The start and end times of each observation period are retained. If the sampling period is shortened, additional valid observations are added within the original evaluation period; the actual duration used for determining the duration is not shortened simply because more readings are taken.

[0026] In step 102, based on the spatial coordinates, adjacent filling layer monitoring point groups with horizontal displacement vectors pointing towards the slope toe and having the same direction within the same observation period are connected to form candidate deformation influence zones, and the monitoring point group identifiers and connection relationships of the candidate deformation influence zones are recorded.

[0027] In some embodiments, reference Figure 2 As shown, the candidate deformation influence region can be determined using the following steps: In step 1021, monitoring point groups with horizontal displacement amplitudes exceeding the measurement resolution and positive projection along the slope are selected, and adjacent monitoring point groups of spatially adjacent filling layers are determined based on spatial coordinates and filling layer numbers. In step 1022, a connection is established between the monitoring point groups of adjacent fill layers in the space, where the difference in the direction of the horizontal displacement vector within the same observation period does not exceed the direction difference threshold. In step 1023, the candidate deformation influence area is determined by the connected components formed by the connection, and the identification of the monitoring point group and the connection relationship within the area are recorded.

[0028] Spatial adjacency is determined using a pre-registered monitoring grid. Monitoring point groups of adjacent fill layers whose planar projections fall within the same or adjacent grids can participate in connection comparisons. The identifiers at both ends of each connection are stored in a fixed order, ensuring that the same connection has the same identity across different evaluation periods. Connectivity components are recorded separately, and separate monitoring point groups are not grouped into the same area.

[0029] In some embodiments, the method further includes the following processing: Based on the spatial coordinates, determine the adjacent fill layer monitoring point group that is spatially adjacent to the monitoring point group in the candidate deformation influence zone, but has not yet been included in the candidate deformation influence zone; Shorten the sampling period of the adjacent fill layer monitoring point group and collect the horizontal displacement vector of the adjacent fill layer monitoring point group; When the horizontal displacement vectors of the adjacent fill layer monitoring point group and the corresponding monitoring point group in the candidate deformation influence zone are both pointing towards the slope toe and in the same direction during the same observation period, the adjacent fill layer monitoring point group is incorporated into the candidate deformation influence zone and the connection relationship is supplemented; the supplemented connection relationship participates in the determination of the continuous evaluation period from the actual establishment time.

[0030] For the outer edge of the candidate deformation influence zone, a ring of existing monitoring points is determined based on the registered monitoring grid and stratigraphic correspondence, and this ring of monitoring points is used for the same observation period as the monitoring point group within the zone. The sampling cycle of existing monitoring equipment is shortened, and the existence of new monitoring equipment is not temporarily assumed. If no displacement occurs towards the slope toe and in the same direction, this ring of monitoring points is retained as the boundary observation object and is not included in the set of monitoring points for continuously accelerating deformation.

[0031] When the outer edge monitoring point group meets the connection conditions, the monitoring point group and the connection establishment time are written into the candidate deformation influence area. Subsequently, based on the updated outer edge, the existing monitoring point group that needs to be densified in the next round is determined. Each expansion is based solely on the measured or valid interpolated data of the current observation period, without inferring deformation at unobserved locations based on spatial distance.

[0032] New connections lack continuous evidence prior to their establishment; therefore, the duration of a new connection is calculated from its actual establishment time. Existing connections continue to maintain their own time records; newly added monitoring point groups cannot be added to previous evaluation periods to expand the spatial coverage of existing events. This allows for separate measurement of range expansion and continued acceleration within the original region.

[0033] Candidate deformation influence zones are used to determine the spatial objects for intensified sampling and subsequent verification. Adjacency indicates the spatial correspondence between monitoring locations, and consistent direction indicates that the measurable displacement directions are close during the same period; the connection formed by both is not interpreted as a soil pressure transmission path or the measured boundary of the ground surface.

[0034] In step 103, the sampling period of the monitoring point group in the candidate deformation influence area is shortened, and the horizontal displacement vector with the monitoring point group identifier and timestamp is collected.

[0035] In some embodiments, reference Figure 3 As shown, shortening the sampling period of the monitoring point group within the candidate deformation influence zone and collecting the horizontal displacement vector with the monitoring point group identifier and timestamp can be achieved by the following steps: In step 1031, a sampling encryption instruction containing the monitoring point group identifier, encryption sampling period, and effective time is sent to the data acquisition station corresponding to the candidate deformation influence area; In step 1032, the data acquisition station collects the horizontal coordinates and their timestamps according to the sampling encryption instruction, and retains the last valid horizontal coordinates and their timestamps before encryption; In step 1033, according to the timestamp, the last valid horizontal coordinate before encryption and the horizontal coordinate collected after encryption are connected in chronological order, and the difference between adjacent valid horizontal coordinates is used to determine the horizontal displacement vector. The horizontal displacement vector is then associated with the corresponding start and end timestamps and the monitoring point group identifier.

[0036] The encrypted sampling period is predetermined by the monitoring scheme based on the time required for complete equipment measurement, communication capacity, and the minimum resolvable displacement requirement, and is shorter than the conventional sampling period. The server sends the effective time and the list of monitoring point groups to the data acquisition station; the acquisition station records each sample according to its actual execution time. Monitoring point groups that have not been confirmed for execution continue to retain their original sampling status and issue acquisition status prompts; the server does not use the command issuance time to replace the observation time.

[0037] When switching sampling periods, the last valid horizontal coordinate before encryption is retained and connected with the encrypted readings in the actual time sequence. First, the horizontal displacement vectors of each segment within the observation period are added together, then slope projection and slope-direction displacement velocity calculations are performed; as long as the start and end readings and duration are the same, increasing the number of segments does not change the net displacement for that observation period. Segments crossing missing measurements or datum migrations are not included in this accumulation.

[0038] Intensified sampling provides denser raw observations, enabling changes within and at the boundaries of candidate areas to be promptly incorporated into the next evaluation. The duration is determined by the actual timestamp, and spatial coverage by a fixed monitoring grid; neither is replaced by the number of samples. When a single displacement is not yet distinguishable during the intensive sampling period, net displacement can be accumulated over a preset observation period, while direction determination still requires meeting the measurement resolution requirements.

[0039] For monitoring point groups that have not yet formed candidate deformation impact zones, routine monitoring should continue. If a candidate deformation impact zone no longer meets the connection conditions within a consecutive preset release period, and the displacement and settlement do not trigger the independent over-limit conditions in the monitoring plan, the information monitoring platform should resume routine sampling according to the monitoring plan. Missing measurements, communication interruptions, or equipment failures are not considered as release conditions being met; existing alarm status should be maintained and on-site verification should be requested.

[0040] In some embodiments, the method further includes the following processing: Obtain the moisture content of each monitoring point group, and determine the positive moisture content increment as the part of the moisture content difference between adjacent effective sampling times of the same monitoring point group that is greater than zero; The monitoring point group where the positive moisture content increment exceeds the humidification threshold and the monitoring point group of the adjacent fill layer in space are determined as the pre-densification range, and the sampling cycle of the monitoring point group in the pre-densification range is shortened. The horizontal displacement vectors collected within the pre-encrypted range are used for connection determination of the candidate deformation influence zone; for the monitoring point group that has been included in the candidate deformation influence zone, the encrypted sampling state of the candidate deformation influence zone is maintained.

[0041] Moisture content is represented using the same measurement aperture and calibration curve. The current effective moisture content is subtracted from the previous effective moisture content; if the difference is greater than zero, the difference is retained; otherwise, the positive moisture content increment is recorded as zero. The humidification threshold is preset according to the moisture content sensor resolution, fluctuation during stable periods, and allowable sampling intervals. Differences exceeding the allowable sampling interval are not directly used for the same threshold judgment.

[0042] The pre-densification zone consists of monitoring points at the humidification point and adjacent spatially connected fill layers. Its purpose is to obtain horizontal displacement observations in advance. Pre-densification can still be initiated even when the humidification point itself has no measurable displacement. Only when the displacement collected after densification meets the spatial and directional conditions of step 102 is a candidate deformation influence zone established. Therefore, changes in moisture content do not directly change the slip risk level.

[0043] After the increase in moisture content stops, the existing candidate deformation influence zones will continue to be sampled according to their own displacement connections, and the decrease in positive moisture content increment will not be used as the basis for ending the sampling density increase. For monitoring point groups that were prematurely sampled due to humidification but never formed candidate deformation influence zones, regular sampling will be resumed according to the observation time specified in the monitoring plan and the on-site conditions.

[0044] Because there may be a time lag between changes in water content and observable deformation, using humidification conditions for advance data collection and maintaining displacement conditions for continued data collection can preserve deformation observations that occur later after humidification. This process only controls the observation schedule and does not use water content to calculate soil shear strength or slope safety factors.

[0045] In step 104, according to the actual time interval corresponding to the timestamp, the slope displacement velocity and slope displacement acceleration are determined by the horizontal displacement vector collected after shortening the sampling period. Based on the slope displacement velocity and slope displacement acceleration, the slope acceleration deformation is determined. Based on the monitoring point group identifier, the connection relationship that satisfies the direction consistency and both ends of the monitoring point group undergo slope acceleration deformation is retained to form a monitoring point group set with continuous acceleration deformation.

[0046] In some embodiments, the slope-direction displacement velocity and the slope-direction displacement acceleration can be determined in the following manner: Project the horizontal displacement vector onto a horizontal unit vector pointing from the top of the slope to the bottom of the slope to determine the displacement increment along the slope direction; Divide the slope displacement increment by the actual duration of the corresponding observation period to determine the slope displacement velocity, and assign the slope displacement velocity to the midpoint of the observation period. The slope-direction displacement acceleration is determined by dividing the difference in slope-direction displacement velocity between adjacent observation periods by the difference in the corresponding midpoint time.

[0047] Let the observation period be [t0, t1], the horizontal displacement vector be u, and the horizontal unit vector from the top to the bottom of the slope segment be e. Then, the slope-direction displacement increment is the dot product of u and e, and the slope-direction displacement velocity is this increment divided by (t1 - t0), corresponding to the time (t0 + t1) / 2. When the horizontal coordinate is in millimeters and the time is in hours, the unit of slope-direction displacement velocity is millimeters per hour, and the unit of slope-direction displacement acceleration is millimeters per hour. 2 .

[0048] Since adjacent observation periods have different lengths, the slope displacement velocity is calculated separately for each actual duration, and the slope displacement acceleration is then calculated based on the difference between the two midpoint times. For example, to verify the calculation rules, let the three times be 0, 2, and 3 hours, and the cumulative slope displacement be 0, 4, and 7 mm. Then the slope displacement velocities at the beginning and end are 2 and 3 mm / hour, respectively, and the midpoint times are 1 and 2.5 hours, respectively. The corresponding slope displacement acceleration is 2 / 3 mm / hour. 2 This example is an arithmetic illustration and does not represent actual engineering measurement results.

[0049] The criteria for determining accelerated deformation along the slope direction are: the displacement velocity along the slope direction exceeds the positive threshold for displacement velocity along the slope direction specified in the monitoring plan, and the displacement acceleration along the slope direction exceeds the positive threshold for displacement acceleration along the slope direction specified in the monitoring plan. These two thresholds have corresponding dimensions for displacement velocity and displacement acceleration along the slope direction, respectively, and are set according to the design monitoring requirements, measurement resolution, and observation period. Monitoring point groups with negative displacement velocity or non-positive displacement acceleration along the slope direction are not included in this continuous acceleration determination.

[0050] For determining the spatial characteristics of continuous acceleration, first ensure that both ends of the connection use observation periods with the same start and end times. Each evaluation period can contain multiple observation periods; only if all required observation periods within the evaluation period have valid observations and satisfy the acceleration and orientation conditions will the connection be included in the connection set of that evaluation period. Invalid observations are considered insufficient evidence and are not treated as safe states.

[0051] In some embodiments, the set of monitoring points for continuously accelerating deformation can be determined in the following manner: During each evaluation period, the two monitoring point groups of the connection relationship are paired according to the monitoring point group identifier, and the connection relationship in which the horizontal displacement vector direction difference does not exceed the direction difference threshold and both monitoring point groups of the two ends undergo accelerated deformation along the slope is retained. Based on the combination of the monitoring point group identifiers at both ends of the connection relationship, the intersection of the connection relationships retained within the continuous evaluation period is obtained; The monitoring point group that is interconnected in the intersection is determined as the monitoring point group set for the continuous accelerated deformation.

[0052] The connections retained for each evaluation period are represented as sets of monitoring point group identifier pairs. For the current continuous evaluation period, these sets are intersected, and then each connected component of the intersection is extracted; each connected component forms a set of monitoring point groups undergoing continuous accelerated deformation, and separate sets are not merged to calculate the spatial coverage. The number of evaluation periods and the actual total duration are jointly limited by the actual duration of the evaluation periods preset in the monitoring scheme and the duration conditions in the preset risk level mapping table.

[0053] For example, if only the connection between monitoring point groups A and B satisfies the condition during a certain evaluation period, and only the connection between monitoring point groups B and C satisfies the condition during the next evaluation period, although both periods have two outliers, they are not connected and do not constitute evidence of continuous acceleration of the same connection. If A and B consistently satisfy the condition throughout consecutive evaluation periods, then A and B form a corresponding set of monitoring point groups with continuous acceleration deformation; when C is subsequently added, its new connection is timed separately from the actual time when the condition is met.

[0054] The spatial coverage area is calculated using the union of pre-divided monitoring grids corresponding to the monitoring point groups within the set. Multiple monitoring point groups within the same grid are counted only once; adjacent grids can be merged to calculate the coverage area, without crossing grids without corresponding monitoring evidence for convex hull filling. The grid union represents the monitored deformation coverage and is not interpreted as the entire potential sliding body volume.

[0055] The directional difference can be determined by the angle between two horizontal displacement vectors; if the magnitude of either vector does not exceed the measurement resolution, its direction is not output. The duration is the longest continuous effective time period in the current set of monitoring points undergoing continuous accelerated deformation, where all connected points have met the conditions, and is calculated from the start and end times of the time period. Timing restarts after a condition is interrupted; high-level alarms that have already been issued are still processed according to the on-site verification and deactivation rules and are not automatically deactivated due to a restart of timing.

[0056] In step 105, the slip risk level is determined based on the duration and spatial coverage of the set of monitoring points with continuously accelerating deformation. Based on the slip risk level, slope disaster early warning information is generated and sent to the information monitoring platform for graded early warning alarm.

[0057] In some embodiments, the method further includes the following processing: The vertical settlement of each monitoring point group in the candidate deformation influence area is collected, and the vertical settlement rate is determined according to the difference of vertical settlement at adjacent effective sampling times and the actual time interval. The vertical settlement rate is independently compared with the settlement rate threshold, and a settlement anomaly warning message is generated when the vertical settlement rate exceeds the settlement rate threshold; The settlement anomaly early warning information is sent to the information monitoring platform to execute graded early warning alarms, and the slippage risk level corresponding to the slope disaster early warning information is retained.

[0058] Vertical settlement is recorded with downward deviation as the positive value and relative to the same stable elevation benchmark. The difference in settlement between adjacent valid time points, divided by the actual time interval, forms the vertical settlement rate, which is expressed in uniform units such as millimeters per hour and compared with the corresponding threshold. Settlement anomalies generate independent early warnings, without requiring simultaneous horizontal acceleration as a trigger condition. When displayed together, the slip risk level and the alarm level corresponding to the settlement anomaly early warning information are retained, and the higher alarm level is executed. The failure of one alarm to exceed its limit does not reduce the alarm level of another that has already been triggered.

[0059] The preset risk level mapping table uses a monotonic classification based on duration and spatial coverage: Regular monitoring is maintained when no set of monitoring points exhibiting continuously accelerating deformation has formed; a monitoring alarm is triggered when a set is formed and the preset minimum duration is reached; a warning alarm is triggered when the set reaches a longer duration or larger grid coverage; and a high-risk alarm is triggered when the duration and grid coverage conditions corresponding to the highest level are met. Each level's conditions and deactivation conditions are set by the engineering monitoring plan before operation; an increase in duration or coverage does not correspond to a lower level. This classification indicates the monitoring risk; failure to trigger this combination of conditions does not mean the slope has been proven safe.

[0060] Furthermore, if any monitoring point reaches the design-allowed cumulative displacement, single-point displacement rate, or settlement alarm value, the information monitoring platform will execute the existing single-point over-limit alarm without waiting for the formation of cross-layer continuous connections. The earth pressure cell can be used as an auxiliary channel to independently monitor the change in normal total stress. When an anomaly occurs, an earth pressure anomaly alert will be generated and a request for on-site verification will be made. The earth pressure anomaly alert will be issued separately. The slope displacement velocity and slope displacement acceleration are still determined according to the horizontal displacement vector and the actual time interval. The shortening of the sampling period is still initiated according to the displacement direction conditions and moisture content conditions.

[0061] In some embodiments, the information monitoring platform includes a large-screen display interface, an SMS notification interface, an audible and visual alarm interface, a voice broadcast interface, and an on-site verification feedback interface. The method further includes the following processing: displaying the slope disaster early warning information through the large-screen display interface; pushing the slope disaster early warning information through the SMS notification interface; executing an alarm matching the slippage risk level through the audible and visual alarm interface and the voice broadcast interface; and receiving the on-site verification results corresponding to the slope disaster early warning information through the on-site verification feedback interface, and storing the on-site verification results in association with the corresponding slope disaster early warning information. High-risk alarm information includes the risk location, trigger time period, relevant monitoring point groups, and suggestions for suspending construction and evacuating personnel. The information monitoring platform submits an on-site verification request simultaneously with issuing the audible and visual alarm; the on-site verification and handling status are returned via the feedback interface and associated with the corresponding early warning record.

[0062] In another aspect, in some embodiments, this application provides an information-based construction monitoring and early warning system for high embankment slopes in substations, with reference to... Figure 4 The figure is a schematic diagram of the structure of an information-based construction monitoring and early warning system for high embankment slopes in substations, according to some embodiments of this application. The information-based construction monitoring and early warning system 400 for high embankment slopes in substations includes an acquisition module 401, a processing module 402, and an execution module 403, which are described below: The acquisition module 401 is used to acquire the horizontal displacement vectors of each monitoring point group in different filling layers and the corresponding timestamps and spatial coordinates; The input to the acquisition module 401 is the monitoring point group identifier, horizontal coordinates, and actual acquisition timestamp uploaded by the data acquisition station. The acquisition module 401 calls the registered fill layer number and reference spatial coordinates, unifies the time caliber for valid readings and forms a horizontal displacement vector, and submits the monitoring point group identifier, layer, spatial coordinates, observation period, and horizontal displacement vector to the processing module 402. Monitoring point groups lacking valid paired readings are marked as invalid and no alternative displacement value is output.

[0063] Processing module 402 is used to connect adjacent filling layer monitoring point groups with horizontal displacement vectors facing the slope toe and having the same direction within the same observation period into candidate deformation influence areas based on the spatial coordinates, and record the monitoring point group identifiers and connection relationships of the candidate deformation influence areas. The processing module 402 receives the data submitted by the acquisition module 401, filters adjacent monitoring point groups by layer and monitoring grid, compares the slope aspect projection and direction difference during the same observation period, and establishes a connection record with the monitoring point group identifier pair as the key. The processing module 402 saves each connected component as a candidate deformation influence area, provides its monitoring point group list to the sampling control process, and retains the connection establishment time for continuous judgment.

[0064] The processing module 402 is also used to shorten the sampling cycle of the monitoring point group in the candidate deformation influence area and to collect the horizontal displacement vector with the monitoring point group identifier and timestamp. The processing module 402 sends the monitoring point group list, encryption sampling period, and effective time through the acquisition station control interface, and receives the execution status and subsequent coordinate readings from the acquisition station. The readings are processed by the acquisition module 401 to form a horizontal displacement vector with an identifier and actual timestamp, and then returned to the processing module 402; the status of not performing encryption is given as an acquisition anomaly prompt to the execution module 403 and is not counted as a new valid sample.

[0065] The processing module 402 is further configured to determine the slope displacement velocity and slope displacement acceleration from the horizontal displacement vector collected after shortening the sampling period according to the actual time interval corresponding to the timestamp, determine the slope acceleration deformation based on the slope displacement velocity and the slope acceleration, and retain the connection relationship that satisfies the direction consistency and both ends of the monitoring point group have slope acceleration deformation according to the monitoring point group identifier, thereby forming a monitoring point group set with continuous acceleration deformation. Processing module 402 retains the horizontal displacement vector and its start and end timestamps for adjacent observation periods for each monitoring point group. It determines the slope-direction displacement velocity based on the actual duration of each observation period, and then determines the slope-direction displacement acceleration based on the difference between adjacent midpoint times. Subsequently, it filters the qualified connection sets for each evaluation period according to the monitoring point group identifier, takes the intersection of consecutive periods, and extracts the connected components. Processing module 402 submits the sets of monitoring point groups with continuously accelerating deformation, their common continuous start and end times, and the corresponding monitoring grids to execution module 403, without including newly added connections in periods established before their creation.

[0066] The execution module 403 is used to determine the slip risk level based on the duration and spatial coverage of the set of monitoring points with continuous accelerated deformation, generate slope disaster early warning information based on the slip risk level, and send it to the information monitoring platform to execute the graded early warning alarm.

[0067] The execution module 403 receives the set of monitoring points for continuously accelerating deformation, the start and end times, and the monitoring grid. It calculates the duration and grid coverage, and retrieves the risk level from a preset risk level mapping table. The execution module 403 generates an early warning record containing location, time period, monitoring point group, and level, and outputs it through the display and alarm interface of the information monitoring platform. It also receives and saves the on-site verification and handling status associated with the record.

[0068] The foregoing detailed examples of the information-based construction monitoring and early warning method and system for high embankment slopes in substations provided in this application. It is understood that the corresponding device, in order to achieve the above functions, includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0069] In some embodiments, this application also provides a computer device, the computer device including a memory and a processor, the memory for storing a computer program, and the processor for calling and running the computer program from the memory, so that the computer device executes the above-described information-based construction monitoring and early warning method for high embankment slopes in substations.

[0070] In some embodiments, reference Figure 5 This figure is a schematic diagram of the computer equipment used to implement the information-based construction monitoring and early warning method for high embankment slopes in substations, as described in this application. The information-based construction monitoring and early warning method for high embankment slopes in substations described in the above embodiments can... Figure 5 The computer device 500 shown is used to implement this, and the computer device 500 includes at least one processor 501, a memory 502 and at least one communication unit 505. The computer device 500 may be a terminal device, a server or a chip.

[0071] Processor 501 can be a general-purpose processor or a special-purpose processor. For example, processor 501 can be a central processing unit (CPU). The CPU can be used to control computer device 500, execute software programs, and process data from the software programs. Computer device 500 may also include a communication unit 505 for inputting (receiving) and outputting (transmitting) signals.

[0072] For example, computer device 500 may be a chip, communication unit 505 may be the input and / or output circuit of the chip, or communication unit 505 may be the communication interface of the chip, and the chip may be a component of terminal device, network device or other device.

[0073] For example, computer device 500 may be a terminal device or a server, and communication unit 505 may be a transceiver of the terminal device or the server, or communication unit 505 may be a transceiver circuit of the terminal device or the server.

[0074] The computer device 500 may include one or more memories 502, which store programs 504 and slope monitoring data. The processor 501 runs the program 504 and executes instructions 503 to realize the data reading, connection determination, sampling control, time calculation and early warning output in the above method; the communication unit 505 exchanges monitoring data, sampling instructions and early warning information with the data acquisition station and the information monitoring platform.

[0075] The processor 501 and memory 502 can be configured separately or integrated together, for example, integrated on the system-on-chip (SOC) of the terminal device.

[0076] It should be understood that each step of the above method embodiment can be completed by hardware logic circuits or software instructions in the processor 501. The processor 501 can be a CPU, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, such as discrete gate, transistor logic devices, or discrete hardware components.

[0077] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] For example, in some embodiments, this application also provides a computer-readable storage medium storing instructions or code that, when executed on a computer, cause the computer to implement the above-described information-based construction monitoring and early warning method for high embankment slopes in substations.

[0079] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0080] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for information-based construction monitoring and early warning of high embankment slopes in substations, characterized in that, Includes the following steps: Obtain the horizontal displacement vectors of each monitoring point group in different filling layers, along with the corresponding timestamps and spatial coordinates; Based on the spatial coordinates, adjacent fill layer monitoring point groups with horizontal displacement vectors pointing towards the slope toe and having the same direction within the same observation period are connected to form candidate deformation influence zones, and the monitoring point group identifiers and connection relationships of the candidate deformation influence zones are recorded. Shorten the sampling period of the monitoring point group within the candidate deformation influence area, and collect horizontal displacement vectors with the monitoring point group identifier and timestamp; According to the actual time interval corresponding to the timestamp, the slope displacement velocity and slope displacement acceleration are determined by the horizontal displacement vector collected after shortening the sampling period. Based on the slope displacement velocity and slope displacement acceleration, the slope acceleration deformation is determined. Based on the monitoring point group identifier, the connection relationship that satisfies the direction consistency and the slope acceleration deformation occurs at both ends of the monitoring point group within the continuous evaluation period is retained to form a monitoring point group set with continuous acceleration deformation. The slip risk level is determined based on the duration and spatial coverage of the monitoring point set that is continuously accelerating deformation. Based on the slip risk level, slope disaster early warning information is generated and sent to the information monitoring platform for graded early warning alarm.

2. The method as described in claim 1, characterized in that, The horizontal displacement vector is determined in the following manner: Read the horizontal coordinates and data collection timestamps of each monitoring point group in a unified plane coordinate system according to the filling layer and monitoring point group identifiers; Based on the collection timestamp, select the start and end times of the effective horizontal coordinates shared by each monitoring point group, and determine the same observation period based on the start and end times; Subtract the starting point's horizontal coordinate from the ending horizontal coordinate of the same observation period to determine the horizontal displacement vector of each monitoring point group, and associate the horizontal displacement vector with the starting and ending times and corresponding spatial coordinates.

3. The method as described in claim 1, characterized in that, The method further includes: Based on the spatial coordinates, determine the adjacent fill layer monitoring point group that is spatially adjacent to the monitoring point group in the candidate deformation influence zone, but has not yet been included in the candidate deformation influence zone; Shorten the sampling period of the adjacent fill layer monitoring point group and collect the horizontal displacement vector of the adjacent fill layer monitoring point group; When the horizontal displacement vectors of the adjacent fill layer monitoring point group and the corresponding monitoring point group in the candidate deformation influence zone are both pointing towards the slope toe and in the same direction during the same observation period, the adjacent fill layer monitoring point group is incorporated into the candidate deformation influence zone and the connection relationship is supplemented; the supplemented connection relationship participates in the determination of the continuous evaluation period from the actual establishment time.

4. The method as described in claim 1, characterized in that, The set of monitoring points for the continuously accelerating deformation was determined in the following manner: During each evaluation period, the two monitoring point groups of the connection relationship are paired according to the monitoring point group identifier, and the connection relationship in which the horizontal displacement vector direction difference does not exceed the direction difference threshold and both monitoring point groups of the two ends undergo accelerated deformation along the slope is retained. Based on the combination of the monitoring point group identifiers at both ends of the connection relationship, the intersection of the connection relationships retained within the continuous evaluation period is obtained; The monitoring point group that is interconnected in the intersection is determined as the monitoring point group set for the continuous accelerated deformation.

5. The method as described in claim 1, characterized in that, The method further includes: Obtain the moisture content of each monitoring point group, and determine the positive moisture content increment as the part of the moisture content difference between adjacent effective sampling times of the same monitoring point group that is greater than zero; The monitoring point group where the positive moisture content increment exceeds the humidification threshold and the monitoring point group of the adjacent fill layer in space are determined as the pre-densification range, and the sampling cycle of the monitoring point group in the pre-densification range is shortened. The horizontal displacement vectors collected within the pre-encrypted range are used for connection determination of the candidate deformation influence zone; for the monitoring point group that has been included in the candidate deformation influence zone, the encrypted sampling state of the candidate deformation influence zone is maintained.

6. The method as described in claim 1, characterized in that, Shortening the sampling period of the monitoring point group within the candidate deformation influence zone and collecting the horizontal displacement vector with the monitoring point group identifier and timestamp specifically includes: Send a sampling encryption command containing the monitoring point group identifier, encryption sampling period, and effective time to the data acquisition station corresponding to the candidate deformation influence area; The data acquisition station collects the horizontal coordinates and their timestamps according to the sampling encryption instruction, and retains the last valid horizontal coordinates and their timestamps before encryption; According to the timestamp, the last valid horizontal coordinate before encryption and the horizontal coordinate collected after encryption are connected in chronological order. The difference between adjacent valid horizontal coordinates is used to determine the horizontal displacement vector. The horizontal displacement vector is then associated with the corresponding start and end timestamps and the monitoring point group identifier.

7. The method as described in claim 1, characterized in that, The slope-direction displacement velocity and the slope-direction displacement acceleration are determined in the following manner: Project the horizontal displacement vector onto a horizontal unit vector pointing from the top of the slope to the bottom of the slope to determine the displacement increment along the slope direction; Divide the slope displacement increment by the actual duration of the corresponding observation period to determine the slope displacement velocity, and assign the slope displacement velocity to the midpoint of the observation period. The slope-direction displacement acceleration is determined by dividing the difference in slope-direction displacement velocity between adjacent observation periods by the difference in the corresponding midpoint time.

8. The method as described in claim 1, characterized in that, The method further includes: The vertical settlement of each monitoring point group in the candidate deformation influence area is collected, and the vertical settlement rate is determined according to the difference of vertical settlement at adjacent effective sampling times and the actual time interval. The vertical settlement rate is independently compared with the settlement rate threshold, and a settlement anomaly warning message is generated when the vertical settlement rate exceeds the settlement rate threshold; The settlement anomaly early warning information is sent to the information monitoring platform to execute graded early warning alarms, and the slippage risk level corresponding to the slope disaster early warning information is retained.

9. The method as described in claim 1, characterized in that, The information monitoring platform includes a large-screen display interface, an SMS notification interface, an audible and visual alarm interface, a voice broadcast interface, and an on-site verification feedback interface. The method further includes: displaying the slope disaster early warning information through the large-screen display interface; pushing the slope disaster early warning information through the SMS notification interface; executing an alarm matching the slippage risk level through the audible and visual alarm interface and the voice broadcast interface; receiving the on-site verification results corresponding to the slope disaster early warning information through the on-site verification feedback interface; and storing the on-site verification results in association with the corresponding slope disaster early warning information.

10. An information-based construction monitoring and early warning system for high embankment slopes in substations, characterized in that, include: The acquisition module is used to acquire the horizontal displacement vectors of each monitoring point group in different filling layers, as well as the corresponding timestamps and spatial coordinates. The processing module is used to connect adjacent filling layer monitoring point groups with horizontal displacement vectors pointing towards the slope toe and having the same direction within the same observation period into candidate deformation influence areas based on the spatial coordinates, and to record the monitoring point group identifiers and connection relationships of the candidate deformation influence areas. The processing module is also used to shorten the sampling cycle of the monitoring point group in the candidate deformation influence area and to collect the horizontal displacement vector with the monitoring point group identifier and timestamp. The processing module is further configured to determine the slope displacement velocity and slope displacement acceleration from the horizontal displacement vector collected after shortening the sampling period according to the actual time interval corresponding to the timestamp, determine the slope acceleration deformation based on the slope displacement velocity and the slope acceleration, and retain the connection relationship that satisfies the direction consistency and both ends of the monitoring point group have slope acceleration deformation according to the monitoring point group identifier, thereby forming a monitoring point group set with continuous acceleration deformation. The execution module is used to determine the slip risk level based on the duration and spatial coverage of the monitoring point set that is continuously accelerating deformation, generate slope disaster early warning information based on the slip risk level, and send it to the information monitoring platform to execute the graded early warning alarm.

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