Reservoir area slope stability monitoring method and device and storage medium

Abstract

The invention relates to the technical field of intelligent hydropower, in particular to a reservoir area slope stability monitoring method, device and equipment and a computer storage medium. According to the reservoir area slope stability monitoring method, slope data are efficiently integrated and utilized, a slope rock-soil model is constructed, automation and multi-factor comprehensive evaluation of slope stability analysis are achieved, the data application efficiency and analysis efficiency are remarkably improved, the manpower and material resource cost of slope management is reduced, and the method is suitable for popularization and application. The safety guarantee capability of the slope is enhanced, a scientific and accurate decision basis is provided for managers, the scientificity and safety of slope management are effectively improved, and the stability and safety of the dam and the surrounding environment are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent hydropower, and in particular to a method, device, equipment and computer storage medium for monitoring the stability of slopes in a reservoir area. Background Art

[0002] Most of the dam sites of hydropower stations in China are distributed in the mountainous areas of the southwest. These areas are characterized by frequent tectonic activities, large topographic differences, fragmented rock and soil structures, and complex hydrogeological conditions. Affected by the complex hydrogeological conditions, there are often a large number of loose accumulation slopes near the dams. Taking the Qiaoji Hydropower Station in the Baoxing River Basin of Sichuan as an example, there were 35 landslide accumulation bodies with obvious deformation during the initial stage of reservoir impoundment. Since hydropower stations are important power generation and water conservancy buildings with a high safety level, multiple surveys and monitoring work on the slopes in the reservoir area, especially the slopes near the dam, need to be carried out from the pre-project preparation to the operation of the hydropower station. The data obtained are often shelved after the completion of this work, with low material utilization rate and being difficult to be used for guiding subsequent slope monitoring and treatment work. At the same time, most of the current reservoir area slope observation systems only display the displacement data of key points, and it is difficult to comprehensively evaluate the overall situation and stability of the slope through the data of a small number of points.

[0003] At present, the stability monitoring and analysis of the slopes near the dams of hydropower stations mainly have the following problems:

[0004] (1) The utilization rate of data is low, and the existing data are difficult to be fully applied to slope analysis and monitoring.

[0005] (2) The slope analysis efficiency is low. When slope analysis is required, it is necessary to collect data one by one again, with low work efficiency and time-consuming and laborious.

[0006] (3) The slope analysis is difficult. On the premise of insufficient data application, the slope analysis is difficult, and some data collection and survey work needs to be carried out again, resulting in waste of human and material resources. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low efficiency, high difficulty and high cost in the stability monitoring and analysis of the slopes near the dams of hydropower stations in the prior art.

[0008] To solve the above technical problems, the present invention provides a method for monitoring the stability of slopes in a reservoir area, including:

[0009] Obtaining the topographic data and geological information of the slopes in the reservoir area;

[0010] Inputting the topographic data into digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological information into GIS software to generate a slope rock and soil model;

[0011] Update the slope geotechnical model in real time according to the slope monitoring data and inspection data, and set dynamic load simulation for the slope geotechnical model;

[0012] Generate multiple cross-sections based on the geometric digital twin model, apply the measured load data to them, and calculate the slope stability by the limit equilibrium method and the finite element method to obtain the slope stability coefficient;

[0013] Output the comprehensive discrimination result of slope stability according to the cumulative measured deformation, measured deformation rate, inspection abnormal situation data and the slope stability coefficient.

[0014] Preferably, the obtaining of the topographic data and geological information of the reservoir area slope includes:

[0015] Obtain the digital topographic map and digital elevation model generated by using UAV aerial photography and satellite remote sensing technology, and obtain the topographic data generated by scanning the terrain with a ground three-dimensional laser scanner;

[0016] Obtain the geological report, borehole data and rock and soil layer distribution of the reservoir area. The geological report includes geological structure, rock layer strike and lithological characteristics, and the borehole data includes the layering of rock and soil layers at different depths and the geotechnical physical and mechanical parameters.

[0017] Preferably, the inputting the topographic data into the digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological information into the GIS software to generate a slope geotechnical model includes:

[0018] Preprocess the topographic data and then import it into the digital twin modeling software for the construction of a geometric model to generate a three-dimensional topographic model;

[0019] According to the geological information, divide the rock and soil layers of the three-dimensional topographic model, assign corresponding geotechnical parameters in the three-dimensional topographic model, and combine the geotechnical parameters with the spatial positions to construct a three-dimensional geological structure model;

[0020] Combine the three-dimensional topographic model and the three-dimensional geological structure model to obtain a slope geotechnical model.

[0021] Preferably, the real-time updating of the slope geotechnical model according to the slope monitoring data and inspection data includes:

[0022] When the slope deforms or displaces, update the slope geotechnical model in real time according to the real-time monitoring data of the slope;

[0023] When reinforcement measures are taken for the slope, update the slope geotechnical model according to the inspection data of the slope.

[0024] Preferably, the dynamic load simulation for the slope rock and soil model includes:

[0025] According to the hydrological data of the hydropower station, obtain the change of the reservoir water level, and simulate the water pressure of the reservoir water on the slope in the slope rock and soil model;

[0026] According to the rainfall amount, rainfall intensity and the permeability coefficient of the rock and soil, calculate the rainfall infiltration depth and speed, and simulate the change of rock and soil saturation and pore water pressure caused by rainfall infiltration in the slope rock and soil model;

[0027] Simulate and apply the corresponding load in the slope rock and soil model according to the weight, volume and position of the stacked objects;

[0028] Simulate and apply the corresponding load in the slope rock and soil model according to the number of people, activity range and activity intensity.

[0029] Preferably, the output of the comprehensive discrimination result of slope stability according to the cumulative measured deformation amount, measured deformation rate, inspection abnormal situation data and the slope stability coefficient includes:

[0030] Obtain the cumulative displacement data of the measuring points within a preset time period. When the cumulative displacement amount is greater than the preset threshold, record it as abnormal;

[0031] Obtain the increment of the slope displacement rate within a preset time period. When the increment is greater than the preset magnification factor, record it as abnormal;

[0032] Record the road surface sediment or building cracking situation recorded during the inspection process as abnormal;

[0033] Conduct a comprehensive analysis of the cumulative measured deformation amount, measured deformation rate, inspection abnormal situation data and the slope stability coefficient, and output the comprehensive discrimination result of slope stability.

[0034] Preferably, the comprehensive analysis of the cumulative measured deformation amount, measured deformation rate, inspection abnormal situation data and the slope stability coefficient, and the output of the comprehensive discrimination result of slope stability includes:

[0035] When any one of the cumulative measured deformation amount, measured deformation rate, inspection abnormal situation data and the slope stability coefficient is abnormal, it is determined as a risk slope;

[0036] Trigger an alarm command, and prompt the preliminary analysis result and corresponding construction measures.

[0037] The present invention also provides a slope stability monitoring device for the reservoir area, including:

[0038] A data acquisition module for acquiring the topographic data and geological information of the slope in the reservoir area;

[0039] A model construction module for inputting the terrain data into digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological data into GIS software to generate a slope rock and soil model;

[0040] A model dynamic update module for real-time updating the slope rock and soil model according to slope monitoring data and inspection data, and setting dynamic load simulation for the slope rock and soil model;

[0041] A stability coefficient determination module for generating multiple cross-sections based on the geometric digital twin model, applying measured load data thereto, and performing slope stability calculation by the limit equilibrium method and the finite element method to obtain the slope stability coefficient;

[0042] A stability comprehensive analysis module for outputting a comprehensive discrimination result of slope stability according to the cumulative measured deformation amount, the measured deformation rate, the inspection abnormal condition data and the slope stability coefficient.

[0043] The present invention also provides a slope stability monitoring device for a reservoir area, including:

[0044] A memory for storing a computer program;

[0045] A processor for implementing the steps of the above-mentioned slope stability monitoring method for a reservoir area when executing the computer program.

[0046] The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned slope stability monitoring method for a reservoir area are implemented.

[0047] The above technical solution of the present invention has the following advantages compared with the prior art:

[0048] The slope stability monitoring method for a reservoir area of the present invention constructs a slope rock and soil model by efficiently integrating and utilizing slope data, and realizes the automation and multi-factor comprehensive evaluation of slope stability analysis, significantly improving the data application efficiency and analysis efficiency, reducing the human and material costs of slope management, enhancing the safety guarantee ability of the slope, providing a scientific and accurate decision-making basis for managers, effectively improving the scientificity and safety of slope management, and ensuring the stability and safety of the dam and the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments of the present invention in conjunction with the drawings, wherein:

[0050] Figure 1It is the implementation flowchart of a method for monitoring the stability of the slopes in the reservoir area provided by the present invention;

[0051] Figure 2 It is a schematic diagram of the slope model in the reservoir area. Specific implementation manners

[0052] The core of the present invention is to provide a method, device, equipment and computer storage medium for monitoring the stability of the slopes in the reservoir area, which effectively improves the data application efficiency and analysis efficiency and reduces the human and material costs of slope management.

[0053] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0054] Please refer to Figure 1 , Figure 1 , which is the implementation flowchart of a method for monitoring the stability of the slopes in the reservoir area provided by the present invention; the specific operation steps are as follows:

[0055] S101: Obtain the topographic data and geological information of the slopes in the reservoir area;

[0056] S102: Input the topographic data into digital twin modeling software to generate a geometric digital twin model, and input the geometric digital twin model and the geological information into GIS software to generate a slope geotechnical model;

[0057] S103: Update the slope geotechnical model in real time according to the slope monitoring data and inspection data, and set dynamic load simulation for the slope geotechnical model;

[0058] S104: Generate multiple cross-sections according to the geometric digital twin model, apply the measured load data to them, and perform slope stability calculations by the limit equilibrium method and the finite element method to obtain the slope stability coefficient;

[0059] S105: Output the comprehensive discrimination result of slope stability according to the cumulative measured deformation, measured deformation rate, inspection abnormal condition data and the slope stability coefficient.

[0060] Based on the above embodiments, this embodiment details step S101:

[0061] Obtain the digital topographic map and digital elevation model generated by using the UAV aerial photography and satellite remote sensing technologies, and obtain the topographic data generated by scanning the terrain with a ground 3D laser scanner. Specifically:

[0062] Use technologies such as drone aerial photography and satellite remote sensing to obtain high-precision topographic maps, which contain rich elevation information, and form digital topographic maps (DTM) or digital elevation models (DEM). For areas with complex terrain or insufficient accuracy of existing data, use ground three-dimensional laser scanners to conduct topographic surveys and obtain more detailed topographic data.

[0063] Obtain the geological report, borehole data, and distribution of rock and soil layers in the reservoir area. The geological report includes geological structures, rock layer strikes, and lithological characteristics. The borehole data includes the stratification of rock and soil layers at different depths and geotechnical physical and mechanical parameters. Specifically:

[0064] Extensively collect geological reports, borehole data, distribution of rock and soil layers, etc. in the relevant area. Geological reports can provide information such as geological structures, rock layer strikes, and lithological characteristics in the slope area; borehole data contains detailed data such as the stratification of rock and soil layers at different depths and geotechnical physical and mechanical parameters.

[0065] The completed slope model of the reservoir area is as Figure 2 shown.

[0066] Based on the above embodiments, this embodiment elaborates on step S102 in detail:

[0067] After preprocessing the terrain data, import it into digital twin modeling software to construct a geometric model and generate a three-dimensional terrain model. Specifically:

[0068] Import the obtained terrain data into professional digital twin modeling software, such as Revit, Bentley, etc., to construct a geometric model. The software will automatically generate the three-dimensional geometric shape of the slope according to the elevation information, forming a basic geometric digital twin model.

[0069] In one embodiment, before establishing the geometric model, it is necessary to preprocess and optimize the terrain data. GIS can perform denoising, filtering, interpolation, etc. on the terrain data to improve the quality and accuracy of the data. For example, for the noise points in the topographic map, the filtering tool of GIS can be used for smoothing; for the vacant areas in the terrain data, methods such as spline interpolation and inverse distance weighted interpolation can be used to fill the data to ensure the integrity of the geometric model.

[0070] In one embodiment, when obtaining terrain data, various technical means may be used, such as topographic maps, remote sensing images, lidar, etc. GIS can fuse these terrain data from different sources. For example, combine remote sensing images with topographic maps and use the texture information of the images to refine the correction of the object boundaries in the topographic map; combine the high-precision DEM obtained by lidar with the vector data of the topographic map to generate a more accurate three-dimensional terrain model.

[0071] According to the geological data, the rock and soil layers of the three-dimensional terrain model are divided, corresponding rock and soil parameters are assigned in the three-dimensional terrain model, and the rock and soil parameters are combined with the spatial positions to construct a three-dimensional geological structure model. Specifically:

[0072] In the GIS software, according to the collected geological data, the rock and soil layers of the slope model are divided. Different rock and soil layers are distinguished according to their lithological characteristics and physical and mechanical parameters, and corresponding parameters such as density, internal friction angle, cohesion, etc. are assigned in the model. For the rock and soil stratum data between boreholes, methods such as Kriging interpolation and inverse distance weighted interpolation are used for automatic interpolation to ensure the continuity and accuracy of the distribution of rock and soil layers.

[0073] In one embodiment, GIS can utilize information such as the strike, dip angle, and faults in the geological data to construct a three-dimensional geological structure model of the slope. By drawing the rock layer interface, fault line, etc. in GIS, the geological skeleton of the slope is formed, providing a basis for the establishment of the rock and soil model. For example, according to the rock layer stratification information in the borehole data, a three-dimensional surface of the rock layer interface is generated in GIS to simulate the geological structure of the slope.

[0074] In one embodiment, in the rock and soil model, rock and soil parameters (such as density, internal friction angle, cohesion, etc.) often have spatial distribution characteristics. GIS can combine these parameters with the spatial positions to generate a spatial distribution map of the parameters. For example, according to the test results of rock and soil parameters in the borehole data, using the interpolation function of GIS, a spatial distribution map of rock and soil parameters in the slope area is generated, providing detailed parameter input for stability analysis.

[0075] Combining the three-dimensional terrain model and the three-dimensional geological structure model, a slope rock and soil model is obtained. Specifically:

[0076] The rock and soil data and geometric data are integrated to generate a complete slope rock and soil model. The GIS software can combine the rock and soil layer information with the geometric model to form a comprehensive model containing the terrain and rock and soil attributes, providing a basis for subsequent slope stability analysis.

[0077] Based on the above embodiments, this embodiment details step S103:

[0078] When the slope deforms or displaces, the slope rock and soil model is updated in real time according to the real-time monitoring data of the slope. Specifically:

[0079] Import the real-time data of slope monitoring equipment (such as displacement monitors, crack meters, inclinometers, etc.) into the system. When the monitoring data shows that the slope is deformed or displaced, update the model in combination with the inspection data. For example, if settlement occurs at the top of the slope, the elevation data at the corresponding position in the model needs to be adjusted.

[0080] After taking reinforcement measures for the slope, update the slope rock and soil model according to the inspection data of the slope. Specifically:

[0081] After taking slope reinforcement measures such as unloading and slope cutting, modify the geometric model in a timely manner. The unloading measure will cause a reduction in the upper load of the slope, and it is necessary to adjust the distribution and thickness of the upper rock and soil layers in the model; slope cutting changes the slope gradient, and it is necessary to correct the slope surface shape in the model to reflect the actual slope form.

[0082] According to the hydrological data of the hydropower station, obtain the change of the reservoir water level, and simulate the water pressure of the reservoir water on the slope in the slope rock and soil model. Among them, the hydrostatic pressure is calculated according to the water level height, and the seepage pressure is simulated according to the hydrogeological conditions and the permeability parameters of the rock and soil.

[0083] Calculate the rainfall infiltration depth and velocity according to the rainfall amount, rainfall intensity and the permeability coefficient of the rock and soil, and simulate the change of soil saturation and pore water pressure caused by rainfall infiltration in the slope rock and soil model;

[0084] Simulate and apply the corresponding load in the slope rock and soil model according to the weight, volume and position of the stacked objects;

[0085] Simulate and apply the corresponding load in the slope rock and soil model according to the number of people, activity range and activity intensity.

[0086] Based on the above embodiments, this embodiment details step S104:

[0087] Use the GIS system to generate multiple cross-sections of the geometric model of the slope. The cross-sections should be perpendicular to the trend of the slope and can reflect the typical characteristics of the slope. From the generated cross-sections, select 3 representative two-dimensional slope profiles, and these profiles should cover different parts and combinations of rock and soil layers of the slope.

[0088] Apply the measured reservoir water and rainfall loads on the selected cross-sections. Use the limit equilibrium method or the finite element method for stability calculation. The limit equilibrium method calculates the anti-sliding force and sliding force of the slope to obtain the stability coefficient; the finite element method analyzes the stability by simulating the stress and strain distribution of the slope. The calculation results are used to evaluate the stability of the slope under the current load conditions.

[0089] Based on the above embodiments, this embodiment details step S105:

[0090] Obtain the cumulative displacement data of the measuring point within the preset time period. When the cumulative displacement is greater than the preset threshold, it is recorded as an anomaly; in a specific application, analyze the deformation condition of the slope according to the cumulative displacement data of the measuring point recorded in the database. When the cumulative displacement is greater than 15 - 30 cm / year, it indicates that the slope deformation is large and there may be stability problems.

[0091] Obtain the increment of the slope displacement rate within the preset time period. When the increment is greater than the preset multiple, it is recorded as an anomaly; in a specific application, calculate the increment of the displacement rate within one year. When the increment is greater than 2 times, it shows that the slope deformation rate accelerates and the stability risk increases.

[0092] Record the road surface sedimentation or building cracking conditions recorded during the inspection process as anomalies; in a specific application, during the inspection process, if abnormal phenomena such as road surface sedimentation and building cracking are found, these are often precursors of slope instability and need to be taken seriously.

[0093] Comprehensively analyze the cumulative measured deformation amount, measured deformation rate, inspection anomaly situation data, and the slope stability coefficient, and output the comprehensive discrimination result of slope stability. In a specific application, comprehensively analyze the cumulative measured deformation amount, displacement rate, inspection anomaly situation, and the result of the slope stability rapid analysis model. When one of the above four aspects shows an anomaly, it is determined as a risk slope. The system will automatically send an alarm message to the dam management platform and prompt the possible problems in the preliminary analysis, such as landslides, collapses, etc., for the dam reservoir management personnel to take corresponding measures in a timely manner for handling.

[0094] In one embodiment, GIS can construct a comprehensive slope stability evaluation model including multiple factors. This model comprehensively considers multiple factors such as the cumulative measured deformation amount, displacement rate, inspection anomaly situation, and stability analysis result, and quantitatively evaluates the slope stability through weight assignment and comprehensive scoring. For example, set corresponding weight coefficients for each factor and calculate the comprehensive stability score of the slope according to the actual values of each factor.

[0095] In one embodiment, according to the comprehensive evaluation result, GIS can divide the risk level of the slope, such as low risk, medium risk, high risk, etc. Different risk levels correspond to different management measures and decision-making suggestions. For example, for low-risk slopes, conventional monitoring can be maintained; for medium-risk slopes, the monitoring frequency and inspection intensity need to be strengthened; for high-risk slopes, reinforcement measures need to be taken immediately or relevant personnel need to be evacuated. GIS provides decision-making support for management personnel and helps to formulate a scientific and reasonable slope management plan.

[0096] An embodiment of the present invention also provides a monitoring device for the slope stability of a reservoir area; the specific device may include:

[0097] A data acquisition module, configured to acquire topographic data and geological information of the slope of the reservoir area;

[0098] A model construction module, configured to input the topographic data into digital twin modeling software to generate a geometric digital twin model, and input the geometric digital twin model and the geological information into GIS software to generate a slope geotechnical model;

[0099] A model dynamic update module, configured to update the slope geotechnical model in real time according to slope monitoring data and inspection data, and set dynamic load simulation for the slope geotechnical model;

[0100] A stability coefficient determination module, configured to generate a plurality of cross-sections according to the geometric digital twin model, apply measured load data thereto, and perform slope stability calculation by the limit equilibrium method and the finite element method to obtain a slope stability coefficient;

[0101] A stability comprehensive analysis module, configured to output a comprehensive discrimination result of slope stability according to the cumulative measured deformation amount, measured deformation rate, inspection abnormal situation data, and the slope stability coefficient.

[0102] The monitoring device for the slope stability of the reservoir area in this embodiment is used to implement the foregoing method for monitoring the slope stability of the reservoir area. Therefore, the specific implementation manners in the monitoring device for the slope stability of the reservoir area can be seen in the embodiment part of the foregoing method for monitoring the slope stability of the reservoir area. For example, the data acquisition module, the model construction module, the model dynamic update module, the stability coefficient determination module, and the stability comprehensive analysis module are respectively used to implement steps S101, S102, S103, S104, and S105 in the foregoing method for monitoring the slope stability of the reservoir area. Therefore, the specific implementation manners can refer to the descriptions of the corresponding various part embodiments and will not be elaborated herein.

[0103] A specific embodiment of the present invention also provides a monitoring device for the slope stability of a reservoir area, including: a memory, configured to store a computer program; a processor, configured to implement the steps of the foregoing method for monitoring the slope stability of the reservoir area when executing the computer program.

[0104] A specific embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the foregoing method for monitoring the slope stability of the reservoir area are implemented.

[0105] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0106] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0107] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0109] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A method for monitoring slope stability in a reservoir area, characterized in that: include: Obtain topographic data and geological information of the reservoir area slope; Inputting the terrain data into the digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological data into the GIS software to generate a slope geotechnical model; The slope geotechnical model is updated in real time according to the slope monitoring data and inspection information, and a dynamic load simulation is set for the slope geotechnical model; Generate multiple cross sections according to the geometric digital twin model, apply measured load data to them, and calculate the slope stability by limit equilibrium method and finite element method to obtain the slope stability coefficient; According to the accumulated measured deformation, the measured deformation rate, the inspection abnormal situation data and the slope stability coefficient, the comprehensive judgment result of the slope stability is output.

2. The reservoir slope stability monitoring method according to claim 1 is characterized in that: The topographic data and geological information of the reservoir area slope are obtained as follows: Obtain digital terrain maps and digital elevation models generated using drone aerial photography and satellite remote sensing technology, and obtaining terrain data generated by scanning the terrain with a ground-based three-dimensional laser scanner; Obtain geological reports, drilling data and rock and soil layer distribution of the reservoir area. The geological report includes geological structure, rock layer trend and lithological characteristics, and the drilling data includes rock and soil layer stratification at different depths and rock and soil physical and mechanical parameters.

3. The reservoir slope stability monitoring method according to claim 1 is characterized in that: The step of inputting the terrain data into the digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological data into the GIS software to generate a slope geotechnical model comprises: The terrain data is pre-processed and then imported into the digital twin modeling software to construct a geometric model to generate a three-dimensional terrain model; According to the geological data, the three-dimensional terrain model is divided into rock and soil layers, corresponding rock and soil parameters are assigned to the three-dimensional terrain model, and the rock and soil parameters are combined with the spatial position to construct a three-dimensional geological structure model; The three-dimensional terrain model and the three-dimensional geological structure model are combined to obtain a slope rock and soil model.

4. The method for monitoring slope stability in a reservoir area according to claim 1, characterized in that: The real-time updating of the slope geotechnical model according to the slope monitoring data and inspection information includes: When the slope is deformed or displaced, the slope geotechnical model is updated in real time according to the real-time monitoring data of the slope; After reinforcement measures are taken for the slope, the geotechnical model of the slope is updated according to the inspection data of the slope.

5. The method for monitoring slope stability in a reservoir area according to claim 1, characterized in that: The setting of dynamic load simulation for the slope geotechnical model includes: According to the water situation monitoring data of the hydropower station, the change of the reservoir water level is obtained, and the water pressure effect of the reservoir water on the slope is simulated in the slope geotechnical model; According to the rainfall amount, rainfall intensity and rock and soil permeability coefficient, the rainfall infiltration depth and speed are calculated. and simulating changes in soil saturation and pore water pressure caused by rainfall infiltration in the slope soil model; Simulating and applying corresponding loads in the slope geotechnical model according to the weight, volume and location of the stockpiled objects; The corresponding loads are simulated and applied in the slope geotechnical model according to the number of personnel, activity scope and activity intensity.

6. The method for monitoring slope stability in a reservoir area according to claim 1, characterized in that: The output of the comprehensive judgment result of slope stability according to the accumulated measured deformation, measured deformation rate, inspection abnormality data and the slope stability coefficient includes: Obtain the cumulative displacement data of the measuring point within the preset time period. When the cumulative displacement is greater than the preset threshold, it is recorded as an abnormality. Obtain the increment of the slope displacement rate within a preset time period. When the increment is greater than the preset ratio, it is recorded as an abnormality. Record road surface deposits or building cracks recorded during the inspection as abnormalities; The accumulated measured deformation, measured deformation rate, inspection abnormality data and the slope stability coefficient are comprehensively analyzed to output a comprehensive judgment result of the slope stability.

7. The method for monitoring slope stability in a reservoir area according to claim 6, characterized in that: The cumulative measured deformation, measured deformation rate, inspection abnormality data and the slope stability coefficient are comprehensively analyzed to output the comprehensive slope stability judgment result, including: When any of the accumulated measured deformation, measured deformation rate, inspection abnormality data and the slope stability coefficient is abnormal, it is determined to be a risky slope; Trigger the alarm command and prompt the preliminary analysis results and corresponding construction measures.

8. A reservoir slope stability monitoring device, characterized in that: include: Data acquisition module, used to obtain topographic data and geological information of the slope of the reservoir area; A model building module, for inputting the terrain data into the digital twin modeling software to generate a geometric digital twin model, and inputting the geometric digital twin model and the geological data into the GIS software to generate a slope geotechnical model; A model dynamic update module, used to update the slope geotechnical model in real time according to the slope monitoring data and inspection information, and to set dynamic load simulation for the slope geotechnical model; A stability coefficient determination module is used to generate multiple cross sections according to the geometric digital twin model, apply measured load data to them, and calculate the slope stability by limit equilibrium method and finite element method to obtain the slope stability coefficient; The comprehensive stability analysis module is used to output a comprehensive judgment result of slope stability based on the accumulated measured deformation, the measured deformation rate, the inspection abnormal situation data and the slope stability coefficient.

9. A reservoir slope stability monitoring device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of a reservoir area slope stability monitoring method as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of a reservoir area slope stability monitoring method as described in any one of claims 1 to 7 are implemented.

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