Landslide slippage trend prediction method and device, storage medium and electronic equipment

Abstract

The invention relates to a landslide slippage trend prediction method and device, a storage medium and electronic equipment, and relates to the technical field of opencast coal mine landslide prevention and control, and the method comprises the steps: firstly, determining a potential landslide region through the exploration and monitoring of a working side slope of an opencast coal mine; analyzing the stability state of the landslide according to the engineering geological conditions of the landslide area; and then predicting the slip trend of the landslide based on the stability state of the landslide and the influence of engineering disturbance on the landslide. According to the technical scheme, on the basis of investigation and monitoring of the open-pit coal mine working side slope, the engineering disturbance condition is comprehensively considered on the basis of the stability state of the landslide, the slippage trend of the landslide can be accurately predicted, the open-pit coal mine working side slope can be accurately monitored, prevented and controlled, the stability of the side slope is improved, and the stability of the landslide is improved. The risk of landslide is reduced, and safe production of the open-pit coal mine is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of open-pit coal mine landslide prevention and control, and specifically to a method, device, storage medium, and electronic device for predicting a landslide sliding trend. Background Art

[0002] The slope of an open-pit coal mine refers to the overall composition of all step slopes, flat plates (or platforms) and inclined pit lines around the mine, and the working slope refers to the slope or part of it that is being mined and is composed of working steps. The stability of the working slope of an open-pit coal mine will affect the safe production of the coal mine, and even directly affect the economic benefits, resource benefits, environmental benefits and social benefits of the coal mining enterprise.

[0003] At present, through the discussion and research on the instability mechanism of the working slope of open-pit coal mines, the stability of existing landslides can be analyzed and predicted. However, according to the existing technology, it is impossible to accurately predict the sliding trend of the landslide, and thus implement more effective monitoring and prevention measures. Summary of the invention

[0004] In view of this, the present application provides a method, device, storage medium and electronic device for predicting the sliding trend of a landslide, the main purpose of which is to improve the technical problem that the current existing technology cannot accurately predict the sliding trend of a landslide, and thus achieve more effective monitoring and prevention measures.

[0005] In a first aspect, the present application provides a method for predicting a landslide sliding trend, comprising:

[0006] Identify potential landslide areas through investigation and monitoring of open-pit coal mine working slopes;

[0007] Analyze the stability of the landslide according to the engineering geological conditions of the landslide area;

[0008] Based on the stability state of the landslide and the impact of the engineering disturbance on the landslide, the sliding trend of the landslide is predicted.

[0009] Optionally, the potential landslide area is determined by surveying and monitoring the working slope of the open-pit coal mine, including:

[0010] Determine the sliding surface position of the landslide according to the engineering geological survey results and deep displacement monitoring data of the working slope of the open-pit coal mine;

[0011] By monitoring the deformation of the sliding surface, the potential landslide area in the working slope of the open-pit coal mine is analyzed and determined.

[0012] Optionally, analyzing the stability state of the landslide according to the engineering geological conditions of the landslide area includes:

[0013] The strength parameters affecting the stability of the landslide are obtained by analyzing the engineering geological model, wherein the engineering geological model is constructed based on the surface topography within the boundary of the open-pit coal mine;

[0014] Based on the limit equilibrium theory, the stability of the landslide area is verified to obtain the stability coefficient of the landslide under different strength parameters;

[0015] By analyzing the sensitivity between the strength parameters and the stability coefficients corresponding to the strength parameters, the value range of the shear strength index of the weak layer of cement rock immersed in the landslide is determined;

[0016] The stability state of the landslide is determined according to the value range of the shear strength index.

[0017] Optionally, the predicting the sliding trend of the landslide based on the stability state of the landslide and the influence of the engineering disturbance on the landslide includes:

[0018] According to the creep characteristics of the structural surface of the weak layer of mud rock in the landslide, the deformation dynamics of the landslide and the time of the arrival of the sliding acceleration stage are predicted, and the subsequent sliding trend of the landslide is determined in combination with the influence range of the engineering disturbance.

[0019] Optionally, the determining of the subsequent sliding trend of the landslide in combination with the influence range of the engineering disturbance includes:

[0020] According to the propagation law of blasting stress wave and the influence of blasting charge on the landslide, the subsequent sliding trend of the landslide is analyzed.

[0021] Optionally, the analyzing the subsequent sliding trend of the landslide includes:

[0022] Based on the particle flow algorithm, the subsequent sliding process of the landslide is simulated and analyzed;

[0023] According to the results of the simulation analysis, the sliding trend of the landslide is predicted.

[0024] Optionally, after predicting the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide, the method further includes:

[0025] If the sliding trend of the landslide is abnormal, the mining production parameters, working gang design parameters and blasting parameters are optimized, and the potential landslide area is redefined;

[0026] Determine the safe production area based on the re-demarcated potential landslide area.

[0027] In a second aspect, the present application provides a device for predicting a landslide sliding trend, comprising:

[0028] A determination module is configured to determine potential landslide areas by surveying and monitoring the working slope of an open-pit coal mine;

[0029] An analysis module configured to analyze the stability state of the landslide according to the engineering geological conditions of the landslide area;

[0030] The prediction module is configured to predict the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide.

[0031] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method described in the first aspect is implemented.

[0032] In a fourth aspect, the present application provides an electronic device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0033] By means of the above technical scheme, the present application provides a method, device, storage medium and electronic device for predicting the sliding trend of a landslide. Specifically, firstly, the potential landslide area is determined by surveying and monitoring the working slope of an open-pit coal mine; then, the stability state of the landslide is analyzed according to the engineering geological conditions of the landslide area; then, based on the stability state of the landslide and the impact of the engineering disturbance on the landslide, the sliding trend of the landslide is predicted. Compared with the current prior art, by applying the technical scheme of the present application, based on the survey and monitoring of the working slope of an open-pit coal mine, the engineering disturbance conditions are comprehensively considered on the basis of the stability state of the landslide, and the sliding trend of the landslide can be accurately predicted, so as to accurately monitor and control the working slope of the open-pit coal mine, thereby improving the stability of the slope, reducing the risk of landslide, and ensuring the safe production of the open-pit coal mine.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 A schematic diagram showing a flow chart of a method for predicting a landslide sliding trend provided in an embodiment of the present application is shown;

[0038] Figure 2 A schematic flow chart of another method for predicting landslide sliding trend provided in an embodiment of the present application is shown;

[0039] Figure 3 A schematic diagram showing an application example provided by an embodiment of the present application;

[0040] Figure 4 A schematic diagram showing an application example provided by an embodiment of the present application;

[0041] Figure 5 A schematic structural diagram of a device for predicting landslide sliding trend provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In order to improve the current existing technology that cannot accurately predict the sliding trend of landslides, and thus achieve more effective monitoring and prevention measures. This embodiment provides a method for predicting the sliding trend of landslides, such as Figure 1 As shown, the method includes:

[0044] Step 101: Determine potential landslide areas by surveying and monitoring the working slope of the open-pit coal mine.

[0045] In some examples, the working slope of an open-pit coal mine (also known as the working slope surface of an open-pit coal mine) refers to the side slope composed of steps that are being mined and are about to be mined. It is an inclined surface around the open-pit coal mine and can be composed of multiple steps, each of which includes an upper flat plate, a lower flat plate, a slope surface, and other parts. The slope surface of the working slope is an imaginary slope made by the bottom line of the top step and the bottom line of the bottom step. The working slope of an open-pit coal mine is an important part of open-pit coal mining, and its stability has an important impact on the safety and economic benefits of coal mines. In the process of open-pit coal mining, the geological conditions are complex, and the disturbance effects of various structural surfaces (such as joints, bedding, fissures, etc.) in the rock mass and blasting, excavation, and other factors may all lead to landslides. The potential landslide area is the area where landslides may occur in the working slope of an open-pit coal mine.

[0046] For example, geological surveys can be used to understand the geological conditions, lithology, and structural surfaces of the mining area, determine the possibility of landslides, or observe and analyze the deformation and displacement of the slopes to promptly detect signs of landslides. Remote sensing technology can also be used to identify and monitor landslide areas to improve the accuracy and efficiency of monitoring.

[0047] Step 102: Analyze the stability of the landslide according to the engineering geological conditions of the landslide area.

[0048] For example, the stability of the slope in the landslide area is affected by a variety of engineering geological conditions. The evolution stage and stability of the slope can be determined by studying the size, slope shape, geological structure, geological environment, geological history, deformation and damage traces of the slope. The stability coefficient of the slope can also be calculated and the stability of the slope can be evaluated by using limit equilibrium analysis methods, numerical analysis methods, etc.

[0049] Step 103: predicting the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide.

[0050] In some examples, engineering disturbance may refer to the interference or change caused by engineering activities to the surrounding environment of the working slope of an open-pit coal mine, which may include blasting disturbance, excavation disturbance, mechanical disturbance, mining stripping, etc. After the landslide is disturbed by these disturbances, it is necessary to conduct a qualitative analysis of the stability of the landslide based on the results of geological surveys and environmental factor monitoring, combined with the type and intensity of engineering disturbances. If the overall stability coefficient of the landslide body is high and the impact of environmental factors on the stability of the landslide is small, then the sliding trend of the landslide may be weak. On the contrary, if the overall stability coefficient of the landslide body is low and the impact of environmental factors on the stability of the landslide is large, then the sliding trend of the landslide may be strong, where the sliding trend of the landslide may also include the type, direction, and impact range of the landslide.

[0051] For example, taking reasonable preventive and control measures based on the predicted sliding trend of the landslide can effectively reduce the probability and degree of damage of landslide disasters. We will further strengthen the discussion and research on the instability mechanism of the working slope, and propose more effective monitoring and prevention measures based on the analysis of the stability of the existing slope, so as to promote the safety and progress of open-pit coal mines.

[0052] This embodiment first determines the potential landslide area by surveying and monitoring the working slope of the open-pit coal mine; then analyzes the stability state of the landslide according to the engineering geological conditions of the landslide area; and then predicts the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide. Compared with the current existing technology, this embodiment is based on the survey and monitoring of the working slope of the open-pit coal mine, and comprehensively considers the engineering disturbance conditions on the basis of the stability state of the landslide, and can accurately predict the sliding trend of the landslide, so as to accurately monitor and control the working slope of the open-pit coal mine, thereby improving the stability of the slope, reducing the risk of landslide, and ensuring the safe production of the open-pit coal mine.

[0053] Further, as a refinement and extension of the above embodiment, in order to fully illustrate the specific implementation process of the method of this embodiment, this embodiment provides the following Figure 2 The specific method shown includes:

[0054] Step 201: Determine potential landslide areas by surveying and monitoring the working slope of the open-pit coal mine.

[0055] For example, the stratum lithology of the project site, especially the distribution and intersection of strongly weathered mudstone and strongly weathered sandstone, can be ascertained through drilling and pit exploration. According to the landform, stratum lithology and slope structure, the strips and levels of the landslide can be decomposed. Through drilling exploration, combined with geological mapping and survey data, it is preliminarily judged that the sliding surface may be located at the intersection of strongly weathered mudstone and strongly weathered sandstone. A borehole inclinometer is used for deep displacement monitoring to obtain displacement data at different depths inside the landslide body. In order to determine the possible landslide area.

[0056] Optionally, step 201 may specifically include: determining the position of the sliding surface of the landslide based on the engineering geological survey results and deep displacement monitoring data of the working slope of the open-pit coal mine; and analyzing and determining the potential landslide area in the working slope of the open-pit coal mine by monitoring the deformation of the sliding surface.

[0057] For example, by combining the results of engineering geological surveys and the shear dislocation characteristics of deep displacement monitoring curves, it can be determined that the sliding surface is located in the evolutionary weak layer at the junction of strongly weathered mudstone and strongly weathered sandstone. For example, a displacement-depth curve can be drawn based on the monitoring data, and the morphological characteristics of the curve can be analyzed. The mutation point in the curve or the location where the displacement increases significantly may correspond to the location of the sliding surface. Then observe whether the shear dislocation characteristics appear in the monitoring curve, that is, the displacement suddenly increases or decreases within a certain depth range, and this change is consistent with the sliding direction of the landslide. Combined with the results of engineering geological surveys, it is determined whether this shear dislocation occurs at the junction of strongly weathered mudstone and strongly weathered sandstone.

[0058] Step 202: Analyze the stability of the landslide according to the engineering geological conditions of the landslide area.

[0059] For example, the physical and mechanical properties of rocks, including shear strength, compressive strength, degree of weathering, etc., can be analyzed based on the surveyed engineering geological data to evaluate the stability of the landslide.

[0060] Optionally, step 202 may specifically include: using an engineering geological model to analyze and obtain strength parameters that affect the stability of the landslide, wherein the engineering geological model is constructed based on the surface topography within the boundary of the open-pit coal mine; performing stability verification on the landslide area based on the limit equilibrium theory to obtain the stability coefficient of the landslide under different strength parameters; determining the range of shear strength indicators of the soft layer of cement rock soaked in the landslide by analyzing the sensitivity between the strength parameters and the stability coefficients corresponding to the strength parameters; and determining the stability state of the landslide based on the range of shear strength indicators.

[0061] In some examples, it is possible to accurately identify the working slope landslide area and deformation characteristics by conducting an air-ground coordinated integrated three-dimensional precise survey of the working slope slope of the open-pit mine area, and to establish an accurate three-dimensional engineering geological model of the landslide area. Specifically, topographic mapping can be carried out within the boundaries of the open-pit coal mine, and the use of drones, satellite aerial surveys, three-dimensional laser scanning and other means can be used to quickly construct accurate surface topography within the boundaries of the open-pit coal mine, and generate a digital elevation model (Digital Elevation Model) and a three-dimensional engineering geological model of the working slope landslide area of ​​the open-pit coal mine that can fully explain the overall shape and local detailed characteristics of the slope.

[0062] For example, Figure 3 The figure shows a typical section of the digital elevation map and engineering geological model of the landslide area. Through the three-dimensional monitoring and analysis of the sliding deformation, it can be determined that the boundary width of the potential landslide area of ​​the working slope is 370-390m, with an average of 380m, and the sliding volume is about 1.25 million m3, and the landslide mode of this landslide area is shear deformation failure.

[0063] In some examples, the stability state of the working slope and the engineering geological conditions can be combined to conduct sensitivity analysis of landslide strength parameters. Combining field monitoring, theoretical analysis and numerical simulation, the shear strength index of the weak layer of cement rock in the landslide can be further obtained through inversion analysis.

[0064] For example, the main parameters affecting the stability of the landslide can be analyzed based on the engineering geological model and exploration results, and the stability of the landslide can be verified using the limit equilibrium theory to obtain the stability coefficient of the landslide under different parameters. The sensitivity between the parameters and the degree of influence on the stability of the landslide can be further analyzed to obtain the value range of the landslide shear strength index. Among them, the basic calculation method of the limit equilibrium theory is shown in Formula 1:

[0065]

[0066] Among them, F is the safety factor, which can represent the stability index of the slope, Mr is the anti-sliding moment, Mo is the sliding moment, c is the internal friction angle, L is the sliding surface length, which represents the horizontal projection distance of the sliding surface, t is the sliding surface thickness, g is the gravitational acceleration, hi represents the height of the i-th strip, which represents the distance from a point above the sliding surface to the sliding surface, αi represents the inclination angle of the i-th strip, wi represents the mass of the i-th strip, and n represents the number of slices, which represents the total number of slices on the sliding surface.

[0067] In some examples, through the investigation and study of the engineering geology and hydrogeology of the working slope of the open-pit coal mine, the formation mechanism of the working slope landslide can be identified, and the mechanism of the evolution and development of the weak layer of the working slope landslide in the open-pit coal mine can be revealed. Through the study of the formation mechanism of the weak layer, it is clear that the mudstone with a small thickness on the slope is soaked by groundwater for a long time due to the water-isolating effect, forming a typical "evolved weak layer" in the open-pit coal mine. The shear strength of the weak layer has a time effect, the strength of the weak layer is low, and it has rheological characteristics. The direct cause of the landslide on the working slope can also be clarified, that is, as the stripping progresses, the excavation disturbance at the foot of the working slope leads to the release of slope stress. The slope slides along the weak layer to the free surface under high pressure stress. Due to the creep of the foot of the slope, the anti-sliding force of the front edge is gradually reduced, which eventually leads to the instability of the slope. By performing finite difference simulation on the working slope, we can intuitively understand the arc-shaped sliding of the slope along the bottom layer along the evolving weak layer; then, based on the excavation unloading-shear failure mechanism of the working slope of the thick loess layer in the open-pit coal mine controlled by the "evolved weak layer", we can effectively predict the sliding trend of the landslide and take corresponding prevention and control measures, thereby ensuring the safety of people's lives and property and the smooth progress of engineering construction.

[0068] Step 203: predict the deformation dynamics of the landslide and the time of the arrival of the sliding acceleration stage according to the creep characteristics of the structural surface of the soft layer of mud rock in the landslide, and determine the subsequent sliding trend of the landslide in combination with the influence range of the engineering disturbance.

[0069] In some examples, a landslide precision control and mining coordination system can be established, including building a GNSS dynamic online monitoring platform for the working slope of the mining area, selecting representative points on the working slope landslide as monitoring points, combining with the Beidou satellite navigation system, and accurately monitoring the real-time displacement and deformation of the landslide body. By predicting the landslide deformation, the deformation stage of the landslide body can be determined, and the deformation dynamics of the slope and the time of the acceleration stage can be predicted based on the creep characteristics of the weak structural surface. In combination with the influence range of engineering disturbances such as blasting disturbance and excavation disturbance in the operation area, the warning line is drawn, and the safe production area is further determined.

[0070] Optionally, step 203 may specifically include: analyzing the subsequent sliding trend of the landslide according to the propagation law of the blasting stress wave and the influence of the blasting charge on the landslide.

[0071] For example, disturbances from various factors will affect the potential sliding trend of landslides. Based on the propagation law of blasting stress waves on the working slope with weak interlayers, it can be seen that as the propagation distance increases, the velocity response of stress waves gradually decays, which fully reflects the attenuation effect of loose rock and soil media on vibration waves. Among them, the blasting impact is mainly horizontal low-frequency response; according to the dynamic response of the working slope of the open-pit mine under different blasting charges, it can be found that the vibration velocity of the low flat plate slope is significantly more sensitive to the blasting charge than the high-altitude flat plate. If the blasting charge is too high, it may cause the vibration response speed at the foot of the slope to increase significantly, and the plastic deformation of the rock and soil at the foot of the slope will accumulate rapidly, which will lead to slope instability, which may become another key external cause of sliding in addition to deadweight and unloading.

[0072] Optionally, the above analysis of the subsequent sliding trend of the slope may specifically include: simulating and analyzing the subsequent sliding process of the landslide based on a particle flow algorithm; and predicting the sliding trend of the landslide according to the result of the simulation analysis.

[0073] In some examples, the subsequent sliding process of the working slope landslide can be simulated and analyzed with the help of the three-dimensional particle flow code (PFC3D). The subsequent sliding trend of the working slope landslide in the open-pit mine is analyzed. It is found that the landslide slides under the action of gravity and forms a certain pressure foot area at the foot of the slope, which is basically consistent with the verification result of the slope after the assumed sliding by the limit equilibrium. Among them, the sliding range characteristics of the slope when the model reaches equilibrium are as follows Figure 4As shown, it reveals that the potential sliding of the working slope presents the characteristics of slow sliding, and the sliding influence range of the working slope is predicted. The calculation method of particle satisfaction when using particle flow software simulation is shown in Formula 2:

[0074]

[0075] Among them, Fi represents the total force on the i-th particle, K is the inelastic collision coefficient, U is the velocity of the particle, n is the normal vector, and m is the mass of the particle.

[0076] Optionally, the method of this embodiment may also include: if the sliding trend of the landslide is abnormal, optimizing parameters such as mining production, workbench design and blasting, and re-demarcating the potential landslide area; determining the safe production area based on the re-demarcated potential landslide area.

[0077] In some examples, a multi-parameter information feedback and early warning visualization mechanism can also be established to timely collect relevant information such as mining stripping, blasting vibration, mechanical disturbance, etc. in the production area, strengthen personnel inspections, and analyze the sliding trend of the landslide in combination with the monitoring results. Once the landslide deformation is abnormal, timely feedback will be given, and the landslide safety status will be warned. The parameters such as mining production, working gang design and blasting will be optimized in time to control the landslide deformation rate, and the particle flow principle will be used to simulate and predict the potential sliding trend, accurately determine the minimum range of landslide impact, and re-delineate the potential danger area of ​​landslide according to the landslide impact range and implement precise control to ensure the stripping operation in the safe production area and reduce the impact on open-pit coal mining. Furthermore, a comprehensive treatment plan of "drainage and drainage + clearing and stripping" can be proposed based on the characteristics of landslides on the working gang slopes of open-pit coal mines. It can effectively reduce the water content and deadweight of the slope rock and soil, improve the shear strength and stability of the slope, significantly reduce the risk of landslides, and ensure the safe production of open-pit coal mines. Compared with a single treatment measure, a comprehensive treatment plan can make more effective use of resources and reduce unnecessary investment.

[0078] By implementing the scheme of this embodiment, the destruction mechanism and landslide characteristics of the working slope landslide in the thick loess layer of the open-pit coal mine are studied, and the balance between landslide, blasting disturbance, disaster prevention and control under the conditions of limited advancement and completion of coal mining tasks is comprehensively considered, and the working slope parameter optimization and safe mining plan are formulated, which can significantly improve the stability of the slope, reduce the risk of landslide, and ensure the safe production of open-pit coal mines.

[0079] Compared with the current existing technology, this embodiment is based on the investigation and monitoring of the working slope of the open-pit coal mine, and comprehensively considers the engineering disturbance conditions on the basis of the stability state of the landslide. It can accurately predict the sliding trend of the landslide, so as to accurately monitor and control the working slope of the open-pit coal mine, thereby improving the stability of the slope, reducing the risk of landslide, and ensuring the safe production of the open-pit coal mine.

[0080] Further, as Figure 1 The specific implementation of the method shown in the embodiment provides a device for predicting the sliding trend of a landslide, such as Figure 5 As shown, the device includes: a determination module 31, an analysis module 32, and a prediction module 33.

[0081] The determination module 31 is configured to determine potential landslide areas by surveying and monitoring the working slope of the open-pit coal mine;

[0082] An analysis module 32, configured to analyze the stability state of the landslide according to the engineering geological conditions of the landslide area;

[0083] The prediction module 33 is configured to predict the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide.

[0084] In some examples, the determination module 31 is specifically configured to determine the sliding surface position of the landslide based on the engineering geological survey results and deep displacement monitoring data of the working slope of the open-pit coal mine; and analyze and determine the potential landslide area in the working slope of the open-pit coal mine by monitoring the deformation of the sliding surface.

[0085] In some examples, the analysis module 32 is specifically configured to use an engineering geological model to analyze and obtain strength parameters that affect the stability of the landslide, wherein the engineering geological model is constructed based on the surface topography within the boundary of an open-pit coal mine; perform stability verification on the landslide area based on the limit equilibrium theory to obtain the stability coefficient of the landslide under different strength parameters; determine the range of values ​​of the shear strength index of the soft layer of cement rock soaked in the landslide by analyzing the sensitivity between the strength parameters and the stability coefficient corresponding to the strength parameters; and determine the stability state of the landslide based on the range of values ​​of the shear strength index.

[0086] In some examples, the prediction module 33 is specifically configured to predict the deformation dynamics of the landslide and the time of the arrival of the sliding acceleration stage based on the creep characteristics of the structural surface of the soft layer of mud rock immersed in the landslide, and determine the subsequent sliding trend of the landslide in combination with the influence range of the engineering disturbance.

[0087] In some examples, the prediction module 33 is further configured to analyze the subsequent sliding trend of the landslide according to the propagation law of the blasting stress wave and the influence of the blasting charge on the landslide.

[0088] In some examples, the prediction module 33 is further configured to simulate and analyze the subsequent sliding process of the landslide based on a particle flow algorithm; and predict the sliding trend of the landslide according to the result of the simulation analysis.

[0089] In some examples, the prediction module 33 is further configured to optimize the mining production parameters, workbench design parameters and blasting parameters and redefine the potential landslide area if the sliding trend of the landslide is abnormal; and determine the safe production area based on the redefined potential landslide area.

[0090] Based on the above Figure 1 and Figure 2 The method shown in the embodiment also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned Figure 1 and Figure 2 The method shown.

[0091] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of the present application.

[0092] Based on the above Figure 1 and Figure 2 The method shown, and Figure 5 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides an electronic device, which may include a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 1 and Figure 2 The method shown.

[0093] Optionally, the above-mentioned physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0094] Those skilled in the art will appreciate that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0095] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the above-mentioned physical device, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0096] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or can be implemented by hardware. By applying the scheme of this embodiment, based on the survey and monitoring of the working slope of an open-pit coal mine, and taking into account the engineering disturbance conditions on the basis of the stability state of the landslide, the sliding trend of the landslide can be accurately predicted, so as to accurately monitor and control the working slope of the open-pit coal mine, thereby improving the stability of the slope, reducing the risk of landslide, and ensuring the safe production of the open-pit coal mine. The scheme of this embodiment is suitable for advancing the fields of survey, monitoring, mechanism and law research, stability evaluation, prevention and control, and mining scheme design of landslides on the working slopes of thick loess layers in large open-pit coal mines with limited space, and can provide practical guidance for similar projects.

[0097] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0098] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A method for predicting landslide sliding trend, characterized in that: include: Identify potential landslide areas through investigation and monitoring of open-pit coal mine working slopes; Analyze the stability of the landslide according to the engineering geological conditions of the landslide area; Based on the stability state of the landslide and the impact of the engineering disturbance on the landslide, the sliding trend of the landslide is predicted.

2. The method according to claim 1, characterized in that Through the investigation and monitoring of the working slope of the open-pit coal mine, potential landslide areas are identified, including: Determine the sliding surface position of the landslide according to the engineering geological survey results and deep displacement monitoring data of the working slope of the open-pit coal mine; By monitoring the deformation of the sliding surface, the potential landslide area in the working slope of the open-pit coal mine is analyzed and determined.

3. The method according to claim 1, characterized in that The step of analyzing the stability of the landslide according to the engineering geological conditions of the landslide area includes: The strength parameters affecting the stability of the landslide are obtained by analyzing the engineering geological model, wherein the engineering geological model is constructed based on the surface topography within the boundary of the open-pit coal mine; Based on the limit equilibrium theory, the stability of the landslide area is verified to obtain the stability coefficient of the landslide under different strength parameters; By analyzing the sensitivity between the strength parameters and the stability coefficients corresponding to the strength parameters, the value range of the shear strength index of the weak layer of cement rock immersed in the landslide is determined; The stability state of the landslide is determined according to the value range of the shear strength index.

4. The method according to claim 1, characterized in that: The method of predicting the sliding trend of the landslide based on the stability state of the landslide and the influence of the engineering disturbance on the landslide comprises: According to the creep characteristics of the structural surface of the weak layer of mud rock in the landslide, the deformation dynamics of the landslide and the time of the arrival of the sliding acceleration stage are predicted, and the subsequent sliding trend of the landslide is determined in combination with the influence range of the engineering disturbance.

5. The method according to claim 4, characterized in that The determining of the subsequent sliding trend of the landslide in combination with the influence range of the engineering disturbance includes: According to the propagation law of blasting stress wave and the influence of blasting charge on the landslide, the subsequent sliding trend of the landslide is analyzed.

6. The method according to claim 5, characterized in that The analyzing the subsequent sliding trend of the landslide comprises: Based on the particle flow algorithm, the subsequent sliding process of the landslide is simulated and analyzed; According to the results of the simulation analysis, the sliding trend of the landslide is predicted.

7. The method according to claim 1, characterized in that After predicting the sliding trend of the landslide based on the stability state of the landslide and the influence of the engineering disturbance on the landslide, the method further includes: If the sliding trend of the landslide is abnormal, the mining production parameters, working gang design parameters and blasting parameters are optimized, and the potential landslide area is redefined; Determine the safe production area based on the re-demarcated potential landslide area.

8. A device for predicting landslide sliding trend, characterized in that: include: A determination module is configured to determine potential landslide areas by surveying and monitoring the working slope of an open-pit coal mine; An analysis module configured to analyze the stability state of the landslide according to the engineering geological conditions of the landslide area; The prediction module is configured to predict the sliding trend of the landslide based on the stability state of the landslide and the impact of the engineering disturbance on the landslide.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An electronic device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

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