Rapid simplified analysis method and system for stability of soil-rock mixed slope, terminal and storage medium

Abstract

The invention relates to the technical field of slope engineering data processing, and discloses a soil-rock mixed slope stability rapid simplified analysis method and system, a terminal and a storage medium, and the method comprises the steps: determining model parameters of a soil-rock mixed slope stability rapid simplified analysis model based on a soil-rock mixture strength criterion and parameters obtained through an indoor test; acquiring side slope size information acquired by on-site survey on-site engineering; according to the side slope size information, the safety coefficient of the pure clay side slope is calculated based on a limit equilibrium method; and substituting the model parameters, the stone content and the safety coefficient of the pure clay side slope into the rapid simplified analysis model for the stability of the soil-rock mixed side slope, and solving and outputting the safety coefficient of the soil-rock mixed side slope. The invention provides a simple and practical method for calculating the safety coefficient of the soil-rock mixed slope, and the stability of the soil-rock mixed slope can be quickly and accurately evaluated under the condition of large-range rock content only according to a small amount of indoor tests.

Description

Technical Field

[0001] The present invention relates to the technical field of slope engineering data processing, and in particular to a method, system, terminal and storage medium for quickly and simply analyzing the stability of a soil-rock mixed slope. Background Art

[0002] Soil-rock mixtures are widely distributed in mountainous areas and are an extremely heterogeneous geotechnical medium composed of a matrix of gravel, sand, and clay. Under adverse engineering conditions such as frequent tectonic activity and heavy rainfall, soil-rock mixture slope instability disasters are frequent, resulting in significant loss of life and property. Therefore, developing simple and effective stability analysis methods and rationally estimating the safety factor of soil-rock mixture slopes are key to analyzing geological hazard risks and designing disaster prevention and mitigation projects for complex accumulations in mountainous areas.

[0003] Influenced by sedimentation and weathering conditions, the stone gradation, shape, and content of soil-rock mixtures often exhibit significant spatial variability, resulting in significant differences in their engineering properties. The presence of rigid rocks can affect the instability mechanism of soil-rock slopes, leading to stress concentration within the slope and a "rock-around" phenomenon in the development of the failure sliding surface. Its failure mode differs significantly from that of pure clay slopes. However, conventional analysis methods do not consider the influence of the stone reinforcement effect on the failure mechanism of soil-rock slopes, making it impossible to reasonably assess the safety factor of soil-rock slopes. Furthermore, traditional numerical simulation methods require a large amount of computing power and time, making the process cumbersome and inefficient.

[0004] Therefore, the existing technology needs to be improved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that, in response to the defects of the existing technology, the present invention provides a method, system, terminal and storage medium for quickly and simply analyzing the stability of soil-rock mixture slopes, so as to solve the problem that the traditional calculation method of the safety factor of soil-rock mixture slopes cannot directly quantify the influence of rock content, resulting in inaccurate evaluation.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows: In a first aspect, the present invention provides a rapid and simplified analysis method for soil-rock mixed slope stability, comprising: Determine the model parameters of the soil-rock mixture slope stability rapid simplified analysis model based on the soil-rock mixture strength criterion and the parameters obtained from laboratory tests; Obtain slope dimension information collected from on-site surveys and field projects; Calculating the safety factor of the pure clay slope based on the limit equilibrium method according to the slope size information; The model parameters, rock content and the safety factor of the pure clay slope are substituted into the soil-rock mixed slope stability rapid simplified analysis model to solve and output the soil-rock mixed slope safety factor.

[0007] In one implementation, the method of determining the model parameters of the soil-rock mixture slope stability rapid simplified analysis model based on the soil-rock mixture strength criterion and the parameters obtained from the indoor test includes: Based on the soil strength parameters determined by indoor tests and the soil-rock mixture strength criterion based on the stone reinforcement effect, structural parameters were calibrated to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture with changes in stone content.

[0008] In one implementation, the soil strength parameters determined based on indoor tests are combined with the soil-rock mixture strength criterion based on the stone reinforcement effect to calibrate the structural parameters used to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture as the stone content changes, including: The peak stress ratios of soil-rock mixture and pure clay matrix were obtained through triaxial indoor tests. M and M m , we can get the nonlinear relationship between the peak stress ratio and the stone volume fraction: ; in, and are the peak stress ratios of the soil-rock mixture and the pure clay matrix, 、 are the shear stress and effective average normal stress of the soil-rock mixture, 、 are the shear stress and effective average normal stress of the pure clay matrix, respectively; ψ a is the stone volume fraction; m 1 is the structural variable used for the structural evolution process between rocks of soil-rock mixture under unit conditions; m The change of 1 can be expressed by the following power function: ; in, x 1 represents the structural variable m 1. Structural parameters that are sensitive to stone content and are related to the particle shape and gradation distribution characteristics of the stone body; ψ th is the limiting stone volume fraction, which is directly calculated from the basic properties of the stone body: ; in, e min is the minimum porosity ratio, corresponding to the densest packing state of the stone skeleton; According to the peak stress ratio of the soil-rock mixture and the pure clay matrix M andM m , fitting to determine the structural variables m 1. And calibrate the structural parameters x 1.

[0009] In one implementation, obtaining slope dimension information collected from on-site surveys and field projects includes: Obtaining slope height during field surveys H and slope α , and obtain the slope size information.

[0010] In one implementation, the calculation of the safety factor of a pure clay slope based on the limit equilibrium method according to the slope size information includes: Based on the limit equilibrium method, the safety factor of the pure clay slope is calculated using the following formula: ; in, W i is the soil gravity, l is the width of the assumed soil strip, c is the cohesion of pure clay matrix, f is the internal friction angle of pure clay matrix, α i is the angle between the tangent line of the soil strip sliding arc segment and the horizontal line, the coefficient m ai for: ; Perform iterative calculations and start with F sm =1, iterate until the result converges.

[0011] In one implementation, the pure clay matrix has a cohesive strength of c and the internal friction angle of the pure clay matrix f Obtained through direct shear or triaxial tests.

[0012] In one implementation, substituting the model parameters, rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model to solve and output the safety factor of the soil-rock mixed slope includes: Substitute the model parameters, the rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model, and calculate the safety factor of the soil-rock mixed slope according to the following formula: ; in, F s is the safety factor of the soil-rock mixed slope.

[0013] In a second aspect, the present invention provides a rapid and simplified analysis system for soil-rock mixed slope stability, comprising: A model parameter determination module is used to determine the model parameters of a rapid simplified analysis model for soil-rock mixture slope stability based on soil-rock mixture strength criteria and parameters obtained from laboratory tests; The slope dimension acquisition module is used to obtain slope dimension information collected from on-site surveys and field projects; A pure clay slope safety factor calculation module is used to calculate the pure clay slope safety factor based on the limit equilibrium method according to the slope size information; The soil-rock mixed slope safety factor solving module is used to substitute the model parameters, rock content and the pure clay slope safety factor into the soil-rock mixed slope stability rapid simplified analysis model, solve and output the soil-rock mixed slope safety factor.

[0014] In a third aspect, the present invention provides a terminal comprising: a processor and a memory, wherein the memory stores a rapid simplified analysis program for the stability of a soil-rock mixture slope, and when the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by the processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described in the first aspect.

[0015] In a fourth aspect, the present invention also provides a computer-readable storage medium, which stores a rapid simplified analysis program for the stability of a soil-rock mixture slope. When the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by a processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described in the first aspect.

[0016] The present invention adopts the above technical solution to achieve the following effects: The present invention determines soil strength parameters based on indoor tests. Combined with a soil-rock mixture strength criterion that considers the stone reinforcement effect, structural parameters are calibrated to describe the evolution of the soil-rock mixture's internal structure and mechanical properties as the stone content changes. Slope dimensions are obtained through on-site surveys, and the safety factor of pure clay slopes is calculated using the conventional limit equilibrium method. Based on over 500 sets of finite element numerical simulation tests, a rapid and simplified analysis model for soil-rock mixture slope stability is proposed that considers key influencing factors such as stone content, stone gradation, and shape. Substituting the safety factor of pure clay slopes into the safety factor, the safety factor of soil-rock mixture slopes under different stone content conditions can be quickly calculated. The present invention proposes a simple and practical method for calculating the safety factor of soil-rock mixture slopes. Based on only a small number of indoor tests, this method can rapidly assess the stability of soil-rock mixture slopes under a wide range of stone content conditions, providing a theoretical basis for disaster analysis and disaster prevention and mitigation design, effectively improving engineering efficiency and ensuring infrastructure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 It is a flow chart of the rapid and simplified analysis method for the stability of soil-rock mixed slope in the present invention.

[0019] Figure 2 It is a schematic diagram of the evolution law of shear zones under different rock contents in the present invention.

[0020] Figure 3 It is a linear relationship diagram of structural parameters of the shear strength and stability safety factor of the soil-rock mixture in the present invention.

[0021] Figure 4 It is a comparison chart of the safety factor prediction values of different types of soil-rock mixed slopes in the present invention and the results of related literature.

[0022] Figure 5 This is a curve diagram showing how the peak stress ratio of the soil-rock mixture varies with the rock content in the present invention.

[0023] Figure 6 It is a functional principle diagram of a terminal in one implementation of the present invention.

[0024] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear and distinct, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Exemplary Methods Currently, due to the influence of sedimentation and weathering conditions, the stone gradation, shape, and content of soil-rock mixtures often have significant spatial variability, resulting in significant differences in their engineering properties. The presence of rigid rocks can affect the instability mechanism of soil-rock slopes, leading to stress concentration within the slope and a "rock-around" phenomenon in the development of the failure sliding surface. Its failure mode is significantly different from that of pure clay slopes. However, conventional analysis methods do not consider the impact of the stone reinforcement effect on the failure mechanism of soil-rock slopes, making it impossible to reasonably evaluate the safety factor of soil-rock slopes. In addition, traditional numerical simulation methods require a lot of computing power and time, and the process is cumbersome and inefficient.

[0027] In response to the above technical problems, an embodiment of the present invention provides a method for quickly and simply analyzing the stability of a soil-rock mixture slope. This method determines soil strength parameters based on indoor tests, combines the soil-rock mixture strength criterion that considers the stone reinforcement effect, and calibrates the structural parameters to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture with changes in stone content; obtains slope size information through on-site surveys, and calculates the safety factor of the pure clay slope using the conventional limit equilibrium method; based on more than five hundred sets of finite element numerical simulation tests, a quickly and simplified analysis model for the stability of a soil-rock mixture slope is proposed that considers key influencing factors such as stone content, stone grading, and shape. By substituting the safety factor of the pure clay slope into the safety factor of the soil-rock mixture slope, the safety factor of the soil-rock mixture slope under different stone content conditions can be quickly calculated.

[0028] The embodiment of the present invention proposes a simple and practical method for calculating the safety factor of soil-rock mixed slopes. Based on only a small number of indoor tests, it can realize the rapid assessment of the stability of soil-rock mixed slopes under a wide range of rock content conditions, providing a theoretical basis for disaster analysis and disaster prevention and mitigation design, effectively improving engineering efficiency and ensuring infrastructure safety.

[0029] like Figure 1 As shown, an embodiment of the present invention provides a rapid and simplified analysis method for the stability of a soil-rock mixed slope, comprising the following steps: Step S100 : determining model parameters of a soil-rock mixture slope stability rapid simplified analysis model based on the soil-rock mixture strength criterion and parameters obtained from indoor tests.

[0030] Specifically, in one implementation of this embodiment, step S100 includes the following steps: Step S101: determine soil strength parameters based on indoor tests, combine the soil-rock mixture strength criterion with the stone reinforcement effect, and calibrate to obtain structural parameters used to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture with changes in stone content.

[0031] In this embodiment, soil strength parameters (e.g., peak stress ratio) are determined based on indoor tests (e.g., triaxial indoor tests), and structural parameters are calibrated based on the soil-rock mixture strength criterion that takes into account the stone reinforcement effect. The structural parameters are used to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture as the stone content changes.

[0032] Specifically, in one implementation of this embodiment, step S101 includes the following steps: Step S101a, through triaxial indoor test, obtain the peak stress ratio of soil-rock mixture and pure clay matrix respectively M and M m, we can get the nonlinear relationship between the peak stress ratio and the stone volume fraction: ; in, and are the peak stress ratios of the soil-rock mixture and the pure clay matrix, 、 are the shear stress and effective average normal stress of the soil-rock mixture, 、 are the shear stress and effective average normal stress of the pure clay matrix, respectively; ψ a is the stone volume fraction; m 1 is the structural variable used for the structural evolution process between rocks of soil-rock mixture under unit conditions; m The change of 1 can be expressed by the following power function: ; in, x 1 represents the structural variable m 1. Structural parameters that are sensitive to stone content and are related to the particle shape and gradation distribution characteristics of the stone body; ψ th is the limiting stone volume fraction, which is directly calculated from the basic properties of the stone body: ; in, e min is the minimum porosity ratio, corresponding to the densest packing state of the stone skeleton; Step S101b, based on the peak stress ratio of the soil-rock mixture and the pure clay matrix M and M m , fitting to determine the structural variables m 1. And calibrate the structural parameters x 1.

[0033] In this embodiment, the above triaxial indoor test was used to determine the nonlinear relationship between the peak stress ratio of the soil-rock mixture and the pure clay matrix and the change in the stone volume fraction, and to determine the evolution law of the internal structure and mechanical properties of the soil-rock mixture with the change in stone content, thereby obtaining a mathematical model for the rapid and simplified analysis of the stability of the soil-rock mixture slope. In this process, the strength criterion of the soil-rock mixture that takes into account the stone reinforcement effect is used in this embodiment to fit and determine the structural variables and calibrate the structural parameters, and these parameters are used as model parameters of the rapid and simplified analysis model of the stability of the soil-rock mixture slope.

[0034] In this embodiment, soil strength parameters may also be determined through other indoor tests, for example, direct shear tests, etc. to obtain corresponding soil strength parameters, thereby calculating the safety factor of the soil-rock mixture slope.

[0035] like Figure 1 As shown, an embodiment of the present invention provides a rapid and simplified analysis method for the stability of a soil-rock mixed slope, comprising the following steps: Step S200: Obtain slope dimension information collected from on-site surveys and field projects.

[0036] In this embodiment, the slope height in the field survey is H ,slope α , providing parameters for pure calculation of safety factor of pure clay slope; among them, traditional measurement technology or modern digital technology can be used to obtain slope size information in field survey and field engineering.

[0037] Specifically, in one implementation of this embodiment, step S200 includes the following steps: Step S201: Obtain the slope height during on-site survey of the project H and slope α , and obtain the slope size information.

[0038] In this embodiment, when using traditional measurement technology to obtain slope dimension information, a total station and a distance meter can be used to combine measurement methods. This method uses the total station to measure the coordinates of key points such as the top and foot of the slope, and uses the distance meter to obtain the horizontal distance and height difference of the slope surface, calculate the slope gradient, slope height and slope length, and thus determine the slope height. H and slope α ; The cross-section measurement method can also be used. This method arranges typical sections along the slope direction, uses a level or theodolite to measure the elevation changes of the slope surface within the section, and draws a cross-section diagram to extract parameters such as slope angle and slope height.

[0039] In this embodiment, when modern digital technology is used to obtain slope dimension information, parameters can be obtained through drone aerial survey and 3D modeling methods or 3D laser scanning methods. Among them, drone aerial survey and 3D modeling methods mainly use drones equipped with high-precision cameras or laser radar (LiDAR) to collect multi-angle images of the slope, combine photogrammetry technology to generate a 3D point cloud model, and directly extract the slope geometric dimensions (such as slope height, slope angle, and slope curvature) to determine the slope height. H and slope α The 3D laser scanning method mainly uses a ground-based 3D laser scanner to quickly obtain dense point cloud data on the slope surface, generate a high-precision digital elevation model (DEM) through software analysis, and accurately calculate parameters such as slope volume and slope distribution to determine the slope height. H and slopeα .

[0040] like Figure 1 As shown, an embodiment of the present invention provides a rapid and simplified analysis method for the stability of a soil-rock mixed slope, comprising the following steps: Step S300: Calculate the safety factor of the pure clay slope based on the limit equilibrium method according to the slope size information.

[0041] In this embodiment, the conventional limit equilibrium method is used to calculate the safety factor of pure clay slope; F s Previously, the safety factor of pure clay slopes had to be calculated F sm .

[0042] Specifically, in one implementation of this embodiment, based on the limit equilibrium method (LEM) theory, taking the Bishop strip method as an example, the safety factor of the stability of the pure clay slope is F sm is calculated as follows: Step S301: Based on the limit equilibrium method, the safety factor of the pure clay slope is calculated using the following formula: ; in, W i is the soil gravity, l is the width of the assumed soil strip, c is the cohesion of pure clay matrix, f is the internal friction angle of pure clay matrix, α i is the angle between the tangent line of the soil strip sliding arc segment and the horizontal line, the coefficient m ai for: ; Perform iterative calculations and start with F sm =1, iterate until the result converges.

[0043] In this embodiment, the cohesion of the pure clay matrix c and the internal friction angle of the pure clay matrix f Obtained through direct shear or triaxial test; since the safety factor calculation formula is on the right side of the equal sign m ai The safety factor is included and needs to be calculated iteratively. F sm =1, iterate until the result converges.

[0044] like Figure 1As shown, an embodiment of the present invention provides a rapid and simplified analysis method for the stability of a soil-rock mixed slope, comprising the following steps: Step S400: Substitute the model parameters, rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model to solve and output the soil-rock mixed slope safety factor.

[0045] In this embodiment, based on more than 500 sets of finite element numerical simulation experiments, a rapid simplified analysis model for the stability of soil-rock mixed slopes is proposed, which takes into account key influencing factors such as stone content, stone gradation, and shape. By substituting the safety factor of the pure clay slope, the safety factor of the soil-rock mixed slope under different stone content conditions can be quickly calculated.

[0046] Specifically, in one implementation of this embodiment, step S400 includes the following steps: Step S401: Substitute the model parameters, the rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model, and calculate the safety factor of the soil-rock mixed slope according to the following formula.

[0047] in, F s is the safety factor of the soil-rock mixed slope.

[0048] In this embodiment, the model parameters, rock content, and safety factor of pure clay slope are substituted into the simplified calculation model of soil-rock mixed slope to obtain the safety factor of soil-rock mixed slope.

[0049] Specifically, the structural parameters calculated above are extended to the stability analysis of soil-rock mixed slopes, and the formula gives the prediction model of the safety factor of soil-rock mixed slopes: ; Among them, there are four parameters, namely F sm , ψ th , ψ a and x 1.

[0050] During the instability process of soil-rock mixed slope, the high strength of gravel hinders the development of shear zone. Figure 2 The study demonstrates the evolution of shear zones in three different slope types: pure clay, low rock content, and high rock content. At low rock content, the sliding zone resembles that of pure clay slopes, exhibiting a pronounced arc-shaped failure surface. As the rock content increases, the shear zone extension pattern in soil-rock mixed slopes becomes more tortuous and complex, exhibiting an overall "around rock" and "around rock" pattern. Therefore, the influence of rock content must be considered when evaluating the stability of soil-rock mixed slopes.

[0051] To this end, more than 500 sets of numerical simulation tests on soil-rock mixed slope stability were carried out in this embodiment, taking into account the influence of key factors such as stone content, shape, and gradation. The model parameters are shown in Table 1, where the size ratio ( R a ) is defined as the ratio of slope height to the average particle size of rocks. Slope stability structural parameters were fitted by linear regression method. x 2 and shear strength structural parameters x 1 linear relationship between ), taking the calculation results of soil-rock mixed slope under different clay matrix strength parameters as an example, the results are as follows Figure 3 As shown, we get k It is 1.248.

[0052] Table 1: Variables in numerical simulation test of soil-rock mixed slope stability

[0053] In this example, the numerical results of soil-rock mixture slope stability analysis and model test results in existing literature are used to verify the proposed slope safety factor homogenization method. The calculated soil-rock mixture slope model parameters are shown in Table 2.

[0054] Table 2: Variables in numerical simulation tests of soil-rock mixed slope stability in the literature

[0055] The above data comes from public data in existing relevant literature.

[0056] Based on the soil-rock mixture engineering stability evaluation method proposed in this embodiment, the soil-rock mixture slopes of the cases in the relevant literature and some examples of the present invention are predicted, and their safety factors are calculated, such as Figure 4 As shown, Figure 4 The vertical axis is the safety factor calculated by the model proposed in this embodiment, and the horizontal axis is the safety factor obtained by the numerical simulation test in the above literature and this embodiment. Figure 4 The safety factor calculated by the model is compared with the safety factor obtained by simulation test. The results show that the model prediction results are good, which verifies the effectiveness of the simplified calculation method for the safety factor of soil-rock mixed slope proposed. The following is a specific calculation case: In a certain slope engineering condition, the soil-rock mixed slope height H The maximum stone content is 10.0 m, the slope angle is 45°, the average particle size of the stone is 1.0 m, and the maximum stone content is 1.0 m. ψ th The cohesion of pure clay matrix was measured by indoor scale triaxial test. c is 8 kPa, the internal friction angle fThe peak stress ratio of soil-rock mixture under the conditions of 30° and 0% and 55% rock content M m and M ;like Figure 5 As shown, the data were fitted and calibrated to determine the structural parameters x 1= 0.344; Taking the Bishop strip method as an example, the safety factor of the pure clay slope under the above working condition is calculated to be 1.20; Substituting the model parameters and the safety factor of the pure clay slope into the safety factor prediction model of the soil-rock mixed slope, the safety factors of the soil-rock mixed slope with rock contents of 10%, 20%, 30%, 40%, and 50% are obtained to be 1.206, 1.227, 1.267, 1.334, and 1.443, respectively.

[0057] This embodiment achieves the following technical effects through the above technical solution: This embodiment determines soil strength parameters based on indoor tests, combines them with a soil-rock mixture strength criterion that considers the stone reinforcement effect, and calibrates structural parameters to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture as the stone content changes. Slope dimension information is obtained through on-site surveys, and the safety factor of pure clay slopes is calculated using the conventional limit equilibrium method. Based on over 500 sets of finite element numerical simulation tests, a rapid and simplified analysis model for the stability of soil-rock mixture slopes is proposed that considers key influencing factors such as stone content, stone gradation, and shape. By substituting the safety factor of pure clay slopes, the safety factor of soil-rock mixture slopes under different stone content conditions can be quickly calculated. This embodiment proposes a simple and practical method for calculating the safety factor of soil-rock mixture slopes. Based on only a small number of indoor tests, it can quickly assess the stability of soil-rock mixture slopes under a wide range of stone content conditions, providing a theoretical basis for disaster analysis and disaster prevention and mitigation design, effectively improving engineering efficiency, and ensuring infrastructure safety.

[0058] Exemplary devices Based on the above embodiments, the present invention further provides a rapid and simplified analysis system for soil-rock mixed slope stability, comprising: A model parameter determination module is used to determine the model parameters of a rapid simplified analysis model for soil-rock mixture slope stability based on soil-rock mixture strength criteria and parameters obtained from laboratory tests; The slope dimension acquisition module is used to obtain slope dimension information collected from on-site surveys and field projects; A pure clay slope safety factor calculation module is used to calculate the pure clay slope safety factor based on the limit equilibrium method according to the slope size information; The soil-rock mixed slope safety factor solving module is used to substitute the model parameters, rock content and the pure clay slope safety factor into the soil-rock mixed slope stability rapid simplified analysis model, solve and output the soil-rock mixed slope safety factor.

[0059] This embodiment achieves the following technical effects through the above technical solution: This embodiment determines soil strength parameters based on indoor tests, combines them with a soil-rock mixture strength criterion that considers the stone reinforcement effect, and calibrates structural parameters to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture as the stone content changes. Slope dimension information is obtained through on-site surveys, and the safety factor of pure clay slopes is calculated using the conventional limit equilibrium method. Based on over 500 sets of finite element numerical simulation tests, a rapid and simplified analysis model for the stability of soil-rock mixture slopes is proposed that considers key influencing factors such as stone content, stone gradation, and shape. By substituting the safety factor of pure clay slopes, the safety factor of soil-rock mixture slopes under different stone content conditions can be quickly calculated. This embodiment proposes a simple and practical method for calculating the safety factor of soil-rock mixture slopes. Based on only a small number of indoor tests, it can quickly assess the stability of soil-rock mixture slopes under a wide range of stone content conditions, providing a theoretical basis for disaster analysis and disaster prevention and mitigation design, effectively improving engineering efficiency, and ensuring infrastructure safety.

[0060] Based on the above embodiment, the present invention further provides a terminal, whose principle block diagram can be shown as follows: Figure 6 shown.

[0061] The terminal includes: a processor, memory, interface, display screen and communication module connected via a system bus; wherein the processor of the terminal is used to provide computing and control capabilities; the memory of the terminal includes a computer-readable storage medium and an internal memory; the computer-readable storage medium stores an operating system and a computer program; the internal memory provides an environment for the operation of the operating system and computer program in the computer-readable storage medium; the interface is used to connect to external devices; the display screen is used to display corresponding information; and the communication module is used to communicate with a cloud server or other devices.

[0062] When the computer program is executed by a processor, it is used to implement the operation of a rapid simplified analysis method for soil-rock mixture slope stability.

[0063] It will be understood by those skilled in the art that Figure 6 The principle block diagram shown in the figure is only a block diagram of a partial structure related to the solution of the present invention, and does not constitute a limitation on the terminal to which the solution of the present invention is applied. The specific terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0064] In one embodiment, a terminal is provided, which includes: a processor and a memory, wherein the memory stores a rapid simplified analysis program for the stability of a soil-rock mixture slope, and when the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by the processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described above.

[0065] In one embodiment, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a rapid simplified analysis program for the stability of a soil-rock mixture slope. When the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by a processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described above.

[0066] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile storage medium. When executed, the computer program can include the processes in the above-described method embodiments. Any reference to memory, storage, database, or other media used in the various embodiments provided herein may include both non-volatile and volatile memory.

[0067] In summary, the present invention provides a method, system, terminal, and storage medium for rapid and simplified analysis of the stability of a soil-rock mixture slope, including: determining model parameters of a rapid and simplified analysis model for the stability of a soil-rock mixture slope based on soil-rock mixture strength criteria and parameters obtained from indoor tests; obtaining slope dimension information collected from on-site surveys and field projects; calculating the safety factor of a pure clay slope based on the limit equilibrium method according to the slope dimension information; substituting the model parameters, rock content, and the safety factor of the pure clay slope into the rapid and simplified analysis model for the stability of a soil-rock mixture slope, and solving and outputting the safety factor of the soil-rock mixture slope. The present invention proposes a simple and practical method for calculating the safety factor of a soil-rock mixture slope, which can achieve rapid and accurate assessment of the stability of a soil-rock mixture slope under a wide range of rock content conditions based on only a small number of indoor tests, providing a theoretical basis for disaster analysis and disaster prevention and mitigation design, effectively improving engineering efficiency, and ensuring infrastructure safety.

[0068] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A rapid and simplified analysis method for soil-rock mixed slope stability, characterized by: include: Determine the model parameters of the soil-rock mixture slope stability rapid simplified analysis model based on the soil-rock mixture strength criterion and the parameters obtained from laboratory tests; Obtain slope dimension information collected from on-site surveys and field projects; Calculating the safety factor of the pure clay slope based on the limit equilibrium method according to the slope size information; The model parameters, rock content and the safety factor of the pure clay slope are substituted into the soil-rock mixed slope stability rapid simplified analysis model to solve and output the soil-rock mixed slope safety factor.

2. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 1 is characterized in that: The model parameters of the soil-rock mixture slope stability rapid simplified analysis model determined based on the soil-rock mixture strength criterion and the parameters obtained from the indoor test include: Based on the soil strength parameters determined by indoor tests and the soil-rock mixture strength criterion based on the stone reinforcement effect, structural parameters were calibrated to describe the evolution of the internal structure and mechanical properties of the soil-rock mixture with changes in stone content.

3. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 2 is characterized in that: The soil strength parameters determined based on indoor tests and the soil-rock mixture strength criterion based on the stone reinforcement effect are calibrated to obtain structural parameters that describe the evolution of the internal structure and mechanical properties of the soil-rock mixture as the stone content changes, including: The peak stress ratios of soil-rock mixture and pure clay matrix were obtained through triaxial indoor tests. M and M m , we can get the nonlinear relationship between the peak stress ratio and the stone volume fraction: ； in, and are the peak stress ratios of the soil-rock mixture and the pure clay matrix, 、 are the shear stress and effective average normal stress of the soil-rock mixture, 、 are the shear stress and effective average normal stress of the pure clay matrix, respectively; ψ a is the stone volume fraction; μ 1 is the structural variable used for the structural evolution process between rocks of soil-rock mixture under unit conditions; μ The change of 1 can be expressed by the following power function: ； in, χ 1 represents the structural variable μ 1. Structural parameters that are sensitive to stone content and are related to the particle shape and gradation distribution characteristics of the stone body; ψ th is the limiting stone volume fraction, which is directly calculated from the basic properties of the stone body: ； in, e min is the minimum porosity ratio, corresponding to the densest packing state of the stone skeleton; According to the peak stress ratio of the soil-rock mixture and the pure clay matrix M and M m , fitting to determine the structural variables μ 1. And calibrate the structural parameters χ 1.

4. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 1 is characterized in that: The acquisition of slope dimension information collected from on-site surveys and field projects includes: Obtaining slope height during field surveys H and slope α , and obtain the slope size information.

5. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 1 is characterized in that: The calculation of the safety factor of the pure clay slope based on the limit equilibrium method according to the slope size information includes: Based on the limit equilibrium method, the safety factor of the pure clay slope is calculated using the following formula: ； in, W i is the soil gravity, l is the width of the assumed soil strip, c is the cohesion of pure clay matrix, φ is the internal friction angle of pure clay matrix, α i is the angle between the tangent line of the soil strip sliding arc segment and the horizontal line, the coefficient m ai for: ； Perform iterative calculations and start with F sm =1, iterate until the result converges.

6. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 5 is characterized in that: The cohesion of the pure clay matrix c and the internal friction angle of the pure clay matrix φ Obtained through direct shear or triaxial tests.

7. The rapid and simplified analysis method for soil-rock mixed slope stability according to claim 1 is characterized in that: Substituting the model parameters, rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model to solve and output the safety factor of the soil-rock mixed slope includes: Substitute the model parameters, the rock content, and the safety factor of the pure clay slope into the soil-rock mixed slope stability rapid simplified analysis model, and calculate the safety factor of the soil-rock mixed slope according to the following formula: ； in, F s is the safety factor of the soil-rock mixed slope.

8. A rapid and simplified analysis system for soil-rock mixed slope stability, characterized by: include: A model parameter determination module is used to determine the model parameters of a rapid simplified analysis model for soil-rock mixture slope stability based on soil-rock mixture strength criteria and parameters obtained from laboratory tests; The slope dimension acquisition module is used to obtain slope dimension information collected from on-site surveys and field projects; A pure clay slope safety factor calculation module is used to calculate the pure clay slope safety factor based on the limit equilibrium method according to the slope size information; The soil-rock mixed slope safety factor solving module is used to substitute the model parameters, rock content and the pure clay slope safety factor into the soil-rock mixed slope stability rapid simplified analysis model, solve and output the soil-rock mixed slope safety factor.

9. A terminal, characterized in that: include: A processor and a memory, wherein the memory stores a rapid simplified analysis program for the stability of a soil-rock mixture slope, and when the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by the processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a rapid simplified analysis program for the stability of a soil-rock mixture slope. When the rapid simplified analysis program for the stability of a soil-rock mixture slope is executed by a processor, it is used to implement the operation of the rapid simplified analysis method for the stability of a soil-rock mixture slope as described in any one of claims 1 to 7.

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