Evaluation method of sliding surface stress calculation result and test verification device thereof

Abstract

The invention provides an evaluation method of a sliding surface stress calculation result and a test verification device thereof, and relates to the technical field of sliding surface stress test verification, and the method comprises the steps: obtaining the geological information of a landslide and the parameter information of a slip mass and a slip zone, obtaining the model parameter information of a landslide experiment model through the similarity theory processing, and constructing the experiment model. Stress data of the sliding surface are obtained through a test, a stress result of the sliding surface is calculated according to a preset stress calculation formula, and finally the calculation result is evaluated. The test verification device comprises an angle adjusting structure, a bottom seepage structure and a stress testing structure which are arranged in a model box, and accurate measurement and verification of sliding surface stress are achieved through various sensors and structural assemblies. According to the method and the device, the accuracy of sliding surface stress calculation is effectively improved, and reliable technical support is provided for landslide stability analysis.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental verification of sliding surface stress, and in particular to an evaluation method for sliding surface stress calculation results and an experimental verification device thereof. Background Art

[0002] my country is a country with frequent geological disasters such as landslides, collapses, and mud-rock flows. Among them, landslides are often sudden, high-frequency, and destructive. They are recognized as the second largest natural disaster after earthquakes, and one of the most extensive, most destructive, and longest geological disasters faced by humans. With the development of engineering construction towards more complex geological conditions, it is inevitable to encounter more and more complex engineering landslides. With the changes in natural environmental conditions, more natural landslides have revived and become disasters. According to statistics, since the 1980s, large-scale landslide disasters have occurred almost every year, and they have shown a trend of worsening year by year. Frequent landslide disasters have caused huge casualties and property losses.

[0003] The stability of landslides has always been one of the most basic but most important research topics in the field of landslide disasters. There are many methods available to calculate the stress of landslide sliding surfaces, including a large number of theoretical methods and numerical methods. However, no one has verified the accuracy of the calculation results of these methods, nor has there been any applicable and accurate experimental means to verify them.

[0004] Therefore, there is an urgent need for an evaluation method for sliding surface stress calculation results and a test verification device thereof for accurately testing the normal stress and shear stress at the sliding surface position of the landslide, and thereby evaluating the accuracy of the calculation results of the sliding surface stress calculation method. Summary of the invention

[0005] The purpose of the present invention is to provide an evaluation method for sliding surface stress calculation results and a test verification device thereof to improve the above-mentioned problem. In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present application provides a method for evaluating sliding surface stress calculation results, comprising:

[0007] Acquiring first information, wherein the first information includes geological information of the landslide, parameter information of the sliding body, and parameter information of the sliding belt;

[0008] Processing the first information based on similarity theory to obtain model parameter information of the landslide experimental model;

[0009] Constructing a landslide experimental model based on model parameter information of the landslide experimental model, and conducting an experiment based on preset experimental data to obtain sliding surface stress data of the landslide experimental model;

[0010] Calculating the preset experimental data according to a preset sliding surface stress calculation formula to obtain a sliding surface stress calculation result of the landslide experimental model;

[0011] The sliding surface stress calculation result of the landslide experimental model is evaluated based on the sliding surface stress data of the landslide experimental model to obtain an evaluation result of the sliding surface stress calculation result of the landslide experimental model.

[0012] In a second aspect, the present application also provides a test verification device for verifying an evaluation method of a sliding surface stress calculation result, comprising:

[0013] A model box, wherein the model box is configured as a rectangular parallelepiped structure, and a cavity is provided in the model box;

[0014] An angle adjustment structure, wherein the angle adjustment structure is disposed in the cavity;

[0015] A bottom seepage structure, wherein the bottom seepage structure is arranged on the angle adjustment structure, and the bottom seepage structure is arranged in a box-shaped structure;

[0016] A stress testing structure is fixedly arranged on the lower surface of the bottom seepage structure.

[0017] The beneficial effects of the present invention are:

[0018] The present invention obtains detailed landslide geological information and parameter information of sliding bodies and sliding belts, and processes this information based on similarity theory to obtain model parameters of the landslide experimental model, thereby constructing an accurate experimental model. The experimental data obtained through this model not only truly reflects the stress situation of the actual landslide, but also can obtain accurate sliding surface stress results through calculation formulas, providing a scientific basis for landslide prevention and control. Among them, the present invention adopts additional stress calculation formulas for slope tangential resistance and vertical resistance, which not only considers the local stress state of any point in the model, but also comprehensively considers the stress state of the entire experimental model. This multi-angle and multi-dimensional stress analysis method can more comprehensively evaluate the stress distribution of the landslide sliding surface and avoid the deviation that may be caused by a single stress calculation. The present invention can also accurately capture the stress changes on the sliding surface through the combination of the first slider, the second slider and the pressure sensor, and provide high-precision stress data to support the verification of the sliding surface stress calculation results. The sliding surface stress calculation result evaluation method and verification device of the present invention are not only applicable to landslide experimental models of various sizes, but can also be applied to landslide stress analysis under different geological environments by adjusting structures and parameters. This wide applicability enhances the application value of the present invention in actual engineering.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic flow chart of a method for evaluating the sliding surface stress calculation result described in an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the main structure of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present invention;

[0024] Figure 4 It is a side structural schematic diagram of a test verification device for the evaluation method of the sliding surface stress calculation result described in an embodiment of the present invention;

[0025] Figure 5 It is a bottom-up structural schematic diagram of a test verification device for the evaluation method of the sliding surface stress calculation result described in an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the stress test structure of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present invention.

[0027] In the figure: 1, model box; 2, column; 3, first through hole; 4, combination plate; 5, fixing rod; 6, second through hole; 7, permeable stone; 8, infiltration port; 9, first slider; 10, second slider; 11, base; 12, first pressure sensor; 13, second pressure sensor; 14, support column; 15, third through hole; 16, first groove; 17, second groove; 18, ball bearing. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] Embodiment 1:

[0031] This embodiment provides a method for evaluating sliding surface stress calculation results.

[0032] See also Figure 1 , the figure shows that the method includes step S100, step S200, step S300, step S400 and step S500.

[0033] Step S100, obtaining first information, wherein the first information includes geological information of the landslide, parameter information of the sliding body, and parameter information of the sliding belt;

[0034] It is understandable that the geological information of landslides includes stratigraphic structure, lithology type, fault and joint distribution, hydrogeological conditions, etc. These data are helpful to understand the geological background and potential triggering mechanism of landslides. The parameter information of the sliding body involves the physical properties of the landslide body, such as volume, shape, density, friction coefficient, etc. These parameters are used to accurately describe the dynamic behavior of the landslide body. The parameter information of the sliding belt includes the geometry, inclination, material properties and stability characteristics of the sliding surface, etc., which directly affect the distribution and transmission of stress during sliding. By systematically collecting and analyzing these first information, a scientific basis can be provided for the subsequent construction of experimental models based on similarity theory, ensuring that the experimental model is highly consistent with the actual landslide in terms of physical and mechanical properties. This not only improves the accuracy and reliability of stress calculation results, but also lays a solid data foundation for further analysis and evaluation of sliding surface stress, thereby achieving a comprehensive assessment of landslide stability and effective early warning.

[0035] Step S200: Processing the first information based on similarity theory to obtain model parameter information of the landslide experimental model;

[0036] It is understandable that this step, when processing the first information, first determines the similarity ratio according to the similarity theory, such as the length similarity ratio, the time similarity ratio, the force similarity ratio, etc. These proportional relationships are used to reduce or expand the geological information, sliding body parameters and sliding belt parameters of the actual landslide to adapt the size and experimental conditions of the experimental model. Then, according to these similarity ratios, the geological information, sliding body parameter information and sliding belt parameter information of the landslide are quantified. For example, physical parameters such as the volume and density of the landslide will be scaled according to the similarity ratio, so as to obtain the geometric dimensions and material properties of the experimental model. In addition, considering the difference between the laboratory environment and the actual terrain environment, it is also necessary to adjust the external conditions in the experimental model, such as gravity, friction and hydrological conditions, to ensure that the experimental model can truly reflect the stress distribution and mechanical process in the actual landslide.

[0037] This processing method based on similarity theory can ensure that the model parameter information of the landslide experimental model matches the actual landslide height, so that in subsequent experiments, the collection of sliding surface stress data and the evaluation of calculation results have higher accuracy and credibility. This method effectively simplifies complex field conditions into an operational model in the laboratory while retaining key mechanical characteristics, ultimately providing a scientific basis for landslide risk assessment and disaster prevention and mitigation.

[0038] Step S300: constructing a landslide experimental model based on the model parameter information of the landslide experimental model, and conducting an experiment based on preset experimental data to obtain sliding surface stress data of the landslide experimental model;

[0039] It can be understood that this step constructs a landslide experimental model based on the model parameter information obtained in the previous step. This process includes the precise manufacture of the geometric shape of the experimental model, the selection of materials, and the setting of mechanical parameters to ensure that the structure and mechanical properties of the model remain similar to the actual landslide situation. For example, key parameters such as the shape, density, and material strength of the landslide body must be strictly controlled according to the proportional relationship of the similarity theory. At the same time, experimental devices such as model boxes, angle adjustment structures, and stress test structures must also be carefully designed and assembled to accurately simulate the stress and deformation state of the actual landslide.

[0040] After the experimental model is built, the experimental operation based on the preset experimental data is carried out. The preset experimental data usually includes the landslide triggering conditions (such as rainfall, earthquake intensity, etc.), external loading conditions (such as gravity, lateral pressure, etc.) and the initial state of the landslide under experimental conditions. These data will be used as experimental input to trigger the landslide movement in the experimental model. During the experiment, the inclination angle of the landslide body is changed by the angle adjustment structure, and the stress test structure is used to monitor the stress changes on the sliding surface during the sliding of the landslide body in real time.

[0041] The sliding surface stress data obtained in the experiment, including normal stress and shear stress, can reflect the stress distribution characteristics of the experimental model during sliding. These data can not only help analyze the triggering mechanism and sliding process of the landslide, but also provide a real and effective reference for the evaluation of subsequent sliding surface stress calculation results.

[0042] The technical effect of this process is that, through precise experimental model construction and reasonable experimental design, the stress changes in the actual landslide process can be truly simulated. The sliding surface stress data obtained from the experiment is highly accurate and authentic, providing strong support for the verification and optimization of the sliding surface stress calculation method, and also providing a reliable data basis for landslide risk assessment.

[0043] Step S400, calculating the preset experimental data according to a preset sliding surface stress calculation formula to obtain a sliding surface stress calculation result of the landslide experimental model;

[0044] It is understandable that this step can intuitively reflect the stress change trend and stress concentration area of ​​the landslide body during the sliding process by converting the experimental data into the sliding surface stress calculation results. These calculation results can not only verify the accuracy of the experimental model, but also provide a quantitative basis for the subsequent sliding surface stress evaluation. Through accurate calculations, the dynamic mechanism of the landslide can be better understood, and scientific support can be provided for the formulation of landslide prevention and control measures. Among them, step S400 includes step S401, step S402, step S403 and step S404.

[0045] Step S401, based on a preset additional stress calculation formula under the slope tangential resistance, calculate the additional stress under the slope tangential resistance at any point in the experimental model;

[0046] It can be understood that the additional stress calculation formulas preset in this step under the action of the slope tangential resistance are as shown in formula (1), formula (2), formula (3), formula (4), formula (5), formula (6), formula (7) and formula (8):

[0047] σ z =γ z (1)

[0048] σ x =Kγz (2)

[0049] Among them, σ z is the vertical stress, z is the distance between the point to be determined and the ground, σ x is the horizontal stress, γ is the soil density, and K is the lateral pressure coefficient of the soil.

[0050]

[0051]

[0052] Among them, σ x is the horizontal stress, σ z is the vertical stress, τ xz is the tangential stress, Q is the horizontal concentrated force in the half-space, x o is the distance in the x direction from the point of action of the concentrated force, y o is the distance in the y direction from the point of concentrated force, z o is the distance between the point to be determined and the boundary of the half-space, v is the Poisson's ratio of the soil, τ is the circumference, c is the distance between the point of action of the horizontal concentrated force and the boundary of the half-space, and r1 represents the formula The calculated value, R2 represents the formula The calculated value.

[0053]

[0054] Among them, σ x1 represents the additional stress in the x direction generated at any point in the xoz plane of the slope under the action of the tangential resistance; x1 represents the additional stress in the z direction generated at any point in the xoz plane of the slope under the action of the tangential resistance; τ xz1 represents the additional tangential stress generated at any point in the xoz plane of the slope under the action of the tangential resistance; B is the z coordinate of the foot of the slope in the xoz coordinate system; B and C is the value range of the integral along the y direction; σ x is the stress in the x direction, σ z is the stress in z direction, τ xz is the tangential stress; dz and dy are the integral signs. The positive direction of the x-axis of the xoz coordinate system is parallel to the slope surface and points to the slope foot, and the positive direction of the z-axis is perpendicular to the slope surface and points to the inside of the slope.

[0055] Step S402: Based on a preset additional stress calculation formula under the vertical resistance of the slope, the additional stress under the vertical resistance of the slope at any point in the experimental model is calculated;

[0056] It can be understood that the additional stress calculation formulas preset in this step under the vertical resistance of the slope are as shown in formula (9), formula (10), formula (11), formula (12), formula (13) and formula (14):

[0057]

[0058]

[0059] Among them, σ x is the horizontal stress, σ z is the vertical stress, τ xz is the tangential stress, P is the vertical concentrated force in the half-space, x o is the distance in the x direction from the point of action of the concentrated force, y o is the distance in the y direction from the point of concentrated force, z o is the distance between the point to be determined and the boundary of the half-space, v is the Poisson's ratio of the soil, π is the circumference, c is the distance between the point of action of the horizontal concentrated force and the boundary of the half-space, and R1 represents the formula The calculated value, R2 represents the formula The calculated value.

[0060]

[0061] Among them, σ x2 It represents the additional stress in the x direction generated at any point in the xoz plane of the slope under the action of the resistance perpendicular to the slope surface; σ z2 It represents the additional stress in the z direction generated at any point in the xoz plane of the slope under the resistance perpendicular to the slope surface; τ xz2 It represents the additional tangential stress generated at any point in the xoz plane of the slope under the action of the resistance perpendicular to the slope surface; B is the z coordinate of the foot of the slope in the xoz coordinate system; B and yC are the range of values ​​of the integral along the y direction; σ x is the stress in the x direction, σ z is the stress in z direction, τ xz is the tangential stress; dz and dy are the integral signs. The positive direction of the x-axis of the xoz coordinate system is parallel to the slope surface and points to the slope foot, and the positive direction of the z-axis is perpendicular to the slope surface and points to the inside of the slope.

[0062] Step S403, calculating the total additional stress at any point in the experimental model based on the additional stress under the tangential resistance of the slope at any point in the experimental model and the additional stress under the vertical resistance of the slope at any point in the experimental model;

[0063] It can be understood that the calculation formulas for the total additional stress in this step are as shown in formula (15), formula (16), formula (17), formula (18), formula (19), formula (20), formula (21), formula (22) and formula (23):

[0064] σ xf =σ x1 +σ x2 (15)

[0065] σ zf =σ z1 +σ z2 (16)

[0066] τ xzf =τ xz1 +τ xz2 (17)

[0067] Among them, σ x1 represents the additional stress in the x direction generated at any point in the xoz plane of the slope under the action of the tangential resistance; z1 represents the additional stress in the z direction generated at any point in the xoz plane of the slope under the action of the tangential resistance; τ xz1 represents the additional tangential stress generated at any point in the xoz plane of the slope under the action of the tangential resistance; σ x2 It represents the additional stress in the x direction generated at any point in the xoz plane of the slope under the action of the resistance perpendicular to the slope surface; σ z2 It represents the additional stress in the z direction generated at any point in the xoz plane of the slope under the resistance perpendicular to the slope surface; τ xz2 represents the additional tangential stress generated at any point in the xoz plane of the slope under the action of the resistance perpendicular to the slope surface; σ xf is the cumulative additional stress in the x direction, σ zf is the cumulative additional stress in the z direction, τ xzf is the cumulative tangential additional stress. The positive direction of the x-axis of the xoz coordinate system is parallel to the slope surface and points to the slope foot, and the positive direction of the z-axis is perpendicular to the slope surface and points to the inside of the slope.

[0068]

[0069] Among them, σ' xf is xf The additional stress in the x-direction in the new coordinate system after transformation, σ' zf is zf The additional stress in the z direction in the new coordinate system after transformation; τ' xzf is τ xzf The tangential additional stress in the new coordinate system after transformation, σ xf is the cumulative additional stress in the x direction in the original coordinate system, σ zfis the cumulative additional stress in the z direction in the original coordinate system, τ xzf is the cumulative tangential additional stress in the original coordinate system, and θ is the angle of counterclockwise rotation required to transform the original coordinate system into the new coordinate system. The positive direction of the x-axis in the original coordinate system is parallel to the slope surface and points to the slope foot, and the positive direction of the z-axis is perpendicular to the slope surface and points to the slope body; the x-axis in the new coordinate system is horizontal, and the z-axis is vertical.

[0070] σ x =σ' xf +Kγ(x o sinθ+z o cosθ) (21)

[0071] σ z =σ' zf +γ(x o sinβ+z o cosβ) (22)

[0072] τ xz =τ' xzf (twenty three)

[0073] Among them, σ x is the stress in the x direction in the new coordinate system, σ z is the stress in the z direction in the new coordinate system, τ xz is the tangential stress in the new coordinate system, γ is the soil mass, K is the lateral pressure coefficient of the soil, x o is the distance in the x direction from the point to be determined to the point where the concentrated force acts, z o is the distance between the point to be determined and the boundary of the half-space, θ is the counterclockwise rotation angle required to transform the original coordinate system into the new coordinate system, β is the angle between the sliding surface and the horizontal plane, σ' xf is xf The additional stress in the x-direction in the new coordinate system after transformation, σ' zf is zf The additional stress in the z direction in the new coordinate system after transformation; τ' xzf is τ xzf The tangential additional stress in the new coordinate system after conversion. The positive direction of the x-axis in the original coordinate system is parallel to the slope surface and points to the slope foot, and the positive direction of the z-axis is perpendicular to the slope surface and points to the inside of the slope; the x-axis in the new coordinate system is horizontal, and the z-axis is vertical.

[0074] Step S404: Based on the total additional stress at any point in the experimental model and a preset stress state solution formula on the inclined section, the normal stress and shear stress on the sliding surface of the experimental model can be calculated.

[0075] It can be understood that the stress state solution formula on the inclined section preset in this step is as shown in formula (24) and formula (25):

[0076]

[0077] Among them, σ β is the normal stress on the sliding surface, τ β is the shear stress on the sliding surface, σ x is the horizontal stress, σ z is the vertical stress, τ xz is the tangential stress, and β is the angle between the sliding surface and the horizontal plane.

[0078] Step S500: evaluating the sliding surface stress calculation result of the landslide experimental model based on the sliding surface stress data of the landslide experimental model to obtain an evaluation result of the sliding surface stress calculation result of the landslide experimental model.

[0079] It is understandable that in this step, the sliding surface stress data obtained in the experiment is compared in detail with the sliding surface stress calculation results obtained by the calculation formula. This comparison is not limited to simple numerical comparison, but also includes multiple dimensions such as the trend of stress distribution, the correspondence of stress concentration areas, and the dynamic characteristics of stress changes. By comparing the actual stress data with the calculation results point by point, the deviations and deficiencies in the calculation model can be identified, and the causes of these deviations can be analyzed, such as the simplification of model assumptions, the deviation of parameter values, or the difference between experimental conditions and actual working conditions. In the evaluation process, this step can introduce error analysis methods, such as root mean square error, relative error, correlation analysis, etc., to quantitatively evaluate the accuracy of the calculation results. For areas with large deviations, the calculation model can be further analyzed and adjusted, and the calculation formula can be optimized to make it closer to the actual situation. Through comparative analysis, the accuracy and reliability of the sliding surface stress calculation formula used in the landslide experimental model can be effectively evaluated. This evaluation result can guide the improvement of the landslide stress calculation model and provide a more accurate mechanical analysis basis for future landslide prevention and control measures.

[0080] Embodiment 2:

[0081] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment provides a test verification device for verifying the evaluation method of the sliding surface stress calculation result, see Figure 2 The device includes a model box 1, an angle adjustment structure, a bottom permeability structure and a stress testing structure; the model box 1 is set as a rectangular structure, and a cavity is set in the model box 1; the angle adjustment structure is set in the cavity; the bottom permeability structure is set on the angle adjustment structure, and the bottom permeability structure is set as a box-shaped structure; the stress testing structure is fixedly set on the lower surface of the bottom permeability structure.

[0082] It is understandable that these components work together to ensure the stability of the experimental model and the accuracy of the data during the landslide simulation. The rectangular structure of the model box 1 provides the stable environment required for the experiment; the flexibility of the angle adjustment structure allows the landslide model to be adjusted at multiple angles; the bottom seepage structure simulates the influence of actual hydrological conditions, which helps to fully analyze the effect of water on landslide stress; the stress test structure provides accurate stress data to ensure the verification of the calculation results. Through these carefully designed components, the experiment can efficiently and accurately reproduce the mechanical behavior of the landslide, providing reliable data support for the calculation and evaluation of sliding surface stress.

[0083] A column 2 is provided on the side wall of the model box 1 , and at least two first through holes 3 are provided on the column 2 . The first through holes 3 are connected to the angle adjustment structure.

[0084] It can be understood that in the test verification device, the design of the column 2 and at least two first through holes 3 on the side wall of the model box 1 ensures the accurate installation and stability of the angle adjustment structure. These components ensure the reliability of the angle adjustment process by providing solid support and precise connection points, avoiding angle drift or instability that may occur during the experiment. The high strength and stability of the column 2 enable the angle adjustment structure to remain fixed during the experiment, thereby improving the accuracy and reliability of the experimental data. In addition, the design of the through hole 3 allows flexible adjustment of the angle setting to meet the needs of different landslide experimental conditions and provide diverse experimental data for research. This design improves the overall stability and adaptability of the experimental equipment, and lays a solid foundation for the accurate debugging of the landslide model and the reliability of stress data.

[0085] Among them, the angle adjustment structure includes a combination plate 4 and a fixing rod 5, the combination plates 4 are provided with two pieces, the two combination plates 4 are arranged parallel to the column 2, each of the combination plates 4 is provided with a second through hole 6 corresponding to the first through hole 3, and the fixing rod 5 passes through the first through hole 3 and the second through hole 6.

[0086] It is understandable that the angle adjustment structure effectively improves the accuracy and stability of the angle adjustment. By designing the holes, the accuracy of the angle adjustment process is ensured, and the asymmetry or looseness of the connection points is avoided. The fixed rod 5 provides strong support to prevent drift or instability during the angle adjustment process, thereby ensuring the consistency and stability of the angle of the experimental model. At the same time, this design also makes the installation and adjustment of the angle adjustment simple, and researchers can quickly and accurately set different angles of the model to meet various experimental needs. The optimization of this system not only improves the flexibility of the experimental setting, but also provides a solid foundation for the accuracy of the landslide experiment and the reliability of the data.

[0087] The upper top surface of the bottom infiltration structure is paved with permeable stones 7, the lower bottom surface of the bottom infiltration structure is provided with an infiltration port 8, and fillers are provided inside the bottom infiltration structure.

[0088] It is understandable that the design of the bottom seepage structure includes several key elements to simulate the hydrological conditions at the bottom of the actual landslide body. The upper top surface is paved with permeable stones 7, the lower bottom surface is provided with infiltration ports 8, and the interior is filled with fillers, which are sponges or absorbent cotton cloth. This design ensures that the bottom seepage structure can effectively simulate the infiltration environment at the bottom of the landslide body. The permeable stones 7 allow water to pass through the bottom seepage structure, simulating the water flow and infiltration process under natural conditions. The infiltration port 8 is used to control and discharge water, further simulating the water flow at the bottom of the actual landslide body. The setting of the filler helps to simulate the permeability characteristics of soil or other granular materials, which is crucial for analyzing the stability of the landslide model under different hydrological conditions. Overall, this structural design improves the authenticity of the experimental model and the accuracy of the experimental data, allowing researchers to better understand the impact of water on the stability of the landslide body.

[0089] Among them, the stress testing structure includes a first slider 9, a second slider 10, a base 11, a first pressure sensor 12 and a second pressure sensor 13. The first slider 9 is fixedly connected to the bottom of the bottom seepage structure, and the first slider 9 and the second slider 10 are detachably connected. A base 11 is arranged below the first slider 9, and a second slider 10 is arranged between the first slider 9 and the base 11. A second pressure sensor 13 is arranged on the side wall of the base 11, and the force-bearing end of the second pressure sensor 13 is in contact with the second slider 10.

[0090] It is understandable that the first slider 9 is fixedly connected to the bottom of the bottom seepage structure, ensuring the stability and correct positioning of the slider in the experiment. The first slider 9 is detachably connected to the second slider 10, providing a flexible structural configuration to adapt to different test requirements. A base 11 is provided below the first slider 9, which provides additional support for the first slider 9 and ensures the stability of the entire test structure. A second slider 10 is provided between the first slider 9 and the base 11, and this setting allows sliding and adjustment between the sliders to accurately measure stress data. A second pressure sensor 13 is provided on the side wall of the base 11, and the force-bearing end of the second slider 10 is in contact with the second slider 10 for real-time measurement of the stress on the slider. This design enables the stress test structure to effectively measure the stress distribution in the landslide model and provide accurate measurement results for data analysis. The configuration of this structure ensures the data reliability during the test and the accuracy of the experimental results.

[0091] The first sliding block 9 is provided with a supporting column 14 , and the second sliding block 10 is provided with a third through hole 15 , and the third through holes 15 are respectively provided corresponding to the supporting columns 14 .

[0092] It can be understood that in the stress test structure, the support column 14 provided on the first slider 9 corresponds to the third through hole 15 on the second slider 10, which enhances the stability and accuracy of the structure. The support column 14 ensures the stable positioning of the second slider 10 during the test by inserting into the third through hole 15, and prevents the relative displacement or tilt of the slider. This design ensures the precise alignment between the sliders, so that the stress sensor can accurately measure the stress distribution between the sliders, thereby improving the reliability of the test results. At the same time, this configuration allows researchers to flexibly adjust the position of the slider to meet different experimental requirements. In general, the design of the support column 14 and the third through hole 15 optimizes the stability and measurement accuracy of the test structure, and improves the reliability of the experimental data and the flexibility of the test process.

[0093] The top surface of the second sliding block 10 is provided with three first grooves 16 , and three first pressure sensors 12 are provided. The three first sensors are respectively arranged in the three first grooves 16 , and the three first sensors are distributed in a triangle.

[0094] It can be understood that this step improves the accuracy of stress measurement and the reliability of data. The triangular distribution of sensors can evenly capture stress distribution at multiple points on the surface of the slider 10, reducing local stress concentration, thereby providing more accurate measurement data. Through this arrangement, the pressure can be evenly distributed, avoiding data errors caused by uneven pressure, while also allowing cross-validation of measurement results, improving the reliability of test data. This design optimizes the comprehensiveness and accuracy of stress measurement and ensures the accuracy and reliability of experimental data.

[0095] The base 11 is provided with a second groove 17 , and a ball 18 is provided in the second groove 17 . The upper and lower ends of the ball 18 are in contact with the second sliding block 10 and the second groove 17 respectively.

[0096] It can be understood that the above structure effectively reduces the friction between the slider 10 and the base 11, allowing the slider to move and adjust more smoothly during the test. The setting of the ball 18 ensures the smooth operation of the slider, avoids the resistance caused by friction, and improves the accuracy and fluency of the test. At the same time, this design reduces the wear of the equipment, extends the service life, and maintains the consistency of the test accuracy. Overall, this ball configuration optimizes the performance and durability of the stress test structure. The test verification device in the present invention can also be used to test and verify other evaluation methods for verifying the sliding surface stress calculation results, in which data measurement is still performed through the test verification device for verification.

[0097] It should be noted that, regarding the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0099] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for evaluating sliding surface stress calculation results, characterized in that: include: Acquiring first information, wherein the first information includes geological information of the landslide, parameter information of the sliding body, and parameter information of the sliding belt; Processing the first information based on similarity theory to obtain model parameter information of the landslide experimental model; Constructing a landslide experimental model based on model parameter information of the landslide experimental model, and conducting an experiment based on preset experimental data to obtain sliding surface stress data of the landslide experimental model; Calculating the preset experimental data according to a preset sliding surface stress calculation formula to obtain a sliding surface stress calculation result of the landslide experimental model; The sliding surface stress calculation result of the landslide experimental model is evaluated based on the sliding surface stress data of the landslide experimental model to obtain an evaluation result of the sliding surface stress calculation result of the landslide experimental model.

2. The method for evaluating the sliding surface stress calculation result according to claim 1, characterized in that , the preset experimental data is calculated according to the preset sliding surface stress calculation formula to obtain the sliding surface stress calculation result of the landslide experimental model, including: Based on the preset additional stress calculation formula under the slope tangential resistance, the additional stress under the slope tangential resistance at any point in the experimental model is calculated; Based on the preset additional stress calculation formula under the vertical resistance of the slope, the additional stress under the vertical resistance of the slope at any point in the experimental model is calculated; The total additional stress at any point in the experimental model is calculated based on the additional stress under the tangential resistance of the slope at any point in the experimental model and the additional stress under the vertical resistance of the slope at any point in the experimental model; Based on the total additional stress at any point in the experimental model and the preset stress state solution formula on the inclined section, the normal stress and shear stress on the sliding surface of the experimental model can be calculated.

3. A test verification device for verifying the evaluation method of the sliding surface stress calculation result according to any one of claims 1 to 2, characterized in that: include: A model box (1), wherein the model box (1) is configured as a rectangular parallelepiped structure, and a cavity is provided inside the model box (1); An angle adjustment structure, wherein the angle adjustment structure is disposed in the cavity; A bottom seepage structure, wherein the bottom seepage structure is arranged on the angle adjustment structure, and the bottom seepage structure is arranged in a box-shaped structure; A stress testing structure is fixedly arranged on the lower surface of the bottom seepage structure.

4. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 3, characterized in that: A column (2) is provided on the side wall of the model box (1), and at least two first through holes (3) are provided on the column (2), wherein the first through holes (3) are connected to the angle adjustment structure.

5. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 4, characterized in that: The angle adjustment structure comprises a combination plate (4) and a fixing rod (5); the combination plates (4) are provided in two pieces, the two combination plates (4) are arranged parallel to the column (2), each combination plate (4) is provided with a second through hole (6) corresponding to the first through hole (3), and the fixing rod (5) passes through the first through hole (3) and the second through hole (6).

6. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 3, characterized in that: The upper surface of the bottom infiltration structure is paved with permeable stones (7), the lower surface of the bottom infiltration structure is provided with an infiltration port (8), and a filler is provided inside the bottom infiltration structure.

7. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 3, characterized in that: The stress testing structure comprises a first slider (9), a second slider (10), a base (11), a first pressure sensor (12) and a second pressure sensor (13); the first slider (9) is fixedly connected to the bottom of the bottom seepage structure; the first slider (9) and the second slider (10) are detachably connected; a base (11) is arranged below the first slider (9); a second slider (10) is arranged between the first slider (9) and the base (11); a second pressure sensor (13) is arranged on a side wall of the base (11); and a force-bearing end of the second pressure sensor (13) is in contact with the second slider (10).

8. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 7, characterized in that: The first sliding block (9) is provided with a support column (14), and the second sliding block (10) is provided with a third through hole (15), and the third through holes (15) are respectively provided corresponding to the support columns (14).

9. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 7, characterized in that: The second sliding block (10) is provided with three first grooves (16) on its upper top surface, and three first pressure sensors (12) are provided. The three first sensors are respectively arranged in the three first grooves (16), and the three first sensors are distributed in a triangle.

10. The test verification device for the evaluation method of sliding surface stress calculation results according to claim 7, characterized in that: The base (11) is provided with a second groove (17), a ball (18) is provided in the second groove (17), and the upper and lower ends of the ball (18) are in contact with the second sliding block (10) and the second groove (17) respectively.

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