Method for evaluating results of calculation of stress on sliding surface and test verification device thereof

Abstract

The application provides an evaluation method for sliding surface stress calculation results and a test verification device thereof, relates to the technical field of test verification of sliding surface stress, and the method comprises the following steps: obtaining geological information of a landslide, parameter information of a sliding body and a sliding zone, obtaining model parameter information of a landslide experiment model through a similarity theory, and constructing an experiment model. Sliding surface stress data are obtained through an experiment, sliding surface stress results are calculated according to a preset stress calculation formula, and finally, the calculation results are evaluated. The test verification device comprises an angle adjusting structure, a bottom infiltration structure and a stress testing structure arranged in the model box, and through various sensors and structural components, the accurate measurement and verification of the sliding surface stress are realized. The method and the device effectively improve the accuracy of the calculation of the sliding surface stress and provide reliable technical support for the stability analysis of the landslide.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test verification of sliding surface stress, in particular to a sliding surface stress calculation result evaluation method and a test verification device thereof. BACKGROUND

[0002] The stability problem of landslide has been a basic but most important research topic in the field of landslide disaster. There are many existing methods for calculating the sliding surface stress of landslide, and there are many theoretical methods and numerical means, but no one has verified the accuracy of the calculation results of these methods, and there is no suitable and accurate test method to verify it.

[0003] Therefore, there is an urgent need for a sliding surface stress calculation result evaluation method and a test verification device thereof for accurately testing the normal stress and shear stress of the sliding surface position of landslide, and evaluating the accuracy of the calculation results of the sliding surface stress calculation method. SUMMARY

[0004] The purpose of the present application is to provide a sliding surface stress calculation result evaluation method and a test verification device thereof to improve the above problems. In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] In a first aspect, the present application provides a sliding surface stress calculation result evaluation method, comprising:

[0006] Obtaining first information, the first information comprising geological information of landslide, parameter information of sliding body and parameter information of sliding zone;

[0007] Processing the first information based on the similarity theory to obtain model parameter information of a landslide experiment model;

[0008] Constructing a landslide experiment model based on the model parameter information of the landslide experiment model, and performing a test based on preset experimental data, to obtain sliding surface stress data of the landslide experiment model;

[0009] Calculating the preset experimental data according to a preset sliding surface stress calculation formula to obtain the sliding surface stress calculation result of the landslide experiment model;

[0010] Evaluating the sliding surface stress calculation result of the landslide experiment model based on the sliding surface stress data of the landslide experiment model to obtain the evaluation result of the sliding surface stress calculation result of the landslide experiment model.

[0011] In a second aspect, the present application further provides a test verification device for verifying the evaluation method of the sliding surface stress calculation result, comprising:

[0012] A model box is provided in a cuboid structure, and a cavity is arranged in the model box;

[0013] An angle adjustment structure is arranged in the cavity;

[0014] A bottom infiltration structure is arranged on the angle adjustment structure, and the bottom infiltration structure is arranged as a box-shaped structure;

[0015] A stress test structure is fixedly arranged on the lower surface of the bottom infiltration structure.

[0016] The present application has the following beneficial effects:

[0017] The present application obtains detailed landslide geological information and parameter information of a sliding body and a sliding zone, processes the information based on a similarity theory, obtains model parameters of a landslide experiment model, and thus constructs an accurate experiment model. Experimental data obtained through the model not only truly reflect stress conditions of an actual landslide, but also obtain accurate sliding surface stress results through a calculation formula, thereby providing a scientific basis for landslide prevention. In the present application, an additional stress calculation formula of a slope tangent resistance and a vertical resistance is used, which not only considers a local stress state of an arbitrary point in the model, but also comprehensively considers a stress state of the entire experiment model. This multi-angle and multi-dimensional stress analysis method can more comprehensively evaluate stress distribution of a landslide sliding surface and avoid deviation caused by a single stress calculation. The present application also uses a combination of a first sliding block, a second sliding block and a pressure sensor to accurately capture stress changes on the sliding surface and provide high-precision stress data to support verification of the sliding surface stress calculation result. The sliding surface stress calculation result evaluation method and the verification device thereof are not only suitable for landslide experiment models of various scales, but also can be applied to landslide stress analysis in different geological environments by adjusting structures and parameters. This wide applicability enhances the application value of the present application in actual engineering.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application according to the embodiments. The objects and other advantages of the present application will be realized and achieved by means of the structures particularly pointed out in the written description and claims, and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1A flow chart of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application;

[0021] Figure 2 A perspective view of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application;

[0022] Figure 3 A front view of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application;

[0023] Figure 4 A side view of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application;

[0024] Figure 5 A bottom view of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application;

[0025] Figure 6 A stress test structure diagram of the test verification device of the evaluation method of the sliding surface stress calculation result described in the embodiment of the present application.

[0026] In the figure: 1, model box; 2, stand; 3, first through hole; 4, combined plate; 5, fixed rod; 6, second through hole; 7, water permeable stone; 8, infiltration port; 9, first sliding block; 10, second sliding block; 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. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0028] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1:

[0030] The present embodiment provides an evaluation method for stress calculation results of a sliding surface.

[0031] Referring to Figure 1 , the present method includes steps S100, S200, S300, S400 and S500.

[0032] Step S100, acquiring first information, the first information including geological information of the landslide, parameter information of the sliding body and parameter information of the sliding zone;

[0033] It can be understood that the geological information of the landslide includes stratum structure, lithology type, fault and joint distribution, hydrogeological condition, etc., which helps to understand the geological background and potential triggering mechanism of the landslide. The parameter information of the sliding body involves the volume, shape, density, friction coefficient and other physical characteristics of the landslide body, which are used to accurately describe the dynamic behavior of the landslide body. The parameter information of the sliding zone includes the geometric shape, inclination angle, material properties and stability characteristics of the sliding surface, which directly affect the stress distribution and transmission during sliding. By systematically collecting and analyzing these first information, scientific basis can be provided for subsequent experimental model construction based on similarity theory, ensuring that the experimental model has high consistency with the actual landslide in terms of physical and mechanical properties. This not only improves the accuracy and reliability of the stress calculation results, but also lays a solid data foundation for further analysis and evaluation of the stress on the sliding surface, thereby achieving comprehensive evaluation and effective early warning of the stability of the landslide.

[0034] Step S200, processing the first information based on similarity theory to obtain model parameter information of the landslide experimental model;

[0035] It can be understood that in this step, when processing the first information, first, the similarity ratio is determined according to the similarity theory, such as length similarity ratio, time similarity ratio, force similarity ratio, etc. These proportional relationships are used to reduce or enlarge the geological information, landslide body parameters and landslide zone parameters of the actual landslide to adapt to the size and experimental conditions of the experimental model. Then, according to these similarity ratios, the geological information, landslide body parameter information and landslide zone parameter information of the landslide are quantitatively processed. For example, the physical parameters such as landslide volume and density will be scaled according to the similarity ratio, so as to obtain the geometric size and material properties of the experimental model. In addition, considering the difference between the laboratory environment and the actual terrain environment, the external conditions in the experimental model, such as gravity, friction and hydrological conditions, also need to be adjusted to ensure that the experimental model can truly reflect the stress distribution and mechanical process in the actual landslide.

[0036] Through this processing method based on similarity theory, it can be ensured that the model parameter information of the landslide experimental model is highly matched with the actual landslide, so that in the subsequent experiment, the collection of sliding surface stress data and the evaluation of calculation results have higher precision and credibility. This method effectively simplifies the complex field working conditions into an operable model in the laboratory while retaining the key mechanical characteristics, ultimately providing a scientific basis for landslide risk assessment and disaster prevention and mitigation.

[0037] Step S300, constructing a landslide experimental model based on the model parameter information of the landslide experimental model, and performing a test based on preset experimental data, the test obtaining sliding surface stress data of the landslide experimental model;

[0038] It can be understood that this step constructs a landslide experimental model according to the model parameter information obtained in the previous step. This process includes accurately manufacturing the geometric shape of the experimental model, selecting materials and setting mechanical parameters to ensure that the structure and mechanical properties of the model are similar to the actual landslide situation. For example, key parameters such as the shape, density and material strength of the landslide body need to 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 testing structures also need to be carefully designed and assembled to accurately simulate the stress and deformation state of the actual landslide.

[0039] After the experimental model is built, a test operation based on preset experimental data is performed. The preset experimental data usually includes 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 body under experimental conditions. These data will be used as experimental input to trigger the landslide movement in the experimental model. During the experiment, the angle adjustment structure is used to change the inclination angle of the landslide body, and the stress testing structure is used to monitor the stress change on the sliding surface during the sliding process of the landslide body in real time.

[0040] The sliding surface stress data obtained in the experiment, including normal stress and shear stress, can reflect the stress distribution characteristics during the sliding process of the experimental model. These data can not only help analyze the triggering mechanism and sliding process of the landslide, but also provide real and effective reference for the evaluation of subsequent sliding surface stress calculation results.

[0041] The technical effect of this process is that, through accurate experimental model construction and reasonable experimental design, the stress change during the actual landslide process can be truly simulated. The sliding surface stress data obtained by the experiment has high accuracy and authenticity, which provides strong support for the verification and optimization of the sliding surface stress calculation method, and also provides a reliable data basis for landslide risk assessment.

[0042] Step S400, calculating the preset experimental data according to the preset sliding surface stress calculation formula to obtain the sliding surface stress calculation result of the landslide experimental model;

[0043] It can be understood 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 result. These calculation results can not only verify the accuracy of the experimental model, but also provide quantitative basis for subsequent sliding surface stress evaluation. Through accurate calculation, the dynamics mechanism of the landslide can be better understood, and scientific support can be provided for the formulation of landslide prevention measures. Step S400 includes step S401, step S402, step S403 and step S404.

[0044] Step S401, based on the preset additional stress calculation formula under the action of slope tangential resistance, the additional stress of any point in the experimental model under the action of slope tangential resistance is calculated;

[0045] It can be understood that the preset additional stress calculation formula under the action of slope tangential resistance in this step is as shown in formula (1), formula (2), formula (3), formula (4), formula (5), formula (6), formula (7) and formula (8):

[0046] (1)

[0047] (2)

[0048] Wherein, is the vertical stress, is the distance from the ground to the point to be solved, is the horizontal stress, is the unit weight of soil, is the lateral pressure coefficient of soil.

[0049] (3)

[0050] (4)

[0051] (5)

[0052] in, For horizontal stress, For vertical stress, For tangential stress, It is a concentrated force acting horizontally within the half-space. The distance of the point to be determined from the point of application of the concentrated force is... Distance in direction The distance of the point to be determined from the point of application of the concentrated force is... Distance in direction Let be the distance from the point to be determined to the boundary of the half-space. Poisson's ratio of soil Pi The distance from the point of application of the horizontal concentrated force to the boundary of the half-space volume. Formula The calculated value, Formula The calculated value.

[0053]

[0054]

[0055]

[0056] in, This indicates the slope body under tangential resistance. Additional stress in the x-direction generated at any point in the plane; This indicates the slope body under tangential resistance. Additional stress in the z-direction generated at any point in the plane; This indicates the slope body under tangential resistance. Additional tangential stress generated at any point in the plane; for coordinate system downhill foot coordinate; and For along The range of values ​​for the directional integral; For stress in the x-direction, For stress in the z-direction, Tangential stress; and The symbol is for integration. In the xoz coordinate system, the positive x-axis is parallel to the slope surface and points to the toe of the slope, and the positive z-axis is perpendicular to the slope surface and points into the slope body.

[0057] Step S402: Based on the preset formula for calculating the additional stress under the vertical resistance of the slope, calculate the additional stress at any point in the experimental model under the vertical resistance of the slope.

[0058] It is understandable that the formulas for calculating the additional stress under the vertical resistance of the slope in this step are as shown in formulas (9), (10), (11), (12), (13), and (14):

[0059] (9)

[0060] (10)

[0061] (11)

[0062] in, For horizontal stress, For vertical stress, For tangential stress, This refers to the concentrated vertical force within the half-space. The distance of the point to be determined from the point of application of the concentrated force is... Distance in direction The distance of the point to be determined from the point of application of the concentrated force is... Distance in direction Let be the distance from the point to be determined to the boundary of the half-space. Poisson's ratio of soil Pi The distance from the point of application of the horizontal concentrated force to the boundary of the half-space volume. Formula The calculated value, Formula The calculated value.

[0063]

[0064]

[0065]

[0066] in, This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional stress in the x-direction generated at any point in the plane; This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional stress in the z-direction generated at any point in the plane; This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional tangential stress generated at any point in the plane; for coordinate system downhill foot coordinate; and For along The range of values ​​for the directional integral; For stress in the x-direction, For stress in the z-direction, Tangential stress; and The symbol is for integration. In the xoz coordinate system, the positive x-axis is parallel to the slope surface and points to the toe of the slope, and the positive z-axis is perpendicular to the slope surface and points into the slope body.

[0067] Step S403: Calculate 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.

[0068] It is understandable that the formulas for calculating the total additional stress in this step are as shown in formulas (15), (16), (17), (18), (19), (20), (21), (22), and (23):

[0069]

[0070]

[0071]

[0072] in, This indicates the slope body under tangential resistance. Additional stress in the x-direction generated at any point in the plane; This indicates the slope body under tangential resistance. Additional stress in the z-direction generated at any point in the plane; This indicates the slope body under tangential resistance. Additional tangential stress generated at any point in the plane; This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional stress in the x-direction generated at any point in the plane; This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional stress in the z-direction generated at any point in the plane; This indicates the resistance force acting perpendicular to the slope surface within the slope body. Additional tangential stress generated at any point in the plane; To accumulate additional stress in the x-direction, To accumulate additional stress in the z-direction, This represents the cumulative tangential additional stress. In the xoz coordinate system, the positive x-axis is parallel to the slope surface and points towards the toe of the slope, while the positive z-axis is perpendicular to the slope surface and points into the slope body.

[0073]

[0074]

[0075]

[0076] in, for Additional stress in the x-direction under the transformed new coordinate system for Additional stress in the z-direction under the transformed new coordinate system; for Additional tangential stress in the new coordinate system after transformation The cumulative additional stress in the x-direction under the original coordinate system. The cumulative additional stress in the z-direction under the original coordinate system. This represents the cumulative tangential additional stress in the original coordinate system. This represents the counterclockwise rotation required to transform the original coordinate system into the new coordinate system. In the original coordinate system, the positive x-axis is parallel to the slope surface and points towards the foot of the slope, while the positive z-axis is perpendicular to the slope surface and points into the slope body. In the new coordinate system, the x-axis is horizontal, and the z-axis is vertical.

[0077]

[0078]

[0079]

[0080] in, The stress in the x-direction under the new coordinate system. For the stress in the z-direction under the new coordinate system, For the tangential stress in the new coordinate system, The soil weight, Let be the lateral pressure coefficient of the soil. The distance of the point to be determined from the point of application of the concentrated force is... Distance in direction Let be the distance from the point to be determined to the boundary of the half-space. This represents the counterclockwise rotation required to transform the original coordinate system into the new coordinate system. The angle between the sliding surface and the horizontal plane. for Additional stress in the x-direction under the transformed new coordinate system for The additional stress in the z direction in the converted new coordinate system; For The additional stress in the tangential direction in the converted new coordinate system. Wherein the positive direction of the x axis of 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.

[0081] Step S404, based on the total additional stress of any point in the experimental model and the stress state solving formula on the preset oblique section, the normal stress and shear stress on the sliding surface of the experimental model can be calculated.

[0082] It can be understood that the stress state solving formula on the preset oblique section in this step is shown in formula (24) and formula (25):

[0083]

[0084]

[0085] Wherein, is the normal stress on the sliding surface, is the shear stress on the sliding surface, is the horizontal stress, is the vertical stress, is the tangential stress, is the angle between the sliding surface and the horizontal plane.

[0086] Step S500, based on the sliding surface stress data of the landslide experimental model, the sliding surface stress calculation result of the landslide experimental model is evaluated, and the evaluation result of the sliding surface stress calculation result of the landslide experimental model is obtained.

[0087] It can be understood that in this step, the sliding surface stress data obtained in the experiment is compared in detail with the sliding surface stress calculation result obtained by the calculation formula. Such comparison is not limited to simple numerical comparison, but also includes stress distribution trend, stress concentration area correspondence and stress change dynamic characteristics and other multiple dimensions. By comparing the actual stress data with the calculation result point by point, the deviation and deficiency in the calculation model can be identified, and the causes of these deviations are analyzed, such as the simplification of model assumption, the deviation of parameter value 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 result. For the area with large deviation, 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 precision 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 more accurate mechanical analysis basis for future landslide prevention measures.

[0088] Embodiment 2:

[0089] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the embodiment provides a test verification device for verifying the evaluation method of the sliding surface stress calculation result, see Figure 2 The device comprises a model box 1, an angle adjustment structure, a bottom infiltration structure and a stress test structure; the model box 1 is provided in a cuboid structure, and a cavity is arranged in the model box 1; the angle adjustment structure is arranged in the cavity; the bottom infiltration structure is arranged on the angle adjustment structure, and the bottom infiltration structure is provided in a box-shaped structure; and the stress test structure is fixedly arranged on the lower surface of the bottom infiltration structure.

[0090] It can be understood that these components work together to ensure the stability of the experimental model during the simulation of the landslide process and the accuracy of the data. The cuboid structure of the model box 1 provides a stable environment required for the experiment; the flexibility of the angle adjustment structure allows for multi-angle adjustment of the landslide model; the bottom infiltration structure simulates the influence of actual hydrological conditions, which helps to comprehensively analyze the effect of water on landslide stress; and the stress test structure provides accurate stress data, ensuring the verification of the calculation result. Through these carefully designed components, the experiment can efficiently and accurately reproduce the mechanical behavior of landslides, providing reliable data support for the calculation and evaluation of sliding surface stress.

[0091] The side wall of the model box 1 is provided with a stand 2, and at least two first through holes 3 are arranged on the stand 2, and the first through holes 3 are connected with the angle adjustment structure.

[0092] It can be understood that in the test verification device, the design of the stand 2 on the side wall of the model box 1 and the at least two first through holes 3 ensures the accurate installation and stability of the angle adjustment structure. These components provide strong support and precise connection points, ensuring the reliability of the angle adjustment process and avoiding angle drift or instability that may occur during the experiment. The high strength and stability of the stand 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 holes 3 allows for flexible adjustment of the angle setting, meeting the needs of different landslide experimental conditions and providing diversified experimental data for research. This design improves the overall stability and adaptability of the experimental equipment, laying a solid foundation for the precise adjustment of the landslide model and the reliability of the stress data.

[0093] The angle adjusting structure includes a combination plate 4 and a fixed rod 5. The combination plate 4 is provided with two plates, which are arranged in parallel with the stand 2. Each combination plate 4 is provided with a second through hole 6 corresponding to the first through hole 3. The fixed rod 5 passes through the first through hole 3 and the second through hole 6.

[0094] It can be understood that the angle adjusting structure effectively improves the accuracy and stability of angle adjustment. Through the design of the hole, the accuracy of the angle adjustment process is ensured, and the problem of asymmetry or looseness of the connection point is avoided. The fixed rod 5 provides strong support and prevents drift or instability during angle adjustment, thereby ensuring the consistency and stability of the experimental model angle. At the same time, this design also makes the installation and adjustment of 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 experimental setup, but also provides a solid foundation for the accuracy of landslide experiments and the reliability of data.

[0095] The upper top surface of the bottom infiltration structure is paved with water permeable stones 7, the lower bottom surface of the bottom infiltration structure is provided with an infiltration port 8, and the inside of the bottom infiltration structure is provided with a filler.

[0096] It can be understood that the design of the bottom infiltration 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 water permeable stones 7, the lower bottom surface is provided with an infiltration port 8, and the inside is filled with a filler, which is a sponge or water-absorbing cloth. This design ensures that the bottom infiltration structure can effectively simulate the infiltration environment at the bottom of the landslide body. Water permeable stones 7 allow water to pass through the bottom infiltration 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 infiltration characteristics of soil or other particulate materials, which is crucial for analyzing the stability of the landslide model under different hydrological conditions. Overall, this structure design improves the authenticity of the experimental model and the accuracy of the experimental data, enabling researchers to better understand the impact of water on the stability of the landslide body.

[0097] The stress test structure includes a first sliding block 9, a second sliding block 10, a base 11, a first pressure sensor 12, and a second pressure sensor 13. The first sliding block 9 is fixedly connected to the bottom of the bottom infiltration structure. The first sliding block 9 is detachably connected to the second sliding block 10. The first sliding block 9 is provided below the base 11. The second sliding block 10 is arranged between the first sliding block 9 and the base 11. The second pressure sensor 13 is arranged on the side wall of the base 11. The force receiving end of the second pressure sensor 13 is in contact with the second sliding block 10.

[0098] It can be understood that the first slider 9 is fixedly connected with the bottom of the bottom infiltration structure, ensuring the stability and correct positioning of the slider in the experiment. The first slider 9 is detachably connected with the second slider 10, providing flexible structural configuration to adapt to different test requirements. A base 11 is arranged below the first slider 9, which provides additional support for the first slider 9 and ensures the stability of the entire test structure. The second slider 10 is arranged between the first slider 9 and the base 11, which allows sliding and adjustment between the sliders to accurately measure stress data. The sidewall of the base 11 is equipped with a second pressure sensor 13, and the force receiving end of the second slider 10 is in contact with the second slider 10 for real-time measurement of stress on the slider. This design enables the stress test structure to effectively measure the stress distribution in the landslide model, providing accurate measurement results for data analysis. The configuration of this structure ensures the reliability of data during the test process and the accuracy of experimental results.

[0099] Among them, the first slider 9 is provided with a support column 14, and the second slider 10 is provided with a third through hole 15, and the third through hole 15 is correspondingly arranged with the support column 14.

[0100] It can be understood that in the stress test structure, the support column 14 arranged on the first slider 9 is correspondingly arranged with 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 process by inserting the third through hole 15, preventing the relative displacement or inclination of the slider. This design ensures the accurate alignment between the sliders, allowing the stress sensor to 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 adapt to different experimental requirements. In summary, the design of the support column 14 and the third through hole 15 optimizes the stability and measurement accuracy of the test structure, improving the reliability of experimental data and the flexibility of the test process.

[0101] Among them, the top surface of the second slider 10 is provided with three first grooves 16, and the first pressure sensor 12 is provided with three, three first sensors are arranged in three first grooves 16, and three first sensors are distributed in a triangular shape.

[0102] It can be understood that this step improves the accuracy of stress measurement and the reliability of data. The triangular distribution of the sensor can uniformly capture the stress distribution on multiple points on the surface of the slider 10, reducing local stress concentration, thereby providing more accurate measurement data. Through this arrangement, 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, ensuring the precision and reliability of experimental data.

[0103] The second groove 17 is provided on the base 11, and the second groove 17 is provided with a ball 18, and the upper and lower ends of the ball 18 are in contact with the second slider 10 and the second groove 17, respectively.

[0104] It can be understood that the above structure effectively reduces the friction between the slider 10 and the base 11, so that the slider can move and adjust more smoothly during the test. The arrangement of the ball 18 ensures smooth operation of the slider, avoiding resistance caused by friction, improving the accuracy and smoothness of the test. At the same time, this design reduces the wear of the equipment, prolongs the service life, and maintains the consistency of test accuracy. Overall, this ball configuration optimizes the performance and durability of the stress test structure. The test verification device in the present application can also be used to test and verify other evaluation methods for verifying the calculation results of the sliding surface stress, wherein the data measurement is verified by the test verification device.

[0105] It should be noted that for the device in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.

[0106] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0107] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of evaluating a slip surface stress calculation result, characterized by, The method comprises the following steps: obtaining first information, the first information comprising geological information of a landslide, parameter information of a sliding body and parameter information of a sliding zone; processing the first information based on a similarity theory to obtain model parameter information of a landslide experiment model; constructing the landslide experiment model based on the model parameter information of the landslide experiment model and performing an experiment based on preset experiment data, the experiment obtaining sliding surface stress data of the landslide experiment model; calculating the preset experiment data according to a preset sliding surface stress calculation formula to obtain a sliding surface stress calculation result of the landslide experiment model; evaluating the sliding surface stress calculation result of the landslide experiment model based on the sliding surface stress data of the landslide experiment model to obtain an evaluation result of the sliding surface stress calculation result of the landslide experiment model; The test verification device for verifying the evaluation method of the sliding surface stress calculation result comprises: a model box (1) arranged in a cuboid structure and provided with a cavity; an angle adjusting structure arranged in the cavity; a bottom seepage structure arranged on the angle adjusting structure and arranged in a box-like structure; a stress testing structure fixedly arranged on the lower surface of the bottom seepage structure; wherein the model box (1) is provided with a stand column (2) on the side wall, and the stand column (2) is provided with at least two first through holes (3) connected with the angle adjusting structure; wherein the stress testing structure comprises a first sliding block (9), a second sliding block (10), a base (11), a first pressure sensor (12) and a second pressure sensor (13), the first sliding block (9) is fixedly connected with the bottom of the bottom seepage structure, the first sliding block (9) is detachably connected with the second sliding block (10), the base (11) is arranged below the first sliding block (9), the second sliding block (10) is arranged between the first sliding block (9) and the base (11), the second pressure sensor (13) is arranged on the side wall of the base (11), and the force receiving end of the second pressure sensor (13) is in contact with the second sliding block (10); wherein the first pressure sensor (12) is arranged on the second sliding block (10).

2. The method of evaluating the results of slip surface stress calculation according to claim 1, characterized in that The preset experiment data is calculated according to a preset sliding surface stress calculation formula to obtain a sliding surface stress calculation result of the landslide experiment model, which comprises: calculating the additional stress of any point in the experiment model under the action of the slope tangential resistance based on a preset additional stress calculation formula under the action of the slope tangential resistance; calculating the additional stress of any point in the experiment model under the action of the slope vertical resistance based on a preset additional stress calculation formula under the action of the slope vertical resistance; calculating the total additional stress of any point in the experiment model based on the additional stress of any point in the experiment model under the action of the slope tangential resistance and the additional stress of any point in the experiment model under the action of the slope vertical resistance; Based on the total additional stress of any point in the experimental model and the preset stress state solving formula on the inclined section, normal stress and shear stress on the sliding surface of the experimental model can be calculated.

3. The test verification device for the evaluation method of slip surface stress calculation results according to claim 1, characterized in that, The angle adjusting structure comprises two combined plates (4) and a fixing rod (5), the two combined plates (4) are arranged in parallel to the stand (2), each combined 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).

4. The test verification device for the evaluation method of slip surface stress calculation results according to claim 1, characterized in that, The upper top surface of the bottom infiltration structure is paved with water permeable stones (7), the lower bottom surface of the bottom infiltration structure is provided with an infiltration port (8), and the inside of the bottom infiltration structure is provided with a filler.

5. The test verification device for the evaluation method of slip surface stress calculation results according to claim 1, 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) corresponding to the support column (14).

6. The test verification device for the evaluation method of slip surface stress calculation results according to claim 1, characterized by The upper top surface of the second sliding block (10) is provided with three first grooves (16), and the first pressure sensor (12) is provided with three first grooves (16), and the three first grooves (16) are arranged in a triangular shape.

7. The test verification device for the evaluation method of slip surface stress calculation results according to claim 1, characterized by, The base (11) is provided with a second groove (17), the second groove (17) is provided with a ball (18), 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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