A method, apparatus, electronic device and medium for calculating landslide thrust

Abstract

This invention relates to a method, apparatus, electronic device, and medium for calculating landslide thrust, belonging to the field of geotechnical engineering technology. The method includes: acquiring soil structure parameters of a slope and constructing a geotechnical model of the slope; calculating the theoretical value of the landslide thrust by the soil structure parameters; simulating the geotechnical model to obtain simulated values, using the ratio of the simulated value to the theoretical value as a correction coefficient; obtaining a linear relationship between the structure parameters and the theoretical, simulated, and correction coefficients based on different soil structure parameter values; determining a three-dimensional relationship between the soil structure parameters and the correction coefficient based on the linear relationship; acquiring the soil structure parameters and theoretical values ​​of the target slope; determining the target correction coefficient for the target slope; and determining the corrected landslide thrust of the target slope. This invention obtains the correction coefficient through extensive data calculation, thereby obtaining the three-dimensional landslide thrust of the target slope when the theoretical value of the target slope is known.

Description

Technical Field

[0001] This invention relates to the field of geotechnical engineering technology, and in particular to a method, apparatus, electronic device and medium for calculating landslide thrust. Background Art

[0002] Road construction in hilly and mountainous areas inevitably involves high embankments, deep cuts, and sections with complex geology. Besides the massive scale of the project, slope management is also crucial and complex. During construction, excavation or roadbed filling can disrupt the original slope's balance and integrity, potentially leading to slope instability and landslides, creating construction safety hazards. Furthermore, design flaws or improper construction can jeopardize traffic safety during the operational phase, threatening people's lives and livelihoods. Therefore, slope stability and the management of landslides in mountainous areas have attracted widespread attention.

[0003] In terms of the stability and stress of slope support structures, scholars at home and abroad have conducted extensive research and obtained a series of valuable results. Cheng Aiping et al. first used the finite element strength reduction method to analyze the stability of the slope, and then used the transfer coefficient method to obtain the corresponding landslide thrust, proposing a double-row pile reinforcement scheme; Xu Hong et al. and Shi Jian et al., based on orthogonal experimental analysis, calculated the slope stability under different test level combinations, studied the sensitivity of various influencing factors such as slope height, slope gradient, soil and rock weight, cohesion, and internal friction angle to the slope safety factor, and ranked them; Li Mei et al. combined theoretical calculation, model test, and finite element simulation to determine the landslide thrust distribution pattern behind the piles, providing a reference for the design and optimization of anti-slide piles.

[0004] As can be seen from the above studies, existing research mainly focuses on slope stability and mechanical analysis under conventional conditions, and mostly on single-pile support structures. There is limited research on the support effect of double-row anti-slide piles, especially the interaction between the piles and the landslide. Furthermore, existing standards only provide some general guidelines for the design of anti-slide pile support structures, with limited coverage of double-row pile support structures. The landslide thrust calculation methods in existing highway and railway standards, using the transfer coefficient method (explicit or implicit), primarily target two-dimensional models and do not consider the spatial effects between the landslide body and the anti-slide piles. Therefore, conducting research on the stability and landslide thrust of double-row anti-slide pile support on accretion layer slopes under three-dimensional conditions has significant theoretical and engineering practical value.

[0005] In summary, the existing technology lacks a method for calculating the landslide thrust of a double-row anti-slide pile slope in a three-dimensional state. Summary of the Invention

[0006] In view of this, it is necessary to provide a landslide thrust calculation method, device, electronic equipment and medium to achieve the purpose of calculating the landslide thrust of a double-row anti-slide pile slope in a three-dimensional state.

[0007] To achieve the above objectives, the present invention provides a method for calculating landslide thrust, comprising:

[0008] Obtain the soil structure parameters of the slope and construct the soil-rock model of the slope;

[0009] The theoretical value of the landslide thrust is obtained by calculating the soil structure parameters. The simulated value of the landslide thrust is obtained by simulating the soil and rock mass model. The ratio of the simulated value to the theoretical value is used as the correction coefficient.

[0010] Based on the structural parameters of different soil layers, a linear relationship was obtained between the structural parameters and theoretical values, simulated values, and correction coefficients.

[0011] The three-dimensional relationship between soil structure parameters and correction coefficients is determined based on linear relationships;

[0012] Obtain the target soil layer structure parameters and target theoretical values ​​for the target slope;

[0013] The target correction coefficient is determined based on the target soil layer structural parameters and three-dimensional relationships;

[0014] The landslide thrust of the target slope is determined based on the target theoretical value and the target correction coefficient.

[0015] In one possible implementation, the soil structure parameters include one or more of the following: sliding body volume, sliding body dip angle, cohesion, and internal friction angle.

[0016] In one possible implementation, the calculation of soil structure parameters yields the theoretical value of the landslide thrust, and the simulation calculation of the soil-rock mass model yields the simulated value of the landslide thrust, including:

[0017] The theoretical value of landslide thrust is obtained by calculating soil structure parameters based on the transfer coefficient method.

[0018] The simulated values ​​of landslide thrust on the slope were obtained by simulating the soil and rock mass model using finite element software.

[0019] In one possible implementation, the calculation of the theoretical value of the slope landslide thrust based on the transfer coefficient method of soil structure parameters includes:

[0020] When the slope is a railway slope, the theoretical value of the landslide thrust is calculated by the explicit solution method based on the transfer coefficient method to the soil and rock mass model.

[0021] When the slope is a highway slope, the theoretical value of the landslide thrust is calculated by using the implicit solution method based on the transfer coefficient method to calculate the soil and rock mass model.

[0022] In one possible implementation, obtaining the linear relationship between the structural parameters and theoretical values, simulated values, and correction coefficients based on different soil layer structural parameter values ​​includes:

[0023] As the volume of the sliding body changes, the first linear relationship between the volume of the sliding body and the theoretical value, the simulated value, and the correction factor is obtained;

[0024] As the value of the sliding body inclination angle changes, a second linear relationship is obtained between the sliding body inclination angle and the theoretical value, the simulated value, and the correction factor;

[0025] As the value of cohesion changes, a third linear relationship is obtained between cohesion and theoretical value, simulated value, and correction factor;

[0026] As the value of the internal friction angle changes, a fourth linear relationship is obtained between the internal friction angle and the theoretical value, the simulated value, and the correction coefficient.

[0027] In one possible implementation, determining the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships includes:

[0028] The three-dimensional relationship between the sliding body volume, sliding body inclination angle, and correction coefficient is determined based on the first linear relationship, the second linear relationship, the third linear relationship, and the fourth linear relationship.

[0029] The three-dimensional relationship between cohesion, internal friction angle and correction coefficient is determined based on the first linear relationship, the second linear relationship, the third linear relationship and the fourth linear relationship.

[0030] In one possible implementation, determining the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient includes:

[0031] Multiplying the target theoretical value by the target correction coefficient yields the corrected landslide thrust of the target slope. The landslide thrust of the corrected target slope is the landslide thrust in the three-dimensional scene.

[0032] On the other hand, the present invention also provides a landslide thrust calculation device, comprising:

[0033] The model building module is used to obtain the soil structure parameters of the slope and build the soil and rock mass model of the slope.

[0034] The target data acquisition module is used to calculate the theoretical value of the landslide thrust of the slope by calculating the soil structure parameters, and to simulate the landslide thrust of the slope by simulating the soil and rock mass model. The ratio of the simulated value to the theoretical value is used as the correction coefficient.

[0035] The linear relationship determination module is used to obtain the linear relationship between structural parameters and theoretical values, simulated values, and correction coefficients based on different soil layer structural parameter values.

[0036] The three-dimensional relationship determination module is used to determine the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships.

[0037] The target theoretical value acquisition module is used to acquire the target soil layer structure parameters and target theoretical values ​​of the target slope;

[0038] The target correction coefficient acquisition module is used to determine the target correction coefficient based on the target soil layer structure parameters and three-dimensional relationships.

[0039] The target landslide thrust acquisition module is used to determine the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient.

[0040] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein,

[0041] The memory is used to store programs;

[0042] The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps in the landslide thrust calculation method described in any of the above implementations.

[0043] On the other hand, the present invention also provides a computer-readable storage medium for storing a computer-readable program or instructions, which, when executed by a processor, can implement the steps in the landslide thrust calculation method described in any of the above implementations.

[0044] The beneficial effects of this invention are as follows: This invention provides a method for calculating landslide thrust. First, the soil structure parameters of the slope are obtained, and a soil-rock mass model of the slope is constructed. Then, the theoretical value of the landslide thrust is obtained by calculating the soil structure parameters. The simulated value of the landslide thrust is obtained by simulating the soil-rock mass model. The ratio of the simulated value to the theoretical value is used as a correction coefficient. Based on different soil structure parameter values, a linear relationship is obtained between the structure parameters and the theoretical, simulated, and correction coefficients. Based on this linear relationship, the soil structure parameters affecting the landslide thrust are determined. Furthermore, based on the linear relationship, a three-dimensional relationship between the soil structure parameters and the correction coefficient is determined. The target soil structure parameters and target theoretical value of the target slope are obtained. Based on the target soil structure parameters and the three-dimensional relationship, a target correction coefficient is determined. Based on the target theoretical value and the target correction coefficient, the corrected landslide thrust of the target slope is determined. This invention obtains the correction coefficient through extensive data calculation, thus, when the theoretical value of the target slope is known, the landslide thrust of the target slope in a three-dimensional scenario can be obtained through the correction coefficient. Attached Figure Description

[0045] Figure 1A flowchart illustrating an embodiment of the landslide thrust calculation method provided by this invention;

[0046] Figure 2 A slope grid division diagram in an embodiment of a landslide thrust calculation method provided by the present invention;

[0047] Figure 3 For the present invention Figure 1 A schematic diagram of an embodiment of S102;

[0048] Figure 4 This is a landslide thrust distribution diagram in an embodiment of the present invention;

[0049] Figure 5 This is a diagram showing the relationship between the volume of the sliding body and the landslide thrust in an embodiment of the present invention;

[0050] Figure 6 This is a diagram showing the relationship between the sliding body inclination angle and the landslide thrust in an embodiment of the present invention;

[0051] Figure 7 This is a graph showing the relationship between the shear strength index cohesion and landslide thrust of the sliding body in an embodiment of the present invention;

[0052] Figure 8 This is a graph showing the relationship between the internal friction angle and the landslide thrust, which are shear strength parameters of the sliding body in this embodiment of the invention.

[0053] Figure 9 For the present invention Figure 1 A schematic diagram of an embodiment of S104;

[0054] Figure 10 This is a three-dimensional surface diagram showing the relationship between the theoretical formula correction coefficient and the volume and inclination angle of the sliding body in the embodiments of the present invention.

[0055] Figure 11 This is a three-dimensional surface plot showing the relationship between the theoretical formula correction coefficient and cohesion and internal friction angle in the embodiments of the present invention.

[0056] Figure 12 This is a comparison chart of simulated and measured values ​​of landslide thrust distribution in an embodiment of the present invention.

[0057] Figure 13 A schematic flowchart of an embodiment of a landslide thrust calculation device provided by the present invention;

[0058] Figure 14 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0059] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0060] This invention provides a method, apparatus, electronic device, and medium for calculating landslide thrust, which will be described below.

[0061] Figure 1 A schematic flowchart of an embodiment of the landslide thrust calculation method provided by the present invention is shown below. Figure 1 As shown, the landslide thrust calculation method includes:

[0062] S101. Obtain the soil structure parameters of the slope and construct the soil-rock model of the slope.

[0063] S102. Calculate the soil structure parameters to obtain the theoretical value of the landslide thrust of the slope, and perform simulation calculation on the soil and rock mass model to obtain the simulated value of the landslide thrust of the slope. Use the ratio of the simulated value to the theoretical value as the correction coefficient.

[0064] S103. Based on the structural parameter values ​​of different soil layers, obtain the linear relationship between the structural parameters and theoretical values, simulated values ​​and correction coefficients;

[0065] S104. Determine the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships;

[0066] S105. Obtain the target soil structure parameters and target theoretical values ​​of the target slope;

[0067] S106. Determine the target correction coefficient based on the target soil layer structural parameters and three-dimensional relationship;

[0068] S107. Determine the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient.

[0069] Compared with existing technologies, this embodiment provides a landslide thrust calculation method. First, it obtains the soil structure parameters of the slope and constructs a soil-rock mass model of the slope. Then, it calculates the theoretical value of the landslide thrust by calculating the soil structure parameters. Simulation calculations are then performed on the soil-rock mass model to obtain the simulated value of the landslide thrust. The ratio of the simulated value to the theoretical value is used as a correction coefficient. Based on different soil structure parameter values, a linear relationship is obtained between the structural parameters and the theoretical, simulated, and correction coefficients. Based on this linear relationship, the soil structure parameters affecting the landslide thrust are determined. Furthermore, based on the linear relationship, a three-dimensional relationship between the soil structure parameters and the correction coefficient is determined. The target soil structure parameters and target theoretical value of the target slope are obtained. Based on the target soil structure parameters and the three-dimensional relationship, a target correction coefficient is determined. Finally, based on the target theoretical value and the target correction coefficient, the corrected landslide thrust of the target slope is determined. This invention obtains the correction coefficient through extensive data calculation, thus, when the theoretical value of the target slope is known, obtaining the landslide thrust of the target slope in a three-dimensional scenario through the correction coefficient.

[0070] It should be noted that this embodiment is applicable to the calculation of landslide thrust in slope deposits under three-dimensional scenarios, such as railways and highways in remote mountainous areas. It is understood that this embodiment is applicable to the calculation of landslide thrust in slope deposits under any three-dimensional scenario.

[0071] In a specific embodiment of the present invention, step S101, constructing a soil and rock model of the slope, includes:

[0072] The anti-slide piles on the slope are treated as ideal linear elastic bodies, and a slope rock and soil model is constructed based on soil layer parameters.

[0073] The slope soil and rock mass was simulated using the Mohr-Coulomb constitutive model, and the anti-slide piles were considered as ideal linear elastic bodies. Through field tests and relevant design specifications, parameter values ​​for the slope soil and rock mass and the anti-slide piles were determined. Table 1 shows the parameters for soil and rock materials of different types.

[0074] Table 1: Parameters of soil and rock materials of different types

[0075]

[0076] A hybrid mesh generator was used to create the mesh cells. The slope model has a height of 50m, a width of 78m, and a thickness of 18m. The mesh division is as follows: Figure 2 As shown in the figure. The anti-slide piles are simulated using 1D beam elements, while the slope soil and rock materials are simulated using 3D elements. The model contains a total of 30,048 elements and 32,981 nodes.

[0077] In some embodiments of the present invention, the soil structure parameters include one or more of the following: sliding body volume, sliding body dip angle, cohesion, and internal friction angle.

[0078] In some embodiments of the present invention, in step S102, such as Figure 3 As shown, the theoretical value of the landslide thrust is obtained by calculating the soil structure parameters, and the simulated value of the landslide thrust is obtained by simulating the soil-rock mass model, including:

[0079] S302. The theoretical value of landslide thrust is obtained by calculating the soil structure parameters based on the transfer coefficient method.

[0080] S302. Based on the finite element method software, the rock and soil model is simulated and calculated to obtain the simulated value of the landslide thrust of the slope.

[0081] In some embodiments of the present invention, the calculation of the theoretical value of the landslide thrust of the slope based on the transfer coefficient method for soil structure parameters includes:

[0082] When the slope is a railway slope, the theoretical value of the landslide thrust is calculated by the explicit solution method based on the transfer coefficient method to the soil and rock mass model.

[0083] When the slope is a highway slope, the theoretical value of the landslide thrust is calculated by using the implicit solution method based on the transfer coefficient method to calculate the soil and rock mass model.

[0084] In a specific embodiment of the present invention, it is assumed that the landslide slides uniformly along the sliding surface. In the design of railway slopes, the transfer coefficient method is usually used to determine the theoretical value of landslide thrust. The calculation formula is as follows:

[0085]

[0086] When the slope is a highway slope, the theoretical value is calculated using the following formula:

[0087]

[0088] In the formula, T i For the first i Landslide thrust at the end of a soil strip; K This refers to the slope safety factor. W i For the first i The weight of each soil strip; α i For the first i The angle of inclination of the sliding surface where each soil strip is located; φ i For the first i The friction angle at the bottom of the soil strip; c i For the first i Cohesion at the bottom of the soil strip; L i For the firsti Length of the sliding surface of each strip; ψ For the first i- One soil strip transfer coefficient.

[0089] The theoretical value of landslide thrust in three-dimensional state is equal to the product of the theoretical value of landslide thrust in two-dimensional state and the width of the circular pile under load. The formula for calculating the width of the circular pile under load is as follows:

[0090]

[0091] In the formula, This is the calculated width of the anti-slide pile; d The anti-slide pile diameter is given; in this embodiment, the calculated width of the anti-slide pile should be 2.25m.

[0092] The distribution of landslide thrust on the two rows of anti-slide piles was determined using the finite element method, and compared and verified through engineering field measurements, such as... Figure 4 The figures show the finite element analysis values ​​and measured data of the landslide thrust distribution.

[0093] Based on theoretical calculations and finite element simulations using the transfer coefficient method, the finite element simulation values ​​and standard theoretical values ​​of landslide thrust (when K=1.00) are shown in Table 2.

[0094] Table 2 Comparison of Simulated and Theoretical Values ​​of Landslide Thrust Table 2.

[0095]

[0096] According to the results of finite element analysis, the simulated values ​​of landslide thrust on the upper and lower piles are 643.7 kN and 556.8 kN, respectively. The total landslide thrust of the upper piles is 15.6% greater than that of the lower piles. The simulated values ​​show that the landslide thrust sharing ratio of the upper and lower piles is 53.6% and 46.4%, respectively.

[0097] The theoretical landslide thrust calculated using the standard method is about 15% larger than the finite element simulation results, while the theoretical landslide thrust obtained using the transfer coefficient method is even more conservative. The main reasons are as follows: First, the transfer coefficient method assumes the landslide is a rigid body, neglecting the deformation of the landslide body during sliding and the stress on the anti-slide piles; second, in the theoretical calculation, the calculated width of the anti-slide pile obtained from the formula for the force-bearing width of the circular pile is based on an empirical formula, which may have some error compared to the stress state of the anti-slide pile in three dimensions; furthermore, factors such as the mesh generation and boundary conditions of the slope model in the finite element simulation may also cause some deviation.

[0098] The landslide thrust experienced by the upper row of piles is greater than that experienced by the lower row of piles. This is due to the unique distribution and characteristics of the piles and soil on the anti-slide pile slope studied (in this model, the volume of the landslide behind the two rows of piles is approximately the same), as well as the following two aspects: Firstly, the inclination angle of the landslide behind the upper row of piles is greater than that of the lower row of piles, resulting in a larger component of the landslide sliding force experienced by the upper row of piles; secondly, after the landslide thrust generated by the self-weight of the landslide is partially offset by the upper row of piles, the landslide thrust experienced by the lower row of piles is reduced.

[0099] It is worth noting that when calculating landslide thrust using the transfer coefficient method, different values ​​of the safety factor K will lead to differences in the theoretical calculation results depending on whether an explicit or implicit solution is used. Taking the above-mentioned pile foundation as an example, the theoretical results of landslide thrust calculated by using the explicit and implicit solutions are shown in Table 3 as the slope safety factor K increases from 1.00 to 1.35.

[0100] Table 3: Comparison of landslide thrust calculations using explicit and implicit methods (unit: kN)

[0101]

[0102] Analysis of the theoretical calculations of landslide thrust on the upper piles reveals that when K=1.00, the theoretical calculations are equal, with the theoretical value only about 15% larger than the finite element simulation value. However, when K>1.00, the landslide thrust calculated using the explicit method is greater than that calculated using the implicit method, and the larger K is, the greater the difference between the results obtained by the explicit and implicit methods. Specifically, when K=1.05, the landslide thrust calculated using the explicit method is 40.6 kN larger than that calculated using the implicit method; while when K=1.35, the difference increases to 410.6 kN. The theoretical value obtained using the explicit method is 2.5 times that of the finite element simulation value, while the result obtained using the implicit method is 1.8 times that of the finite element simulation value. Therefore, the explicit method is more conservative in designing and calculating landslide thrust compared to the implicit method.

[0103] The reason why explicit methods are used to calculate landslide thrust and introduce safety factors in railway slope design is that railways bear large loads and train speeds are high, requiring more adverse working conditions to be considered in the design of the support structure to ensure the safety and stability of the slope. In contrast, in the design of highway slope support structures, vehicle loads are relatively small. If explicit methods are used to design anti-slide piles, it would be too conservative and waste resources. Therefore, implicit methods are more suitable for calculating landslide thrust in highway slopes.

[0104] In addition, the volume and inclination angle of the sliding body above the upper row of piles are larger; and when the landslide acts on the lower row of piles, part of the soil's self-weight has been offset by the upper row of piles, resulting in a larger landslide thrust acting on the upper row of piles than on the lower row of piles; therefore, in practice, special attention should be paid to the stress on the upper row of piles.

[0105] In some embodiments of the present invention, obtaining the linear relationship between structural parameters and theoretical values, simulated values, and correction coefficients based on different soil layer structural parameter values ​​includes:

[0106] As the volume of the sliding body changes, the first linear relationship between the volume of the sliding body and the theoretical value, the simulated value, and the correction factor is obtained;

[0107] As the value of the sliding body inclination angle changes, a second linear relationship is obtained between the sliding body inclination angle and the theoretical value, the simulated value, and the correction factor;

[0108] As the value of cohesion changes, a third linear relationship is obtained between cohesion and theoretical value, simulated value, and correction factor;

[0109] As the value of the internal friction angle changes, a fourth linear relationship is obtained between the internal friction angle and the theoretical value, the simulated value, and the correction coefficient.

[0110] In a specific embodiment of the present invention, the first linear relationship is as follows: Figure 5 As shown, the second linear relationship is as follows: Figure 6 As shown, the third linear relationship is as follows: Figure 7 As shown, the third linear relationship is as follows: Figure 8 As shown. Specifically, this study focuses on the above-mentioned pile foundation as the main research object, analyzing the landslide thrust (including theoretical values ​​and finite element simulation values) corresponding to changes in slope soil parameters. The numerical simulation values ​​of the landslide thrust are compared with the theoretical values, which are calculated using the transfer coefficient method (safety factor K=1.00), and the quantitative relationships are analyzed. For example... Figure 5 The diagram shown illustrates the relationship between the landslide volume and landslide thrust in an embodiment of the present invention. The main influencing factors selected are the landslide volume A (initially replaced by the horizontal distance L from the slope crest to the soil layer interface, then converted), the landslide inclination angle α, the cohesion c, and the internal friction angle φ. By default, L = 6m, α = 48°, c = 18kPa, and φ = 22°. The specific steps are as follows:

[0111] Step 1: When studying the influence of landslide volume on landslides, the horizontal distance L from the top of the slope to the layer interface is selected as the independent variable. As L changes, the corresponding landslide volume also changes. Finite element analysis was performed on slope models with L values ​​of 5m, 6m, 7m, 8m, and 9m, corresponding to landslide volumes of 64.3m³. 3 / m, 78.7m 3 / m, 94.3m 3 / m, 110.9m 3 / m, 128.7m 3 / m.

[0112] The influence of landslide thrust on the volume of the landslide body is shown in the figure. Figure 5As shown, both the simulated and theoretical values ​​of landslide thrust gradually increase with the increase of the landslide volume, and the increase in simulated values ​​is greater than that in theoretical values. The finite element simulation value of landslide thrust starts from a landslide volume of 64.3 m³. 3 The torque gradually increased from 393.8 kN at 1 / m to 128.7 kN at 1 / m. 3 The theoretical value increases from 508.2kN to 1533.8kN, with the current value at 1650.5kN / m.

[0113] The landslide thrust calculated using the transfer coefficient method deviates somewhat from the finite element simulation results, with the two values ​​reversing between 94.3 m³ / m and 110.9 m³ / m. The intersection of the simulated and theoretical curves occurs at a landslide volume of 105 m³. 3 The position / m indicates that the volume of the sliding body is less than 105m³. 3 When the volume is / m, the simulated value is less than the theoretical value; while when the volume of the sliding body is greater than 105m³, the simulated value is less than the theoretical value. 3 When the value is / m, the simulated value is greater than the theoretical value.

[0114] Step Two: As Figure 6 The figure shown is a graph showing the relationship between the inclination angle of the sliding body and the landslide thrust in an embodiment of the present invention. The inclination angle of the sliding body is selected as the independent variable as 44°, 48°, 52°, 56° and 60° respectively. The landslide thrust corresponding to the continuous change of the inclination angle is simulated using finite element method.

[0115] Figure 6 The influence of the landslide body's inclination angle on the magnitude of the landslide thrust is shown. As the inclination angle increases, both the simulated and theoretical values ​​of the landslide thrust gradually increase. The finite element simulation value of the landslide thrust increases from 481.6 kN at an inclination angle of 44° to 1205.6 kN at 60°. Furthermore, the increase in the simulated landslide thrust is greater than before when the inclination angle increases from 56° to 60°. The theoretical landslide thrust is slightly larger than the simulated value, increasing almost linearly from 508.5 kN to 1299.7 kN. When the inclination angle between the landslide body and the sliding bed increases, the sliding force component of the landslide body increases, while the frictional resistance between the landslide body and the sliding bed decreases, thus increasing the landslide thrust value.

[0116] Step 3: As Figure 7 The diagram shows the relationship between cohesion and landslide thrust, which are shear strength indices of the landslide body, in an embodiment of the present invention. When the cohesion is too low, the sliding force of the landslide body will not be sufficient to offset it, leading to slope instability and an increase in landslide thrust. To investigate the influence of cohesion on landslide thrust, the cohesion values ​​were set to 16 kPa, 17 kPa, 18 kPa, 19 kPa, and 20 kPa, respectively.

[0117] As the cohesion increased from 16 kPa to 20 kPa, the finite element simulation value of the landslide thrust gradually decreased from 789.5 kN to 513.2 kN, while the theoretical value of the landslide thrust correspondingly decreased steadily from 822.6 kN to 640.9 kN. Compared with the influencing factors of landslide volume and dip angle, the change in landslide thrust caused by the change in cohesion is relatively small, indicating that the influence of cohesion on landslide thrust is less than that of landslide volume and dip angle.

[0118] Step Four: As Figure 8 The figure shown is a graph showing the relationship between the internal friction angle and the landslide thrust of the sliding body in an embodiment of the present invention. The internal friction angle is selected as the independent variable, and other parameters are kept unchanged. The landslide thrust results under five working conditions of 20°, 21°, 22°, 23° and 24° are analyzed.

[0119] The results showed that when the internal friction angle of the landslide increased from 20° to 24°, the finite element simulation value of the landslide thrust gradually decreased from 783.8 kN to 531.8 kN; the theoretical value of the landslide thrust steadily decreased from 819.6 kN to 641.3 kN. Similar to cohesion, the change in landslide thrust caused by the internal friction angle was relatively small, and the sensitivity of cohesion and internal friction angle to landslide thrust was basically the same.

[0120] In some embodiments of the present invention, in step S105, such as Figure 9 As shown, determining the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships includes:

[0121] S901. Determine the three-dimensional relationship between the sliding body volume, the sliding body tilt angle, and the correction coefficient based on the first linear relationship, the second linear relationship, the third linear relationship, and the fourth linear relationship;

[0122] S902. Based on the first linear relationship, the second linear relationship, the third linear relationship, and the fourth linear relationship, determine the three-dimensional relationship between cohesion, internal friction angle, and correction coefficient.

[0123] In some embodiments of the present invention, determining the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient includes:

[0124] Multiply the target theoretical value by the target correction coefficient to obtain the corrected landslide thrust of the target slope. The corrected landslide thrust of the target slope is the landslide thrust in the three-dimensional scene.

[0125] In a specific embodiment of the present invention, under three-dimensional conditions, the landslide thrust experienced by the anti-slide pile is also affected by various factors such as the geometric characteristics of the landslide body and the shape of the pile cross-section, making the determination of the landslide thrust more complex. Therefore, the concept of a theoretical formula correction coefficient "n" can be introduced, defined as the ratio of the finite element simulation value of the landslide thrust to the theoretical value. This improves the landslide thrust theoretical formula of the transfer coefficient method. The influence of this coefficient on the combined effects of two types of factors—the volume and inclination angle of the landslide body, and the cohesion and internal friction angle—is studied to make it reasonable for use in the calculation of landslide thrust under three-dimensional conditions. The corrected landslide thrust calculation formula is as follows:

[0126] in, —The corrected landslide thrust, i.e., the three-dimensional landslide thrust;

[0127] n —The theoretical formula for landslide thrust has a correction factor, which may be related to the shape and size of the landslide body and its shear strength parameters. The specific steps are as follows:

[0128] Step 1: From S103, it can be observed that the volume and inclination angle of the landslide body play important roles in the variation of landslide thrust; therefore, the correction coefficients of the theoretical formula are analyzed. n The results (i.e., simulated values / theoretical values) for different sliding body volumes and sliding body inclination angles are shown in Table 4.

[0129] Table 4: Results of Correction Coefficients for Theoretical Formulas

[0130]

[0131] like Figure 10 The figure shown is a three-dimensional surface plot showing the relationship between the theoretical formula correction coefficient and the volume and tilt angle of the sliding body in the embodiment of the invention. To more intuitively reflect the changes in theoretical / simulated values, the volume and tilt angle of the sliding body are used as the horizontal axis and the theoretical / simulated values ​​are used as the vertical axis to create a three-dimensional surface plotting the changes in theoretical / simulated values ​​with the volume and tilt angle of the sliding body.

[0132] Step Two: The shear strength parameters of the landslide mass (cohesion c, internal friction angle φ) also have a profound impact on the magnitude of the landslide thrust. Therefore, the volume of the landslide mass A = 78.7 m³ 3 With the slope angle β=48° kept constant, the independent variable cohesion was selected as 16kPa, 17kPa, 18kPa, 19kPa, and 20kPa, and the internal friction angle was selected as 20°, 21°, 22°, 23°, and 24°. The simulated and theoretical values ​​of the landslide thrust were analyzed and calculated one by one, and the theoretical formula correction coefficient n for these 25 cases was obtained, as shown in Table 5.

[0133] Table 5: Results of Correction Coefficients for Theoretical Formulas

[0134]

[0135] like Figure 11 The figure shown is a three-dimensional surface plot of the relationship between the theoretical formula correction coefficient and the cohesion and internal friction angle in an embodiment of the present invention. The three-dimensional surface plot of the relationship between the theoretical formula correction coefficient and the cohesion and internal friction angle is shown above.

[0136] It is worth noting that, to avoid randomness and to verify the reliability and applicability of the above theoretical research, another slope model and measured landslide thrust data are used. The anti-slide pile penetrates 14m through the landslide section, and the pile body has a rectangular cross-section of 2m × 3m.

[0137] The landslide thrust on a single pile was simulated using Midas GTS NX software and found to be 6012.5 kN. The theoretical landslide thrust on this anti-slide pile was obtained as 6385.4 kN using the transfer coefficient method. Therefore, the theoretical formula correction coefficient (the ratio of the simulated value to the theoretical value) n = 0.942 can be obtained, which is consistent with the landslide thrust theoretical formula correction coefficient range obtained above, namely 0.743~1.274.

[0138] like Figure 12 The figure shown is a comparison chart of simulated and measured values ​​of landslide thrust distribution in the verification of an embodiment of the present invention. Figure 12 The measured results of the thrust distribution of the landslide are basically consistent with the finite element simulation results. Most measuring points show that the simulated value is slightly larger than the measured value, and the distribution is basically parabolic, which is consistent with the previous text.

[0139] Table 6 shows the comparison between the simulated and measured values ​​of landslide thrust. According to the actual measurement at the engineering site, the landslide thrust on the anti-slide pile is 5796.3 kN. The theoretical formula correction coefficient (ratio of measured value to theoretical value) n = 0.908 calculated from the engineering measurement is 3.6% smaller than the result obtained from the simulation. The relative error is within the acceptable range, which verifies the rationality and reliability of the study on "theoretical formula correction coefficient n".

[0140] Table 6: Comparison of Simulated and Measured Values ​​of Landslide Thrust

[0141]

[0142] To better implement the three-dimensional state glide slope thrust calculation method in this embodiment of the invention, based on the three-dimensional state glide slope thrust calculation method, correspondingly, as follows: Figure 13 As shown, this embodiment of the invention also provides a landslide thrust calculation device. A landslide thrust calculation device 1300 includes:

[0143] Model building module 1301 is used to obtain the soil structure parameters of the slope and build the rock and soil model of the slope.

[0144] The target data acquisition module 1302 is used to calculate the soil structure parameters to obtain the theoretical value of the slope landslide thrust, and to simulate the rock and soil model to obtain the simulated value of the slope landslide thrust, with the ratio of the simulated value to the theoretical value as the correction coefficient.

[0145] The linear relationship determination module 1303 is used to obtain the linear relationship between structural parameters and theoretical values, simulated values ​​and correction coefficients based on different soil layer structural parameter values.

[0146] The three-dimensional relationship determination module 1304 is used to determine the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships.

[0147] The target theoretical value acquisition module 1305 is used to acquire the target soil layer structure parameters and target theoretical values ​​of the target slope.

[0148] The target correction coefficient acquisition module 1306 is used to determine the target correction coefficient based on the target soil layer structure parameters and three-dimensional relationships.

[0149] The target landslide thrust acquisition module 1307 is used to determine the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient.

[0150] The landslide thrust calculation device 1300 provided in the above embodiment can realize the technical solution described in the above embodiment of the landslide thrust calculation method. The specific implementation principle of each module or unit can be found in the corresponding content in the above embodiment of the landslide thrust calculation method, which will not be repeated here.

[0151] like Figure 14 As shown, the present invention also provides an electronic device 1400. The electronic device 1400 includes a processor 1401, a memory 1402, and a display 1403. Figure 14 Only some components of the electronic device 1400 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0152] In some embodiments, processor 1401 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 1402 or process data, such as a landslide thrust calculation method in this invention.

[0153] In some embodiments, processor 1401 may be a single server or a group of servers. The server group may be centralized or distributed. In some embodiments, processor 1401 may be local or remote. In some embodiments, processor 1401 may be implemented on a cloud platform. In some embodiments, the cloud platform may include a private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, internal cloud, multi-cloud, or any combination thereof.

[0154] In some embodiments, memory 1402 may be an internal storage unit of electronic device 1400, such as a hard disk or memory of electronic device 1400. In other embodiments, memory 1402 may also be an external storage device of electronic device 1400, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., provided on electronic device 1400.

[0155] Furthermore, the memory 1402 may include both internal storage units of the electronic device 1400 and external storage devices. The memory 1402 is used to store application software and various types of data installed on the electronic device 1400.

[0156] In some embodiments, display 1403 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 1403 is used to display information from electronic device 1400 and to display a visual user interface. Components 1401-1403 of electronic device 1400 communicate with each other via a system bus.

[0157] In one embodiment, when processor 1401 executes a landslide thrust calculation program stored in memory 1402, the following steps can be performed:

[0158] Obtain the soil structure parameters of the slope and construct the soil-rock model of the slope;

[0159] The theoretical value of the landslide thrust is obtained by calculating the soil structure parameters. The simulated value of the landslide thrust is obtained by simulating the soil and rock mass model. The ratio of the simulated value to the theoretical value is used as the correction coefficient.

[0160] Based on the structural parameters of different soil layers, a linear relationship was obtained between the structural parameters and theoretical values, simulated values, and correction coefficients.

[0161] The three-dimensional relationship between soil structure parameters and correction coefficients is determined based on linear relationships;

[0162] Obtain the target soil layer structure parameters and target theoretical values ​​for the target slope;

[0163] The target correction coefficient is determined based on the target soil layer structural parameters and three-dimensional relationships;

[0164] The landslide thrust of the target slope is determined based on the target theoretical value and the target correction coefficient.

[0165] It should be understood that when the processor 1401 executes a landslide thrust calculation program in the memory 1402, in addition to the functions mentioned above, it can also perform other functions, as detailed in the description of the corresponding method embodiments above.

[0166] Furthermore, the embodiments of the present invention do not specifically limit the type of the electronic device 1400 mentioned. The electronic device 1400 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 1400 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0167] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0168] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for calculating landslide thrust, characterized in that, include: Obtain the soil structure parameters of the slope and construct the soil-rock model of the slope; The theoretical value of the landslide thrust is obtained by calculating the soil structure parameters. The simulated value of the landslide thrust is obtained by simulating the soil and rock mass model. The ratio of the simulated value to the theoretical value is used as the correction coefficient. Based on the structural parameters of different soil layers, a linear relationship was obtained between the structural parameters and theoretical values, simulated values, and correction coefficients. The three-dimensional relationship between soil structure parameters and correction coefficients is determined based on linear relationships; Obtain the target soil layer structure parameters and target theoretical values ​​for the target slope; The target correction coefficient is determined based on the target soil layer structural parameters and three-dimensional relationships; The landslide thrust of the target slope is determined based on the target theoretical value and the target correction coefficient.

2. The landslide thrust calculation method according to claim 1, characterized in that, The soil structure parameters include one or more of the following: sliding body volume, sliding body dip angle, cohesion, and internal friction angle.

3. The landslide thrust calculation method according to claim 1, characterized in that, The theoretical value of the landslide thrust is obtained by calculating the soil structure parameters, and the simulated value of the landslide thrust is obtained by simulating the soil-rock mass model, including: The theoretical value of landslide thrust is obtained by calculating soil structure parameters based on the transfer coefficient method. The simulated values ​​of landslide thrust on the slope were obtained by simulating the soil and rock mass model using finite element software.

4. The landslide thrust calculation method according to claim 3, characterized in that, The theoretical value of landslide thrust obtained by calculating soil structure parameters based on the transfer coefficient method includes: When the slope is a railway slope, the theoretical value of the landslide thrust is calculated by the explicit solution method based on the transfer coefficient method to the soil and rock mass model. When the slope is a highway slope, the theoretical value of the landslide thrust is calculated by using the implicit solution method based on the transfer coefficient method to calculate the soil and rock mass model.

5. The landslide thrust calculation method according to claim 2, characterized in that, The linear relationship between structural parameters and theoretical, simulated, and correction factors based on different soil layer structural parameter values ​​is obtained, including: As the volume of the sliding body changes, the first linear relationship between the volume of the sliding body and the theoretical value, the simulated value, and the correction factor is obtained; As the value of the sliding body inclination angle changes, a second linear relationship is obtained between the sliding body inclination angle and the theoretical value, the simulated value, and the correction factor; As the value of cohesion changes, a third linear relationship is obtained between cohesion and theoretical value, simulated value, and correction factor; As the value of the internal friction angle changes, a fourth linear relationship is obtained between the internal friction angle and the theoretical value, the simulated value, and the correction coefficient.

6. The landslide thrust calculation method according to claim 5, characterized in that, The determination of the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships includes: The three-dimensional relationship between the sliding body volume, sliding body inclination angle, and correction coefficient is determined based on the first linear relationship, the second linear relationship, the third linear relationship, and the fourth linear relationship. The three-dimensional relationship between cohesion, internal friction angle and correction coefficient is determined based on the first linear relationship, the second linear relationship, the third linear relationship and the fourth linear relationship.

7. The landslide thrust calculation method according to claim 1, characterized in that, The determination of the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient includes: Multiply the target theoretical value by the target correction coefficient to obtain the corrected landslide thrust of the target slope. The corrected landslide thrust of the target slope is the landslide thrust in the three-dimensional scene.

8. A landslide thrust calculation device, characterized in that, include: The model building module is used to obtain the soil structure parameters of the slope and build the soil and rock mass model of the slope. The target data acquisition module is used to calculate the theoretical value of the landslide thrust of the slope by calculating the soil structure parameters, and to simulate the landslide thrust of the slope by simulating the soil and rock mass model. The ratio of the simulated value to the theoretical value is used as the correction coefficient. The linear relationship determination module is used to obtain the linear relationship between structural parameters and theoretical values, simulated values, and correction coefficients based on different soil layer structural parameter values. The three-dimensional relationship determination module is used to determine the three-dimensional relationship between soil structure parameters and correction coefficients based on linear relationships. The target theoretical value acquisition module is used to acquire the target soil layer structure parameters and target theoretical values ​​of the target slope; The target correction coefficient acquisition module is used to determine the target correction coefficient based on the target soil layer structure parameters and three-dimensional relationships. The target landslide thrust acquisition module is used to determine the corrected landslide thrust of the target slope based on the target theoretical value and the target correction coefficient.

9. An electronic device, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps in the landslide thrust calculation method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps in the landslide thrust calculation method according to any one of claims 1 to 7.

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