A geomechanics-based physical model construction method, device, medium and product

Abstract

This application discloses a method, equipment, medium, and product for constructing a physical model based on geomechanics, relating to the field of physical model testing. The method includes: determining a first geometric similarity ratio; determining a second geometric similarity ratio; establishing a dominant similarity law based on the first geometric similarity ratio to determine the baseline physical and mechanical parameters of the main material of the physical model; correcting the mechanical strength parameters of key structures based on the first and second geometric similarity ratios; constructing the main body of the physical model based on the baseline physical and mechanical parameters and the dimensions of the physical model, and constructing key structures based on the corrected mechanical strength parameters and actual fabrication dimensions; and integrating the constructed key structures with the main body of the constructed physical model based on the prototype geological body to be tested, obtaining the constructed physical model. This application can reflect macroscopic geological structures and reasonably characterize and control the mechanical effects of key structures within a limited physical model space.

Description

Technical Field

[0001] This application relates to the field of physical model testing for geotechnical engineering and geological disaster prevention, and in particular to a method, equipment, medium and product for constructing physical models based on geomechanics. Background Technology

[0002] Physical model experiments are a key means in geotechnical engineering, geological disaster prevention and control, and other fields to study the deformation and failure mechanisms of geological bodies and verify the effectiveness of prevention and control measures. The core of these experiments lies in adhering to similarity theory, ensuring that the physical model and the prototype (geological body) satisfy certain similarity relationships in terms of geometric and physical mechanical parameters.

[0003] In practical applications, a prominent contradiction often arises: the prototype engineering (such as high slopes, landslides, surrounding rock or foundations of underground caverns) is enormous, while the size of the laboratory physical model box is limited. To resolve this contradiction, traditional methods use a one-time geometric scaling to determine the size of the physical model. However, when the geometric similarity ratio between the prototype and the physical model (CL = Lprototype / Lphysical model) is extremely large (e.g., reaching a factor of 1000), the dimensions of some key local geological structures in the physical model become so small that they cannot be fabricated and represented in the physical model. For example, a rock block with a size of 1 meter in the prototype has a theoretical size of only 0.001 meters (1 millimeter) in a physical model with CL=1000. For fractured rock slopes containing numerous such blocks, fabricating 1-millimeter "blocks" and simulating their structural surfaces is technically almost impossible, and their mechanical behavior no longer conforms to macroscopic geotechnical laws, leading to distortion of the physical model.

[0004] Therefore, there is an urgent need for a new method of physical model building that can reflect the macroscopic geological structure and reasonably characterize and control the mechanical effects of key structures (such as rock blocks and joints) within a limited physical model space. Summary of the Invention

[0005] The purpose of this application is to provide a method, equipment, medium and product for constructing physical models based on geomechanics, which can reflect macroscopic geological structures and reasonably characterize and control the mechanical effects of key structures within a limited physical model space.

[0006] To achieve the above objectives, this application provides the following solution: Firstly, this application provides a method for constructing a physical model based on geomechanics, the method comprising: The first geometric similarity ratio is determined based on the overall dimensions of the prototype geological body and the dimensions of the physical model box; and the dimensions of the physical model are determined based on the first geometric similarity ratio. Based on the key structure of the physical model, and the second geometric similarity ratio is determined based on the manufacturability and observability of mechanical behavior; and the actual manufacturing size of the key structure in the physical model is determined based on the second geometric similarity ratio, resulting in the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; Based on the first geometric similarity ratio, a dominant similarity law is established, and the baseline physical and mechanical parameters of the main material of the physical model are determined. Based on the first geometric similarity ratio and the second geometric similarity ratio, the mechanical strength parameters of the enlarged key structure are corrected; The main body of the physical model is built based on the baseline physical and mechanical parameters and the dimensions of the physical model, and the key structure is built based on the corrected mechanical strength parameters and the actual manufacturing dimensions of the key structure. Based on the prototype geological body to be tested, the key structures after construction are integrated with the main body of the physical model after construction to obtain the physical model after construction.

[0007] Secondly, this application provides a geomechanical-based physical model building device, which includes: The first scaling module is used to determine the first geometric similarity ratio based on the overall size of the prototype geological body to be tested and the size of the physical model box; and to determine the size of the physical model based on the first geometric similarity ratio. The second scaling module is used to determine the second geometric similarity ratio based on the key structure of the physical model and the manufacturability and observability of mechanical behavior; and to determine the actual manufacturing size of the key structure in the physical model based on the second geometric similarity ratio, thus obtaining the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; The reference physical and mechanical parameters determination module is used to establish the dominant similarity law based on the first geometric similarity ratio and determine the reference physical and mechanical parameters of the main material of the physical model; The correction module is used to correct the mechanical strength parameters of the enlarged key structure based on the first geometric similarity ratio and the second geometric similarity ratio; The main body and key structure building module is used to build the main body of the physical model based on the benchmark physical and mechanical parameters and the dimensions of the physical model, and to build the key structure based on the corrected mechanical strength parameters and the actual manufacturing dimensions of the key structure. The physical model building module is used to integrate the key structures built up with the main body of the physical model based on the prototype geological body to be tested, so as to obtain the physical model after construction.

[0008] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned method for constructing a physical model based on geomechanics.

[0009] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the aforementioned method for constructing a physical model based on geomechanics.

[0010] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the aforementioned method for constructing a physical model based on geomechanics.

[0011] According to the specific embodiments provided in this application, this application has the following technical effects: This application provides a method, equipment, medium, and product for constructing physical models based on geomechanics. Addressing the problem in existing technologies where the critical structural dimensions of physical models are too small due to one-time geometric scaling, making it impossible to fabricate and accurately simulate their mechanical behavior, this application proposes a method for constructing and simulating physical models of large-scale geological bodies containing heterogeneous and discretized geological structures, based on hierarchical scaling and mechanical compensation. First, this application determines a first geometric similarity ratio based on the dimensions of the physical model box (experimental device) and the overall dimensions of the prototype geological body to be tested, achieving overall accommodative scaling. Then, to ensure the fabrication and observability of key structures, a second geometric similarity ratio is determined to enlarge the key structures of the overall accommodatively scaled physical model. Based on this, after determining the main material parameters of the physical model according to the dominant similarity law, the mechanical strength parameters of the key structures are corrected based on the first geometric similarity ratio and the second geometric similarity ratio. Quantitative compensation and weakening of the mechanical strength parameters of the enlarged key structures are performed to offset the deviation caused by the size enlargement on the overall mechanical similarity of the physical model. This application decouples the scaling relationship between the "overall size of the physical model" and the "size of the key structures within the physical model" through two independent scaling processes. While ensuring that the physical model can be placed in the experimental device, the fabrication and observability of the key structures are enlarged. Through the accompanying similarity relationship correction technology, the mechanical deviation caused by the secondary scaling is effectively controlled, ensuring that the experimental results still regularly reflect the prototype behavior, which has guiding significance for engineering practice. This application effectively solves the contradiction between "macroscopic similarity" and "microscopic visibility and fabrication" in large-scale geological body physical models, significantly improving the feasibility and regularity of physical model experiments, and has important guiding value for the mechanism research and prevention design of high slopes, landslides, and other engineering projects. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a method for constructing a physical model based on geomechanics in one embodiment of this application; Figure 2 This is a schematic diagram illustrating the principle of a physical model construction method based on geomechanics in one embodiment of this application; Figure 3 A schematic diagram of single scaling (CL1) and double scaling (CL2). Figure 3 Part (a) in the text represents the geological structure of the prototype geological body. Figure 3 Part (b) is the theoretical physical model after being scaled down once according to CL1 (the key structure is too small). Figure 3 Part (c) is the physical model built in this application (key structures are enlarged, CL2) <CL1)); Figure 4 This is a diagram illustrating the instability and failure mode of the physical model of the high slope in the embodiment. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] In one exemplary embodiment, such as Figure 1 and Figure 2 As shown, a method for constructing a physical model based on geomechanics is provided, which includes the following steps S101 to S106. Wherein: S101, determine the first geometric similarity ratio based on the overall size of the prototype geological body to be tested and the size of the physical model box; and determine the size of the physical model based on the first geometric similarity ratio; The size of the physical model box serves as a constraint on the experimental setup. The size of the physical model that can be accommodated within the experimental setup is obtained through a first geometric similarity ratio, allowing for overall scaling to address the "accommodation" problem of the physical model. In physical model experiments, geometric boundary conditions are primarily constrained by the size of the physical model box. For scaled-down three-dimensional geological physical models, the minimum value among the length, width, and height of the physical model box is typically used as the controlling dimension to avoid the influence of boundary effects. Specifically, the size Lm1 of the physical model after the first scaling is determined using the formula Lm1 = Lp / CL1; Where Lp is the overall size of the prototype geological body to be tested, and CL1 is the first geometric similarity ratio; S102, based on the key structure of the physical model, and based on the manufacturability and observability of mechanical behavior, determine the second geometric similarity ratio; and based on the second geometric similarity ratio, determine the actual manufacturing size of the key structure in the physical model, and obtain the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; Within the overall framework of the physical model determined by the first scaling, a second geometric similarity ratio CL2 is determined for critical structures that cannot be fabricated at the CL1 scale (such as rock blocks, joints, fissures, weak interlayers, or support structures). CL2 is typically smaller than CL1 (i.e., the magnification), and its value is chosen to ensure that the critical structures are fabricable, installable, and that their mechanical behavior can be effectively observed in the physical model.

[0017] Specifically, the feasibility of fabrication depends on whether the key structure can be accurately reflected in the physical model, i.e., there exists a minimum fabricable size. For example, the block size of the fractured structure in a prototype slope (100m high) is typically less than 40cm. If a 1m high physical model is fabricated using a 1:100 scale, such blocks would be reduced to only 0.4cm, which is impossible with existing techniques. Based on experimental experience, adjusting the block size of the physical model to around 1cm ensures both a high success rate and that the deformation and failure process of the fractured rock mass remains within the effective range of laboratory monitoring equipment at this scale. The size Lm2 of the enlarged critical structure is determined using the formula Lm2 = Lp / CL2; S103, establish the dominant similarity law based on the first geometric similarity ratio, and determine the reference physical and mechanical parameters of the main material of the physical model; S103 specifically includes: S31, Based on the first geometric similarity ratio and the dominant mechanical mechanism, establish the dominant similarity law; the dominant mechanical mechanism includes gravity dominance and stress dominance; Among them, the dominant similarity law usually adopts the gravitational similarity law, which requires that the physical model and the prototype have the same Froude number.

[0018] S32, determine the reference physical and mechanical parameters of the main material of the physical model based on the first geometric similarity ratio and the dominant similarity law.

[0019] The baseline physical and mechanical parameters cover the geometric scales and physical and mechanical dimensions that are of primary concern in physical model tests. Based on the similarity ratio of each parameter, the scaled-down physical model dimensions and material properties of the prototype geological body can be determined. Taking the shear failure mode as an example, the physical model design needs to focus on controlling its shear strength parameters, namely the internal friction angle and cohesion. Specifically, the dominant similarity law is the gravitational similarity law. The first geometric similarity ratio CL1 is the length similarity ratio, the unit weight similarity ratio Cγ=1, and the stress similarity ratio Cσ, strength similarity ratio Cc, and elastic modulus similarity ratio CE are all equal to CL1, as shown below: (1) Bulk density similarity ratio: Cγ = γp / γm = 1 (requires that the bulk density of the physical model material is the same as that of the prototype); (2) Stress similarity ratio: Cσ = σp / σm = CL1; (3) Strength similarity ratio: Cc = Cp / Cm = CL1 (cohesive similarity ratio); (4) Strength similarity ratio: C = Φp / Φm = 1 (The material of the physical model should have a density that is basically the same as that of the prototype). (5) Similarity ratio of elastic modulus: CE = Ep / Em = CL1; Where Cγ is the unit weight similarity ratio, γp is the unit weight of the prototype geological body, γm is the unit weight of the physical model, Cσ is the stress similarity ratio, σp is the prototype stress, σm is the physical model stress, Cc is the strength parameter cohesion similarity ratio, Cp is the cohesion of the prototype geological body, Cm is the cohesion of the physical model, and C... For the strength parameter, the internal friction angle similarity ratio is given by Φp, where Φp is the prototype internal friction angle, Φm is the physical model internal friction angle, CE is the elastic modulus similarity ratio, Ep is the prototype elastic modulus, and Em is the physical model elastic modulus. Based on the above similarity ratio, select or formulate a physical model material that meets the density requirements and whose mechanical strength parameters (cohesion, internal friction angle) and deformation parameters (elastic modulus E) can be scaled according to CL1.

[0020] S104, Based on the first geometric similarity ratio and the second geometric similarity ratio, the mechanical strength parameters of the enlarged key structure are corrected; The enlarged key structures use different scaling ratios CL2, and their size-related physical quantities such as stress and strength no longer strictly follow the similarity law based on CL1. Therefore, active and quantitative compensation and correction are required; S104 specifically includes: The correction factor k is determined using the formula k = CL2 / CL1; Wherein, CL2 is the second geometric similarity ratio, and CL1 is the first geometric similarity ratio.

[0021] The corrected physical model material strength is: Cn - correction = Cn (CL2 / CL1) = Cn k; Wherein, Cn is the physical model material strength calculated strictly according to the CL1 similarity law, and Cn-correction is the strength value that should actually be used after correction; The above formula means that when the key structural dimensions are enlarged by a factor of (CL1 / CL2), in order to make its mechanical effects in the overall physical model (such as the ratio of destructive driving force to resistance force) equivalent to the theoretical case scaled by CL1, its strength needs to be reduced proportionally.

[0022] The physical model is obtained by scaling the blocks twice, using CL1 and CL2. For the structural surfaces between the blocks, the main focus is on mechanical strength parameters, and their shear strength parameters (cohesion, internal friction angle) also need to be corrected according to the above principles. Simultaneously, the geometric features of the structural surfaces, such as roughness Jrc and thickness Jh (weak structural surfaces have a certain thickness), should also be scaled and simulated according to CL2, not CL1, as detailed below: (1) The actual cohesion of the structural plane to be used after correction: Jcm = Jcp (CL2 / CL1); (2) The corrected internal friction angle of the structural surface should be: J m = J p (CL2 / CL1); (3) The actual surface roughness to be used after correction: Jrcm = Jrcp (CL2 / CL1); (4) The actual thickness of the structural surface to be used after correction: Jhm = Jhp (CL2 / CL1); Where Jcp is the cohesive force of the structural plane of the prototype geological body, Jcm is the cohesive force of the structural plane of the physical model, and J p is the internal friction angle of the structural plane of the prototype geological body, J m is the internal friction angle of the structural surface of the physical model, Jrcp is the surface roughness of the structural surface of the prototype geological body, Jrcm is the surface roughness of the structural surface of the physical model, Jhp is the surface thickness of the structural surface of the prototype geological body, and Jhm is the surface thickness of the structural surface of the physical model.

[0023] S105, build the main body of the physical model based on the benchmark physical and mechanical parameters and the size of the physical model, and build the key structure based on the corrected mechanical strength parameters and the actual manufacturing size of the key structure (such as making "enlarged" rock blocks with specific proportions of gypsum, barite powder, sand and other materials, and treating their surface to simulate the corrected structural surface strength). S106, based on the relative positional relationship of the prototype geological body to be tested, the key structures after construction are integrated with the main body of the constructed physical model to obtain the constructed physical model, such as... Figure 3 As shown.

[0024] Following S106 are: Experiments were conducted on the constructed physical model, and the experimental results were inverted and interpreted based on the dominant similarity law. The experimental results included: destruction phenomena, critical conditions, and evolutionary laws. Loading, monitoring, and data acquisition were performed according to the experimental plan. When analyzing experimental results, it is necessary to clarify that the response of the physical model is the result of the combined effects of "global CL1 scaling" and "local CL2 scaling correction". The validity of this application can be verified by comparing monitoring data (such as displacement field, stress field, and failure mode) with theoretical predictions. Finally, the failure phenomena, critical conditions, and evolution laws of the physical model are inverted to the prototype geological body using the dominant similarity law (based on CL1), thereby obtaining a regular understanding of the prototype engineering behavior and guidance for engineering practice.

[0025] The beneficial effects of this application are as follows: (1) It solves the feasibility problem of physical model making: Through secondary scaling, it becomes possible to characterize micro or micro geological structures in macroscopic large-scale physical models, which greatly expands the scope of application of physical model experiments.

[0026] (2) Balancing macroscopic similarity and local controllability: Under the premise that the overall mechanical response of the physical model basically follows the dominant similarity law, the method quantifies and controls the deviations introduced by process requirements through active modification of local structures, so that the experimental results still have a high degree of regularity and interpretability.

[0027] (3) Highly practical and with clear guiding significance: This method has a clear approach, well-defined steps, and strong operability. It is particularly suitable for studying engineering geological problems such as fractured rock slopes, jointed rock masses, and soil-rock mixtures containing discrete block structures. The results obtained have direct guiding value for understanding the instability mechanism of such geological bodies and optimizing prevention and control schemes.

[0028] like Figure 4 As shown, this application will be further described in detail with reference to a physical model experiment of a steep fractured rock slope.

[0029] The prototype geological features are as follows: slope height Hp = 200 meters, multiple sets of joints are developed within the slope, cutting the rock mass into rhomboid blocks with an average size of Dp = 1.0 meters.

[0030] S1, determine the first scaling (overall accommodative scaling): The maximum height of the laboratory physical model box is 0.8 meters. The first geometric similarity ratio CL1 is determined to be Hp / Hm1 = 200 / 0.8 = 250.

[0031] S2, determine the second scaling (critical structure fabrication capability scaling): If scaled to CL1=250, the theoretical block size Dm1 = 1.0 / 250 = 0.004 m = 4 mm. At this size, it is extremely difficult to fabricate and precisely lay out a large number of regularly shaped blocks with controllable surface properties. Therefore, it was decided to enlarge the block size. Setting CL2 = 100, the actual block size fabricated in the physical model is Dm2 = 1.0 / 100 = 0.01 m = 10 mm. This size is easy to fabricate using molds and can better simulate the interlocking action between blocks.

[0032] S3, Establish the dominant similarity law and determine the benchmark parameters: Using the law of similarity under gravity, CL1=250.

[0033] (1) Cγ=1, requiring the bulk density of the physical model material to be approximately 27 kN / m³. 3 (Same as above)

[0034] (2) Cσ=Cc=CE=CL1=250.

[0035] Therefore, a density of 27 kN / m³ is required. 3 However, the cohesion, internal friction angle, and elastic modulus are all similar to those of the prototype material, which are 1 / 250 of the prototype value. The prototype rock mass strength parameters are approximately: c = 500 kPa. =35°. Therefore, the target material parameter for the theoretical physical model should be: c=2 kPa. =35°. This is achieved through a specific ratio of barite powder, quartz sand, gypsum, and water.

[0036] S4, perform equivalent compensation and correction for key structural similarities: The scaling ratio of the key structure (rock block) is CL2=100, which is inconsistent with the overall scaling ratio CL1=250.

[0037] The strength correction factor is: CL2 / CL1 = 100 / 250 = 0.4.

[0038] Therefore, the strength of the material used to make these "enlarged" blocks should not be the 2 kPa specified in S3, but should be modified to: c-block = 2 kPa 0.4 = 0.8 kPa; c-block represents the corrected material. To ensure experimental results, the internal friction angle can be appropriately reduced. This can be achieved by adjusting the material ratio (e.g., reducing the amount of gypsum and increasing the amount of sand) to ensure that its overall strength index meets the correction requirements.

[0039] The structural surfaces (joints) between blocks are simulated using extremely thin layers of sand or mica powder, and their shear strength must be calibrated through direct shear tests to ensure that they meet the modified strength requirements.

[0040] S5, Construction and Experimentation of Physical Models: (1) According to the size of CL1=250, the slope physical model base is built in the physical model box using the "rock mass" similar material prepared by S3.

[0041] (2) Use the strength-modified material prepared by S4 to cast a large number of 10mm rhomboid blocks.

[0042] (3) These blocks are laid in layers and in an orderly manner on the surface and key areas of the slope physical model according to the original joint orientation to simulate fractured rock mass.

[0043] (4) Install displacement sensors, strain gauges and camera systems for monitoring.

[0044] (5) Induce slope instability by loading at the top of the slope or excavating at the bottom, and record the whole process.

[0045] S6, Analysis and inversion interpretation of experimental results: Experiments showed that the slope first experienced localized rockfall and sliding in the block accumulation area, followed by cracks protruding deeper, eventually forming a continuous composite sliding surface and causing a complete collapse. This failure mode is qualitatively consistent with the instability phenomenon of similar prototypes. The ultimate load or critical excavation depth of the physical model slope was measured to be Fm. Based on the stress similarity ratio Cσ=CL1=250, the ultimate bearing capacity or critical excavation depth of the prototype, Fp = Fm, was calculated. 250. This result can provide a quantitative reference for the stability evaluation and support design of this type of slope.

[0046] In summary, this application successfully reproduced the instability process of a macroscopic slope within a limited experimental space through two scaling and active corrections, and captured the role mechanism of the key structure (fractured blocks) in instability. The resulting regularities have important guiding significance for engineering practice.

[0047] Based on the same inventive concept, this application also provides a geomechanical physical model building device for implementing the above-mentioned geomechanical physical model building method. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more geomechanical physical model building device embodiments provided below can be found in the limitations of the geomechanical physical model building method described above, and will not be repeated here.

[0048] In one exemplary embodiment, a geomechanical-based physical model building device is provided, comprising: The first scaling module is used to determine the first geometric similarity ratio based on the overall size of the prototype geological body to be tested and the size of the physical model box; and to determine the size of the physical model based on the first geometric similarity ratio. The second scaling module is used to determine the second geometric similarity ratio based on the key structure of the physical model and the manufacturability and observability of mechanical behavior; and to determine the actual manufacturing size of the key structure in the physical model based on the second geometric similarity ratio, thus obtaining the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; The reference physical and mechanical parameters determination module is used to establish the dominant similarity law based on the first geometric similarity ratio and determine the reference physical and mechanical parameters of the main material of the physical model; The correction module is used to correct the mechanical strength parameters of the enlarged key structure based on the first geometric similarity ratio and the second geometric similarity ratio; The main body and key structure building module is used to build the main body of the physical model based on the benchmark physical and mechanical parameters and the dimensions of the physical model, and to build the key structure based on the corrected mechanical strength parameters and the actual manufacturing dimensions of the key structure. The physical model building module is used to integrate the key structures built up with the main body of the physical model based on the prototype geological body to be tested, so as to obtain the physical model after construction.

[0049] In an exemplary embodiment, a computer device is provided, which may be a server or a terminal. The computer device includes a processor, memory, input / output interfaces (I / O), and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is connected to the system bus via the I / O interfaces. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The I / O interfaces of the computer device are used for exchanging information between the processor and external devices. The communication interface of the computer device is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for constructing a physical model based on geomechanics.

[0050] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0051] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0052] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0053] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0054] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0055] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0056] In this application, all actions to acquire signals, information, or data are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with the authorization granted by the owner of the relevant device.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for constructing a geomechanics-based physical model, characterized by, The method for constructing physical models based on geomechanics includes: The first geometric similarity ratio is determined based on the overall dimensions of the prototype geological body and the dimensions of the physical model box; and the dimensions of the physical model are determined based on the first geometric similarity ratio. Based on the key structure of the physical model, and the second geometric similarity ratio is determined based on the manufacturability and observability of mechanical behavior; and the actual manufacturing size of the key structure in the physical model is determined based on the second geometric similarity ratio, resulting in the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; Based on the first geometric similarity ratio, a dominant similarity law is established, and the baseline physical and mechanical parameters of the main material of the physical model are determined. Based on the first geometric similarity ratio and the second geometric similarity ratio, the mechanical strength parameters of the enlarged key structure are corrected; The main body of the physical model is built based on the baseline physical and mechanical parameters and the dimensions of the physical model, and the key structure is built based on the corrected mechanical strength parameters and the actual manufacturing dimensions of the key structure. Based on the prototype geological body to be tested, the key structures after construction are integrated with the main body of the physical model after construction to obtain the physical model after construction.

2. The geomechanics-based physical model building method of claim 1, wherein, The second geometric similarity ratio is less than the first geometric similarity ratio.

3. The geomechanics-based physical model building method of claim 1, wherein, The process of establishing a dominant similarity law based on the first geometric similarity ratio and determining the baseline physical and mechanical parameters of the main material of the physical model specifically includes: Based on the first geometric similarity ratio and the dominant mechanical mechanism, a dominant similarity law is established; the dominant mechanical mechanism includes gravity dominance and stress dominance. The baseline physical and mechanical parameters of the main material of the physical model are determined based on the first geometric similarity ratio and the dominant similarity law.

4. The method for constructing a physical model based on geomechanics according to claim 1, characterized in that, The correction of the mechanical strength parameters of the key structure based on the first geometric similarity ratio and the second geometric similarity ratio specifically includes: The correction factor k is determined using the formula k = CL2 / CL1; Wherein, CL2 is the second geometric similarity ratio, and CL1 is the first geometric similarity ratio.

5. The method for constructing a physical model based on geomechanics according to claim 1, characterized in that, The mechanical strength parameters include: cohesion and internal friction angle.

6. The method for constructing a physical model based on geomechanics according to claim 1, characterized in that, Based on the prototype geological body to be tested, the key structures after construction are integrated with the main body of the constructed physical model to obtain the constructed physical model, which then includes: Experiments were conducted on the constructed physical model, and the experimental results were inverted and interpreted based on the dominant similarity law; the experimental results included: destruction phenomena, critical conditions, and evolution laws.

7. A physical model construction device based on geomechanics, characterized in that, The geomechanical-based physical model building equipment includes: The first scaling module is used to determine the first geometric similarity ratio based on the overall size of the prototype geological body to be tested and the size of the physical model box; and to determine the size of the physical model based on the first geometric similarity ratio. The second scaling module is used to determine the second geometric similarity ratio based on the key structure of the physical model and the manufacturability and observability of mechanical behavior; and to determine the actual manufacturing size of the key structure in the physical model based on the second geometric similarity ratio, thus obtaining the enlarged key structure; the first geometric similarity ratio and the second geometric similarity ratio are not equal; The reference physical and mechanical parameters determination module is used to establish the dominant similarity law based on the first geometric similarity ratio and determine the reference physical and mechanical parameters of the main material of the physical model; The correction module is used to correct the mechanical strength parameters of the enlarged key structure based on the first geometric similarity ratio and the second geometric similarity ratio; The main body and key structure building module is used to build the main body of the physical model based on the benchmark physical and mechanical parameters and the dimensions of the physical model, and to build the key structure based on the corrected mechanical strength parameters and the actual manufacturing dimensions of the key structure. The physical model building module is used to integrate the key structures built up with the main body of the physical model based on the prototype geological body to be tested, so as to obtain the physical model after construction.

8. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the geomechanical-based physical model construction method according to any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the geomechanical-based physical model construction method as described in any one of claims 1-6.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the geomechanical-based physical model construction method as described in any one of claims 1-6.

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