Method, system, medium and equipment for correcting roughness of standard contour line

Abstract

The invention belongs to the technical field of computer aided design, and provides a method and system for correcting the roughness of a standard contour line, a medium and equipment. The method comprises the following steps of: digitally processing standard contour lines in literatures, establishing a two-dimensional contour line model, stretching the two-dimensional contour line model along the longitudinal direction in three-dimensional modeling software to obtain a three-dimensional structural plane model of each standard contour line, manufacturing a standard structural plane sample by adopting a numerical control engraving technology based on the three-dimensional structural plane model, and performing three-dimensional modeling on the standard structural plane sample. And carrying out an indoor direct shear test on the standard structural plane samples, and carrying out back calculation on the roughness JRC value of each standard structural plane sample based on the result of the indoor direct shear test so as to correct the roughness of the standard contour line. In the scheme, the rough features of the standard structural plane sample completely depend on the standard contour line, interference of human subjective factors does not exist, and the corrected JRC value of each standard contour line can reflect the real rough degree of the standard contour line more accurately.

Description

Technical Field

[0001] This application relates to the field of computer-aided design technology, and particularly relates to a method, system, medium and device for correcting the roughness of standard contour lines. Background Art

[0002] Barton and Choubey (1977) proposed 10 standard contour lines and their corresponding roughness JRC values. By comparing the contour line to be measured with the standard contour lines, the JRC value of the contour line is determined. This method has been widely recognized in the engineering and academic fields and is recommended by the International Society for Rock Mechanics (ISRM 1981).

[0003] A large number of scholars and engineers use standard contour lines to determine the rough characteristics of the rock mass outcrop surface, thereby evaluating the engineering stability of the rock mass. Based on the contour line pictures and their corresponding JRC values provided by Barton, many researchers have analyzed the morphological characteristics of two-dimensional contour lines and explored the relationship between morphological parameters and mechanical behavior. Standard contour lines have had and will continue to have a significant impact in the field of quantifying the morphology of structural planes.

[0004] However, whether the JRC values of the standard contour lines measured by Barton can truly reflect their real roughness has not yet attracted the attention of the industry. Summary of the Invention

[0005] The purpose of this application is to provide a method, system, medium and device for correcting the roughness of standard contour lines to solve or alleviate the problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] In a first aspect, this application provides a method for correcting the roughness of standard contour lines, including:

[0008] Digitally process each standard contour line and establish a two-dimensional contour line model based on the results of the digital processing;

[0009] In a three-dimensional modeling software, stretch the two-dimensional contour line model longitudinally to obtain a three-dimensional structural plane model of each standard contour line;

[0010] Based on the three-dimensional structural plane model, use numerical control engraving technology to produce standard structural plane specimens and conduct in-door direct shear tests on the standard structural plane specimens;

[0011] Based on the results of the in-door direct shear tests, back-calculate the roughness JRC values of each standard structural plane specimen to determine the corrected JRC values of each standard contour line.

[0012] In combination with the first aspect, in some possible implementation manners, a two-dimensional contour line model is established based on the result of digital processing, specifically:

[0013] Import the coordinate data of each standard contour line obtained by digitization into two-dimensional modeling software, and add rectangular frames at both ends of the contour line to establish a two-dimensional contour line model.

[0014] In combination with the first aspect, in some possible implementation manners, based on the three-dimensional structural plane model, a standard structural plane specimen is manufactured by using numerical control engraving technology, specifically:

[0015] Write a tool path according to the three-dimensional structural plane model, and manufacture a standard structural plane specimen by using numerical control engraving technology.

[0016] In combination with the first aspect, in some possible implementation manners, the roughness JRC values of each standard structural plane specimen are back-calculated based on the result of the direct shear test in the laboratory to determine the true JRC values of each standard contour line, specifically:

[0017] Back-calculate the roughness JRC values of each standard structural plane specimen based on the result of the direct shear test in the laboratory, and use the roughness JRC values of each standard structural plane specimen as the corrected JRC values of the corresponding standard contour line.

[0018] In combination with the first aspect, in some possible implementation manners, multiple groups of the standard structural plane specimens are prepared for each of the standard contour lines;

[0019] Correspondingly, the roughness JRC values of each standard structural plane specimen are back-calculated based on the result of the direct shear test in the laboratory to determine the true JRC values of each standard contour line, specifically:

[0020] Back-calculate the roughness JRC values of each standard structural plane specimen based on the result of the direct shear test in the laboratory, and calculate the average value of the roughness JRC values of the multiple standard structural plane specimens corresponding to each standard contour line as the corrected JRC value of the standard contour line.

[0021] In combination with the first aspect, in some possible implementation manners, according to the roughness coefficient-compressive strength JRC-JCS model, the roughness JRC values of each standard structural plane specimen are back-calculated based on the result of the direct shear test in the laboratory.

[0022] In combination with the first aspect, in some possible implementation manners, the method further includes:

[0023] Based on the analysis of topographic parameters and the result of the direct shear test in the laboratory, using the representative topographic parameters or shear strength as the evaluation index, the entropy weight-TOPSIS method is used to determine the roughness ranking order of each standard contour line;

[0024] Compare the roughness ranking order of each standard contour line with the original roughness ranking order of each standard contour line to verify the accuracy and objectivity of the original roughness of the standard contour line.

[0025] In a second aspect, the present embodiment provides a system for correcting the roughness of a standard contour line, including:

[0026] A digitization unit configured to digitize each standard contour line and establish a two-dimensional contour line model based on the result of the digitization process;

[0027] A three-dimensional modeling unit configured to stretch the two-dimensional contour line model longitudinally in three-dimensional modeling software to obtain a three-dimensional structural surface model of each standard contour line;

[0028] A specimen production and testing unit configured to produce a standard structural surface specimen using numerical control engraving technology based on the three-dimensional structural surface model and conduct an indoor direct shear test on the standard structural surface specimen;

[0029] An actual value calculation unit configured to back-calculate the roughness JRC value of each standard structural surface specimen based on the result of the indoor direct shear test to determine the corrected JRC value of each standard contour line.

[0030] In a third aspect, the present embodiment provides an electronic device, including: a memory for storing instructions executed by one or more processors of the electronic device; a processor, when the processor executes the instructions in the memory, enabling the electronic device to implement the steps of the method described in any one of the above embodiments.

[0031] In a fourth aspect, the present embodiment provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed on a computer, the steps of the method described in any one of the above embodiments are implemented.

[0032] The technical solution of the embodiment of the present application has the following beneficial effects:

[0033] When the 10 standard contour lines proposed by Barton have been widely recognized in the engineering and academic fields, the inventor dared to break through the convention and carried out experimental research. By using indoor tests to check the true roughness of the standard contour lines, and on the basis of finding that there are differences between the true roughness of the standard contour lines measured in indoor tests and the roughness of the standard contour lines measured in Barton's literature, a method for correcting the roughness of the standard contour lines was proposed. By digitally processing each standard contour line, a three-dimensional structural plane model of each standard contour line was obtained, and then a standard structural test specimen was made using numerical control engraving technology. The JRC value of the roughness of each standard structural test specimen was back-calculated through indoor direct shear tests. In this scheme, the rough characteristics of the standard structural test specimen completely depend on the standard contour line, and there is no interference from subjective human factors. Therefore, it is reasonable to equate the JRC value of the standard contour line with the JRC value of the standard structural test specimen (i.e., the corrected JRC value). The corrected JRC values of each standard contour line can more accurately reflect the true roughness of the standard contour line, providing a more reasonable standard contour line roughness for industrial applications. Description of the Drawings

[0034] Figure 1 Schematic diagram of the test process carried out by Barton.

[0035] Figure 2 Schematic diagram of an electronic device provided according to some embodiments of the present application.

[0036] Figure 3 Schematic flow chart of a method for correcting the roughness of a standard contour line provided according to some embodiments of the present application.

[0037] Figure 4 Schematic diagram of the pictures of 10 standard contour lines provided by Barton et al. in the literature.

[0038] Figure 5 Schematic diagram of the original picture of the 10th contour line.

[0039] Figure 6 Schematic flow chart of numerical control engraving.

[0040] Figure 7 Schematic diagram of the engraving process of a standard structural test specimen provided according to another embodiment.

[0041] Figure 8 Schematic diagram of the relationship between each topographic parameter and the roughness JRC.

[0042] Figure 9 Schematic diagram of the damage situation of specimens C1 - C10 under a normal stress of 3 MPa.

[0043] Figure 10Schematic diagram of the shear process, damage condition and shear curve of specimen C10 under a normal stress of 3 MPa.

[0044] Figure 11 Schematic diagram of the shear process, damage condition and shear curve of specimen C1 under a normal stress of 1 MPa.

[0045] Figure 12 Schematic diagram of the damage images, shear test curves of specimen C10 under different normal stresses, and the relationship curve of the peak shear stress - normal stress of all specimens.

[0046] Figure 13 Schematic diagram of the sorting results of the roughness of the morphological parameters and peak strength. Detailed implementation manners

[0047] By statistically analyzing 80 groups of JRC quantification models established based on statistical parameters that can be found in previous literature, it is found that the vast majority of models are completely constructed relying on 10 standard contour lines, and the remaining small number of models also take the 10 standard contour lines as an important part of the database. It can be seen that the use of standard contour lines to determine the roughness of unknown rocks has been widely recognized in the academic community and is widely used in engineering. Therefore, the true JRC value of the standard contour line is particularly important, which is of great significance for accurately understanding the morphological characteristics of the structural plane and the internal relationship between its mechanical properties. However, scholars have not paid attention to the problems existing in the JRC value of the standard contour line, nor have they delved into the objective reasons behind these potential problems.

[0048] Figure 1 Schematic diagram of the test process carried out by Barton, where: (a) 3D reconstruction diagram of the structural plane; (b) Schematic diagram of the shear test, that is, applying a normal stress 1 in the vertical direction to the upper structural plane 3 and a lateral shear stress 2 to the lower structural plane 4 to conduct the shear test; (c) Representative contour line and its JRC value. Combining Figure 1 , the test research carried out by Barton is introduced as follows: (1) 136 groups of structural plane specimens are chiseled from the outcropping surface of natural rock masses, including slate, aplite, gneiss, granite, hornfels, aplite, soapstone. (2) For each specimen, three contour lines (i.e., representative contour lines) are extracted along the shear direction using a contour recorder, as shown in (a) of Figure 1 . (3) Direct shear tests are carried out on 136 groups of specimens respectively (as shown in (b) of Figure 1 ), and the JRC values of each specimen are back-calculated according to the JRC-JCS model, and the JRC value of each contour line is equated to the JRC value of the specimen, as shown in Figure 1As shown in (c) of the middle figure. (4) According to the JRC values, the structural plane specimens are divided into 10 groups: 0 - 2, 2 - 4, 4 - 6, 6 - 8, 8 - 10, 10 - 12, 12 - 14, 14 - 16, 16 - 18, 18 - 20. (5) Extract 1 contour line (i.e., the standard contour line) in each group to represent the roughness of the specimens in that group, and its JRC value is the JRC value of the corresponding specimen.

[0049] From the above test process, it can be seen that in the experimental research carried out by Barton, the selection process of the representative contour line and the standard contour line is entirely subjectively determined by the experimenters, and these contour lines are difficult to represent the overall roughness of the structural plane. Therefore, it is debatable to equate the JRC values of the representative contour line and the standard contour line with the JRC value of the rough structural plane specimen.

[0050] In other words, by analyzing the experimental research process of Barton in extracting 10 standard contour lines, the inventor found that: the experimenters artificially extracted three contour lines on the structural plane to characterize the overall roughness. These three contour lines are called representative contour lines, and the JRC values of these contour lines are all equal to the overall JRC value of the structural plane calculated by back-analysis through the direct shear test. One contour line is artificially selected from a series of representative contour lines as the standard contour line. Obviously, these contour lines are difficult to represent the overall roughness of the structural plane, and it is debatable to equate the JRC value of the contour line with the JRC value of the structural plane. Therefore, it is necessary to check and correct the true roughness of the standard contour line.

[0051] In view of this, in this embodiment, by digitally processing each standard contour line, a three-dimensional structural plane model of each standard contour line is obtained, and then a standard structural plane specimen is made using numerical control engraving technology. Through the indoor direct shear test, the roughness JRC value of each standard structural plane specimen is calculated by back-analysis to obtain the corrected JRC value of each standard contour line. The correction of the roughness of the standard contour line is beneficial to accurately understand the morphological characteristics of the structural plane and the internal relationship between its mechanical properties, and provides a more accurate reference for relevant theoretical research and practical applications in rock engineering (such as tunnels, underground engineering, etc.).

[0052] The terms "first", "second", "third", "fourth", etc. in the description, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0053] Reference to "embodiments" in this specification means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0054] Embodiments of the present application will be described below with reference to the accompanying drawings.

[0055] Embodiments of the present application can be applied to Figure 2 the electronic devices shown in the figure. The electronic device can be, but is not limited to, mobile terminals such as mobile phones, tablet computers, handheld computers, personal digital assistants (PDAs), etc., smart home devices such as smart TVs, smart cameras, wearable devices such as smart bracelets, smart watches, smart glasses, or other computer devices such as desktop computers, laptop computers, ultra-mobile personal computers (UMPCs), netbooks, and smart screens.

[0056] As Figure 2 shown in the figure, the electronic device 200 may include one or more of the following components: a processor 201, a memory 203, a communication interface 202, and a communication bus 204. Among them, the memory 203 may be connected to the processor 201 through the bus 204. The bus can transfer data between the processor 201 and the memory 203. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0057] The processor 201 may include one or more processing cores. The processor 201 can connect various parts within the entire electronic device 200 using various interfaces and circuits. By running or executing instructions, programs, code sets, or instruction sets stored in the memory 203, and by invoking the data stored in the memory 203, it can perform various functions of the electronic device 200 and process data. Exemplarily, the processor 201 may include an application processor (AP), a modem processor, a CPU, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a field-programmable gate array (FPGA), a programmable logic array (PLA), and / or a neural-network processing unit (NPU), etc. Among them, the CPU mainly processes the operating system, user interface, and application programs, etc.; the GPU is responsible for rendering and drawing the content to be displayed; the NPU is used to implement artificial intelligence (AI) functions; the modem is used to process wireless communications. Different processing units can be independent devices or integrated in one or more processors. For example, the multiple processing units shown above are all integrated in one SoC, or the AP is a separate semiconductor chip and the other processing units are integrated in one SoC. This application does not make any limitations in this regard.

[0058] The memory 203 may include a random access memory (RAM), may also include a read-only memory (ROM), and may further include a non-transitory computer-readable storage medium. The memory 203 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 203 may include a program storage area and a data storage area. Among them, the program storage area can store instructions for implementing the operating system, instructions for at least one function, such as the method for correcting the roughness of the standard profile line, etc.; the data storage area can store the data created according to the use of the electronic device 200, such as the input data of the standard profile line, etc.

[0059] In addition, those skilled in the art can understand that the structure of the electronic device 200 shown in the above drawings does not limit the electronic device 200. The electronic device may include more or fewer components than shown in the drawings, or combine certain components, or have different component arrangements. For example, the electronic device 200 also includes components such as a microphone, a speaker, a radio frequency circuit, a sensor, an audio circuit, a power supply, and a Bluetooth module, which will not be elaborated here.

[0060] This embodiment provides a method for correcting the roughness of standard contour lines, as Figure 3 shown, the method includes:

[0061] Step S101: Digitize each standard contour line and establish a two-dimensional contour line model based on the results of the digitization process.

[0062] It should be noted that in this embodiment, the standard contour lines refer to the 10 standard contour lines proposed by Barton and Choubey (1977).

[0063] Here, the digitization process refers to converting the 10 standard contour lines provided by Barton and Choubey (1977) in the literature into a digital format for analysis and processing in a computer.

[0064] In this embodiment, the digitization process can be achieved by a digitization method based on image processing.

[0065] Specifically, Figure 4 is a schematic diagram of the 10 standard contour line pictures provided by Barton et al. in the literature. As Figure 4 shown, Barton and Choubey (1977) provided pictures of 10 standard contour lines in the literature. Each data point in the contour line is identified by the GetData GraphDigitizer software. Barton and Choubey (1977) calibrated the standard contour lines to the horizontal plane, and the contour line fitting plane is consistent with the horizontal plane. The digitization process for the 10 standard contour lines is introduced as follows:

[0066] (1) Use the GetData Graph Digitizer software to obtain the contour line coordinates. The 10 standard contour lines are respectively intercepted from the PDF-format literature text and stored as 10 JPG-format picture files. Figure 5The original picture of the 10th contour line is shown, where A, B, C, and D represent 4 boundary points respectively. The file is imported into the GetData Graph Digitizer software, and through the "Grid Settings" command, the ratio of line segment AC to line segment AB is determined to be 6.25%. Since the actual length of line segment AB is 100 mm, the actual length of line segment AC can be obtained as 6.25 mm through this proportional relationship. Then, points A and B are respectively specified as X min = 0 and X max = 100 mm, and points A and C are specified as Y min = 0 and Y max = 6.25 mm. The "Digitize area" module is used to draw the grid with the minimum spacing to obtain the coordinates of the intersections of the grid and the contour line.

[0067] (2) Use MATLAB software to perform secondary processing on the contour line coordinates. Use MATLAB to read the coordinate point file, and rotate the contour line data by a certain angle to achieve the leveling process of the contour line, so that the center line of each contour line is in a horizontal position. Refer to Figure 4 As shown, the black dashed line segment represents the initial contour line recorded by Barton et al. in the literature, and the black solid line segment represents the leveled contour line. In the X-axis direction, the line segment is divided into 200 regions at intervals of 0.5 mm, and the contour line data with a sampling interval of 0.5 mm is obtained by using the linear interpolation method.

[0068] (3) Use the root mean square of the first derivative of the contour line Z 2 to verify the rationality of the digitization result. The digitization result of the standard contour line is obtained from the literature screenshot, and its data reliability needs to be further verified. Existing literature has conducted extensive research on 10 standard contour lines and calculated the topography parameters of each contour line. Among them, the root mean square of the first derivative Z 2 is one of the most representative topography parameters. By comparing the calculation results of this embodiment with the existing literature, it can be seen that the calculation results of this embodiment are relatively consistent with the existing literature, and the digitization result of the standard contour line is very good and can be used for further research.

[0069] The digitization process obtains the coordinate data of the standard contour line, that is, the coordinates of each sampling point. Subsequently, the coordinate data of each standard contour line obtained by digitization is imported into the two-dimensional modeling software, and rectangular frames are added at both ends of the contour line to establish a two-dimensional contour line model, as shown in Figure 6 (a) shown.

[0070] For example, the coordinate data of the standard contour line can be imported into AutoCAD software, and rectangular frames are added at both ends of the contour line to establish a two-dimensional contour line model.

[0071] Step S102: In the 3D modeling software, stretch the 2D contour line model longitudinally to obtain the 3D structural surface model of each standard contour line.

[0072] Exemplarily, the 2D model (2D contour line model) can be imported into the Soildworks software and stretched longitudinally (i.e., in the Y-axis direction) to form a 3D structural surface model, as Figure 6 shown in (b) of

[0073] Step S103: Based on the 3D structural surface model, use numerical control carving technology to produce standard structural surface specimens and conduct indoor direct shear tests on the standard structural surface specimens.

[0074] It should be noted that the standard structural surface specimen refers to the specimen made based on the standard contour line, which is different from the structural surface specimen made based on natural rock. By making the standard structural surface specimen, the rough characteristics of the standard contour line can be accurately studied, and the true roughness JRC value of the standard contour line can be obtained.

[0075] Furthermore, the tool path can be programmed according to the 3D structural surface model, and numerical control carving technology can be used to produce standard structural surface specimens.

[0076] Here, the numerical control carving technology controls the engraving machine through the numerical control system, and uses the movement of the mechanical equipment to transform the designed 3D model into an actual structural surface specimen. In this embodiment, the 2D coordinates of the standard contour line are first obtained through digital processing, and then the 3D structural surface model is generated using 3D modeling software. Furthermore, the standard structural surface specimen is generated through numerical control carving technology to study the true roughness JRC of the standard contour line.

[0077] Programming the tool path according to the 3D structural surface model and using numerical control carving technology to produce the structural surface specimen can perform precise machining according to the 3D structural surface model, ensuring a high degree of restoration of the geometric shape and texture of the structural surface.

[0078] For the consideration of both carving efficiency and machine protection, a tool with a diameter of 10 mm is used to rough cut the rock, leaving a carving allowance of 0.5 mm, and then a 1-mm tool is used for fine carving, as Figure 6 shown in (c) and (d) of Figure 6 and (e) of

[0079] The standard contour lines are numbered C1 - C10. Four groups of structural surface specimens (i.e., standard structural surface specimens) are prepared for each contour line. Among them, three groups are used for conducting indoor direct shear tests, and the other group is used as a spare specimen, resulting in a total of 40 specimens.

[0080] Figure 7 Another embodiment of the engraving process of the standard structural surface specimen is shown. Among them, (a) is the 3D point cloud, (b) is the extension of the standard contour line, (c) is the numerical control engraving, and (d) is the finished product display of the standard structural surface specimen. In this embodiment, the engraving process of the standard structural surface specimen includes:

[0081] (1) Extend the 10 standard contour lines in the Y direction (longitudinal) to obtain a three-dimensional structural surface model. The projection of this model on the XOZ plane is the standard contour line, the projection on the XOY plane is a parallelogram, and the lengths in the X and Y directions are both 100 mm.

[0082] (2) Program the tool path according to the three-dimensional structural surface model and use numerical control engraving technology to produce the extended structural surface specimen (i.e., the standard structural surface specimen).

[0083] (3) Conduct a direct shear test.

[0084] Indoor direct shear tests are carried out using a KYZW - 100 rock weak plane direct shear instrument under three levels of normal stress (1 Mpa, 2 Mpa, and 3 Mpa), and the axial loads are 10 KN, 20 KN, and 30 KN respectively. The specific test process is as follows: (a) Place the standard structural surface specimen inside the shear box, with the weak surface area located between the upper and lower shear boxes to ensure that the weak surface area can move freely. Install a sliding bearing between the shear box and the vertical load transfer device to reduce the influence of the friction generated during the shear movement on the test results. (b) Place the entire device on the testing machine and apply the normal force until the design value in the constant normal load control mode, with the application speed of the normal force being 0.5 KN / s. (c) Set the tangential preloading. Before the tangential force is officially applied, pre - contact the shear box first, and the target value of the pre - pressure is set to 0.1 KN, with the loading speed being 0.01 KN / s. (d) Conduct the test in the displacement control mode, set the target displacement to 8 mm, and the control system applies the tangential load with a shear rate of 0.01 mm / s. (e) The test terminates when the shear displacement reaches 8 mm. During the test process, record parameters such as the normal load, normal displacement, tangential force, and tangential displacement to obtain the results of the indoor direct shear test, as shown in Table 1, for subsequent analysis and processing.

[0085] Table 1 Test Results of Standard Structural Surface Direct Shear Test

[0086]

[0087]

[0088] Step S104: Back-calculate the JRC values of the roughness of each standard structural surface sample based on the results of the indoor direct shear test to determine the corrected JRC values of each standard contour line.

[0089] Among them, back-calculating the JRC values of the roughness of each standard structural surface sample based on the results of the indoor direct shear test specifically includes:

[0090] For 10 standard contour lines, control the sampling interval to be 0.5 mm, and calculate the morphological parameters of the 10 standard contour lines respectively. The results are as follows:

[0091] Table 2 Morphological parameters of standard contour lines

[0092]

[0093]

[0094] According to the results in the above table, establish the relationship between the morphological parameters and the joint roughness coefficient (i.e., roughness) JRC, that is, obtain the fitting curve between the morphological parameters and the roughness coefficient JRC, as Figure 8 shown. According to each fitting curve, the JRC values of the roughness of each standard structural surface sample can be calculated.

[0095] All morphological parameters can be divided into two categories, namely, morphological parameters related to height and morphological parameters related to angle. As Figure 8 shown, the angle parameters are generally closely related to JRC, and each data point is closely around the fitting curve, and the correlation coefficient is generally higher than 0.9; the height parameters are generally not closely related to JRC, and some data points are far from the fitting curve, and the correlation coefficient is generally lower than 0.75.

[0096] After calculating the JRC value, there are two specific implementation methods to determine the corrected JRC value of each standard contour line. One is to directly use the JRC value of the roughness of each standard structural surface sample as the corrected JRC value, that is, equate the JRC value of the standard contour line to the JRC value of the extended structural surface; the other is to take the average value of the JRC values of the roughness of multiple standard structural surface samples as the corrected JRC value. Specifically:

[0097] In some embodiments, back-calculate the JRC values of the roughness of each standard structural surface sample based on the results of the indoor direct shear test to determine the true JRC value of each standard contour line. Specifically: Back-calculate the JRC values of the roughness of each standard structural surface sample based on the results of the indoor direct shear test, and use the JRC values of the roughness of each standard structural surface sample as the corrected JRC values of the corresponding standard contour lines.

[0098] In some other embodiments, multiple groups of the standard structural plane specimens are prepared for each of the standard contour lines; correspondingly, the JRC values of the roughness of each standard structural plane specimen are back-calculated based on the results of the indoor direct shear test to determine the true JRC values of each standard contour line. Specifically, the JRC values of the roughness of each standard structural plane specimen are back-calculated based on the results of the indoor direct shear test, and the average value of the JRC values of the roughness of the multiple standard structural plane specimens corresponding to each standard contour line is calculated as the corrected JRC value of the standard contour line.

[0099] Further, the method for back-calculating the JRC value is as follows: According to the roughness coefficient - compressive strength JRC-JCS model, the JRC values of the roughness of each standard structural plane specimen are back-calculated based on the results of the indoor direct shear test.

[0100] Among them, the JRC-JCS model is a mechanical model used to describe the relationship between the roughness and shear strength of a rock fault plane or fracture surface. By combining two important parameters, JRC (Joint Roughness Coefficient) and JCS (Joint Compressive Strength), it can more accurately describe the relationship between the roughness and shear strength of a rock fracture surface (such as a fault plane or fracture surface).

[0101] Back-calculating the JRC values of each standard structural plane specimen according to the JRC-JCS model and equating the JRC value of the standard contour line to the JRC value of the extended structural plane (standard structural plane specimen) is simple and efficient. By preparing multiple groups of the standard structural plane specimens and using the mean value of the JRC values of the roughness of multiple standard structural plane specimens as the corrected JRC value, the accuracy of the correction of the JRC value of the roughness can be improved.

[0102] In some embodiments, the method further includes:

[0103] Based on the results of the morphology parameter analysis and the indoor direct shear test, using the representative morphology parameter or shear strength as the evaluation index, the entropy weight-TOPSIS method is used to determine the roughness ranking order of each standard contour line; the roughness ranking order of each standard contour line is compared with the original roughness ranking order of each standard contour line to check the accuracy and objectivity of the original roughness of the standard contour line.

[0104] Among them, the morphology parameter analysis is mainly the analysis of the distribution characteristics of the morphology parameters, including the following:

[0105] First, using existing authoritative literature, by analyzing the geometric meaning, the frequency of occurrence in the literature, and the evaluation effect of each morphology parameter, the most representative morphology parameter is selected.

[0106] In the existing literature, scholars have carried out a large amount of work on the quantification of the structural plane morphology, and the research results have been mainly published in mainstream high-level journals in the industry such as Tunnelling and Underground Space Technology, International Journal of Rock Mechanics and Mining Sciences, and Rock Mechanics and Rock Engineering. Among them, the number of papers published in Rock Mechanics and Rock Engineering is relatively large, which is representative in terms of both quantity and quality. These research results include a large number of morphology parameters, and most of the parameters can only reflect the local information of the structural plane and cannot accurately characterize the morphology characteristics of the structural plane. By analyzing the geometric meanings, frequencies of appearance in the literature, and evaluation effects of each morphology parameter, comprehensively master the influence of each parameter in the industry, and then screen the most representative morphology parameters.

[0107] In this embodiment, the literature materials published in Rock Mechanics and Rock Engineering with the theme of the roughness of the structural plane from January 2019 to March 2024 were counted. The total number of literatures is 552, and the publication volumes from 2019 to 2024 are: 70, 87, 97, 126, 118, and 54 respectively. These research results can be divided into two categories: a small part of the literature materials focus on the quantification and characterization methods of the structural plane; most of the literature materials use the existing classical methods to quantify the surface morphology, and on this basis, study the influence law of the surface morphology on the mechanical properties of rock masses under different occurrence environments. Considering that the statistical parameters are suitable as the input parameters of the neural network, 129 literature materials related to the statistical parameters were analyzed emphatically, and the publication volumes from 2019 to 2024 are: 15, 20, 20, 37, 26, and 11 respectively. It mainly includes 73 morphology parameters, the highest frequency of appearance is 67 times, the frequencies of appearance of 5 parameters exceed 10 times, the frequencies of appearance of 8 parameters exceed 5 times, and the frequencies of appearance of 17 parameters exceed 2 times. The statistical results are shown in Table 1, and Table 1 is as follows:

[0108] Table 1 Morphology Parameters and Their Meanings

[0109]

[0110] The meanings of the main parameters are shown as follows: Z 2 represents the root mean square of the first derivative of the structural plane contour line, represents the direction roughness index, CLA represents the average height, RMS represents the root mean square of the angle, R p represents the ratio of the actual length to the projected length, Rz Represents the amplitude of fluctuation, S p Represents the maximum peak height, S d Represents the maximum valley depth, SF represents the root mean square height, α ave (i.e., θ ave ) represents the average shear resistance angle, Z2 s Represents the root mean square of the first derivative of the surface, σ i Represents the standard deviation of the average angle, σ h Represents the standard deviation of the elevation, C′ represents the modified directional roughness fitting parameter, α max Represents the maximum angle along the shear direction, λ represents the limiting slope of the roughness profile, R Δa Represents the average slope.

[0111] It can be seen from the frequency of occurrence in the literature statistics that the most widely used topographic parameter is Z 2 , CLA, RMS, R p , R z , S p and θ ave (i.e., the representative topographic parameters), the calculation formulas for each parameter are as follows:

[0112]

[0113] Among them, y i , y i+1 respectively represent the y-direction coordinates of adjacent sampling points, Δx represents the sampling interval, and N represents the number of line segments of the structural plane profile.

[0114]

[0115] Among them, A 0 is the maximum possible contact area ratio, θ * is the apparent dip angle, θ * max is the maximum effective surface dip angle along the shear direction, is the contact area ratio, and C is the fitting parameter.

[0116]

[0117]

[0118] Among them, L represents the projected length.

[0119] R z = y max - y min (6)

[0120] S p = |ymax | (7)

[0121]

[0122] Among them, y max and y min are the maximum and minimum values of the y coordinate respectively, and x i and x i+1 represent the x-direction coordinates of adjacent sampling points respectively.

[0123] Based on the above indoor direct shear test, according to the results of the indoor direct shear test, the topographic parameters of each standard contour line are calculated respectively, and the topographic parameter values of each standard contour line are obtained.

[0124] According to the topographic information of 10 standard contour lines, the correlation coefficients between the statistical parameters are shown in Table 2 as follows:

[0125] Table 2 Correlation coefficients between parameters

[0126]

[0127] It can be seen that the angular parameters are strongly correlated with each other, and the correlation coefficients are generally higher than 0.9. The height parameters are strongly correlated with each other, and the correlation coefficients are generally higher than 0.9. The correlation between the angular parameters and the height parameters is weak, and the correlation coefficients are generally lower than 0.6. The following conclusions can be drawn: the inclination angle of asperities and the height of asperities are both key factors affecting the roughness of the structural plane, and the influence of the inclination angle and height on roughness is relatively independent; there is significant overlapping information between the statistical parameters, and using multiple parameters to jointly characterize the roughness of the structural plane will repeatedly consider some topographic information and reduce the effectiveness of topographic data.

[0128] In addition, by plotting the stress-strain curve of the standard structural plane and analyzing the results of the indoor direct shear test, including:

[0129] (1) When the structural plane is relatively smooth (such as C1), the shear test curve shows the characteristics of shear-slip failure. In the initial stage (shear displacement is about 0 - 2 mm), as the shear displacement gradually increases, the shear stress shows a rapid linear increase; after experiencing a certain critical shear displacement, the growth rate of the shear stress gradually slows down until the peak shear stress is reached; subsequently, as the shear displacement continues to increase, the shear stress does not change significantly until the end of the test.

[0130] (2) When the structural plane is relatively rough (such as C8), the shear test curve shows the characteristics of shear fracture failure. In the initial stage (shear displacement is about 0 - 2 mm), as the shear displacement gradually increases, the shear stress shows a rapid linear growth; after experiencing a certain critical shear displacement, the growth rate of the shear stress gradually slows down until the peak shear stress is reached; subsequently, as the shear displacement continues to increase, the shear stress rapidly drops to the residual strength, and an obvious peak shear stress appears; finally, as the shear displacement continues to increase, the shear stress no longer changes significantly until the end of the test.

[0131] (3) As the normal stress gradually increases, the peak shear strength and the residual shear strength increase significantly; as the roughness gradually increases, the peak shear strength and the residual shear strength show an increasing trend.

[0132] Figure 9 The damage conditions of specimens C1 - C10 under a normal stress of 3 MPa are shown, and it can be seen that:

[0133] (1) As the roughness gradually increases, the damage area of the structural plane shows a fluctuating characteristic. The damage areas of C2, C4, and C10 are at a relatively high level, and the damage areas of C6 and C8 are significantly lower than those of other specimens. Although the 10 standard contour lines have a clear roughness ranking, there are significant differences in the actual contact areas during the shear process. C2 and C4 are relatively flat as a whole, there are no obvious protrusions on the structural plane, and the area of the actual contact part is relatively large. C10 has large - inclination protrusions, which are directly sheared off during the shear process. Due to the ductility of the shearing effect, a certain range around the protrusions all becomes the damage area. C6 and C8 both contain small - inclination and large - height protrusions, and damage occurs only in a small part of the area on the shear - facing side of the protrusions.

[0134] (2) As the roughness gradually increases, the shear damage degree of the structural plane increases significantly. Deep plough - like scratches appear on the surfaces of specimens C5 - C10, and even some local areas are sheared off. Therefore, when considering the damage situation of the structural plane, not only the damage range but also the damage degree is of great significance.

[0135] Taking specimen C10 as an example, analyze the shear failure process of the rough structural plane. Figure 10 The shear process, damage condition, and shear curve of specimen C10 under a normal stress of 3 MPa are shown, and it can be seen that:

[0136] (1) As the shear displacement gradually increases, the structural plane on the shear - facing side gradually slips, abrades, and is nibbled off, and the structural plane on the back - shear side gradually separates, showing a dilatancy characteristic. The front view of the specimen shows two relatively obvious protrusions, both of which are sheared off during the shear process, and a tensile crack penetrates deep into the specimen.

[0137] (2) C10 mainly fails in tensile fracture, supplemented by shear slip failure. The surface of the specimen after shear contains a large area of fracture regions and local shear slip marks. Due to the large-area shear failure of the specimen, the shear stress drops rapidly after reaching the peak value and then gradually decreases to the residual strength.

[0138] Taking specimen C1 as an example, analyze the shear failure process of the smooth structural plane. Figure 11 For the shear process, damage condition and shear curve of specimen C1 under a normal stress of 1 MPa, it can be seen that:

[0139] (1) As the shear displacement gradually increases, the upper structural plane does not show obvious uplift. The upper and lower structural planes always tightly bite together. No obvious protrusions are seen in the front view of the specimen, nor are there any signs of microcrack development.

[0140] (2) Only local areas on the surface of the specimen after shear show friction marks, and no plough-shaped deep damage is seen. The damaged area feels relatively smooth. As the shear displacement gradually increases, the shear stress rapidly increases to the peak strength, and then the shear stress does not change significantly and always remains at a relatively low shear stress level, showing typical friction slip characteristics.

[0141] Taking specimen C10 as an example, analyze the influence law of normal stress on the shear mechanical properties of the structural plane. Figure 12 The damage images of specimen C10 under different normal stresses, the shear test curves, and the shear stress peak-normal stress relationship curves of all specimens are shown. It can be seen that:

[0142] (1) As the normal stress gradually increases, the damage range after shear gradually increases, and the main damage areas are concentrated at 3 relatively obvious protrusions. As the normal stress gradually increases, the range of plough-shaped deep damage further expands and is even directly sheared off. From (a) to (c) of Figure 12 , it can be seen that the leftmost protrusion (the largest protrusion) bears the main shear force.

[0143] (2) Under different normal stresses, the change laws of the stress-strain curves are basically the same. As the normal stress gradually increases, the peak shear strength and the residual shear strength show a linear growth trend.

[0144] Based on the analysis of the above morphological parameters and the results of the indoor direct shear test, it can be seen that representative morphological parameters or peak strength can be used as evaluation indicators, and the TOPSIS method can be used to study the roughness of the standard contour line.

[0145] The TOPSIS method, i.e., the "top-to-ideal solution ranking method", calculates the relative closeness of each sample to the ideal solution and ranks them according to the closeness of the evaluation object to the ideal solution. In this embodiment, the TOPSIS method is used to study the roughness of the standard contour line based on the morphological parameters of the standard contour line and the shear strength (including residual strength) of the standard structural surface.

[0146] Furthermore, although the classic TOPSIS method can obtain the optimal indicator among the same indicators and provide decision-making based on the optimal distance value, the method defaults to the same weight for each indicator, which may cause non-optimal selection. In view of this, in this embodiment, the entropy weight method is introduced to add weights on the basis of the TOPSIS method to increase scientificity and accuracy.

[0147] Here, the entropy weight method is an objective weighting method, which belongs to a method of determining weights from the data itself, which can avoid interference from human factors and make the weight distribution more objective. The degree of variation or uncertainty of the data makes the amount of information carried by the indicators different. Information entropy measures the degree of variation and discreteness of the data, and its essence is the expected value of the amount of information. The smaller the degree of variation of the indicator, the less information it reflects, and the corresponding weight should be lower, and vice versa.

[0148] Specifically, the TOPSIS method studies the roughness of the standard contour line, including:

[0149] Step 1: Standardize indicators

[0150] The indicators of the TOPSIS method include: extremely large indicators (benefit indicators), extremely small indicators (cost indicators), intermediate indicators and interval indicators. Based on the results of morphological parameter analysis and indoor direct shear test, peak strength and residual strength are positively correlated with roughness. Therefore, morphological parameters, peak strength and residual strength are all extremely large indicators, among which peak strength and residual strength are collectively referred to as shear strength. These indicators do not need to be processed in the same direction, but only need to be standardized.

[0151] The standardization process is as follows: Assuming there are n (i = 1, 2, ... n) evaluation objects and m (j = 1, 2, ... m) evaluation indicators, the forward matrix is ​​as follows:

[0152]

[0153] The index after normalization is z ij , the calculation method is as follows:

[0154]

[0155] On this basis, the positive matrix X is transformed into the standardized matrix Z:

[0156]

[0157] Step 2: Calculate the probability matrix p, determine the information entropy and the information entropy redundancy. The relevant formulas are as follows:

[0158]

[0159] d j = 1 - e j (13)

[0160]

[0161] In the formula, p ij is the proportion of each standardized element, e j is the information entropy, d j is the information entropy redundancy. By normalizing the information entropy redundancy, the entropy weight w j of each index can be obtained.

[0162] Step 3: Calculate the ideal solution

[0163] Define the positive ideal solution as Z + , and the negative ideal solution as Z - . The calculation formulas are as follows:

[0164] Z + = (max(z 11 , z 21 ,..., z n1 ), max(z 12 , z 22 ,..., z n2 ),... max(z 1m , z 2m ,..., z nm ))(15)

[0165] Z - = (min(z 11 , z 21 ,..., z n1 ), min(z 12 , z 22 ,..., z n2 ),... min(z 1m , z 2m ,..., z nm ))(16)

[0166] Then, calculate the length D of the i-th evaluation object from the positive ideal solution according to the following formula i+ and the length D of the i-th evaluation object from the negative ideal solution i - :

[0167]

[0168] Finally, calculate the unnormalized score S using the following formula j and the normalized score

[0169]

[0170] From the final normalized score it can be seen that the ranking of the advantages and disadvantages of each scheme, that is, the ranking of the roughness of the 10 contour lines in this embodiment.

[0171] Step 4: Sorting result.

[0172] Based on the foregoing research results, there are a total of 8 most representative topography parameters (i.e., representative topography parameters), which are: Z 2 , CLA, RMS, R p , R z , S p , and θ ave , calculate the representative topography parameters of the 10 standard contour lines using the results of the indoor direct shear test, and then execute the above steps 1 to 3 to calculate the scores of each standard contour line for sorting to obtain the roughness arrangement order of each standard contour line, and the results are as follows:

[0173] Table 3 Entropy weight-TOPSIS scores and scheme rankings based on topography parameters

[0174]

[0175] It can be seen from the table that the roughness of the standard contour lines is in turn: C1, C2, C3, C4, C5, C7, C6, C9, C10, and C8. The roughness of C1-C5 is the same as the sorting of the standard contour lines measured in the Barton literature, while the roughness of C6-C10 is significantly different from the sorting of the standard contour lines measured in the Barton literature.

[0176] Taking the peak strength as the evaluation index, according to the peak strength of the standard structural plane, calculate the scores of the 10 standard contour lines using the entropy weight-TOPSIS method for sorting to obtain the roughness sorting result of the standard contour lines, as follows:

[0177] Table 4 Entropy weight-TOPSIS scores and scheme rankings based on peak strength

[0178]

[0179] As can be seen from the table, taking the peak intensity as the evaluation index, the roughness of the standard contour lines is in the order of: C1, C2, C3, C4, C5, C6, C9, C7, C8, and C10. The roughness of C1 - C6 is the same as the sorting of the standard contour lines measured in the Barton literature, while the roughness of C7 - C10 is significantly different from the sorting of the standard contour lines measured in the Barton literature.

[0180] Figure 13 It is a schematic diagram of the roughness sorting results of the morphology parameters and the peak intensity. As Figure 13 shown, whether taking the representative morphology parameters or the shear strength as the evaluation index, the sorting results are significantly different from the sorting of the standard contour lines measured in the Barton literature. The reason is that in the Barton literature, there are certain subjective factors in the test process of the JRC value of the standard contour line, resulting in certain unreasonableness in the measured JRC value of the standard contour line.

[0181] In this embodiment, under the condition that the 10 standard contour lines proposed by Barton are widely recognized in the engineering community and the academic community, the inventor dares to break through the routine and carry out experimental research, using indoor experiments to check the true roughness of the standard contour line. On the basis of finding that there are differences between the true roughness of the standard contour line measured in the indoor experiment and the roughness of the standard contour line measured in the Barton literature, a method for correcting the roughness of the standard contour line is proposed. From the execution steps of this method, it can be seen that in this embodiment, the rough characteristics of the standard structural surface specimen completely depend on the standard contour line, without the interference of human subjective factors. Therefore, it is reasonable to equate the JRC value of the standard contour line to the JRC value of the standard structural surface specimen (i.e., the corrected JRC value), which is the internal reason for the difference between the experimental research carried out in this embodiment and the JRC values of the standard contour lines measured in the Barton literature respectively. In addition, by averaging the JRC values of multiple standard structural surfaces and taking the mean value as the JRC value of the standard structural surface specimen, the accuracy of the corrected JRC value is further improved.

[0182] In summary, in this embodiment, through the analysis of topographic parameters and direct shear tests, the rough characteristics of the standard contour line are studied, and the true roughness JRC value of the standard contour line (i.e., the corrected JRC value of the standard contour line) is obtained. 1) Taking representative topographic parameters or shear strength as evaluation indexes, the entropy weight-TOPSIS method is used to determine the roughness order of the standard contour line. The advantages of the entropy weight-TOPSIS method are mainly reflected in its objectivity, flexibility and efficiency. It eliminates the influence of subjective factors through the entropy weight method, accurately calculates the index weights, and combines the TOPSIS method to comprehensively evaluate and rank the schemes. This method has strong advantages in dealing with multi-index and complex decision-making problems and is widely used in fields such as management decision-making, engineering selection, and risk assessment. The representative topographic parameters fully consider the physical meaning of each topographic parameter, the appearance frequency in the literature, and the correlation with the joint roughness coefficient, and can comprehensively reflect the topographic characteristics of the joint surface. Therefore, it is suitable to be used as an evaluation index for the entropy weight-TOPSIS method. 2) The true roughness JRC of each standard contour line is determined by using the direct shear test of numerically controlled engraving specimens. The 10 standard contour lines are extended into three-dimensional joint surfaces, and numerically controlled engraving technology is used to produce joint specimens (i.e., standard joint specimens). The direct shear test is carried out under 3 levels of normal stress, and the JRC values of each specimen are back-calculated according to the JRC-JCS model. Therefore, the rough characteristics of the joint specimens completely depend on the standard contour line, and the JRC value of the standard contour line is the JRC value of the numerically controlled engraving specimens, which improves the rationality of the roughness calculation of the standard contour line.

[0183] Based on the same inventive concept, this embodiment provides a system for correcting the roughness of a standard contour line, including:

[0184] A digitalization unit configured to digitally process each standard contour line and establish a two-dimensional contour line model based on the results of the digital processing;

[0185] A three-dimensional modeling unit configured to stretch the two-dimensional contour line model longitudinally in three-dimensional modeling software to obtain a three-dimensional joint surface model of each standard contour line;

[0186] A specimen production and test unit configured to produce a standard joint specimen by using numerically controlled engraving technology based on the three-dimensional joint surface model and conduct an indoor direct shear test on the standard joint specimen;

[0187] A true value calculation unit configured to back-calculate the roughness JRC value of each standard joint specimen based on the results of the indoor direct shear test to determine the corrected JRC value of each standard contour line.

[0188] The system for correcting the roughness of the standard profile line provided in this embodiment can implement the method flow and steps for correcting the roughness of the standard profile line provided in any of the above embodiments, and achieve the same technical effects, which will not be elaborated one by one here.

[0189] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A method for correcting the roughness of a standard contour line, characterized in that: include: Digitally process each standard contour line, and establish a two-dimensional contour line model based on the result of the digital processing; In the three-dimensional modeling software, the two-dimensional contour line model is stretched longitudinally to obtain a three-dimensional structural surface model of each standard contour line; Based on the three-dimensional structural surface model, a standard structural surface specimen is manufactured by adopting numerical control engraving technology, and an indoor direct shear test is carried out on the standard structural surface specimen; Based on the results of the indoor direct shear test, the roughness JRC value of each standard structural surface specimen is back-calculated to determine the corrected JRC value of each standard contour line.

2. The method according to claim 1, characterized in that A two-dimensional contour line model is established based on the results of digital processing, specifically: The coordinate data of each standard contour line obtained by digitization are imported into the two-dimensional modeling software, and rectangular frames are added at both ends of the contour line to establish a two-dimensional contour line model.

3. The method according to claim 1, characterized in that Based on the three-dimensional structural surface model, a standard structural surface specimen is produced using CNC engraving technology, specifically: The tool path is programmed according to the three-dimensional structural surface model, and the standard structural surface specimen is manufactured by adopting numerical control engraving technology.

4. The method according to claim 1, characterized in that: Based on the results of the indoor direct shear test, the roughness JRC value of each standard structural surface sample is back-calculated to determine the true JRC value of each standard contour line, specifically: Based on the results of the indoor direct shear test, the roughness JRC value of each standard structural surface sample is back-calculated, and the roughness JRC value of each standard structural surface sample is used as the corrected JRC value of the corresponding standard contour line.

5. The method according to claim 1, characterized in that For each of the standard contour lines, multiple groups of standard structural surface samples are prepared; Accordingly, the roughness JRC value of each standard structural surface specimen is back-calculated based on the results of the indoor direct shear test to determine the true JRC value of each standard contour line, specifically: The roughness JRC value of each standard structural surface sample is back-calculated based on the results of the indoor direct shear test, and the average value of the roughness JRC values ​​of multiple standard structural surface samples corresponding to each standard contour line is calculated as the corrected JRC value of the standard contour line.

6. The method according to claim 1, characterized in that The method further comprises: Based on the results of morphological parameter analysis and indoor direct shear test, the entropy weight-TOPSIS method was used to determine the roughness ranking order of each standard contour line, taking representative morphological parameters or shear strength as evaluation indicators; The roughness arrangement order of each standard contour line is compared with the original roughness arrangement order of each standard contour line to verify the accuracy and objectivity of the original roughness of the standard contour line.

7. A system for correcting the roughness of a standard contour line, characterized in that: include: A digitizing unit configured to digitize each standard contour line and establish a two-dimensional contour line model based on the result of the digitizing process; A three-dimensional modeling unit is configured to stretch the two-dimensional contour line model in the longitudinal direction in the three-dimensional modeling software to obtain a three-dimensional structural surface model of each standard contour line; A sample preparation and testing unit is configured to prepare a standard structural surface sample based on the three-dimensional structural surface model by using a numerical control engraving technology, and to carry out an indoor direct shear test on the standard structural surface sample; The true value calculation unit is configured to back-calculate the roughness JRC value of each standard structural surface sample based on the result of the indoor direct shear test to determine the corrected JRC value of each standard contour line.

8. An electronic device, characterized in that: include: a memory for storing instructions executed by one or more processors of the electronic device; The processor, when the processor executes the instructions in the memory, can enable the electronic device to implement the steps of any one of the methods according to claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, which implement the steps of the method according to any one of claims 1 to 6 when executed on a computer.

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