A method for constructing a three-dimensional model of a geological structure of a mining area and a terminal device

Abstract

The application is suitable for the technical field of mine exploitation, and provides a three-dimensional model construction method of mine area geological structure and a terminal device, comprising: constructing a fault data file according to a fault image; determining a karst cave stratum data file and an original stratum data file according to drilling exploration data; and generating a three-dimensional model of geological structure according to the fault data file, the karst cave stratum data file and the original stratum data file, so that the visualization model of the karst cave is established with feasibility and rationality, and the depiction and description of the mine area fault are added, the combination and mutual influence relationship among the karst cave, the fault and the stratum are intuitively and accurately presented in the three-dimensional model, the distribution situation and development trend of the karst area passage of the mine area are known by the exploitation personnel, and the karst area passage can be avoided or corresponding measures can be taken to ensure the safety of the karst area passage before exploitation.

Description

Technical Field

[0001] This application belongs to the field of mining technology, and in particular relates to a method and terminal equipment for constructing a three-dimensional model of the geological structure of a mining area. Background Technology

[0002] Karst mining areas, due to the combined dissolution effects of surface water and groundwater, form various forms of karst. The existence of karst channels significantly reduces the rock's resistance to seepage damage, leading to disasters such as water inrush, mudslides, ground subsidence, and river backflow during mine development. Therefore, understanding the geological structure of the mining area is crucial before commencing mining operations. However, current analyses of mine geological structures mostly remain at the level of two-dimensional models, failing to accurately represent the geological structure of the mining area and effectively guide mine development work. Summary of the Invention

[0003] This application provides a method and terminal device for constructing a three-dimensional model of the geological structure of a mining area, which can accurately display the geological structure of the mining area and facilitate guidance for mine development work.

[0004] In a first aspect, embodiments of this application provide a method for constructing a three-dimensional model of the geological structure of a mining area, including:

[0005] Construct a tomographic data file from the tomographic images;

[0006] Determine the karst cave strata data file and the original strata data file based on borehole exploration data;

[0007] A three-dimensional model of the geological structure is generated based on the fault data file, the karst strata data file, and the original strata data file.

[0008] In one possible implementation of the first aspect, constructing a tomographic data file from the tomographic image includes:

[0009] Extract the coordinates of fault points from the tomographic images;

[0010] According to the overall dip angle of the fault, the coordinates of the fault points are interpolated in the vertical direction to form fault data files one by one.

[0011] In one possible implementation of the first aspect, determining the karst formation data file and the original formation data file based on borehole exploration data includes:

[0012] The elevations of the surface, the Hutian Group, and the Quaternary strata were determined based on borehole exploration data.

[0013] The original stratigraphic data file is generated based on the elevations of the surface, the Hutian Group, and the Quaternary base plate.

[0014] Based on borehole statistics, the distribution of karst caves is stratified, and based on the karst cave strata, a karst cave stratigraphic data file is determined.

[0015] In one possible implementation of the first aspect, the stratification of the distribution of karst caves based on borehole statistics includes:

[0016] Obtain the two largest karst caves at the same elevation detected under each borehole, and set them as karst cave layers;

[0017] The caves in the remaining elevation are designated as a cave layer.

[0018] In one possible implementation of the first aspect, the method for constructing a three-dimensional model of the geological structure of the mining area further includes:

[0019] If the number of caves detected by the borehole is less than a preset threshold, and the height of the cave is less than a preset height, the exploration data of that borehole will be deleted.

[0020] In one possible implementation of the first aspect, the method for constructing a three-dimensional model of the geological structure of the mining area also includes;

[0021] If the borehole detects only one cave with a height greater than or equal to the preset height, the cave is designated as a cave layer.

[0022] In one possible implementation of the first aspect, after generating the maintenance strategy based on the fault detection results, it further includes:

[0023] The data file for determining the karst strata based on karst cave layering includes:

[0024] Obtain the top and bottom elevations of each cave layer;

[0025] Interpolate the data within the top and bottom elevation ranges of each cave layer to obtain the cave stratum data file.

[0026] Secondly, embodiments of this application provide a terminal device, including:

[0027] The first data processing unit is used to construct a fault data file based on the fault image;

[0028] The second data processing unit is used to determine the karst formation data file and the original formation data file based on the borehole exploration data.

[0029] The construction unit is used to generate a three-dimensional model of the geological structure based on the fault data file, the karst strata data file, and the original strata data file.

[0030] Thirdly, embodiments of this application provide a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the three-dimensional model construction method for the geological structure of the mining area as described in any of the first aspects above.

[0031] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for constructing a three-dimensional model of a mining area geological structure as described in any one of the first aspects above.

[0032] Fifthly, embodiments of this application provide a computer program product that, when run on a server, enables the server to execute the method for constructing a three-dimensional model of the geological structure of a mining area as described in any of the first aspects above.

[0033] The beneficial effects of the embodiments in this application compared with the prior art are:

[0034] This application provides a method and terminal device for constructing a three-dimensional model of the geological structure of a mining area. By generalizing the distribution of karst caves into strata representing the karst cave area, the establishment of a visualization model of karst caves becomes feasible and reasonable. Furthermore, it incorporates the depiction and description of faults in the mining area. In the three-dimensional model, the combination and mutual influence between karst caves, faults, and strata are presented intuitively and accurately, making it easier for mining personnel to understand the distribution and development trend of karst channels in the mining area. Before mining, karst channels can be avoided or corresponding measures can be taken to ensure the safety of karst channels. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0036] Figure 1 This is a schematic diagram illustrating the implementation process of a three-dimensional model construction method for a mining area geological structure according to an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the distribution of fault conditions provided in one embodiment of this application;

[0038] Figure 3 This is a schematic diagram of a 3D boundary graphic provided in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of a three-dimensional model of the geological structure of a mining area provided in an embodiment of this application;

[0040] Figure 5 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0041] Figure 6 This is a schematic diagram of the structure of another terminal device provided in an embodiment of this application. Detailed Implementation

[0042] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0043] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0044] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0045] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0046] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0048] Analyzing the geological conditions of a mining area (with a focus on the distribution of karst channels) is of great significance for ensuring safe and efficient mining and reducing and preventing various geological disasters. The voids formed by the dissolution of soluble carbonate rocks can range from tiny pores to enormous caverns, interconnecting to form individual karst channels or lattice-like karst formations. The formation of karst channels primarily originates from the dissolution of carbonate rocks. Under the influence of the polar molecular charge and electrodynamic conditions of water, ions in the carbonate mineral lattice detach from their original positions and migrate into the water, thus forming cavities. Geological structure is the primary factor influencing karst development, controlling not only its direction but also, for example, the axial part of an anticlinal is where tensile stress is generated, resulting in well-developed tension joints. Rainwater or surface water moves vertically along these joints and fissures, and then moves towards the flanks along the geological structural lines, thus leading to karst development. Furthermore, karst development exhibits a zonal distribution characteristic consistent with the structural axis. The flanks of folds are located at the runoff points of the karst water movement system, with high flow velocities and active hydrodynamics, resulting in intense karstification. In these areas, there are both horizontal karst caves and vertical karst caves connected to the surface. Although karstification is relatively weak in compressive fault zones, strong karst development can still occur in the hanging wall (or footwall) of these zones.

[0049] This application provides a method for generating a three-dimensional model of the geological structure of a mining area. The three-dimensional model can intuitively and accurately display the geological structure of the mining area, making it easier for mining personnel to understand the distribution and development trend of karst channels in the mining area. Before mining, they can avoid karst channels or take corresponding measures to ensure the safety of karst channels.

[0050] The following describes the method for generating a three-dimensional model of a mine geological structure provided in the embodiments of this application, with reference to the accompanying drawings:

[0051] Please see Figure 1 , Figure 1 This is a flowchart illustrating a method for generating a three-dimensional model of a mine geological structure, as provided in an embodiment of this application. Figure 1As shown, the method for generating a three-dimensional model of the above-mentioned mine geological structure may include S101 to S103, which are detailed below:

[0052] S101: Construct a fault data file based on the fault images.

[0053] In this embodiment of the application, the above-mentioned fault image is an image obtained during the early exploration of the mining area.

[0054] Based on the orientation and kinematic characteristics of the fault structure, faults can be mainly divided into four groups: NNE-near N-S, NE, NW, and near EST.

[0055] For example Figure 2 The F202 and F203 faults in the area strike 310–340° with a gentle dip at the top and a steep dip at the bottom. The fault displacement is greater than 400 m, and the widest fault breccia zone is greater than 10 m, while the narrowest is less than 0.05 m. It is mainly composed of limestone, dolomitic limestone breccia, or peatstone ripped from the hanging wall and footwall. While the fault itself does not contain minerals, it controls the occurrence of secondary capacitively controlled ore-bearing faults. Currently, 98% of the proven ore bodies in Fankou are located on the hanging wall of the F203 fault.

[0056] The north-northeast trending faults F4, F5, and F6 are nearly parallel and equidistant from each other in the plane, with a length of 2000–2500 m. They extend northward into the Cambrian Bacun Group's slightly metamorphosed clastic rocks and southward to the area south of Dongtang Town. They strike north-northeast 10–20°, dip eastward at angles of 60–85°, with local reverse dips. Overall, they are tightly closed and compressional-shear faults, with some sections exhibiting extensional breccia zones of 2–10 m. The breccia varies in size and composition, including dolomite, dolomitic limestone, limestone breccia, and a small amount of ore breccia. The fault surfaces are straight or gently wavy, with horizontal displacements of 100–200 m and vertical displacements generally <100 m.

[0057] The fault data file includes fault data files for multiple fault planes, and a separate fault data file can be constructed for each fault. The aforementioned fault data file includes the coordinate data of the fault extraction points (X-axis and Y-axis coordinates) and the height coordinate data (Z-axis coordinates) determined based on the overall dip angle.

[0058] In one embodiment of this application, S101 includes:

[0059] Extract the coordinates of fault points from the tomographic images;

[0060] According to the overall dip angle of the fault, the coordinates of the fault points are interpolated in the vertical direction to form fault data files one by one.

[0061] In this embodiment of the application, when processing fault data, the plane point coordinates of the fault can be extracted one by one using the LIST command in AutoCAD software to obtain the fault point coordinates corresponding to the fault image. For example, the extracted fault point coordinates can be shown in Table 1:

[0062] Table 1:

[0063]

[0064]

[0065] By interpolating vertically according to the overall dip angle of the fault (70 degrees east of north for north-south faults and nearly 90 degrees for east-west faults) in EXCEL, the spatial point coordinate data is improved and expanded, resulting in the fault data file shown in Table 2.

[0066] Table 2:

[0067]

[0068]

[0069] S102: Determine the karst strata data file and the original strata data file based on the borehole exploration data.

[0070] In this embodiment of the application, during borehole exploration, the borehole depth can be set to 300 to 1000 m. Such exploration data can accurately cover the bottom elevation of the Quaternary and Hutian Group in the mining area, as well as the number and depth of karst caves under each borehole.

[0071] In one embodiment of this application, S102 may include the following steps:

[0072] The elevations of the surface, the Hutian Group, and the Quaternary strata were determined based on borehole exploration data.

[0073] The original stratigraphic data file is generated based on the elevations of the surface, the Hutian Group, and the Quaternary base plate.

[0074] Based on borehole statistics, the distribution of karst caves is stratified, and based on the karst cave strata, a karst cave stratigraphic data file is determined.

[0075] In practical applications, the elevations of the surface, Hutian Group, and Quaternary strata can be determined first based on borehole exploration data, and the elevations of the surface, Hutian Group, and Quaternary strata can be exported. The SURFER grid interpolation method can then be used to interpolate the data to obtain data files for the Quaternary and Hutian Group strata (i.e., the original stratigraphic data files).

[0076] Considering the unique characteristics of karst caves and the uncertainty of their connection methods, we can first perform a stratified generalization of the distribution and development of karst caves based on borehole exploration data (i.e., stratify the distribution of karst caves based on borehole statistical data), and generalize the areas with dense distribution of karst caves into independent strata so that they can be represented in the model.

[0077] Specifically, the above-mentioned stratification of karst cave distribution based on borehole exploration data may include the following steps:

[0078] Obtain the two largest karst caves at the same elevation detected under each borehole, and set them as karst cave layers;

[0079] The caves in the remaining elevation are designated as a cave layer.

[0080] For example, if borehole 1 detects large karst caves in the elevation range of 40–90 m and 0–40 m, since only the 40–90 m and 0–40 m ranges have large karst caves, the largest karst caves in each range are divided into one layer. If borehole 1 detects large karst caves below 0 m elevation, the large karst caves below 0 m can be divided into one layer, and the largest karst caves above 0 m elevation can be generalized into one layer.

[0081] Specifically, when dividing the cave layers, if the number of caves detected in a borehole is less than a preset threshold, and the cave height is less than a preset height, the exploration data for that borehole is deleted. If a borehole has only one relatively obvious cave (the cave height is greater than or equal to the preset height), that cave is simply classified as one cave layer. It should be noted that the preset threshold and preset height can be set according to actual conditions, and this application does not impose any restrictions on them.

[0082] When generalizing the karst caves at each point, the top and bottom elevations of the two karst strata were recorded. After obtaining the top and bottom point data of the two karst caves, the data file was expanded using the grid interpolation method of SURFER software to make the point distribution uniform and continuous, thus obtaining the karst cave strata data file. The specific interpolation method can be found in existing interpolation methods, and will not be elaborated here.

[0083] S103: Generate a three-dimensional model of the geological structure based on the fault data file, the karst strata data file, and the original strata data file.

[0084] In this embodiment of the application, the construction of the three-dimensional model of the above-mentioned geological structure can be realized based on geological three-dimensional modeling technology (software), specifically using SKUA-GOCAD software.

[0085] Specifically, in SKUA-GOCAD, import the aforementioned fault data files and the aforementioned original stratigraphic data files one by one using the IMPORT option, and introduce boundary conditions to obtain the initial graphics.

[0086] Enter the WORKFLOW module, select the Structure & Strategy module to generate a 3D geological model, create stratigraphic objects, and after selecting the created stratigraphic objects, you can edit and set the position and combination of these stratigraphic objects. For example, you can set the Quaternary strata to be at the top, and the Hutian Group strata below are divided into three parts by two karst cave layers. The stratigraphic order is as follows: Quaternary loose rock porous aquifer, Hutian Group carbonate rock I weakly permeable layer, Hutian Group carbonate rock karst cave I water-bearing channel, Hutian Group carbonate rock II weakly permeable layer, Hutian Group carbonate rock karst cave II water-bearing channel, and Hutian Group carbonate rock III weakly permeable layer above the -50m elevation.

[0087] After setting the strata, you can set the faults, setting them as undefined faults (i.e., not defined as parallel or reverse faults), and generate fault zones using FAULT NETWORK.

[0088] Using the mining area as the planar boundary, the top Z-value of the 3D model is set to 500 feet, and the bottom Z-value is set to -165 feet to generate a 3D boundary graphic. For example, the 3D boundary graphic can be as follows: Figure 3 As shown.

[0089] By superimposing the above-mentioned stratigraphic objects, fault zones, and 3D boundary graphics, a three-dimensional model of the geological structure of the mining area can be obtained.

[0090] For example, a three-dimensional model of the geological structure of the aforementioned mining area can be as follows: Figure 4 As shown. Moreover, this 3D model can display the geological structure of the mining area from multiple perspectives and cross-sections.

[0091] In practical applications, to intuitively observe the terrain elevation variation patterns of the model, you can select any stratum or a combination of several strata in the regions module to create a Z-axis gradient 3D model, with different colors corresponding to different elevations. Combined with the software's automatic display of spatial coordinates for any point, you can intuitively observe the undulations and variation patterns of each stratum, and determining the distribution range of that stratum becomes simple and clear.

[0092] As can be seen from the above, the three-dimensional model construction method for the geological structure of the mining area provided in this application generalizes the distribution of karst caves into strata representing the karst cave area, making the establishment of a visualization model of karst caves feasible and reasonable. In addition, the method incorporates the depiction and description of faults in the mining area. The combination and mutual influence between karst caves, faults, and strata are presented intuitively and accurately in the three-dimensional model, which helps mining personnel to understand the distribution and development trend of karst channels in the mining area. Before mining, karst channels can be avoided or corresponding measures can be taken to ensure the safety of karst channels.

[0093] Figure 5 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Figure 5 As shown, the aforementioned terminal equipment includes:

[0094] The first data processing unit 501 is used to construct a fault data file based on the fault image;

[0095] The second data processing unit 502 is used to determine the karst formation data file and the original formation data file based on the borehole exploration data;

[0096] The construction unit 503 is used to generate a three-dimensional model of the geological structure based on the fault data file, the karst strata data file, and the original strata data file.

[0097] In one embodiment of this application, the first data processing unit 501 may include a fault point extraction unit and a fault data generation unit.

[0098] The aforementioned fault point extraction unit is specifically used to extract the coordinates of fault points from the fault image;

[0099] The aforementioned fault data generation unit is specifically used to interpolate the coordinates of the fault points in the vertical direction according to the overall dip angle of the fault, thereby forming fault data files one by one.

[0100] In one embodiment of this application, the second data processing unit includes a raw stratigraphic data generation unit and a karst cave stratigraphic data generation unit.

[0101] The aforementioned raw data generation unit is specifically used to determine the elevation of the surface, Hutian Group, and Quaternary base plate based on borehole exploration data; and to generate raw stratigraphic data files based on the elevation of the surface, Hutian Group, and Quaternary base plate.

[0102] The aforementioned cave strata data generation unit is used to stratify the distribution of caves based on borehole statistics and to determine the cave strata data file based on the cave stratification.

[0103] In one embodiment of this application, the aforementioned karst formation data generation unit is specifically used to obtain the two largest karst caves detected at the same elevation in each borehole, and set them as karst cave layers respectively; set the karst caves in the remaining elevations as a karst cave layer; if the number of karst caves detected by the borehole is less than a preset threshold and the cave height is less than a preset height, delete the exploration data of that borehole; if the borehole only detects one karst cave with a height greater than or equal to a preset height, set the cave as a karst cave layer.

[0104] In one embodiment of this application, the aforementioned cave strata data generation unit is further used to obtain the top elevation and bottom elevation of each cave layer;

[0105] Interpolate the data within the top and bottom elevation ranges of each cave layer to obtain the cave strata data file.

[0106] As can be seen from the above, the terminal device provided in this application embodiment can also generalize the distribution of karst caves into strata representing the karst cave area, making the establishment of a visualization model of karst caves feasible and reasonable. In addition, it incorporates the depiction and description of faults in the mining area. In the three-dimensional model, the combination and mutual influence relationship between karst caves, faults, and strata are presented intuitively and accurately, which makes it easier for mining personnel to understand the distribution and development trend of karst area channels in the mining area. Before mining, they can avoid karst area channels or take corresponding measures to ensure the safety of karst area channels.

[0107] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0108] Figure 6 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Figure 6 As shown, the terminal device 6 in this embodiment includes: at least one processor 60 ( Figure 6 (Only one is shown) a processor, a memory 61, and a computer program 62 stored in the memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, it implements the steps in any of the above embodiments of the method for constructing a three-dimensional model of a mining area geological structure.

[0109] Those skilled in the art will understand that Figure 6 This is merely an example of terminal device 6 and does not constitute a limitation on terminal device 6. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0110] The processor 60 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0111] In some embodiments, the memory 61 may be an internal storage unit of the terminal device 6, such as a hard disk or memory of the terminal device 6. In other embodiments, the memory 61 may be an external storage device of the terminal device 6, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the terminal device 6. Furthermore, the memory 61 may include both internal and external storage units of the terminal device 6. The memory 61 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0112] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps in any of the above embodiments of the method for constructing a three-dimensional model of a mining area geological structure.

[0113] This application provides a computer program product that, when run on a terminal device, enables the terminal device to implement the steps in any of the above-described embodiments of the three-dimensional model construction method for geological structures in mining areas.

[0114] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0115] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0116] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0117] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0118] In the embodiments provided in this application, it should be understood that the disclosed method for constructing a three-dimensional model of the geological structure of the mining area can be implemented in other ways. For example, the device / server embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0119] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0120] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for constructing a three-dimensional model of the geological structure of a mining area, characterized in that, include: Fault data files are constructed based on fault images, which are images obtained during the early exploration of the mining area. According to the fault structure orientation and kinematic characteristics, the faults are divided into four groups: NNE-near N-S, NNE, and near E-W. Determine the karst cave strata data file and the original strata data file based on borehole exploration data; A three-dimensional model of the geological structure is generated based on the fault data file, the karst strata data file, and the original strata data file; The process of determining the karst formation data file and the original formation data file based on borehole exploration data includes: The elevations of the surface, the Hutian Group, and the Quaternary strata were determined based on borehole exploration data. The original stratigraphic data file is generated based on the elevation of the surface, the Hutian Group and the Quaternary base plate. Considering the special nature of the karst caves and the uncertainty of their connection methods, the distribution and development of the karst caves are first generalized by stratification based on the borehole exploration data. That is, the distribution of karst caves is stratified based on the borehole statistical data, and the areas with dense distribution of karst caves are generalized into independent strata so that they can be presented in the model. Based on borehole statistics, the distribution of karst caves is stratified, and based on the karst cave strata, a karst cave stratigraphic data file is determined; The method for determining the karst strata data file based on karst cave stratification includes: when generalizing the karst cave at each point, obtaining the top and bottom elevations of each karst cave stratum; and interpolating the data within the range of the top and bottom elevations of each karst cave stratum to obtain the karst strata data file. The step of constructing a fault data file based on a fault image includes: extracting fault point coordinates from the fault image; and interpolating the fault point coordinates vertically according to the overall dip angle of the fault to form a fault data file. The method of stratifying the distribution of karst caves based on borehole statistics includes: obtaining the two largest karst caves detected at the same elevation under each borehole and setting them as karst cave layers; setting the karst caves at the remaining elevations as a karst cave layer. The three-dimensional model construction method further includes: if the number of caves detected by the borehole is less than a preset threshold and the height of the cave is less than a preset height, the exploration data of the borehole is deleted; if the borehole only detects one cave with a height greater than or equal to a preset height, the cave is set as a cave layer.

2. A terminal device, characterized in that, include: The first data processing unit is used to construct fault data files based on fault images. The fault images are images obtained during the early exploration of the mining area. According to the fault structure orientation and kinematic characteristics, the faults are divided into four groups: NNE-near N-S, NNE, and near E-W. The second data processing unit is used to determine the karst formation data file and the original formation data file based on the borehole exploration data. A construction unit is used to generate a three-dimensional model of the geological structure based on the fault data file, the karst strata data file, and the original strata data file; The second data processing unit includes a raw stratigraphic data generation unit and a karst cave stratigraphic data generation unit. The raw stratigraphic data generation unit is specifically used to determine the elevation of the surface, the Hutian Group, and the Quaternary strata based on borehole exploration data; and to generate raw stratigraphic data files based on the elevation of the surface, the Hutian Group, and the Quaternary strata. Considering the special characteristics of karst caves and the uncertainty of their connection methods, the distribution and development of karst caves are first generalized into layers based on the borehole exploration data, that is, the distribution of karst caves is layered based on borehole statistical data, and the areas with dense distribution of karst caves are generalized into independent strata, so that they can be presented in the model. The cave strata data generation unit is used to stratify the distribution of caves based on borehole statistics and to determine the cave strata data file based on the cave stratification. The method for determining the karst strata data file based on karst cave stratification includes: when generalizing the karst cave at each point, obtaining the top and bottom elevations of each karst cave stratum; and interpolating the data within the range of the top and bottom elevations of each karst cave stratum to obtain the karst strata data file. The step of constructing a fault data file based on a fault image includes: extracting fault point coordinates from the fault image; and interpolating the fault point coordinates vertically according to the overall dip angle of the fault to form a fault data file. The method of stratifying the distribution of karst caves based on borehole statistics includes: obtaining the two largest karst caves detected at the same elevation under each borehole and setting them as karst cave layers; setting the karst caves at the remaining elevations as a karst cave layer. The terminal device is further configured to: delete the exploration data of the borehole if the number of caves detected by the borehole is less than a preset threshold and the height of the cave is less than a preset height; and set the cave as a cave layer if the borehole detects only one cave with a height greater than or equal to a preset height.

3. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the three-dimensional model construction method for the geological structure of the mining area as described in claim 1.

4. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the three-dimensional model construction method for the geological structure of the mining area as described in claim 1.

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