A method for integrating mining area geological model with three-dimensional basic geological model

Abstract

A method for fusing a mining area geological model with a three-dimensional basic geological model includes: obtaining the mining area geological model to be fused, performing model format conversion and projection conversion on the mining area geological model, and converting the raster model in the mining area geological model into a vector model; determining the quality and accuracy of the converted mining area geological model; determining whether seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the project fusion purpose; delineating a buffer zone for model fusion based on the differences between the models to be fused, and determining whether the buffer zone meets the requirements; processing the data source within the buffer zone and reconstructing the model; and completing the model fusion at the geometric topology level. The present invention solves the problem of the difficulty in fusing mining area geological models with three-dimensional basic geological models in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of model fusion, and in particular to a method for fusing a mining area geological model with a three-dimensional basic geological model. Background Art

[0002] Three-dimensional geological model fusion can include various types of model fusion, such as above-ground and underground model fusion, engineering geology and hydrogeology model fusion, vector structure model and raster attribute model fusion, large-scale geological model and small-scale geological model fusion, etc.

[0003] The fundamental purpose of structural model fusion is to merge the effective geological information of multiple geological models into one model to facilitate model display, analysis and application; it solves the inconvenience of display, analysis and application of multiple models in the same area, giving rise to the demand for model fusion; the use of 3D modeling, model display and analysis to merge the information of multiple models into the same model is the fundamental purpose of model fusion. In addition, the fused model should completely replace the model before fusion in the display and analysis application scenario, without losing the effective information of the original model.

[0004] In the existing technology, the fusion of mining area geological model and 3D basic geological model is to fuse the large-scale small-scale mining area geological model into the small-scale large-scale 3D model. Since the geological structural elements unique to the large-scale model, such as small faults, small strata, and small folds within the mining area modeling range, should not be extended to the 3D model, there is an urgent need for a method to fuse the mining area geological model with the 3D basic geological model. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a method for fusing a mining area geological model with a three-dimensional basic geological model to overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0007] A method for fusing a mining area geological model with a three-dimensional basic geological model, comprising:

[0008] S100. Obtaining a geological model of the mining area to be fused, performing model format conversion and projection conversion on the geological model of the mining area, and converting the raster model in the geological model of the mining area into a vector model;

[0009] S200. Determine the quality and accuracy of the converted mining area geological model;

[0010] S300. Determine whether the seamless connection between the mining area geological model and the basic geological model meets the project integration purpose;

[0011] S400. According to the differences in the models to be fused, a buffer zone for model fusion is defined, and it is determined whether the buffer zone meets the requirements;

[0012] S500. Processing the data source in the buffer and rebuilding the model;

[0013] S600. Complete geometric topology level model fusion.

[0014] Furthermore, in S100, multiple external model format data are converted into MapGIS format through MapGIS, including obj, 3ds, dae, osgb, osg, stl, xml and x formats.

[0015] Furthermore, in S100, projection conversion is performed through the batch projection module in MapGIS, specifically including: setting the source data name, source path, source reference system, destination reference system and destination database; converting the raster model in the mining area geological model into a vector model through the raster to vector module; specifically including: input and output settings, including grid model path and save path; grid parameters, including grid origin, grid step size and grid number in X, Y and Z direction parameters; attribute settings, including tracking type and attribute field.

[0016] Furthermore, in S200, the quality and accuracy of the converted mining area geological model are judged, including: whether the model topology is correct, whether the model can be cut arbitrarily, whether the model results are complete, whether the model data volume is reasonable, whether the model attributes are standardized, whether the spatial reference system of the model is complete, whether the model accuracy is qualified, and whether the model conforms to geological laws.

[0017] Furthermore, in S300, it is determined whether the seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the purpose of project fusion, specifically including: determining whether the purpose of structural model fusion is to merge the effective geological information of multiple geological models into one model; determining whether the purpose of structural model fusion is to solve the problem of inconsistent geological information of the fused models; determining whether the purpose of structural model fusion is to solve the inconsistency problem of the original model while retaining the effective information of the original model; determining whether the purpose of structural model fusion is to reduce the model quality at the geometric topology level.

[0018] Furthermore, in S400 , the size of the buffer zone is manually determined based on the difference between the mining area geological model and the three-dimensional basic geology; specifically, the greater the geological difference between the two models to be fused, the larger the buffer zone.

[0019] Furthermore, in S400, it is determined whether the buffer zone meets the requirements, specifically including: determining whether the buffer zone is too large. The buffer zone range should not exceed half of the area of the modeling cell of the three-dimensional basic geological model where the mining area is located. If it exceeds half of the area, it means that the three-dimensional basic geological model has major quality problems or the cross-section drawing of the three-dimensional basic geological model is unreasonable, and the three-dimensional basic geological model needs to be locally updated and optimized.

[0020] Furthermore, in S500, the data sources in the buffer zone are processed, specifically including: fusing geological maps of various scales in the buffer zone, integrating profiles and boreholes, and ensuring consistency of all modeling data sources; the model in the buffer zone is reconstructed by interactive modeling or automatic modeling based on profile-supported geological map constraints, so that the reconstructed model is completely consistent with the buffer zone boundary profile, buffer zone bottom surface, buffer zone surface geological map and other data, so as to achieve seamless splicing of the model.

[0021] Furthermore, in S600, the geometric topology level model fusion is completed, specifically including:

[0022] Quantitatively analyze the error between the new data source and the model, cut the 3D basic geological model from the boundary of the newly added modeling data source, and compare the cut section with the boundary of the new modeling data source;

[0023] Cut out the updated regional model from the 3D basic geological model, cut out the model from the 3D basic geological model according to a certain buffer range, and retain the edge profile and bottom surface of the cutting range, and extract the bottom and side surfaces of the fused model;

[0024] Construct a buffer model, using the buffer boundary surface obtained in the above two steps as the modeling data source, and complete the buffer modeling using automatic modeling or interactive modeling;

[0025] The models are merged and smoothed. The cut 3D basic geological model, the fused model, and the buffer zone model are automatically merged according to the stratigraphic attributes, and the display layers are smoothed at the joints.

[0026] Furthermore, when the quality and accuracy of the mining area geological model are unqualified or the seamless splicing of the mining area geological model and the three-dimensional basic geological model cannot meet the project integration purpose or the buffer zone cannot meet the needs, the model fusion at the display and analysis level is completed. Specifically, the model fusion at the display and analysis level is based on the model conversion and the unification of display parameters and attribute structures, and the mining area model is directly filled into the three-dimensional basic geological model by model cutting, so as to achieve the effect that the mining area model and the three-dimensional basic geological model can be displayed and analyzed together, thereby realizing the fusion at the display and analysis level.

[0027] The beneficial effects of the above technical solutions provided by the embodiments of the present invention include at least:

[0028] The present invention discloses a method for fusing a mining area geological model with a three-dimensional basic geological model, comprising: obtaining the mining area geological model to be fused, performing model format conversion and projection conversion on the mining area geological model, and converting the raster model in the mining area geological model into a vector model; determining the quality and accuracy of the converted mining area geological model; determining whether seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the purpose of project fusion; delineating a buffer zone for model fusion based on the differences between the models to be fused, and determining whether the buffer zone meets the requirements; processing the data source within the buffer zone and reconstructing the model; and completing the fusion of the geometric topology level model. The present invention solves the problem of the difficulty in fusing mining area geological models with three-dimensional basic geological models in the prior art.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a flow chart of a method for fusing a mining area geological model with a three-dimensional basic geological model in Example 1 of the present invention;

[0032] Figure 2 This is a logic diagram of a method for fusing a mining area geological model with a three-dimensional basic geological model in Example 1 of the present invention;

[0033] Figure 3 In Example 1 of the present invention, a technical roadmap of model fusion at the analysis level is displayed. DETAILED DESCRIPTION

[0034] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0035] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a method for fusing a mining area geological model with a three-dimensional basic geological model.

[0036] Example 1

[0037] This embodiment discloses a method for fusing a mining area geological model with a three-dimensional basic geological model. Figure 1 and 2 ,include:

[0038] S100. Obtaining a geological model of the mining area to be fused, performing model format conversion and projection conversion on the geological model of the mining area, and converting the raster model in the geological model of the mining area into a vector model;

[0039] In this embodiment, in S100, MapGIS is used to convert data in various external model formats into MapGIS formats, including obj, 3ds, dae, osgb, osg, stl, xml, and x formats. Projection conversion is performed using the batch projection module in MapGIS, specifically including: setting the source data name, source path, source reference system, destination reference system, and destination database; converting the raster model in the mining area geological model into a vector model using the raster-to-vector module; specifically including: input and output settings, including the grid model path and save path; grid parameters, including the grid origin, grid step size, and grid number in the X, Y, and Z directions; and attribute settings, including the tracking type and attribute fields.

[0040] Specifically, since the 3D basic geological model uses a vector model to represent the geological structure, and the 3D basic geological model has a large range and depth, if the geological structure is represented by a raster model, the amount of data for the raster model will be extremely large. Therefore, the mining area geological structure model is integrated in the form of a 3D vector model.

[0041] S200. Determine the quality and accuracy of the converted mining area geological model; wherein, determine the quality and accuracy of the converted mining area geological model, specifically including: whether the model topology is correct, whether the model can be arbitrarily cut, whether the model results are complete, whether the model data volume is reasonable, whether the model attributes are standardized, whether the spatial reference system of the model is complete, whether the model accuracy is qualified, and whether the model conforms to geological laws.

[0042] Specifically, forcibly integrating a poor-quality mining area model with a 3D basic geological model will only degrade the quality of the resulting 3D basic geological model, completely defeating the purpose of model fusion. Therefore, the following mining area model quality requirements are proposed.

[0043] Among them, correct model topology indicates that the geological body is closed; there are no intersections or overlaps between bodies; and there are no self-intersections, degenerate triangles, or other issues that affect the model's topology. A model that is arbitrarily cuttable indicates that the model supports arbitrary cutting without geometric or topological errors. A complete model output indicates that the structural model includes at least the geological body and fault planes. If additional output includes stratigraphic planes, these should be submitted whenever possible. A reasonable model data volume indicates that the model's grid precision should match the model's geometric accuracy, and there should not be overly dense or overly sparse coordinate points or grid points. Standardized model attributes indicate that the geological structural model must have a stratigraphic code field, using the Shandong Province standard stratigraphic code. Additional fields may be added. A fault model should include fields such as fault code, fault name, fault level, and dip angle. A complete model spatial reference system indicates that the model should have clear and complete spatial reference system information. The geographic coordinate system must use the National 2000 Coordinate System, and the submitted data must include complete map projection parameters. The elevation system uses the 1985 National Elevation Datum. The model accuracy is qualified, which means that the deviation between the mineral deposit model and the modeling data source (including geological maps, surface DEM) should not be too large (the larger the error, the more it affects the model fusion effect and the quality of the fused model), and the model surface elevation is close to the provincial DEM (too large a deviation will affect the aesthetics of the fused surface morphology and the quality of the fused model), and the accuracy of the mineral deposit model should not be lower than that of the three-dimensional basic geological model. The model should conform to basic geological laws, which means that the geological structure expressed by the model does not violate basic geological laws, for example, the stratigraphic sequence of the model should conform to the chronological order of geological ages, etc. The accuracy of the mining area model is not lower than that of the three-dimensional basic geological model, which means that the accuracy of the mining area model requires that the stratigraphic fineness of the mining area model is not lower than that of the three-dimensional basic geological model, and the grid accuracy of the mining area model is not lower than that of the three-dimensional basic geological model, and the density of the mining area modeling data source is not lower than that of the three-dimensional basic geological model.

[0044] S300. Determine whether the seamless connection between the mining area geological model and the basic geological model meets the project integration purpose;

[0045] In S300 of this embodiment, it is determined whether the seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the purpose of project fusion, specifically including: determining whether the purpose of structural model fusion is to merge the effective geological information of multiple geological models into one model; determining whether the purpose of structural model fusion is to solve the problem of inconsistent geological information of the fused models; determining whether the purpose of structural model fusion is to solve the inconsistency problem of the original model while retaining the effective information of the original model; determining whether the purpose of structural model fusion is to reduce the model quality at the geometric topology level.

[0046] Specifically, the fusion of mineral geological model and three-dimensional basic geological model is the fusion of geological structure model, which is the fusion of large-scale small-scale mining area model into small-scale large-scale three-dimensional basic geological model. Therefore, we must first make a clearer definition of the fusion of this mineral deposit and the three-dimensional geological structure model of different scales in the province.

[0047] The ideal state of model fusion is seamless splicing and traceless transition of the fused models. However, the reality is that many seamless splicing and traceless transitions will violate the requirements of the following four model fusion definitions. In this case, model fusion should be performed at the model display and analysis level.

[0048] 1. The fundamental purpose of structural model fusion is to merge the effective geological information of multiple geological models into one model to facilitate model display, analysis and application; specifically:

[0049] 1) The inconvenience of displaying, analyzing and applying multiple models in the same region has given rise to the need for model fusion

[0050] 2) Using 3D modeling, model display and analysis to merge information from multiple models into one model is the fundamental purpose of model fusion.

[0051] 3) The fused model should completely replace the model before fusion in the display analysis application scenario, without losing the effective information of the original model

[0052] 2. Model fusion is not modeling. The purpose of fusion is not to produce new geological data information, but to solve the problem of inconsistent geological information of the fused models; specifically:

[0053] The geological structural elements unique to large-scale models, such as small faults, small strata, and small folds within the mining area modeling range, should not be extended to the three-dimensional basic geological model. This extension belongs to the construction of a new large-scale model around the mining area. This is within the scope of modeling work and is the production of new geological information, which does not meet the definition of model fusion.

[0054] 3. Model fusion must resolve inconsistencies in the original model while retaining its effective information. Specifically:

[0055] 1) In the application scenario of model display and analysis, the fused model should be able to completely replace the original model without losing the effective geological information provided by the original model

[0056] 2) When the geological information of multiple models is inconsistent, the original model and the valid information of the original modeling data source should be combined to give a unique and reasonable geological explanation.

[0057] 4. Model fusion at the geometric topology level must not degrade model quality. Otherwise, only fusion at the display and analysis level can be performed. Specifically:

[0058] Seamlessly integrating a low-quality model into a 3D basic geological model only results in a lower quality model, which is a thankless task. Before model integration, the quality of the model to be integrated needs to be evaluated. Elements of a high-quality model include acceptable model accuracy, conformance to basic geological laws, good topological correctness, minimal data redundancy, and other model data standardization requirements. The quality of the integrated model should be no less than that of the original model.

[0059] 1) Qualified model accuracy: The deviation between the model and the modeling data source should not be too large, the model surface elevation should be close to the provincial DEM, and the model accuracy should be no less than that of the Shandong 3D basic geological model.

[0060] 2) The model complies with basic geological laws: The geological structure expressed by the model does not violate basic geological laws. For example, the stratigraphic sequence should conform to the chronological order of geological ages.

[0061] 3) Good topological correctness: The geological body is closed, without self-intersection, degenerate triangles and other topological problems, and there is no overlap or gap between geological bodies.

[0062] 4) Less data redundancy: The triangulation density of the structural model and the mesh accuracy of the attribute model should match the model accuracy, and the data volume of the model should not significantly exceed the reasonable data volume.

[0063] However, low-quality deposit models still provide some valid geological information not found in the 3D basic geological model. Therefore, low-quality deposit models are handled by performing model fusion only for display and analysis. The deficiencies and valid geological information of low-quality deposit models are fully preserved, leaving it up to the model users to identify and optimize relevant model results to eliminate model quality issues.

[0064] S400. According to the differences in the models to be fused, a buffer zone for model fusion is defined, and it is determined whether the buffer zone meets the requirements;

[0065] In S400 of this embodiment, the size of the buffer zone is manually determined based on the difference between the mining area geological model and the 3D basic geology. Specifically, the greater the geological difference between the two models to be fused, the larger the buffer zone. Determining whether the buffer zone meets the requirements specifically includes determining whether the buffer zone is too large. The buffer zone should not exceed half the area of the modeling cell of the 3D basic geology model where the mining area is located. If the buffer zone exceeds half the area, it indicates that the 3D basic geology model has major quality issues or the cross-section drawing of the 3D basic geology model is unreasonable, and a local update and optimization of the 3D basic geology model is required.

[0066] Specifically, the size of the buffer zone is manually determined based on the differences between the mining area model and the 3D basic geological model. In principle, the greater the difference between the two models, the larger the buffer zone. However, there's no strict quantitative relationship between the two. Geologists manually define a model buffer zone based on geological experience. This buffer zone can also be understood as the update range for the entire province's model during the model fusion process.

[0067] S500. Processing the data sources in the buffer zone and reconstructing the model; in this embodiment, in S500, processing the data sources in the buffer zone, specifically including: fusing the geological maps of various scales in the buffer zone, integrating the profiles and boreholes, and ensuring the consistency of all modeling data sources; reconstructing the model in the buffer zone is done through interactive modeling or automatic modeling based on the constraints of the profile-supported geological map, so that the reconstructed model is completely consistent with the data such as the buffer zone boundary profile, the buffer zone bottom surface, and the buffer zone surface geological map, so as to achieve seamless splicing of the model.

[0068] S600. Complete the geometric topology level model fusion. Specifically, in S600, the geometric topology level model fusion is completed, which specifically includes:

[0069] Quantitatively analyze the error between the new data source and the model, cut the 3D basic geological model from the boundary of the newly added modeling data source, and compare the cut section with the boundary of the new modeling data source;

[0070] Cut out the updated regional model from the 3D basic geological model, cut out the model from the 3D basic geological model according to a certain buffer range, and retain the edge profile and bottom surface of the cutting range, and extract the bottom and side surfaces of the fused model;

[0071] Construct a buffer model, using the buffer boundary surface obtained in the above two steps as the modeling data source, and complete the buffer modeling using automatic modeling or interactive modeling;

[0072] The models are merged and smoothed. The cut 3D basic geological model, the fused model, and the buffer zone model are automatically merged according to the stratigraphic attributes, and the display layers are smoothed at the joints.

[0073] It should be noted that the buffer zone and buffer zone modeling method involved in the above steps. The size of the buffer zone radius should be determined according to the difference between the provincial model and the fused model. The greater the difference between the two, the larger the buffer zone, so as to better control the consistency of the boundaries of the two after the model fusion. For the modeling method of the buffer zone, for cases where the difference is not too large, the automatic modeling of the buffer zone can be automatically completed through profile automatic modeling or implicit modeling methods. When the difference between the two models is too large, geological professionals may need to participate in interactive modeling, because the large difference generally means that the geological structure here may be too complex, or the new geological data source in the fused model has given this area a new geological understanding of the geological structure. In this case, the geological structure and geological laws in the buffer zone need to be reinterpreted based on the experience of geological experts, so this situation requires interactive modeling to ensure model accuracy and update the geological understanding of this area.

[0074] Updates to 3D geological models can be categorized as global updates, local updates, and model updates based on their scale. Depending on the degree of update, 3D geological models can be categorized as complete updates and local updates. A complete update directly replaces the existing geological model with a new one, while a local update updates the existing model by modifying its spatial position, geometry, topological relationships, and semantic relationships. Complete updates are primarily suitable for geological models with large data volumes that require frequent updates, such as monthly current surface models of open pits. When a new borehole is added, local updates can be performed on lithologic models, ore body models, weathering surface models, and other models within the borehole's influence range.

[0075] In some preferred embodiments, when the quality and accuracy of the mining area geological model are unqualified or the seamless splicing of the mining area geological model and the basic geological model cannot meet the project fusion purpose or the buffer zone cannot meet the requirements, the display analysis level model fusion is completed, specifically, Figure 3 Model fusion at the display and analysis level is based on model conversion and the unification of display parameters and attribute structures. The mining area model is directly "filled" into the provincial model through model cutting, so that the mining area model and the provincial model can be displayed and analyzed together, realizing the integration of the display and analysis levels. Due to various reasons, the inconsistencies between the two at the geometric and topological level cannot be handled. Therefore, the original information of the two models is retained, the geological structure of the two is not changed, and no seamless splicing processing at the geometric and topological level is performed.

[0076] This embodiment discloses a method for fusing a mining area geological model with a three-dimensional basic geological model, comprising: obtaining the mining area geological model to be fused, performing model format conversion and projection conversion on the mining area geological model, and converting the raster model in the mining area geological model into a vector model; determining the quality and accuracy of the converted mining area geological model; determining whether seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the purpose of project fusion; delineating a buffer zone for model fusion based on the differences between the models to be fused, and determining whether the buffer zone meets the requirements; processing the data source within the buffer zone and reconstructing the model; and completing model fusion at the geometric topology level. The present invention solves the problem of difficulty in fusing mining area geological models with three-dimensional basic geological models in the prior art.

[0077] It should be understood that the specific order or hierarchy of steps in the disclosed processes is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0078] In the foregoing detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that embodiments of the claimed subject matter require more features than are expressly recited in each claim. On the contrary, as reflected in the appended claims, the invention comprises less than all the features of any individual disclosed embodiment. The appended claims are therefore hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0079] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein may be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps described above are generally described around their functions. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. A skilled person may implement the described functions in an adaptable manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of this disclosure.

[0080] The steps of the methods or algorithms described in conjunction with the embodiments herein may be directly embodied as hardware, software modules executed by a processor, or a combination thereof. The software module may be located in a RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, register, hard disk, removable disk, CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and storage medium may be located in an ASIC. The ASIC may be located in a user terminal. Of course, the processor and storage medium may also be present in a user terminal as discrete components.

[0081] For software implementation, the techniques described in this application can be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described in this application. These software codes can be stored in a memory unit and executed by a processor. The memory unit can be implemented within the processor or external to the processor. In the latter case, it is communicatively coupled to the processor via various means, which are well known in the art.

[0082] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purposes of describing the above embodiments, but one of ordinary skill in the art will recognize that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent the term "comprising" is used in the specification or claims, the term is intended to be encompassed in a manner similar to the term "including," as explained in terms of "including," used as a transitional word in the claims. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or."

Claims

1. A method for fusing a mining area geological model with a three-dimensional basic geological model, characterized in that: include: S100. Obtaining a geological model of the mining area to be fused, performing model format conversion and projection conversion on the geological model of the mining area, and converting the raster model in the geological model of the mining area into a vector model; S200. Determine the quality and accuracy of the converted mining area geological model; S300. Determine whether the seamless connection between the mining area geological model and the 3D basic geological model satisfies the project integration purpose; S400. According to the differences in the models to be fused, a buffer zone for model fusion is defined, and it is determined whether the buffer zone meets the requirements; S500. Processing and model reconstruction of data sources within the buffer zone; In S500, processing of data sources within the buffer zone includes: fusing geological maps of various scales within the buffer zone, integrating sections and boreholes, and ensuring consistency of all modeling data sources; reconstructing the model within the buffer zone by interactive modeling or automatic modeling based on section-supported geological map constraints, so that the reconstructed model is completely consistent with the buffer zone boundary section, buffer zone bottom surface, and buffer zone surface geological map data, so as to achieve seamless model splicing; S600. Complete geometric topology model fusion; In S600, complete geometric topology model fusion, specifically including: Quantitatively analyze the error between the new data source and the model, cut the 3D basic geological model from the boundary of the newly added modeling data source, and compare the cut section with the boundary of the new modeling data source; Cut out the updated regional model from the 3D basic geological model, cut out the model from the 3D basic geological model according to a certain buffer range, and retain the edge profile and bottom surface of the cutting range, and extract the bottom and side surfaces of the fused model; Construct a buffer model, using the buffer boundary surface obtained in the above two steps as the modeling data source, and complete the buffer modeling using automatic modeling or interactive modeling; The models are merged and smoothed. The cut 3D basic geological model, the fused model, and the buffer zone model are automatically merged according to the stratigraphic attributes, and the display layers are smoothed at the joints.

2. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S100, MapGIS is used to convert data in various external model formats into MapGIS formats, including obj, 3ds, dae, osgb, osg, stl, xml and x formats.

3. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S100, projection conversion is performed through the batch projection module in MapGIS, which specifically includes: setting the source data name, source path, source reference system, destination reference system and destination database; converting the raster model in the mining area geological model into a vector model through the raster to vector module; specifically including: input and output settings, including grid model path and save path; grid parameters, including grid origin, grid step size and grid number in X, Y and Z directions; attribute settings, including tracking type and attribute fields.

4. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S200, the quality and accuracy of the converted mining area geological model are judged, including: whether the model topology is correct, whether the model can be cut arbitrarily, whether the model results are complete, whether the model data volume is reasonable, whether the model attributes are standardized, whether the spatial reference system of the model is complete, whether the model accuracy is qualified, and whether the model conforms to geological laws.

5. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S300, it is determined whether the seamless splicing of the mining area geological model and the three-dimensional basic geological model meets the purpose of project fusion, specifically including: determining whether the purpose of structural model fusion is to merge the effective geological information of multiple geological models into one model; determining whether the purpose of structural model fusion is to solve the problem of inconsistent geological information of the fused models; determining whether the purpose of structural model fusion is to solve the inconsistency problem of the original model while retaining the effective information of the original model; determining whether the purpose of structural model fusion is to reduce the model quality at the geometric topology level.

6. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S400 , the size of the buffer zone is manually determined based on the difference between the mining area geological model and the three-dimensional basic geology; the greater the geological difference between the two models to be fused, the larger the buffer zone.

7. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: In S400, it is determined whether the buffer zone meets the requirements, specifically including: determining whether the buffer zone is too large. The buffer zone range should not exceed half of the area of the modeling cell of the three-dimensional basic geological model where the mining area is located. If it exceeds half of the area, it means that the three-dimensional basic geological model has major quality problems or the cross-section drawing of the three-dimensional basic geological model is unreasonable, and the three-dimensional basic geological model needs to be locally updated and optimized.

8. The method for fusing a mining area geological model with a three-dimensional basic geological model according to claim 1, characterized in that: When the quality and accuracy of the mining area geological model are unqualified or the seamless splicing of the mining area geological model and the three-dimensional basic geological model cannot meet the project integration purpose or the buffer zone cannot meet the needs, the model fusion at the display and analysis level is completed. The model fusion at the display and analysis level is based on the model conversion and the unification of display parameters and attribute structures. The mining area model is directly filled into the three-dimensional basic geological model by model cutting, so that the mining area model and the three-dimensional basic geological model can be displayed and analyzed together, realizing the fusion at the display and analysis level.

Images