Geological data development auxiliary system based on 3D GIS

Abstract

The invention belongs to the field of geological data development, and particularly discloses a geological data development auxiliary system based on a 3D GIS, and the system comprises a data layer module which is used for carrying out the storage and management of common standard format geological data and natural resource data, obtaining a structural plane and a geological boundary line, and obtaining stratigraphic structure data; the three-dimensional model construction module is used for constructing a basic stratigraphic structure model through the data of the data layer module based on a geometric structure engine, constructing a fault class surface model through the stratigraphic structure data and integrating the basic stratigraphic structure model and the fault class surface model to construct a three-dimensional geologic body model, and the models are connected through a common line; according to the method, the three-dimensional geologic body model is constructed through the 3D GIS technology, the geological structure and rock combination is accurately simulated by constructing irregular geologic body models such as invading bodies, inclusion bodies and clamping stones, high intuition and authenticity are achieved, and the technical level and efficiency of geological data development and utilization are effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of geological data development, and in particular relates to a geological data development auxiliary system based on 3D GIS. Background Art

[0002] Mineral resources are the material basis for human survival and development. The mining of prospecting information is the most original information such as various texts and images collected during geological surveys. Its greatest feature is its originality, basicity and authenticity.

[0003] However, for a long time, the simulation and expression of geological information have adopted cross-sections and plan views. The essence of this form of expression is to reflect the strata, landforms, structures and some geological phenomena in three-dimensional space on a certain plane for expression. This method mainly relies on the judgment of experts on stratigraphic information, and requires a high level of experience from geologists. The accuracy and precision of the judgment are sometimes quite different from the actual situation. Summary of the invention

[0004] The purpose of the present invention is to provide a geological data development auxiliary system based on 3D GIS to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A geological data development auxiliary system based on 3D GIS, including a data layer module, used for the storage and management of geological data and natural resource data in common standard formats, obtaining structural surfaces and geological boundaries, and obtaining stratigraphic structural data;

[0007] A three-dimensional model building module, based on a geometric structure engine, builds a basic stratigraphic structure model through the data layer module data, builds a fault-like surface model through the stratigraphic structure data, and integrates the basic stratigraphic structure model with the fault-like surface model to build a three-dimensional geological body model, and the models are connected by common lines;

[0008] A model checking module, used for quality control of the three-dimensional geological model;

[0009] A regular volume element library module is used to store geometric bodies of regular shapes and determine the boundary morphology of irregular geological bodies in the three-dimensional geological body model through Boolean operations;

[0010] The system management module is used for managing the regular volume library module and supports its geometric transformation operations of scaling, translation, stretching and rotation. The operation results participate in the local update of the three-dimensional geological body model.

[0011] Preferably, the geological data include topographic geological maps, drill holes, exploration trenches, profiles and sample analysis results, and the natural resource data include "three zones and three lines" data, land survey data, basic farmland data and terrain-level real-scene three-dimensional data.

[0012] Preferably, the structural surface includes a fault surface and an unconformity surface; the geological interface includes a stratigraphic interface, a magmatic rock body interface, a sedimentary phase interface, an ore body interface and an alteration zone interface.

[0013] Preferably, the three-dimensional geological body model is used to express the spatial distribution and correlation of geological bodies and structural structures, fully describe the main geological features, have spatial information and topological relationships, and meet the requirements of local update and full update.

[0014] Preferably, the three-dimensional geological body model includes a borehole model, a trench model, a geological structure model, a stratum model, an intrusive rock model and an ore body model.

[0015] Preferably, the geometric structure engine realizes the construction of a three-dimensional geological model by using computer graphics algorithms through TIN, Gird surface model, CSG regular voxel, TIN-CSG hybrid model, OpenGL as the underlying three-dimensional graphics library, OSG as the three-dimensional rendering engine.

[0016] Preferably, the model checking module includes rationality checking, accuracy checking and completeness checking;

[0017] The rationality check is to use three-dimensional views and random sections to check the morphological characteristics, spatial distribution, boundary range, occurrence and mutual constraints of various geological boundaries, and the morphology, boundaries and mutual relations of various geological entities;

[0018] The accuracy check is to use measurement and statistical functions to check the accuracy of the model and the consistency between the model and basic data and analytical data;

[0019] The integrity check uses statistics and query functions to check the integrity of model elements and that the attribute model value is not empty.

[0020] Preferably, the system further comprises an editing module for editing and modifying the three-dimensional geological body module, wherein the editing module comprises geological point editing, geological line marking, geological surface editing and geological body editing;

[0021] The geological point editor is used to modify, add and delete the geological data and the spatial position of the geological points;

[0022] The geological line editor is used to create, delete, add points on the line, delete points on the line, move points on the line, cut the line, and connect the line elements of the geological line. The linear elements include surface lines, contour lines, fault lines, and fold lines.

[0023] The geological surface editor is used to add points on the geological surface, delete points on the surface, move points on the surface, fit the surface, extrapolate the surface, and find the intersection of the surface;

[0024] The geological body editor is used for moving, merging, deleting and splitting geological bodies.

[0025] Preferably, the system further comprises a data application module for bidirectionally querying, displaying and outputting spatial data and attribute data of the three-dimensional geological body model.

[0026] Preferably, the system management module is also used to edit formation parameters and update them in real time. The formation parameters include formation name, code, color and pattern standards.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention uses 3D GIS technology to perform data modeling on geological entities and construct a three-dimensional geological body model. By defining a regular voxel library, according to the spatial distribution characteristics of geological bodies such as intrusions, inclusions, and intercalated rocks, human-computer interaction is adopted, and these regular voxels are scaled, translated, rotated, stretched, and other geometric transformations and mutual Boolean operations (union, intersection, and difference) are performed through a system management module to determine their boundary shapes, and then irregular geological body models such as intrusions, inclusions, and intercalated rocks are constructed to accurately simulate geological structures and rock combinations. The present invention has strong intuitiveness and authenticity, can more quickly reflect the actual geological situation, and effectively improve the technical level and efficiency of geological data development and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 It is a system module block diagram of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] As attached Figure 1 As shown:

[0035] Embodiment 1: This embodiment provides a geological data development auxiliary system based on 3D GIS, including a data layer module, which is used for the storage and management of geological data and natural resource data in common standard formats, obtaining structural surfaces and geological boundaries, and obtaining stratigraphic structural data. The database is SQLite, which meets the performance requirements of data type, data volume, element category and data access;

[0036] The 3D model building module, based on the geometric structure engine, builds the basic stratigraphic structure model through the data layer module data, builds the fault surface model through the stratigraphic structure data, and integrates the basic stratigraphic structure model with the fault surface model to build a 3D geological body model. The models are connected by common lines.

[0037] Model checking module, used for quality control of 3D geological models;

[0038] The regular volume element library module is used to store geometric bodies of regular shapes and determine the boundary morphology of irregular geological bodies in the three-dimensional geological body model through Boolean operations;

[0039] The system management module is used to manage the regular volume library module and supports its geometric transformation operations such as scaling, translation, stretching, and rotation. The operation results participate in the local update of the three-dimensional geological model.

[0040] The data layer module is used to store and manage geological data and natural resource data, and to realize the measurement of attribute tables, editing and updating of graphic geometry and graphic attributes. Geological data is one of the important bases for the development and utilization of geological data. The stratigraphic structure data is obtained, and then the three-dimensional model construction module is used to build a three-dimensional geological body model based on 3D GIS. The basic stratigraphic structure model adopts the TIN-Gird hybrid model, which is automatically constructed using borehole interpolation and profile wireframe; the fault surface model is automatically constructed using the TIN model; finally, the data models are integrated. After integration, the models are connected by common lines, but each data model can still be operated and displayed independently. The three-dimensional geological body model accurately simulates the geological structure and rock combination in a visual way, which has strong intuitiveness and authenticity, and can reflect the geological reality more quickly, thereby providing important information on resource distribution, mineralization laws, ore deposit locations, exploration directions, etc., and provides new ideas and methods for screening exploration bases, optimizing prospecting targets, regenerating "dead mines", changing "poor" mines into "rich" mines, and transferring mining rights, effectively improving the technical level and efficiency of geological data development and utilization;

[0041] The regular voxel library module is used to define the regular voxel library, which stores some cubes, cuboids, cylinders, spheres, cones, cones, triangular prisms, etc. with regular shapes; based on the spatial distribution characteristics of geological bodies such as intrusions, inclusions, and interlayers, human-computer interaction is used to perform geometric transformations such as scaling, translation, rotation, and stretching on these regular voxels and Boolean operations (union, intersection, and difference) on each other through the system management module, so as to determine their boundary shapes and then construct models of irregular geological bodies such as intrusions, inclusions, and interlayers.

[0042] Specifically, geological data include topographic geological maps, drilling holes, exploration trenches, profiles and sample analysis results; natural resource data include "three zones and three lines" data, land survey data, basic farmland data and terrain-level real-life three-dimensional data.

[0043] Specifically, structural surfaces include fault planes and unconformity surfaces; geological interfaces include stratigraphic interfaces, magmatic rock interfaces, sedimentary phase interfaces, ore body interfaces and alteration zone interfaces.

[0044] Specifically, the three-dimensional geological body model is used to express the spatial distribution and correlation of geological bodies and structural structures, fully describe the main geological features, have spatial information and topological relationships, and meet the requirements of partial and full updates;

[0045] From three main perspectives, namely, three-dimensional geometric structure, topological structure and attribute information, the three-dimensional shape restoration of geological conditions is completed through human-computer interaction. Among them, the three-dimensional geometric structure is the most intuitive. Geological modeling is expressed by geometric elements such as points, lines, surfaces and bodies. Topological structure is an important branch of three-dimensional geometry, which mainly refers to the spatial relationship between points, lines, surfaces and bodies. Attribute information mainly refers to various geological exploration data, such as the composition, porosity, permeability and so on of the target rock formation. Finally, by establishing a scientific and effective database, the attributes, spatial position, time series and reliability of geological data are recorded in detail to build a more accurate and reliable three-dimensional geological body model.

[0046] It can meet the needs of local update and full update, and realize local rapid dynamic update of 3D geological model.

[0047] Specifically, the three-dimensional geological body model includes a borehole model, a trench model, a geological structure model, a stratum model, an intrusive rock model and an ore body model;

[0048] Borehole model attribute structure: borehole number, coordinate position, final hole depth, layer information and lithology, etc.;

[0049] Trench model attribute structure: trench direction, trench size, stratum lithology description, sampling conditions, etc.

[0050] Attribute structure of geological structure model: number, type, occurrence, nature, combination form, etc.;

[0051] Stratigraphic model attribute structure: stratigraphic unit, lithologic combination, contact relationship, occurrence, stratigraphic attribution, stratigraphic sequence, stratigraphic thickness, formation age, etc.;

[0052] Intrusive rock model attribute structure: geological unit affiliation, lithology, lithofacies, contact relationship, formation sequence, formation age, etc.;

[0053] Ore body model attribute structure: ore body type, occurrence, volume, etc.

[0054] Specifically, the geometry engine realizes the construction of three-dimensional geological model by using computer graphics algorithms through TIN, Gird surface model, CSG regular voxel, TIN-CSG hybrid model, OpenGL as the underlying three-dimensional graphics library, OSG as the three-dimensional rendering engine.

[0055] Specifically, the model checking module includes rationality check, accuracy check and completeness check;

[0056] The rationality check is to use three-dimensional views and random sections to check the morphological characteristics, spatial distribution, boundary range, occurrence and mutual constraints of various geological boundaries, and the morphology, boundaries and mutual relationships of various geological entities;

[0057] Accuracy check is to use measurement and statistical functions to check the accuracy of the model and the consistency between the model and basic data and analytical data;

[0058] The integrity check uses statistics and query functions to check the integrity of model elements and that the attribute model value is not empty;

[0059] Determine the rationality, accuracy, and completeness of the modeling.

[0060] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that, specifically, the system further includes an editing module for editing and modifying the three-dimensional geological body module, and the editing module includes geological point editing, geological line marking, geological surface editing and geological body editing;

[0061] Geological point editing is used to modify, add and delete geological data and the spatial location of geological points;

[0062] Geological line editing is used to create, delete, add points on the line, delete points on the line, move points on the line, cut lines, and connect lines. Linear elements include surface lines, contour lines, fault lines, and fold lines.

[0063] Geological surface editing is used to add points, delete points, move points, fit surfaces, extrapolate surfaces, and intersect surfaces.

[0064] Geological body editing is used to move, merge, delete and split geological bodies;

[0065] Through the editing module, various vector shear analyses can be performed on the constructed three-dimensional geological model, and then the excavation volume can be counted or the geological structure can be analyzed, providing analysis and design tools for geological work; vector shear analysis includes vector shear between regular spatial lines, surfaces, bodies, etc., and also includes vector shear between irregular spatial lines, surfaces, bodies, etc.; for vector shear analysis of large-scale digital geological bodies with complex three-dimensional structures, the three-dimensional spatial entity relationship after shearing can be quickly reconstructed through background shearing operations.

[0066] Specifically, the system also includes a data application module for bidirectional query, display and output of spatial data and attribute data of three-dimensional geological body models; realizing sectioning, shallow pit and tunnel virtual excavation analysis, and drilling virtual drilling visualization shearing operation and analysis; realizing excavation earthwork volume calculation, slope calculation, profile calculation, and spatial statistical analysis of three-dimensional geological bodies; and supporting user interaction and visualization operations, including model scaling and roaming, geological data stratification, geological attribute display, display ratio control, display range control, display sequence control, etc.

[0067] Specifically, the system management module is also used to edit formation parameters and update them in real time. The formation parameters include formation name, code, color and pattern standards.

[0068] As can be seen from the above, geological data and natural resource data are stored and managed through the data layer module, and attribute table measurement, graphic geometry and graphic attribute editing and updating are realized. Geological data is one of the important bases for the development and utilization of geological data. The stratigraphic structure data is obtained, and then the three-dimensional model construction module is used to build a three-dimensional geological body model based on 3D GIS. The basic stratigraphic structure model adopts the TIN-Gird hybrid model, which is automatically constructed using borehole interpolation and profile wireframe; the fault surface model is automatically constructed using the TIN model; finally, the data models are integrated. After integration, the models are connected by common lines, but each data model can still be operated and displayed independently. The three-dimensional geological body model accurately simulates the geological structure and rock combination in a visual way, which has strong intuitiveness and authenticity, and can reflect the geological reality more quickly, thereby providing important information on resource distribution, mineralization law, ore deposit location, exploration direction, etc., and provides new ideas and methods for screening exploration bases, optimizing prospecting targets, regenerating "idle mines", changing "poor" mines into "rich" mines, and transferring mining rights, effectively improving the technical level and efficiency of geological data development and utilization;

[0069] The regular voxel library module is used to define the regular voxel library, which stores some cubes, cuboids, cylinders, spheres, cones, cones, triangular prisms, etc. with regular shapes; according to the spatial distribution characteristics of geological bodies such as intrusions, inclusions, and intercalated rocks, human-computer interaction is used to perform geometric transformations such as scaling, translation, rotation, and stretching on these regular voxels and Boolean operations (union, intersection, and difference) between them through the system management module, so as to determine their boundary shapes, and then construct irregular geological body models such as intrusions, inclusions, and intercalated rocks;

[0070] Realize 3D geological modeling, 3D scene operation and model analysis application functions.

[0071] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0072] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A geological data development auxiliary system based on 3D GIS, characterized in that: include: The data layer module is used to store and manage geological data and natural resource data in common standard formats, obtain structural surfaces and geological boundaries, and obtain stratigraphic structural data; A three-dimensional model building module, based on a geometric structure engine, builds a basic stratigraphic structure model through the data layer module data, builds a fault-like surface model through the stratigraphic structure data, and integrates the basic stratigraphic structure model with the fault-like surface model to build a three-dimensional geological body model, and the models are connected by common lines; A model checking module, used for quality control of the three-dimensional geological model; A regular volume element library module is used to store geometric bodies of regular shapes and determine the boundary morphology of irregular geological bodies in the three-dimensional geological body model through Boolean operations; The system management module is used for managing the regular volume library module and supports its geometric transformation operations of scaling, translation, stretching and rotation. The operation results participate in the local update of the three-dimensional geological body model.

2. The 3D GIS-based geological data development auxiliary system according to claim 1, characterized in that: The geological data include topographic geological maps, drilling holes, exploration trenches, profiles and sample analysis results; the natural resource data include "three zones and three lines" data, land survey data, basic farmland data and terrain-level real-scene three-dimensional data.

3. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The structural surfaces include fault surfaces and unconformity surfaces; the geological interfaces include stratigraphic interfaces, magmatic rock body interfaces, sedimentary phase interfaces, ore body interfaces and alteration zone interfaces.

4. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The three-dimensional geological body model is used to express the spatial distribution and correlation of geological bodies and structural structures, fully describe the main geological features, have spatial information and topological relationships, and meet the requirements of local update and full update.

5. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The three-dimensional geological body model includes a borehole model, a trench model, a geological structure model, a stratum model, an intrusive rock model and an ore body model.

6. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The geometric structure engine realizes the construction of a three-dimensional geological body model by using computer graphics algorithms through TIN, Gird surface model, CSG regular voxel, TIN-CSG hybrid model, OpenGL as the underlying three-dimensional graphics library, OSG as the three-dimensional rendering engine.

7. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The model checking module includes rationality checking, accuracy checking and completeness checking; The rationality check is to use three-dimensional views and random sections to check the morphological characteristics, spatial distribution, boundary range, occurrence and mutual constraints of various geological boundaries, and the morphology, boundaries and mutual relations of various geological entities; The accuracy check is to use measurement and statistical functions to check the accuracy of the model and the consistency between the model and basic data and analytical data; The integrity check uses statistics and query functions to check the integrity of model elements and that the attribute model value is not empty.

8. The 3D GIS-based geological data development auxiliary system according to claim 1, characterized in that: The system further comprises an editing module for editing and modifying the three-dimensional geological body module, wherein the editing module comprises geological point editing, geological line marking, geological surface editing and geological body editing; The geological point editor is used to modify, add and delete the geological data and the spatial position of the geological points; The geological line editor is used to create, delete, add points on the line, delete points on the line, move points on the line, cut the line, and connect the line elements of the geological line. The linear elements include surface lines, contour lines, fault lines, and fold lines. The geological surface editor is used to add points on the geological surface, delete points on the surface, move points on the surface, fit the surface, extrapolate the surface, and find the intersection of the surface; The geological body editor is used for moving, merging, deleting and splitting geological bodies.

9. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The system also includes a data application module for bidirectionally querying, displaying and outputting spatial data and attribute data of the three-dimensional geological body model.

10. The geological data development auxiliary system based on 3D GIS according to claim 1, characterized in that: The system management module is also used to edit formation parameters and update them in real time. The formation parameters include formation name, code, color and pattern standard.

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