A three-dimensional geological structure method for weathered granite rare earth ore

Abstract

A three-dimensional geological structure method for a weathered granite rare earth mine comprises the following steps: (1) obtaining exploration data of a plurality of exploration holes, extracting drilling data from the exploration data, and integrating data into modeling data according to the drilling data; (2) compiling geological maps through modeling data, and establishing a three-dimensional geological map according to two-dimensional geological plane map data; (3) establishing a main three-dimensional geological structure design profile of a rare earth mine through cross-blocking and layering, and revealing the underground geological conditions of the profile domain; (4) generating a stratigraphic entity through the stratigraphic profile, extracting stratigraphic data from the exploration data, using the stratigraphic data as the project parameters of the stratigraphic entity, and generating a three-dimensional geological model through the stratigraphic entity. The present invention can effectively and quickly perform three-dimensional geological modeling, and improve the efficiency of modeling profile drawing and the accuracy of the model by using an adversarial network.

Description

Technical Field

[0001] The invention relates to the technical field of geological model construction, and proposes a three-dimensional geological construction method for granite rare earth ore in a weathering layer in view of the underground structure and reserves of heavy rare earth ore geological resources in a granite weathering zone. Background Art

[0002] With the scarcity of mineral resources and the improvement of environmental protection awareness, in-situ leaching technology provides technical support for the comprehensive utilization of resources in order to make full use of the three rare resources with low grade, complex composition, difficult to mine and high strategic position. However, due to the lack of clear understanding of the distribution and structure of underground resource reserves, the traditional data collection based on drilling data is expensive, and the sparse distribution of drilling holes leads to insufficient precision of three-dimensional modeling. To this end, the development of three-dimensional visual mining geological structure simulation can accurately predict the boundary range of underground mineral resources, formulate reliable treatment plans and technical measures, reduce construction costs, and provide data guarantee for the formulation of reasonable geological disaster prevention measures and emergency plans to ensure that the valuable metals in the ore body can be efficiently recovered and utilized.

[0003] Three-dimensional geological modeling technology is a new technology for geological analysis in a three-dimensional virtual environment, which combines tools such as spatial information management, geological interpretation, spatial analysis and prediction, geostatistics, entity content analysis, and graphic visualization. It overcomes complex geological problems that cannot be solved in traditional two-dimensional environments and has a wide range of application values ​​in the aspects of accurate estimation of ore reserves, geological structural forms expressed by geological planes and profiles, geological three-dimensional spatial analysis, geological structures and spatial forms of geological bodies, morphological structures of ore bodies, and accurate delineation of ore bodies. However, the use of block-section three-dimensional modeling for weathered granite ore bodies with large areas, few data, and difficult modeling is currently insufficient in terms of module division and data integration. Summary of the invention

[0004] The purpose of the present invention is to provide a three-dimensional geological structure method for rare earth ore in weathering layer granite. It is difficult to effectively use existing multidisciplinary data for three-dimensional modeling in weathering layer granite. By using NoSQL database through data integration and file format conversion, the cross-block-layer modeling idea is used to improve the efficiency and authenticity of three-dimensional geological modeling in large areas of mineralization belts, delineate the mining range for rare earth ore in weathering layer granite, provide a good regional environment for in-situ leaching of rare earth ore, and realize comprehensive utilization of resources.

[0005] To achieve the above purpose, the technical solution of the present invention is: a three-dimensional geological structure method for weathered granite rare earth ore, including three-dimensional visualization imaging of geological exploration of various metal mines, the specific steps are as follows:

[0006] (1) acquiring exploration data of a plurality of exploration holes, extracting drilling data from the exploration data, and integrating the drilling data into modeling data;

[0007] (2) Carry out geological mapping through modeling data and establish a three-dimensional geological map based on the two-dimensional geological plane map data;

[0008] (3) Establish the main three-dimensional geological structure design profile of the rare earth mine through cross-blocking and layering to reveal the underground geological conditions of the profile area;

[0009] (4) Generating a stratigraphic entity through the stratigraphic profile, extracting stratigraphic data from the exploration data, using the stratigraphic data as project parameters of the stratigraphic entity, and generating a three-dimensional geological model through the stratigraphic entity.

[0010] The method of acquiring a plurality of exploration hole data and extracting drilling hole data from the exploration data comprises:

[0011] Organize relevant data, including geographic data, basic geological data, remote sensing data, geophysical data, physical / chemical analysis and testing data of weathered granite, and mineral deposit drilling exploration data;

[0012] Using the above basic data and NoSQL database, a three-dimensional geological basic database is established, including point, line and surface databases. Through the MongoDB non-relational database, a three-dimensional ore body geological model is established.

[0013] The step (3) of establishing underground geological conditions of the main profile of the rare earth mine by cross-blocking and layering includes:

[0014] According to the characteristics of the area around the rare earth mine, based on the geological database data, the geological profile modeling is established by block-layering through the cross-block-layer modeling idea, including the main profile, constraint profile and modeling profile, and the gravity-magnetic joint inversion is used to make the profile conform to the underground geological laws;

[0015] Screen the modules and conduct grid modeling by blocks, layers and regions, including rock mass and non-rock mass, and combine all rock mass and non-rock mass to build a module set;

[0016] Taking the building block as the unit, a cross-constraint section is established. Under the constraint of the constraint section, a modeling section parallel to the constraint section is established.

[0017] The step (4) of generating a three-dimensional geological model through the stratum entity includes:

[0018] (1) Surface model construction: digital elevation model data acquisition and remote sensing image overlay;

[0019] (2) Establish a three-dimensional geological model.

[0020] The three-dimensional geological model is generated by using the underground geological body model, including: using the Delaunay triangulation algorithm to generate a TIN triangulation network to form an underground geological model.

[0021] The method of generating a TIN triangulated network using the Delaunay triangulation algorithm includes:

[0022] (1) Geological cross-section: by determining the type, depth and layout of the geological cross-section, the cross-section is compiled and a 2 / 2.5-dimensional diagram of the cross-section layout and its reflection of the deep geological structure is drawn;

[0023] (2) Perform gravity and magnetic joint inversion on the 3D map based on the Delaunay triangulation algorithm, mainly by calculating the 2D section TIN triangulation network, determining the correspondence between 2D and 3D, and generating the 3D data point TIN triangulation network, including: using the digital elevation model data to grid the high lines, using the Surfer software to read them to form point objects, and using the Delaunay triangulation algorithm to generate the TIN triangulation network;

[0024] (3) Overlay remote sensing images and digital elevation model data of the same area and size in the form of pictures to achieve data visualization;

[0025] (4) Extract point data with the same attributes in the data structure to form stratigraphic point data, and generate a TIN triangulated network using the Delaunay triangulation algorithm.

[0026] The beneficial effects of the present invention are:

[0027] In view of the difficulty in effectively utilizing existing multidisciplinary data in three-dimensional modeling of weathered granite, the NoSQL database is used to integrate data and convert file formats, and the cross-block-layer modeling approach is used to improve the efficiency and authenticity of three-dimensional geological modeling in large areas of the mineralization belt. The mining range of rare earth deposits in weathered granite is delineated, a good regional environment is provided for the in-situ leaching of rare earth ores, and comprehensive resource utilization is achieved.

[0028] Carrying out three-dimensional modeling in weathered granite can more accurately predict the boundaries of underground mineral resources, formulate reliable treatment plans and technical measures, reduce construction costs, and provide data support for the formulation of reasonable geological disaster prevention measures and emergency plans, ensuring that the valuable metals in the ore body can be efficiently recovered and utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flow chart of the three-dimensional geological construction method of weathered layer granite rare earth ore described in the present invention.

[0030] Figure 2 Cross-section layout.

[0031] Figure 3 Flowchart of 3D geological profile generation.

[0032] Figure 4 A flow chart of modeling of a three-dimensional geological structure method for a weathered layer granite rare earth ore according to the present invention. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0034] Reference Figure 1 The three-dimensional geological structure method of the weathered layer granite rare earth ore of the present invention comprises the following steps:

[0035] (1) Acquire exploration data of multiple exploration holes, extract drilling data from the exploration data, and integrate them into modeling data based on geographic data, basic geological data, remote sensing data, geophysical data, physical / chemical analysis and test data of weathered granite, and mineral deposit drilling exploration data.

[0036] (2) Compile geological maps using modeling data and create three-dimensional geological maps based on two-dimensional geological plan map data.

[0037] (3) The main three-dimensional geological structure design profile of the rare earth mine is established through cross-block-layering to reveal the underground geological conditions of the profile domain; according to the characteristics of the surrounding area of ​​the rare earth mine, based on the geological database data, the cross-block-layering modeling idea is used to establish the geological profile modeling by block-layering, including the main profile, constraint profile and modeling profile, and the gravity-magnetic joint inversion is used to make the profile conform to the underground geological laws;

[0038] Screen the modules and conduct grid modeling by blocks, layers and regions, including rock mass and non-rock mass, and combine all rock mass and non-rock mass to build a module set;

[0039] Taking the building block as the unit, a cross-constraint section is established. Under the constraint of the constraint section, a modeling section parallel to the constraint section is established.

[0040] (4) Generating a stratigraphic entity through the stratigraphic profile, extracting stratigraphic data from the exploration data, using the stratigraphic data as project parameters of the stratigraphic entity, and generating a three-dimensional geological model through the stratigraphic entity.

[0041] Using the above basic data, a three-dimensional geological basic NoSQL database is established, including point, line, and surface databases, and a three-dimensional ore body geological model is established through the MongoDB non-relational database.

[0042] like Figure 1 As shown, obtain the original data, including:

[0043] Geographic data is used to construct three-dimensional surface models.

[0044] Geographic information base data is used to achieve the accuracy of geological interface extension at depth.

[0045] Remote sensing data mainly beautifies the surface of regional geological data.

[0046] Geophysical data is used to analyze subsurface geological information.

[0047] Rock physics / chemistry and testing data provide the raw information for providing true subsurface geological data.

[0048] The mineral deposit drilling exploration data provides reliable underground detection data for establishing three-dimensional geological models.

[0049] like Figure 2-3 As shown, the geological cross section includes:

[0050] The original data is used to create three-dimensional profile data and perform format conversion between them and GM-SYS.

[0051] The point, line, and surface geometric data and their attribute data composed of the three-dimensional geological model database are established using MongoDB in the NoSQL database.

[0052] like Figure 4 As shown, the regional three-dimensional geological model includes:

[0053] The rock mass is screened as a rock mass building block, and the non-rock mass area is divided into blocks using a fixed grid to obtain a number of grid building blocks.

[0054] All rock mass building blocks and grid building blocks are combined to form a modeling fast set.

[0055] Establish cross-constraint sections based on building blocks. Under the constraints of the constraint sections, establish modeling sections parallel to the constraint sections, including trunk sections, constraint sections, and modeling sections.

[0056] After the modeling section is verified by gravity and magnetic inversion, the two-dimensional data of the section is converted into three-dimensional data, and then the three-dimensional geological model of the current modeling module is established using the Delaunay triangulation algorithm.

[0057] Model validation is performed based on reliable data such as drilling.

Claims

1. A three-dimensional geological structure method for weathered granite rare earth ore, including three-dimensional visualization imaging of geological exploration of various metal mines, characterized in that: The specific steps are as follows: (1) acquiring exploration data of a plurality of exploration holes, extracting drilling data from the exploration data, and integrating the drilling data into modeling data; (2) Compile geological maps using modeling data and create three-dimensional geological maps based on two-dimensional geological plane map data; (3) Establish a three-dimensional geological structure design profile of rare earth mines through cross-blocking and layering to reveal the underground geological conditions of the profile area; The three-dimensional geological structure design profile of the rare earth mine is established by cross-blocking and layering to reveal the underground geological conditions of the profile area, including: According to the characteristics of the area around the rare earth mine, based on the geological database data, the geological profile modeling is established by block-layering through the cross-block-layer modeling idea, including the main profile, constraint profile and modeling profile, and the gravity-magnetic joint inversion is used to make the profile conform to the underground geological laws; Screen the modules and conduct grid modeling by blocks, layers and regions, including rock mass and non-rock mass, and combine all rock mass and non-rock mass to build a module set; Taking the building block as the unit, establish the cross-constraint section, and under the constraint of the constraint section, establish the modeling section parallel to the constraint section; (4) Generating a stratigraphic entity through the geological profile, extracting stratigraphic data from the exploration data, using the stratigraphic data as project parameters of the stratigraphic entity, and generating a three-dimensional geological model through the stratigraphic entity.

2. The three-dimensional geological construction method of weathered layer granite rare earth ore according to claim 1, characterized in that: The method of acquiring a plurality of exploration hole data and extracting drilling hole data from the exploration data comprises: Organize relevant data, including geographic data, basic geological data, remote sensing data, geophysical data, physical / chemical analysis and testing data of weathered granite, and mineral deposit drilling exploration data; Using the above basic data and NoSQL database, a three-dimensional geological basic database is established, including point, line and surface databases. Through the MongoDB non-relational database, a three-dimensional ore body geological model is established.

3. The three-dimensional geological construction method of weathered layer granite rare earth ore according to claim 1, characterized in that: The step (4) of generating a three-dimensional geological model through the stratum entity includes: (1) Surface model construction: digital elevation model data acquisition and remote sensing image overlay; (2) Establish a three-dimensional geological model.

4. The three-dimensional geological construction method of weathered layer granite rare earth ore according to claim 1, characterized in that: The three-dimensional geological model is generated by using the underground geological body model, including: using the Delaunay triangulation algorithm to generate a TIN triangulation network to form an underground geological model.

5. The three-dimensional geological construction method of weathered layer granite rare earth ore according to claim 4, characterized in that: The method of generating a TIN triangulated network using a Delaunay triangulation algorithm to form an underground geological model includes: (1) Geological cross-section: by determining the type, depth and layout of the geological cross-section, the cross-section is compiled and a 2 / 2.5-dimensional diagram of the cross-section layout and its reflection of the deep geological structure is drawn; (2) Perform gravity and magnetic joint inversion on the 3D map based on the Delaunay triangulation algorithm, determine the correspondence between 2D and 3D by calculating the 2D profile TIN triangulation network, and generate a 3D data point TIN triangulation network, including: using digital elevation model data to grid the high lines, using Surfer software to read them to form point objects, and using the Delaunay triangulation algorithm to generate the TIN triangulation network; (3) Overlay remote sensing images and digital elevation model data of the same area and size in the form of pictures to achieve data visualization; (4) Extract point data with the same attributes in the data structure to form stratigraphic point data, and generate a TIN triangulated network using the Delaunay triangulation algorithm.

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