CN114325828A - Sandstone-type uranium ore digital geological map compiling method - Google Patents
Sandstone-type uranium ore digital geological map compiling method Download PDFInfo
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Abstract
The invention belongs to the technical field of uranium ore geological foundation research, and particularly relates to a sandstone-type uranium ore digital geological map compiling method, which comprises the following steps: step 1, collecting, arranging and analyzing geological data; step 2, researching regional geological background and typical ore deposit; step 3, importing data and editing geological special subjects of the uranium ores; step 4, checking the content and quality of the picture; step 5, constructing a database; and 6, compiling the specification and the application of the picture result. By collecting and sorting geological data, comprehensively researching typical ore deposits, identifying and extracting uranium mineralization geological information, compiling map pieces and constructing a database, the invention can efficiently and quickly compile a sandstone-type uranium deposit geological map which can comprehensively reflect the latest results of uranium deposit geological exploration and scientific research in a certain area and further guide the practicability of the uranium deposit geological exploration.
Description
Technical Field
The invention belongs to the technical field of uranium ore geological foundation research, and particularly relates to a sandstone-type uranium ore digital geological map compilation method.
Background
With the rapid development of geological career in China, the compilation and application of geological maps are also changed remarkably, and the traditional paper compilation is gradually changed into digital mapping. The compilation and the application of the uranium ore digital geological map are very important for uranium ore geological exploration and uranium ore geological scientific research, the uranium ore geological map can reflect the latest results of the uranium ore geological exploration and research in a certain time period or a certain area, the latest scientific level of the uranium ore geological development is reflected, and the uranium ore digital geological map is a basic map for understanding and analyzing regional geological backgrounds, geological environments, regional uranium mineralization geological conditions and regional uranium mineralization relations.
In the process of uranium mine geological exploration and research, how to quickly compile a detailed and clear uranium mine geological map is very important to exploration and research results. However, it is not easy to quickly compile a uranium ore geological map in the actual working process, and a large amount of manpower, material resources and financial resources are consumed. The method comprises the steps of firstly solving the problems of richness, accuracy and reliability of data mastering, secondly solving the problems of data format and quality, thirdly solving the problem of clearly expressing uranium ore geological information in detail, and lastly solving the problems of database construction and map sharing application.
Therefore, a sandstone-type uranium ore digital geological map compiling method is urgently needed to be developed.
Disclosure of Invention
The invention aims to provide a sandstone-type uranium ore digital geological map compilation method, which is used for efficiently and quickly compiling a sandstone-type uranium ore geological map which can comprehensively reflect the latest results of uranium ore geological exploration and scientific research in a certain area and further guide the practicability of the uranium ore geological exploration by collecting and arranging geological data, comprehensively researching typical ore beds, recognizing and extracting uranium mineralization geological information, compiling map pieces and constructing a database.
The technical scheme for realizing the purpose of the invention is as follows:
a sandstone-type uranium deposit digital geological map compilation method specifically comprises the following steps:
step 1, collecting, arranging and analyzing geological data;
step 2, researching regional geological background and typical ore deposit;
step 3, importing data and editing geological special subjects of the uranium ores;
step 4, checking the content and quality of the picture;
step 5, constructing a database;
and 6, compiling the specification and the application of the picture result.
The step 1 comprises the following steps:
step 1.1, the system collects data such as geological reports, documents, geological maps, databases and the like in a mapping range;
and step 1.2, sorting and comprehensively analyzing data.
The step 1.1 specifically comprises the following steps: comprehensively collecting and sorting the geological data in the range of drawing, merging and comprehensively sorting the collected data according to types.
The geological data in the step 1.1 comprises: uranium mine geology, basic geology, geophysical, geochemistry, remote sensing, hydrogeology, prospecting engineering, mineral material data, ground leaching parameter and other data.
The step 1.2 is specifically as follows: finding out the source and reliability of the data, combing the accuracy of the data, the conformity of the content of the data and the current situation of investigation and research, and the data distribution in the range of drawing, and then classifying, checking, integrating and merging the data.
The step 2 comprises the following steps:
step 2.1, researching the geological background of regional uranium mineralization;
step 2.2, typical deposit study.
The step 2.1 is specifically as follows: and analyzing the relation between the geological structure, the stratum sedimentary building and the uranium ore in the stratum in time, space and material composition with the earth structure environment and the like in the mapping area, and discussing the control effect on uranium mineralization, such as a basin structure system, an ancient geographical environment, sedimentary building and deposition.
The step 2.2 specifically comprises the following steps: carrying out uranium mineralization geological condition research, and analyzing uranium source conditions, constructional conditions, lithology-lithofacies conditions of an ore exploration target layer, paleoclimate conditions, hydrogeological conditions and metaplasia conditions; developing the research of the geological characteristics of the ore deposit, and analyzing the three-dimensional spatial distribution characteristics of the ore deposit, the material composition of the ore deposit, the geochemical characteristics of the ore deposit, the geological action of the ore deposit, the geological age and the geological evolution stage; determining a mapping target layer, distinguishing a basin foundation structure and a cover layer structure, and determining ore control factors of uranium mineralization through computer recognizable structure, construction and post-production transformation.
The step 3 comprises the following steps:
step 3.1, unifying data formats and carrying out geological standardization on uranium ores;
step 3.2, editing geological special subjects of uranium ores;
and 3.3, drawing compiling.
The step 3.1 is specifically as follows: the method is characterized in that MapGIS is used as a standard data format, collected and sorted ArcGIS, CAD, MapInfo, GeoMap, spreadsheet and other data are converted into MapGIS data through a public exchange format, and standard frame registration, correction and projection transformation are carried out on the converted data, so that data with different precisions and different scales can be converted in a unified space range for drawing.
The step 3.2 is specifically as follows: simplifying a merging stratum, highlighting information of an ore-bearing target layer, thinning the ore-bearing target layer into groups, groups or sections as units, and respectively marking the groups or sections with corresponding codes; the mining structure pattern layer is divided into a fracture structure and a fold structure, and the fracture structure and the fold structure are formed by projecting the deposition diagenetic rock of the mining target layer in the basin; basal rock mass, body rich in uranium (layer) protruding from etched basin region (usually with uranium content greater than 10 x 10)-6) The spatial distribution characteristic of (a); the mineral map layer needs to merge uranium mineralization types, and overlaps the oil gas field and coal field and other mineral information map layers, highlights the spatial distribution relation of uranium mineralization information and other mineral information, and is marked by corresponding sub-map codes; and after the special layer is highlighted and merged, editing the point, line and surface files in the vectorization layer one by one.
The sandstone-type uranium ore geological map surface content in the step 3.3 comprises the following steps: planar geological maps, geological profiles, stratigraphic columns, angle maps, legends, linear scales, picture names, and liability tables.
The step 4 specifically comprises the following steps: checking whether the projection parameters of all layers in the drawing are consistent with the engineering projection parameters and meeting the requirements of the space parameters of the drawing; the registration and error correction of the graph and whether the projection parameters are correct; whether the merging and the division of the special image layers of the uranium ores are reasonable or not and whether missing items or redundant items exist or not; whether the picture content conforms to reality; checking the topological relation between the surface file and the line file; checking the accuracy of the classification and the spatial distribution of uranium mineralization and other mineral information types; whether the drawing surface finishing meets the uranium mine geological mapping specification requirements.
The step 5 comprises the following steps:
step 5.1, establishing a database structure;
and 5.2, inputting the attribute data and checking the database.
The step 5.1 specifically comprises the following steps: and respectively establishing data attribute structures aiming at different image layers in the image to ensure the complete storage of the information data.
The step 5.2 is specifically as follows: after the attribute data structure of each layer is established, corresponding attribute contents are respectively input according to the requirements of different attribute fields, and database quality inspection is carried out after all data attributes are input, so that the data stored in the database are ensured to be accurate.
The attribute entry in the step 5.2 comprises manual entry and batch attribute or parameter hooking entry, and the batch entry attribute can be entered by means of a Section plug-in.
The database quality check in step 5.2 comprises: integrity, logistics, accuracy and spatial localization of data.
The step 6 specifically comprises the following steps: drawing a drawing specification according to drawing requirements of a drawing-library-specification, so that various users can share and use the drawing conveniently; the editing content mainly comprises an editing range, a main working process, drawing content, completion workload and editing quality, editing data and sources, an editing principle and basis problem existence and disposal conditions; the digital map and the database can be synchronously released, shared and used.
The invention has the beneficial technical effects that:
1. the invention is to organically combine uranium ore geological knowledge, geological rules, sandstone-type uranium ore mapping technology, mapping thinking and geological data recognizable by a computer by utilizing a comprehensive technology of 'GIS technology, computer technology and uranium ore geological professional knowledge', identify, extract and merge geological elements related to uranium ore formation in mass data, data with different scales and different formats (vector data, form data and grid data) or paper data of different departments (petroleum geology, uranium ore geology, coal field geology and the like), and rapidly and efficiently map out a uranium ore geological map which has detailed and clear contents and can guide uranium ore geological exploration. The method can be further popularized to compiling of other series of basic diagrams and achievement diagrams required by uranium mine geological exploration and research.
2. The invention introduces specific steps of a sandstone-type uranium ore digital geological map compilation technical method, and has strong operability
3. On the basis of regional uranium mineralization geological background research and typical deposit research, the method can be used for determining the project, content and notice of sandstone-type uranium ore geological special editing, and the map content can highlight the particularity of the uranium ore geology
4. On the basis of the sandstone-type uranium deposit data attribute structure and the database construction, the method is convenient for storing, storing and converting the sandstone-type uranium deposit mineralization elements, and is convenient for predicting the uranium deposit prospect and guiding the uranium deposit geological exploration in the later period.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention provides a method for compiling a sandstone-type uranium ore digital geological map, which specifically comprises the following steps:
step 1, geological data collection, arrangement and analysis
Step 1.1 the System collects data from geological reports, literature, geological maps and databases within the scope of charting
The method is characterized in that data of uranium ore geology, basic geology, geophysical, geochemistry, remote sensing, hydrogeology, prospecting engineering, mineral products and the like in the mapping range are comprehensively collected and organized, and data of ground leaching parameters are collected in the region of ground leaching sandstone type uranium ore or ground leaching uranium mine. The uranium ore geological data are collected by focusing on uranium ore geological exploration data, uranium ore regional evaluation data, uranium ore geological logs, radioactive measurement data, regional uranium mineralization rule data, uranium ore resource survey evaluation results, a uranium ore geological working degree database, a uranium ore production place database and the like. And merging and comprehensively sorting the collected data according to types.
Step 1.2 arrangement and comprehensive analysis of data
The collected data is processed by systematic arrangement, analysis and digestion and absorption. Firstly, the source and reliability of the data are found out, secondly, the accuracy of the data, the content of the data, the conformity degree of the investigation and the research status and the data distribution condition in the mapping range are combed, and then the data are classified, corrected, integrated and merged.
Step 2, regional geological background research and typical deposit research
Step 2.1, regional uranium mineralization geological background research
And analyzing the relation between geological structures, stratum sedimentary formations and uranium ores in the stratums in time, space, material composition, geotectonic environment and the like in the mapping region, and discussing the control effect on uranium mineralization, such as a basin construction system, an ancient geographical environment, sedimentary formations and sediments.
Step 2.2, typical deposit study
Carrying out research on geological conditions of uranium mineralization, and analyzing uranium source conditions (uranium-containing property in the sedimentary construction of basement rocks and basin cover layers), constructional conditions, lithology-lithofacies conditions of an ore-finding target layer, paleoclimatic conditions, hydrogeological conditions and metaplasia conditions; developing the research of the geological characteristics of the ore deposit, and analyzing the three-dimensional spatial distribution characteristics of the ore deposit, the material composition of the ore deposit, the geochemical characteristics of the ore deposit, the geological action of the ore deposit, the geological age and the geological evolution stage; determining a mapping target layer, distinguishing a basin foundation structure and a cover layer structure, and determining ore control factors of uranium mineralization through computer recognizable structure, construction and post-production transformation.
Step 3, importing data and editing geological topic of uranium ore
Step 3.1, unifying data formats and carrying out geological standardization on uranium ores
Data formats are required to be unified and standardized. The method takes the MapGIS as a standard data format, converts collected and sorted ArcGIS, CAD, MapInfo, GeoMap, spreadsheet and other data into the MapGIS data through a public exchange format, and performs standard frame registration, correction and projection transformation on the converted data to ensure that the data with different precisions and different scales can be converted in a unified space range of drawing. Wherein, the paper picture is scanned, embedded, registered, corrected, vectorized and edited, and the projection parameters and the coordinate system of the data are set to be consistent with the picture.
Step 3.2, editing uranium ore geology special topic
And (3) according to the research result in the step 2, editing and merging the basin foundation rock mass, the uranium mineralization structure, the stratum, the uranium mineralization information, other mineral information and the like, and comprehensively compiling the digital sandstone-type uranium ore geological map. Simplifying a merging stratum, highlighting information of an ore-bearing target layer, thinning the ore-bearing target layer into groups, groups or sections as units, and respectively marking the groups or sections with corresponding codes; merging Taiguyu and Yuanguyu into a layer, and respectively representing by Ar and Pt; simplifying and merging the ancient field direct substrate into a unit, and marking the unit by using a code of a corresponding era; the new growing boundaries in the Chinese are refined to be in the unit of group (group). The mining structure pattern layer comprises a fracture layer and a fold layer, wherein the fracture layer comprises an erosion source area fracture layer and a basin internal fracture layer, the fold layer is mainly a fold in the basin, and the fracture and fold structure is formed by projecting a mining target layer in the basin to deposit a diagenetic rock; basal rock mass, uranium (layer) rich body (usually with uranium content greater than 10 x 10) required to protrude from the basin erosion source zone-6) The spatial distribution characteristic of (a); and the mineral map layer needs to merge uranium mineralization types (referring to a partition scheme of the uranium mineralization types in the uranium mineral log), and overlaps the oil gas field, the coal field and other mineral information map layers, highlights the spatial distribution relation of the uranium mineralization information and other mineral information, and is marked by corresponding sub-map codes. After the special layer is highlighted and merged, editing point (. wt), line (. wl) and face (. wp) files in the vectorization layer one by one is started.
Step 3.3, drawing compilation
The map surface content of the sandstone-type uranium ore geological map mainly comprises 8 parts, namely a plane geological map, a geological profile map, a stratum comprehensive histogram, an angle map, a legend, a linear scale, a map name, a responsibility table and the like, and in the editing and compiling process of each part, the contents of colors, pattern symbols, line shapes, legends and the like for marking lithology-facies are developed according to the requirements of regional geological map legend (GB/T958) and geostouchscreen sandstone-type uranium ore geological map compilation regulation (EJ/T20003), and a uranium ore geological map meeting the standard requirements is compiled.
Step 4, checking the content and quality of the picture
And (4) carrying out quality inspection work on the sandstone type uranium ore geological map compiled in the step 3.3. The checked content mainly comprises whether the projection parameters of all layers in the drawing are consistent with the engineering projection parameters and meets the requirements of the space parameters of the drawing; the registration and error correction of the graph and whether the projection parameters are correct; whether the merging and the division of the special image layers of the uranium ores are reasonable or not and whether missing items or redundant items exist or not; whether the picture content conforms to reality; checking the topological relation between the surface file and the line file; checking the accuracy of the classification and the spatial distribution of uranium mineralization and other mineral information types; whether the drawing surface finishing meets the uranium mine geological mapping specification requirements.
Step 5, database construction
Step 5.1, database Structure establishment
And respectively establishing data attribute structures aiming at different image layers in the image, wherein the structure type is mainly established by referring to a national uranium mine resource potential evaluation data model, and the information data is completely stored.
Step 5.2, attribute data entry and database check
After the attribute data structure of each layer is established, corresponding attribute contents are respectively input according to the requirements of different attribute fields. The attribute input can be divided into manual input and batch attribute or parameter hooking input. Attributes can be entered in bulk via the Section plug-in, but provided that each attribute ID is unique. And after all the data attributes are recorded, carrying out database quality inspection, mainly inspecting the contents of data such as integrity, logicality, accuracy, spatial orientation and the like, and ensuring that the data stored in the database is accurate.
Step 6, compiling the instruction and the application of the picture result
Drawing specifications are compiled according to drawing requirements of drawing-library-description, and various users can share and use the drawings conveniently. The editing content mainly includes the editing range, the main working process, the drawing content, the completion workload and the editing quality, the editing data and source, the editing principle and basis, the problem and the disposal condition, etc. And finally, the digital drawing and the database can be synchronously released, shared and used.
Examples
Taking a sandstone-type uranium ore digital geological map of the bartoney gobi basin as an example, the method for compiling the sandstone-type uranium ore digital geological map provided by the invention specifically comprises the following steps:
step 1, geological data collection, arrangement and analysis.
Step 1.1, the system collects data such as Bartonegolgi basin reports, literature, geological maps, databases, and the like.
And comprehensively collecting data such as uranium ore geology, basic geology, hydrogeology, prospecting engineering, mineral products and the like in the Bayin gobi basin. And data such as uranium ore geological exploration, radioactive measurement, regional uranium mineralization law, uranium ore resource survey and evaluation results, a uranium ore production place database and the like are collected in an important way since 2000. And merging and comprehensively sorting the collected data according to types.
And step 1.2, sorting and comprehensively analyzing data.
Aiming at various collected data, systematic arrangement, analysis, digestion and absorption are carried out. The accuracy and the content of the combing data are in accordance with the current investigation and research situation, the source and the reliability of various geological data are ensured, and the data are classified, corrected, integrated and merged according to the data distribution situation in the basin range.
And 2, researching the regional geological background and typical ore deposit.
And 2.1, researching the geological background of the regional uranium mineralization.
The relation of geologic structures of the Bartonegobi basin and the surrounding areas, stratum sedimentary formations and uranium ores in the stratum on the aspects of time, space, material components, geotectonic environment and the like is analyzed, and the control effect of the system, the ancient geographic environment, the sedimentary formations and the sediments and the like on uranium mineralization is discussed.
Step 2.2, typical deposit study.
The method comprises the steps of taking a temple and tagin as typical uranium ore deposits, respectively developing uranium mineralization geological condition research and uranium mineralization geological feature research, and determining that a chalky baryoge group is adopted as a drawing target layer, a chalky baryoge group is adopted as a sub-phase sand-mud interbedded construction ore control action, a diving oxidation action and an interlaminar oxidation action are main uranium mineralization actions due to the depression of a grid well and the northeast fracture in a basin.
And 3, importing data and editing geological subjects of the uranium ores.
And 3.1, unifying data formats and carrying out geological standardization on the uranium ores.
Setting the mapping range, the coordinate system and the projection parameters of the Bartonegobi basin. And (3) converting the geological data in various formats and various types collected and sorted in the step (1) into MapGIS data (the paper picture needs to be scanned, inlaid, registered, corrected and vectorized for editing) through a public exchange format. And the converted data is subjected to registration, correction and projection conversion, so that the data with different precisions and different scalars can be projected and converted to corresponding accurate spatial positions in the Bartonegobi basin.
And 3.2, editing geological subjects of the uranium ores.
And (5) according to the research result of the step 2, carrying out prominent editing on the uranium mine geological album. Simplifying the merging strata and highlighting the underling chalk gavel (K)1b) The lower chalk system and the upper chalk system are respectively marked by corresponding codes; merging Yuanguyu into a layer, wherein Pt represents the Yuanguyu; simplifying and merging the ancient field direct substrate into a unit, and marking the unit by using a code of a corresponding era; the new growing boundaries in the Chinese are refined to be in the unit of group (group). A mineralizing structure map layer which highlights northeast fractures formed by the basin basement uplifting and depression zone structure partitions and the bartonegolay component sedimentary diagenesis; the acid granite and volcanic rock (the content of uranium is more than 10 multiplied by 10) in the enriched uranium around the basin are highlighted-6) The spatial distribution characteristic of (a); 2 submerged oxidation zone type uranium deposit and a plurality of uranium deposit points and abnormal points are developed in the basin, industrial uranium deposit holes, mineralized holes, abnormal holes and ore-free holes are further distinguished according to standards, an ore production map layer is established, and the distribution relation of uranium mineralization information with uranium-rich rock mass and ore control fracture space in the basin is highlighted. After the geological topic is highlighted and merged, editing point (.wt), line (.wl) and face (.wp) files in the vectorization layer one by one.
And 3.3, drawing compiling.
According to the national uranium mine resource potential evaluation technology, 8 parts of a regional geological map legend (GB/T958) and an earth leaching sandstone type uranium mine geological map element compiling regulation (EJ/T20003) are respectively compiled into a Baryin Goniobi basin plane geological map, a geological profile map, a stratum comprehensive histogram, an angle map, a legend, a scale, a map name, a responsibility table and the like.
And 4, checking the content and quality of the picture.
And (4) performing quality inspection on the uranium ore geological map of the Bayin Gobi basin sandstone type compiled in the step 3.3. The checked content mainly comprises whether the projection parameters of the drawing are consistent with the project parameters; the registration and error correction of the graph and whether the projection parameters are correct; whether the merging and the division of the special image layers of the uranium ores are reasonable or not and whether missing items or redundant items exist or not; whether the picture content conforms to reality; checking the topological relation between the surface file and the line file; the accuracy of the partition and the spatial distribution of uranium mineralization and other mineral information types is checked; whether the drawing surface finishing meets the uranium mine geological mapping specification requirements.
And 5, constructing a database.
And 5.1, establishing a database structure.
And respectively establishing data attribute structures aiming at different image layers in the image, wherein the structure type is mainly established by referring to a national uranium mine resource potential evaluation data model, and the information data is completely stored.
And 5.2, inputting the attribute data and checking the database.
After the attribute data structure of each layer is established, corresponding attribute contents are respectively input according to the requirements of different attribute fields. And after all the data attributes are recorded, carrying out database quality inspection, mainly inspecting the contents of data such as integrity, logicality, accuracy, spatial orientation and the like, and ensuring that the data stored in the database is accurate.
And 6, compiling the specification and the application of the picture result.
Drawing a description book of the uranium mine geologic map of the sandstone type of the Bartonegobi basin is drawn according to drawing requirements of a drawing library and a description, so that various users can share and use the drawings conveniently. The contents of the specification include the range of drawing, the main working process, the contents of drawing, the completion workload and the quality of drawing, the data and source of drawing, the principles of drawing and the basis of problems and disposal conditions. And finally, the digital drawing and the database can be synchronously released, shared and used.
The present invention is described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and for example, on the basis of typical deposit and mining law research, a series of basic maps and result maps, such as a sandstone-type uranium ore construction map, a lithofacies paleogeography, a rock geochemistry map, a mining element map, a prediction element map, and a prediction result map, may be further compiled. Variations can be made within the knowledge of those skilled in the art without departing from the spirit of the invention. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (19)
1. A sandstone-type uranium deposit digital geological map compilation method is characterized by specifically comprising the following steps:
step 1, collecting, arranging and analyzing geological data;
step 2, researching regional geological background and typical ore deposit;
step 3, importing data and editing geological special subjects of the uranium ores;
step 4, checking the content and quality of the picture;
step 5, constructing a database;
and 6, compiling the specification and the application of the picture result.
2. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 1, wherein the step 1 comprises:
step 1.1, the system collects data such as geological reports, documents, geological maps, databases and the like in a mapping range;
and step 1.2, sorting and comprehensively analyzing data.
3. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 2, wherein the step 1.1 is specifically as follows: comprehensively collecting and sorting the geological data in the range of drawing, merging and comprehensively sorting the collected data according to types.
4. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 3, wherein the geological data in the step 1.1 comprises: uranium mine geology, basic geology, geophysical, geochemistry, remote sensing, hydrogeology, prospecting engineering, mineral material data, ground leaching parameter and other data.
5. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 2, wherein the step 1.2 is specifically as follows: finding out the source and reliability of the data, combing the accuracy of the data, the conformity of the content of the data and the current situation of investigation and research, and the data distribution in the range of drawing, and then classifying, checking, integrating and merging the data.
6. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 1, wherein the step 2 comprises:
step 2.1, researching the geological background of regional uranium mineralization;
step 2.2, typical deposit study.
7. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 6, wherein the step 2.1 is specifically as follows: and analyzing the relation between the geological structure, the stratum sedimentary building and the uranium ore in the stratum in time, space and material composition with the earth structure environment and the like in the mapping area, and discussing the control effect on uranium mineralization, such as a basin structure system, an ancient geographical environment, sedimentary building and deposition.
8. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 6, wherein the step 2.2 is specifically as follows: carrying out uranium mineralization geological condition research, and analyzing uranium source conditions, constructional conditions, lithology-lithofacies conditions of an ore exploration target layer, paleoclimate conditions, hydrogeological conditions and metaplasia conditions; developing the research of the geological characteristics of the ore deposit, and analyzing the three-dimensional spatial distribution characteristics of the ore deposit, the material composition of the ore deposit, the geochemical characteristics of the ore deposit, the geological action of the ore deposit, the geological age and the geological evolution stage; determining a mapping target layer, distinguishing a basin foundation structure and a cover layer structure, and determining ore control factors of uranium mineralization through computer recognizable structure, construction and post-production transformation.
9. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 1, wherein the step 3 comprises:
step 3.1, unifying data formats and carrying out geological standardization on uranium ores;
step 3.2, editing geological special subjects of uranium ores;
and 3.3, drawing compiling.
10. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 9, wherein the step 3.1 is specifically: the method is characterized in that MapGIS is used as a standard data format, collected and sorted ArcGIS, CAD, MapInfo, GeoMap, spreadsheet and other data are converted into MapGIS data through a public exchange format, and standard frame registration, correction and projection transformation are carried out on the converted data, so that data with different precisions and different scales can be converted in a unified space range for drawing.
11. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 9, wherein the step 3.2 is specifically as follows: simplifying a merging stratum, highlighting information of an ore-bearing target layer, thinning the ore-bearing target layer into groups, groups or sections as units, and respectively marking the groups or sections with corresponding codes; the mining structure pattern layer is divided into a fracture structure and a fold structure, and the fracture structure and the fold structure are formed by projecting the deposition diagenetic rock of the mining target layer in the basin; basal rock mass, body rich in uranium (layer) protruding from etched basin region (usually with uranium content greater than 10 x 10)-6) The spatial distribution characteristic of (a); the mineral map layer needs to merge uranium mineralization types, and is overlapped with the oil gas field and coal field and other mineral information map layers to highlight the spatial distribution relation of uranium mineralization information and other mineral informationThe corresponding sub-figure code is marked; and after the special layer is highlighted and merged, editing the point, line and surface files in the vectorization layer one by one.
12. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 9, wherein the mapping contents of the sandstone-type uranium deposit in the step 3.3 comprise: planar geological maps, geological profiles, stratigraphic columns, angle maps, legends, linear scales, picture names, and liability tables.
13. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 1, wherein the step 4 specifically comprises: checking whether the projection parameters of all layers in the drawing are consistent with the engineering projection parameters and meeting the requirements of the space parameters of the drawing; the registration and error correction of the graph and whether the projection parameters are correct; whether the merging and the division of the special image layers of the uranium ores are reasonable or not and whether missing items or redundant items exist or not; whether the picture content conforms to reality; checking the topological relation between the surface file and the line file; checking the accuracy of the classification and the spatial distribution of uranium mineralization and other mineral information types; whether the drawing surface finishing meets the uranium mine geological mapping specification requirements.
14. The method for compiling the digital geological map of the sandstone-type uranium deposit according to claim 1, wherein the step 5 comprises:
step 5.1, establishing a database structure;
and 5.2, inputting the attribute data and checking the database.
15. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 14, wherein the step 5.1 is specifically: and respectively establishing data attribute structures aiming at different image layers in the image to ensure the complete storage of the information data.
16. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 14, wherein the step 5.2 is specifically: after the attribute data structure of each layer is established, corresponding attribute contents are respectively input according to the requirements of different attribute fields, and database quality inspection is carried out after all data attributes are input, so that the data stored in the database are ensured to be accurate.
17. The method for compiling a sandstone-type uranium deposit digital geological map according to claim 16, wherein the logging of the attributes in the step 5.2 is divided into manual logging and batch attribute or parameter hooking logging, and the batch logging of the attributes can be performed by means of a Section plug-in.
18. The method for compiling a digital geological map of a sandstone-type uranium deposit according to claim 16, wherein the database quality check in the step 5.2 comprises: integrity, logistics, accuracy and spatial localization of data.
19. The method for compiling the sandstone-type uranium deposit digital geological map according to claim 1, wherein the step 6 specifically comprises: drawing a drawing specification according to drawing requirements of a drawing-library-specification, so that various users can share and use the drawing conveniently; the editing content mainly comprises an editing range, a main working process, drawing content, completion workload and editing quality, editing data and sources, an editing principle and basis problem existence and disposal conditions; the digital map and the database can be synchronously released, shared and used.
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| CN117251739B (en) * | 2023-11-17 | 2024-01-30 | 核工业北京地质研究院 | Construction method of sample set for sandstone uranium resource quantitative prediction |
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