CN116797755B - Modeling method for multi-time-space three-dimensional geological structure of mixed rock zone - Google Patents
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Abstract
The application belongs to the technical field of geological modeling, and particularly relates to a multi-time-space three-dimensional geological structure modeling method for a structural hybrid rock zone. According to the method, multi-source geological data are collected and tidied, preprocessing is carried out, key data are extracted for modeling, and the modeling comprises fault network modeling, stratum construction, boundary line extraction of geological bodies such as rock bodies, enveloping surface/interface construction of geological bodies such as rock bodies and Boolean operation, so that a complex structure mixed rock zone geological model is finally formed. The system realizes efficient and accurate three-dimensional geological structure modeling through automatic and manual interaction. The method provided by the application provides high-precision geological structure modeling, and can accurately simulate the geological characteristics and complexity of the mixed rock zone. The method considers the diversity and complexity of the mixed rock zone, and provides comprehensive geological information by comprehensively utilizing the multi-source data, so that the method has wide application value in the fields of geological research, resource exploration and the like of the structural mixed rock zone.
Description
Technical Field
The application belongs to the technical field of geological modeling, and particularly relates to a multi-time-space three-dimensional geological structure modeling method for a structural hybrid rock zone.
Background
The structural mixed rock band is a structural geological entity which is formed by stacking and splicing sea ditches, ocean sediments, basic-superbasic rock blocks of ocean islands and sea mountains and the like together through plate diving, has complex rock composition, different times and layers of structural superposition deformation, the development of permeable structural surfaces such as a ridge surface, a lamellar surface and the like, is closely accompanied with a weak deformation domain, is influenced by the action of structural hydrothermal solution, has strong rock alteration, and particularly has the alteration of snake green rock blocks as a soft rock large deformation matrix with the most harm. The structural mixed rock belt is a hotspot for developing global plate structural theory, is an experimental base for researching a mountain making action process and engineering geological environment, and is also a cutting port for understanding ordered or unordered structures of different geological units and restricting mechanical properties and bad geological body behaviors of different rock masses of great engineering.
The mixed rock refers to a geologic body formed by mixing and accumulating rock blocks with different compositions, times and sources, and is a special rock body which is deformed by the structure of the plate and can be filled and drawn on a geologic map, and is also called mixed accumulation. It is generally composed of three parts, a matrix, in situ rock mass, and foreign rock mass. Rock fragments vary in size, shape, contact each other in a structural relationship, and are subjected to shearing actions of different scales. Railway engineering crossing has the following four geological risk hidden dangers: (1) the rock composition is complex, the lithology layer and the structural surface change rapidly and greatly in the longitudinal direction and the transverse direction, and the prejudice before construction is low; (2) developing a large number of fracture and shear zones, causing rock fracture and risk of gushing water; (3) the structural hydrothermal solution has strong action, the rock alteration phenomenon is common, the engineering mechanical property is poor, basalt, gabbro, olive rock and the like generate serpentine, green mud petrochemical and slick petrochemical, and the silty rock generates carbonization and graphitization, so that the occupation ratio of bad geologic bodies such as expansive rock soil, extremely soft rock and the like is increased; (4) the active fracture zone is easy to activate, slip and dislocation are easy to occur, and engineering construction is endangered.
Therefore, it is necessary to provide a modeling method for a three-dimensional geological structure of a typical structure of multi-source geophysical-geological data such as "space-earth-well" based on engineering along-line drilling, large scale structure-lithology geological map and aviation heavy magnetism, magnetotelluric sounding, remote sensing images and the like, to build ordered or disordered fine space structures of different structures of mixed rocks of a Sichuan railway, finely describe the complex geological structure along the railway engineering line, the structural geometric form and structural relation of a bad geological body, the physical chemistry inside the geological body and other attribute change rules, realize the transparency of the geological structure of the important region of the structure of the mixed rocks, and serve the works such as engineering decision and disaster early warning in the complex difficult environment.
Disclosure of Invention
In view of the above, the application provides a modeling method for constructing a multi-time space three-dimensional geological structure of a hybrid rock zone, which utilizes data such as geophysical profile inversion interpretation results, a structure-lithology geological map and the like to build a fine deep and large fracture three-dimensional fault network system model comprising deep and large fractures, movable faults and the like; for the geologic structure of ordered geologic relation, introducing the criteria of geologic knowledge management and geologic modeling into the modeling flow, converting geologic elements into the constraint of geologic modeling, and realizing the three-dimensional geologic structure modeling of automatic and manual interaction; aiming at the complexity of complex and various in-band 'rock blocks' and 'matrixes' and the complexity of rapid spatial change, the mixed rock band disorder bad geologic body construction technology under the constraint of an ordered geologic structure (such as a fine fault network, a broken band boundary and the like) is researched.
The application is realized by adopting the following technical scheme:
a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone comprises the following steps:
step 1), collecting finishing data: collecting multi-source data of each mixed rock zone, and preprocessing according to a data format required by modeling;
step 2), modeling data extraction: extracting key data required by modeling from the preprocessed multi-source data, wherein the key data comprises different lithology boundary ranges, fault strike and occurrence information and stratum constraint data;
step 3), three-fault network modeling: constructing a fault plane and processing a main-auxiliary relationship and a boundary relationship of the fault plane according to the extracted fault trend and the occurrence information;
step 4), stratum construction: constructing a basal plane by taking multi-source data as constraint data according to the boundary of a work area and faults in the area; respectively extracting constraint data of different strata, and sequentially adding the constraint data to a model construction list according to the layering sequence of the strata; and constructing an integrated geologic body, and forming a bedrock geologic body after formation of all stratum is completed.
Step 5), extracting boundary lines of the hybrid rock mass: and extracting boundary contour lines of the mixed rock mass mixed in the mixed rock zone from the multi-source data, and completing the construction of a monomer model of the contour lines.
Step 6), constructing surrounding surfaces of the hybrid rock mass: and judging the shape and the shape of the invaded body by referring to the geological section, the fault and the trend and the shape of the stratum, and constructing a closed Tin surface by the extracted contour line of the invaded body.
Step 7), closing the hybrid rock mass: and closing the constructed Tin surface by a way of forming a closed surface body to form a final invaded body.
Step 8), boolean operation: obtaining a bedrock geologic body after deducting an invaded body by using Boolean operation, and obtaining the invaded body inlaid in the bedrock geologic body; and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
In step 1), the collected multisource data of each mixed rock zone comprises geological map, geological section, DEM elevation and satellite image data of each mixed rock zone area when data are collected, wherein the DEM elevation data and the satellite image data also generate data formats required by modeling through cutting and splicing processing, data format conversion and coordinate conversion.
As a further aspect of the present application, preprocessing is performed according to a data format required for modeling, including the steps of:
a) According to a unified naming scheme of the appointed stratum attribute, carrying out unified stratum division on the geological profile, and carrying out attribute assignment on the stratum to form a standardized geological profile;
b) Carrying out geological registration on the collected grid geological map, vectorizing the registered geological map, and drawing out the grid geological map in a vector line form on the geological map according to modeling elements for modeling;
c) Carrying out elevation point and contour line extraction and importing on the DEM elevation data;
d) Determining a modeling range of the mixed rock zone, and performing line encryption and cutting operation on the boundary;
e) And storing the processed multi-source data, and loading and using according to the flow sequence during modeling.
As a further scheme of the application, the method for extracting and importing elevation points and contour lines of the DEM elevation data comprises the following steps: the method comprises the steps of importing the elevation number of the DEM into modeling software, extracting vector data including elevation points and contour lines of the elevation data of the DEM by using a tool, and participating in the modeling process to control the ground surface.
As a further scheme of the application, the method for determining the modeling range of the mixed rock zone and performing line encryption and cutting operation on the boundary comprises the following steps:
and adjusting the modeling boundary according to the size of the modeling work area and the modeling precision, performing line encryption operation on the line with sparse boundary line nodes, performing line filtering operation on the line with dense boundary line nodes, and performing line cutting operation on the boundary line after the boundary line node density reaches a threshold value.
As a further aspect of the present application, in step 2), modeling data extraction includes the steps of:
extracting boundary ranges of different lithologies according to the registered and vectorized geological map, and performing encryption operation;
extracting trend lines and occurrence information of faults according to a geological map, and extracting trend lines of the faults according to a geological profile, wherein the trend lines, the trend lines and the occurrence information are combined to be used as supporting data for construction of the fault plane;
and extracting constraint data of different bedrock geologic bodies according to the geologic profile, and controlling the growth trend of the bedrock geologic bodies.
As a further aspect of the present application, in step 3), three-fault network modeling includes the steps of:
controlling the growth range of the fault by taking the fault trend line as a reference, judging the intersection relation between the fault and the boundary, and judging the main and auxiliary relation between the fault and the boundary;
constructing a fault plane conforming to a geological map and a geological section by using the extracted fault trend line and the occurrence information;
processing the main-auxiliary relationship and the boundary relationship of the constructed fault plane;
and performing fault detection, and if the fault detection does not pass, performing corresponding modification according to the error reporting prompt until fault data pass detection.
As a further aspect of the present application, in step 4), the formation construction includes the steps of:
taking the data of a geological map, a geological section, a DEM elevation and a satellite image in the multi-source data as constraint data, and constructing a basal plane according to the boundary of a work area and the faults in the area;
respectively extracting constraint data of different strata, and sequentially adding the constraint data to a model construction list according to the layering sequence of the strata;
constructing an integrated geologic body, wherein the pinch-out range of a model is confirmed, whether the constraint data have overlapping points and logic errors higher than a basal plane is checked, a Top plane is constructed after correction, the basal plane is taken as a Bottom plane, the intersection relation between the planes is processed, and the integral geologic body is closed;
and after all stratum are formed, forming bedrock geologic bodies.
As a further aspect of the present application, in step 8), a boolean operation includes the steps of:
b, using the A-B operation of Boolean operation to obtain a bedrock geologic body with the invaded body subtracted, and using the A-B operation to obtain the invaded body inlaid in the bedrock geologic body;
and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
As a further aspect of the present application, when an invaded body embedded in a bedrock geologic body is obtained, cross-extraction is performed independently from each bedrock geologic body with respect to the exposure and cross-fault conditions of a part of the invaded body.
The application also includes a computer device comprising a memory storing a computer program and a processor implementing the steps of constructing a method of modeling a multi-time-space three-dimensional geological structure of a hybrid rock zone when the computer program is executed.
The application also includes a storage medium storing a computer program which, when executed by a processor, performs the steps of constructing a method of modeling a multi-time-space three-dimensional geological structure of a hybrid rock zone.
Compared with the prior art, the modeling method for constructing the multi-time-space three-dimensional geological structure of the mixed rock zone has the following beneficial effects:
1. the modeling precision is improved: the method combines various data such as geophysical profile inversion interpretation results, structure-lithology geologic map and the like, and can more accurately simulate the geologic structure of the mixed rock zone through a fine deep and large fracture three-dimensional fault network system model. The method is favorable for improving the accuracy of geological modeling, reducing modeling errors and enabling the geological model to be more authentic and credible.
2. Realize automatic and manual interaction: according to the method, the guidelines of geological knowledge management and geological modeling are introduced, geological elements are converted into constraints of geological modeling, and three-dimensional geological structure modeling of automatic and manual interaction is achieved. Through manual participation and guidance, the modeling process can be guided and corrected by effectively utilizing professional geological knowledge, and the modeling accuracy and reliability are improved.
3. Consider complexity and diversity: the rock masses and matrices within the mixed rock zone have complex diversity and vary rapidly in space. According to the method, the mixed rock zone disorder bad geologic body construction technology under the constraint of the ordered geologic structure is researched, the change of complex lithology in the mixed rock zone can be effectively processed, the complex lithology in the mixed rock zone is incorporated into a modeling process, and the comprehensive expression capacity of a geologic model is improved.
4. And (3) comprehensively utilizing multi-source data: the method starts from available multi-source data, including geological map, geological section, DEM elevation, satellite image and the like, and comprehensively utilizes the data to model. Through data preprocessing, extraction and interpretation, the data is converted into a form required by modeling, and data support and basis are provided for constructing a real and accurate geological model.
5. Fine fault network and formation construction: the method focuses on modeling of faults and strata, and achieves constraint on the range and the morphology of the strata or the geologic body through construction of the fault plane and construction of a network structure of the stratum plane. Therefore, the geological structure of the mixed rock zone can be better simulated, and the relation between the stratum and the fault is more true and accurate.
6. Efficient modeling flow: the method provides a complete modeling flow, which comprises data collection and arrangement, data preprocessing, modeling data extraction, three-fault network modeling, stratum construction, boundary line extraction of geologic bodies such as rock mass, surrounding relation modeling of geologic bodies such as rock mass and the like. The process can efficiently convert various data into a format required by modeling, and the overall modeling of the geological structure is realized through the organic linking of each step.
7. Three-dimensional visualization and interaction analysis: the method can display the established multi-time-space three-dimensional geological structure model in a visual mode. Through visualization of the three-dimensional model, a user can intuitively observe and analyze the geological structure characteristics of the mixed rock zone, and can further understand details of the geological model. Meanwhile, the user can interact with the model to analyze and modify the geological structure so as to meet different research and application requirements.
8. Geological resource evaluation and risk prediction: by establishing a real and accurate geological structure model, the method can provide a reliable basis for evaluating geological resources and predicting risks of the mixed rock zone. The geological model can provide support for decisions such as exploration, development and production, help predict geological parameters such as rock types, rock layer thickness, groundwater distribution and the like, evaluate geological risks possibly encountered in the exploitation process, and improve the efficiency and feasibility of resource development.
9. Geoscience research and educational training: the method has important scientific significance for geological research of the mixed rock zone. By establishing a multi-time-space three-dimensional geological structure model, the law of evolution of the mixed rock zone can be revealed, and geological processes and structural features are deeply explored. In addition, the method can be applied to geological education training, provides visual and comprehensive geological models for students and researchers, and promotes understanding and learning of geology subjects.
In summary, the multi-time-space three-dimensional geological structure modeling method for constructing the mixed rock zone provided by the application provides high-precision geological structure modeling, and can accurately simulate the geological characteristics and complexity of the mixed rock zone. The method realizes the modeling process combining automation and manual interaction, so that a user can flexibly analyze and modify the geological model. In addition, the method considers the diversity and complexity of the mixed rock zone and provides comprehensive geological information by comprehensively utilizing the multi-source data. The modeling method has important significance for geologic resource evaluation, risk prediction, scientific research and education training, provides a reliable geologic basis for decision and research, can improve the accuracy, visualization and interactivity of geologic models, and provides beneficial geologic information for various application fields.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a modeling flow chart of a multi-time-space three-dimensional geological structure modeling method for constructing a hybrid rock zone according to an embodiment of the application.
Fig. 2 is a modeling timing diagram of a modeling method for constructing a multi-time-space three-dimensional geological structure of a hybrid rock zone according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a geological section in a modeling method of a multi-time-space three-dimensional geological structure of a structural hybrid rock zone according to an embodiment of the application.
Fig. 4 is a schematic diagram of geological map registration in a modeling method of a multi-time-space three-dimensional geological structure of a structural hybrid rock zone according to an embodiment of the application.
Fig. 5 is a schematic diagram of elevation point extraction in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 6 is a schematic diagram of boundary line processing in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 7 is a schematic diagram of range extraction in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 8 is a schematic drawing of fault extraction in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 9 is a schematic diagram of range determination in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 10 is a schematic diagram of an interruption layer construction of a multi-time-space three-dimensional geological structure modeling method for constructing a hybrid rock zone according to an embodiment of the application.
Fig. 11 is a schematic diagram of geologic body construction in a modeling method for constructing a multi-time-space three-dimensional geologic structure of a mixed rock zone according to an embodiment of the application.
Fig. 12 is a schematic diagram of extraction of an invading body profile in a modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone according to an embodiment of the application.
Fig. 13 is a schematic diagram of the construction of an invading body Tin surface in the modeling method of the multi-time-space three-dimensional geological structure of the structural hybrid rock zone according to the embodiment of the application.
Fig. 14 is a schematic diagram of an invaded body in a method for modeling a multi-time-space three-dimensional geological structure of a structural hybrid rock zone according to an embodiment of the present application.
Fig. 15 is a schematic diagram of a hybrid rock zone model in a modeling method for constructing a hybrid rock zone multi-time-space three-dimensional geological structure according to an embodiment of the application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The application provides a modeling method for a multi-time-space three-dimensional geological structure of a structural hybrid rock zone, which utilizes data such as geophysical profile inversion interpretation results, structural-lithology geological map and the like to build a fine deep-large fracture three-dimensional fault network system model comprising deep-large fracture, movable faults and the like; for the geologic structure of ordered geologic relation, introducing the criteria of geologic knowledge management and geologic modeling into the modeling flow, converting geologic elements into the constraint of geologic modeling, and realizing the three-dimensional geologic structure modeling of automatic and manual interaction; aiming at the complexity of complex and various in-band 'rock blocks' and 'matrixes' and the complexity of rapid spatial change, the mixed rock band disorder bad geologic body construction technology under the constraint of an ordered geologic structure (such as a fine fault network, a broken band boundary and the like) is researched.
In the modeling method for the multi-time-space three-dimensional geological structure of the structural mixed rock zone, the modeling and model fusion of the multi-time-space three-dimensional geological structure of the mixed rock zone are realized by utilizing multi-source data and geological knowledge constraint and adopting a mode of combining complex interactive modeling and geological body single modeling through the construction of faults, bedrock and rock mass and the application of Boolean operation.
Referring to fig. 1 and 2, the method for modeling a multi-time-space three-dimensional geological structure of a structural hybrid rock zone provided by the embodiment of the application comprises the following steps:
step 1), collecting finishing data: collecting multi-source data of each mixed rock zone, and preprocessing according to a data format required by modeling;
step 2), modeling data extraction: extracting key data required by modeling from the preprocessed multi-source data, wherein the key data comprises different lithology boundary ranges, fault strike and occurrence information and stratum constraint data;
step 3), three-fault network modeling: constructing a fault plane and processing a main-auxiliary relationship and a boundary relationship of the fault plane according to the extracted fault trend and the occurrence information;
step 4), stratum construction: constructing a basal plane by taking multi-source data as constraint data according to the boundary of a work area and faults in the area; respectively extracting constraint data of different strata, and sequentially adding the constraint data to a model construction list according to the layering sequence of the strata; and constructing an integrated geologic body, and forming a bedrock geologic body after formation of all stratum is completed.
Step 5), extracting boundary lines of the hybrid rock mass: and extracting boundary contour lines of the mixed rock mass mixed in the mixed rock zone from the multi-source data, and completing the construction of a monomer model of the contour lines.
Step 6), constructing surrounding surfaces of the hybrid rock mass: and judging the shape and the shape of the invaded body by referring to the geological section, the fault and the trend and the shape of the stratum, and constructing a closed Tin surface by the extracted contour line of the invaded body.
Step 7), closing the hybrid rock mass: and closing the constructed Tin surface by a way of forming a closed surface body to form a final invaded body.
Step 8), boolean operation: obtaining a bedrock geologic body after deducting an invaded body by using Boolean operation, and obtaining the invaded body inlaid in the bedrock geologic body; and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
In this embodiment, according to the mixed rock zone causes and lithology characteristics, the three-dimensional geologic model is constructed by combining complex interactive modeling and geologic body monomer modeling, faults, bedrock and rock mass are sequentially constructed according to geologic morphology, and finally model fusion is performed through boolean operation, so as to form a complex structural mixed rock zone geologic model.
The method starts from available multi-source data, extracts and decodes relevant original data about a single geological interface, establishes a three-dimensional space form of the single geological interface, and carries out interactive editing; then, intersecting each established geological interface, and removing redundant parts of the geological interface; and finally, splicing all geological interfaces to form a three-dimensional geological body. The geologic body single body modeling is to build a single body surface by using a contour line three-dimensional geologic surface reconstruction algorithm based on contour line information of single bodies such as magma, lens body, reverse fold and the like as a data base, so that the construction of a single body model is realized. The general technical scheme is shown in fig. 1 and 2.
In step 1) of the present embodiment, when collecting the trimming data, the collected multisource data of each mixed rock zone includes geological map, geological profile, DEM elevation and satellite image data of each mixed rock zone region, wherein the DEM elevation data and the satellite image data further generate data formats required by modeling through clipping and splicing processing, data format conversion and coordinate conversion.
The method comprises the steps of collecting data such as geological map, geological profile, DEM elevation and satellite image of each mixed rock zone, sorting, storing, processing and counting the collected data, and sorting the data according to requirements of modeling software on data formats, such as: cutting and splicing the image and DEM data, converting data format, converting coordinates and the like.
In this embodiment, the data preprocessing refers to a process of extracting modeling data after the consolidated multi-source data is imported into the system, and a data form required by modeling can be obtained through the data preprocessing.
Wherein, preprocessing is carried out according to the data format required by modeling, and the method comprises the following steps:
a) And according to a unified naming scheme of the appointed stratum attribute, carrying out unified stratum division on the geological profile, and carrying out attribute assignment on the stratum to form a standardized geological profile.
Referring to FIG. 3, a unified naming scheme for specifying formation properties is shown for normalizing profiles; and determining stratum lithology, sediment and the like attribute information in the modeling area range by professional geologists, uniformly dividing the geological profile, and carrying out attribute assignment on the stratum to form a final standardized geological profile.
b) The collected grid geological map is subjected to geological registration, the registered geological map is subjected to vectorization, and the grid geological map is drawn in the form of vector lines on the geological map according to modeling elements for modeling.
Referring to fig. 4, the geologic map is registered and vectorized according to a coordinate range on the geologic map; carrying out geological registration on the collected grid geological map in professional software, and ensuring the accuracy of the position of the grid geological map; vectorizing the registered geological map, and carrying out key modeling elements such as: elements such as fault strike, stratum pinch-out range and the like are drawn in the form of vector lines, and modeling is provided.
c) Extracting and importing elevation points and contour lines of the DEM elevation data, wherein the extracting and importing of the elevation points and the contour lines of the DEM elevation data comprises the following steps: the method comprises the steps of importing the elevation number of the DEM into modeling software, extracting vector data including elevation points and contour lines of the elevation data of the DEM by using a tool, and participating in the modeling process to control the ground surface.
Referring to fig. 5, elevation points and contour lines are extracted and imported from the DEM elevation data; the DEM data is imported into modeling software, vector data such as DEM elevation points, contour lines and the like are extracted by using a tool, and the vector data participate in the modeling process to control the ground surface.
d) And determining the modeling range of the mixed rock zone, and performing line encryption and cutting operation on the boundary.
The method for determining the modeling range of the mixed rock zone, and encrypting and cutting the boundary line comprises the following steps: and adjusting the modeling boundary according to the size of the modeling work area and the modeling precision, performing line encryption operation on the line with sparse boundary line nodes, performing line filtering operation on the line with dense boundary line nodes, and performing line cutting operation on the boundary line after the boundary line node density reaches a threshold value.
Referring to fig. 6, the modeling range of the mixed rock zone is determined, and a series of operations such as line encryption and shearing are performed on the boundary as required. The modeling boundary is required to be adjusted according to the size of a modeling work area and modeling precision, line encryption operation is carried out on lines with sparse boundary lines, line filtering operation is carried out on lines with dense boundary lines, line cutting and other works are carried out on the boundary lines after the boundary lines have proper and uniform node density, and the boundary lines are ensured to meet modeling requirements.
e) And storing the processed multi-source data, and loading and using according to the flow sequence during modeling.
And storing the processed data, and loading and using according to the flow sequence during modeling. The boundary line is used for restraining the modeling range, the DEM is used for controlling the ground surface, vector data after the vectorization of the geological map is used for controlling the growth range of the earth leakage stratum, profile data is used for controlling the form of the deep stratum, and the deep stratum is respectively involved in different modeling processes.
In the embodiment of the application, after data preprocessing, secondary extraction is required according to the detailed requirement of model construction. The trend and the occurrence of faults are required to be obtained during the construction of faults; the formation is constructed with knowledge of the extent of formation growth and associated constraint data. The related operations are as follows:
1) Because the mixed rock zone model is mainly constructed by bedrock geologic bodies, boundary ranges of different lithologies are extracted according to the registered and vectorized geologic map, and encryption operation is performed, as shown in fig. 7.
2) Extracting trend lines and occurrence information of faults according to a geological map, and extracting trend lines of the faults according to a geological profile, wherein the trend lines, the trend lines and the occurrence information are combined to be used as supporting data of construction of the fault plane, and the supporting data are shown in FIG. 8;
3) Constraint data of different bedrock geologic bodies are extracted according to the geologic profile, and growth trend of the bedrock geologic bodies is controlled, as shown in fig. 9.
In the embodiment of the application, fault modeling is an important part in a three-dimensional geological model, and constraint on a stratum surface or a geological body range and morphology is realized by constructing faults, so that the stratum surface is firstly constructed before the stratum is constructed.
Referring to fig. 10, in step 3), three-fault network modeling includes the steps of:
1) Controlling the growth range of the fault by taking the fault trend line as a reference, judging the intersection relation between the fault and the boundary, and judging the main and auxiliary relation between the fault and the boundary;
2) Constructing a fault plane conforming to a geological map and a geological section by using the extracted fault trend line and the occurrence information;
3) Processing the main-auxiliary relationship and the boundary relationship of the constructed fault plane to enable the fault plane to meet fault requirements of geological body construction;
4) And performing fault detection, namely performing subsequent modeling operation after the fault detection passes, and if the fault detection does not pass, performing corresponding modification according to the error reporting prompt so as to ensure that the fault data finally pass the detection.
In an embodiment of the application, formation surface construction is the process of formation surface mesh structure construction and optimization, and subsequent formation body model formation, after all the data required for model construction is prepared.
Referring to fig. 11, in step 4), the formation construction includes the steps of:
1) And taking the data of a geological map, a geological section, a DEM elevation and a satellite image in the multi-source data as constraint data, and constructing a basal plane according to the boundary of a work area and the faults in the area.
2) And respectively extracting constraint data of different strata, and sequentially adding the constraint data to the model construction list according to the layering sequence of the strata. When the integrated geologic body is constructed, firstly, the pinch-out range of the model needs to be confirmed, secondly, whether the constraint data has logic errors such as overlapping points, higher than the basal plane and the like or not needs to be checked, after correction, the Top plane can be constructed, the basal plane is taken as the Bottom plane, the intersection relation between the planes is processed, and the integral geologic body is sealed. And after all stratum are formed, forming bedrock geologic bodies.
In the present application, in the case of boundary line extraction of a mixed rock mass, boundary line extraction of a geologic body such as a rock mass is performed, and as shown in fig. 12, the boundary line extraction of a geologic body such as a rock mass which is included in a mixed rock zone is extracted from data such as a geologic profile and a geologic map, and a single model construction of the boundary line is realized.
In the application, when the surrounding surface of the hybrid rock mass is constructed, the surrounding surface/interface construction of the geological body such as the rock mass is aimed at, wherein, referring to fig. 13, the shape and the yield of an invading body are judged by referring to the geological section, the fault and the trend and the yield of the stratum, and the closed Tin surface is constructed by the extracted outline of the invading body, so that the Tin surface is attached to the geological section, the geological map and the yield of the fault, and the Tin surface is ensured to accord with the geological cognition.
In the present application, when a hybrid rock is closed, the hybrid rock is closed against a geological body such as a rock. Referring to fig. 14, the constructed Tin face is closed by means of a closed face formation to form the final intrusion.
In this embodiment, referring to fig. 15, in step 8), the boolean operation includes the following steps:
because the geologic body such as rock mass is a fine impurity part embedded in the bedrock geologic body, the bedrock geologic body after deducting the invaded body is obtained by using the A-B operation of Boolean operation, and the invaded body embedded in the bedrock geologic body is obtained by using the A-B operation; and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
When an invader embedded in a bedrock geologic body is obtained, the invader is extracted from each bedrock geologic body independently aiming at the conditions of exposure and cross faults of partial invader.
Note that the arrows in fig. 3 to 15 represent coordinate orientations in three dimensions, and the default arrow points to north in constructing a multi-time-space three-dimensional geologic structure modeling demonstration of a mixed rock zone.
The modeling method for the multi-time-space three-dimensional geological structure of the structural mixed rock zone combines various data such as geophysical profile inversion interpretation results, structural-lithology geological maps and the like, and can more accurately simulate the geological structure of the mixed rock zone through a fine deep and large fracture three-dimensional fault network system model. The method is favorable for improving the accuracy of geological modeling, reducing modeling errors and enabling the geological model to be more authentic and credible.
The multi-time-space three-dimensional geological structure modeling method for the structural hybrid rock zone introduces the criteria of geological knowledge management and geological modeling, converts geological elements into constraints of geological modeling, and realizes three-dimensional geological structure modeling of automatic and manual interaction. Through manual participation and guidance, the modeling process can be guided and corrected by effectively utilizing professional geological knowledge, and the modeling accuracy and reliability are improved.
There is a complex diversity of rock masses and matrices within the mixed rock band and rapid changes in space. According to the method, the mixed rock zone disorder bad geologic body construction technology under the constraint of the ordered geologic structure is researched, the change of complex lithology in the mixed rock zone can be effectively processed, the complex lithology in the mixed rock zone is incorporated into a modeling process, and the comprehensive expression capacity of a geologic model is improved.
The application starts from available multi-source data, including geological map, geological section, DEM elevation, satellite image and the like, and comprehensively utilizes the data for modeling. Through data preprocessing, extraction and interpretation, the data is converted into a form required by modeling, and data support and basis are provided for constructing a real and accurate geological model.
The multi-time-space three-dimensional geological structure modeling method for the structural mixed rock zone provided by the application provides high-precision geological structure modeling, and can accurately simulate the geological characteristics and complexity of the mixed rock zone. The method realizes the modeling process combining automation and manual interaction, so that a user can flexibly analyze and modify the geological model. In addition, the method considers the diversity and complexity of the mixed rock zone and provides comprehensive geological information by comprehensively utilizing the multi-source data. The modeling method has important significance for geologic resource evaluation, risk prediction, scientific research and education training, provides a reliable geologic basis for decision and research, can improve the accuracy, visualization and interactivity of geologic models, and provides beneficial geologic information for various application fields.
It should be understood that although described in a certain order, the steps are not necessarily performed sequentially in the order described above. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, some steps of the present embodiment may include a plurality of steps or stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily sequential, but may be performed alternately or alternately with at least a part of the steps or stages in other steps or other steps.
In one embodiment, a computer device is provided in an embodiment of the present application, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps in the above-described method for modeling a multi-time-space three-dimensional geologic structure of a formation-mixed rock zone when the computer program is executed.
In one embodiment, a storage medium is provided having stored thereon a computer program which, when executed by a processor, implements the steps in the above-described method of modeling a multi-time-space three-dimensional geological structure of a formation of a hybrid rock zone.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory.
The non-volatile memory may include read-only memory, magnetic tape, floppy disk, flash memory, optical memory, etc. Volatile memory can include random access memory or external cache memory. By way of illustration, and not limitation, RAM can take many forms, such as static random access memory or dynamic random access memory.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (10)
1. A modeling method for constructing a multi-time-space three-dimensional geological structure of a mixed rock zone comprises the following steps:
step 1), collecting finishing data: collecting multi-source data of each mixed rock zone, and preprocessing according to a data format required by modeling;
step 2), modeling data extraction: extracting key data required by modeling from the preprocessed multi-source data, wherein the key data comprises different lithology boundary ranges, fault strike and occurrence information and stratum constraint data;
step 3), three-fault network modeling: constructing a fault plane and processing a main-auxiliary relationship and a boundary relationship of the fault plane according to the extracted fault trend and the occurrence information;
step 4), stratum construction: constructing a basal plane by taking multi-source data as constraint data according to the boundary of a work area and faults in the area; respectively extracting constraint data of different strata, and sequentially adding the constraint data to a model construction list according to the layering sequence of the strata; constructing an integrated geologic body, and forming a bedrock geologic body after formation of all stratum is completed;
step 5), extracting boundary lines of the hybrid rock mass: extracting boundary contour lines of mixed rock bodies mixed in a mixed rock zone from multi-source data, and completing monomer model construction of the contour lines;
step 6), constructing surrounding surfaces of the hybrid rock mass: judging the shape and the shape of an invading body by referring to the geological section, the fault and the trend and the shape of stratum, and constructing a closed Tin surface by the extracted outline of the invading body;
step 7), closing the hybrid rock mass: closing the constructed Tin surface in a closed surface forming mode to form a final invaded body;
step 8), boolean operation: obtaining a bedrock geologic body after deducting an invaded body by using Boolean operation, and obtaining the invaded body inlaid in the bedrock geologic body; and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
2. The method for modeling a multi-time-space three-dimensional geologic structure of a structural hybrid rock zone according to claim 1, wherein in the step 1), when collecting the collated data, the collected multi-source data of each hybrid rock zone comprises data of geologic map, geologic profile, DEM elevation and satellite image of each hybrid rock zone region, wherein the DEM elevation data and the satellite image data further generate data formats required for modeling through clipping and splicing processing, data format conversion and coordinate conversion.
3. The method for modeling a multi-time-space three-dimensional geologic structure of a structural hybrid rock zone according to claim 2, wherein the preprocessing is performed according to a data format required for modeling, comprising the steps of:
a) According to a unified naming scheme of the appointed stratum attribute, carrying out unified stratum division on the geological profile, and carrying out attribute assignment on the stratum to form a standardized geological profile;
b) Carrying out geological registration on the collected grid geological map, vectorizing the registered geological map, and drawing out the grid geological map in a vector line form on the geological map according to modeling elements for modeling;
c) Carrying out elevation point and contour line extraction and importing on the DEM elevation data;
d) Determining a modeling range of the mixed rock zone, and performing line encryption and cutting operation on the boundary;
e) And storing the processed multi-source data, and loading and using according to the flow sequence during modeling.
4. A method of modeling a multi-time space three-dimensional geologic structure of a structural hybrid rock zone as defined in claim 3, wherein the extracting and importing elevation points and contours of DEM elevation data comprises: the method comprises the steps of importing the elevation number of the DEM into modeling software, extracting vector data including elevation points and contour lines of the elevation data of the DEM by using a tool, and participating in the modeling process to control the ground surface.
5. The method for modeling a multi-time-space three-dimensional geologic structure of a formation of a hybrid rock zone according to claim 4, wherein determining the modeling range of the hybrid rock zone and performing line encryption and shearing operations on the boundary comprises:
and adjusting the modeling boundary according to the size of the modeling work area and the modeling precision, performing line encryption operation on the line with sparse boundary line nodes, performing line filtering operation on the line with dense boundary line nodes, and performing line cutting operation on the boundary line after the boundary line node density reaches a threshold value.
6. The method for modeling a multi-time-space three-dimensional geologic structure of a structural hybrid rock zone according to claim 5, wherein in step 2), modeling data is extracted, comprising the steps of:
extracting boundary ranges of different lithologies according to the registered and vectorized geological map, and performing encryption operation;
extracting trend lines and occurrence information of faults according to a geological map, and extracting trend lines of the faults according to a geological profile, wherein the trend lines, the trend lines and the occurrence information are combined to be used as supporting data for construction of the fault plane;
and extracting constraint data of different bedrock geologic bodies according to the geologic profile, and controlling the growth trend of the bedrock geologic bodies.
7. The method for modeling a multi-time-space three-dimensional geologic structure of a structural hybrid rock zone as defined in claim 6, wherein in step 3), three-fault network modeling is performed, comprising the steps of:
controlling the growth range of the fault by taking the fault trend line as a reference, judging the intersection relation between the fault and the boundary, and judging the main and auxiliary relation between the fault and the boundary;
constructing a fault plane conforming to a geological map and a geological section by using the extracted fault trend line and the occurrence information;
processing the main-auxiliary relationship and the boundary relationship of the constructed fault plane;
and performing fault detection, and if the fault detection does not pass, performing corresponding modification according to the error reporting prompt until fault data pass detection.
8. The method for modeling a multi-time-space three-dimensional geologic structure of a formation of a hybrid rock zone of claim 7, wherein in step 4), the formation construction comprises the steps of:
taking the data of a geological map, a geological section, a DEM elevation and a satellite image in the multi-source data as constraint data, and constructing a basal plane according to the boundary of a work area and the faults in the area;
respectively extracting constraint data of different strata, and sequentially adding the constraint data to a model construction list according to the layering sequence of the strata;
constructing an integrated geologic body, wherein the pinch-out range of a model is confirmed, whether the constraint data have overlapping points and logic errors higher than a basal plane is checked, a Top plane is constructed after correction, the basal plane is taken as a Bottom plane, the intersection relation between the planes is processed, and the integral geologic body is closed;
and after all stratum are formed, forming bedrock geologic bodies.
9. A method of modeling a multi-time space three-dimensional geologic structure for constructing a hybrid rock zone as defined in any of claims 1-8, wherein in step 8), boolean operations are performed comprising the steps of:
b, using the A-B operation of Boolean operation to obtain a bedrock geologic body with the invaded body subtracted, and using the A-B operation to obtain the invaded body inlaid in the bedrock geologic body;
and integrating the obtained bedrock geologic body and the invaded body model to finally obtain the mixed rock zone geologic model.
10. The method for modeling a multi-time-space three-dimensional geological structure of a structural hybrid rock zone according to claim 9, wherein when an invaded body embedded in a bedrock geological body is obtained, the method is independently extracted from each bedrock geological body according to the conditions of exposure and cross fault of partial invaded body.
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