Method and system for collaborative construction of urban-level geological model and engineering-level geological model

Abstract

The present invention relates to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, the method comprising the following steps of building a city-level structural model: obtaining a small-scale geological map to build a model framework, the model framework comprising loose sedimentary layers and bedrock; obtaining DEM data to build a surface; obtaining project data to build a standard stratum; using an engineering-level modeling algorithm to build a local area high-precision model in an area with sufficient data; and building a low-precision model of an artificially supplemented profile in a large area with no data or scarce data. The beneficial effect of the present invention is that it solves the problem of three-dimensional geological modeling of large-scale, large-area, and massive data at the city level.

Description

Technical Field

[0001] The present invention belongs to the field of three-dimensional geological modeling, and in particular relates to a method and system for collaboratively constructing a city-level geological model and an engineering-level geological model. Background Art

[0002] As a professional tool for geological modeling, the three-dimensional geological modeling system has not yet developed a method for the coordinated implementation of single-project rapid modeling and large-scale city-level modeling. It is necessary to propose a method and system for the coordinated construction of city-level geological models and engineering-level geological models based on multi-source data fusion modeling such as geophysical exploration, so as to provide a better geological basic model for numerical simulation analysis and BIM design. Summary of the invention

[0003] In order to solve the technical problem proposed by the present invention, a first aspect of the present invention provides a method for collaboratively constructing a city-level geological model and an engineering-level geological model. The method for constructing a city-level geological model comprises the following steps:

[0004] The engineering-level geological structure model construction method is used to construct a high-precision local structure model, and the artificial supplementary profile method is used to construct a standard-precision structure model;

[0005] Determining a boundary of a city-level attribute model based on the boundary of the high-precision local structure model and the standard-precision structure model;

[0006] Constructing a high-precision local attribute model and a general-precision attribute model according to the boundary of the city-level attribute model;

[0007] A plurality of the high-precision local attribute models and a plurality of the general-precision attribute models are spliced ​​into the city-level attribute model.

[0008] The second aspect of the present invention relates to a system for collaboratively constructing a city-level geological model and an engineering-level geological model, the system comprising at least one processor; and a memory storing instructions, which, when executed by at least one processor, implement the steps of the method of the first aspect.

[0009] The beneficial effects of the present invention are that, based on the seamless splicing technology of the three-dimensional geological model and the local update technology of the three-dimensional geological model, a method and system for collaborative construction of a city-level geological model and an engineering-level geological model are proposed, which solves the problem of three-dimensional geological modeling of large-scale, large-region, and massive data at the city level. Since it is based on large-volume and large-region massive data modeling, a multi-scale, multi-precision, and multi-parameter city-level three-dimensional geological model is formed. Its uses include but are not limited to providing model display, model analysis, and geological consulting services to owners on a three-dimensional visualization platform, which is particularly suitable for constructing three-dimensional geological models of large and super-large cities. At the same time, due to the use of complex geological structure modeling, exploration, geophysical exploration, drilling CT and other multi-source data fusion modeling, and key technologies for dynamic model updating, an engineering-level three-dimensional geological model is formed. Its uses include but are not limited to project engineers conducting single project modeling, achieving results form improvement, and achieving three-dimensional visualization delivery of survey results. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 .Flowchart of collaborative construction method of urban modeling and geological survey engineering modeling;

[0011] Figure 2 .Flowchart of city-level geological model construction;

[0012] Figure 3 . Flow chart of overall modeling technology for large work areas;

[0013] Figure 4 .Sketch of multi-person parallel working mode;

[0014] Figure 5 .Blocking scheme of a city's global model;

[0015] Figure 6 .Grid splicing principle diagram;

[0016] Figure 7 .Schematic diagram of plane grid division of a city's entire model;

[0017] Figure 8 .Topological diagram of the collaborative construction system of urban modeling and geological survey engineering modeling. DETAILED DESCRIPTION

[0018] Various aspects of the present disclosure will now be explained with reference to the accompanying drawings. As long as the shapes, relative positions and other aspects of the components described in these aspects are not clearly defined, the scope of the present disclosure is not limited to the components shown, which are only used for illustrative purposes. In addition, although many details are set forth, it should be understood that some aspects of the present disclosure can be implemented without these details. In other cases, well-known circuits, structures and technologies are not shown in detail to avoid obscuring the understanding of the description.

[0019] In the present invention, the corresponding geological terms, in addition to representing the original geological meaning, also represent digital geological information or address data, etc., which can be processed and recognized by computers, depending on the description scenario. For example, geological map also refers to geological map data.

[0020] Geological data include surface topographic data, geological map data, drilling data, and projection parameters.

[0021] For surface topographic data, the 12.5-meter DEM data downloaded from the ALOS website can be used, and the surface model can be generated using a 50-meter-precision grid. A geological map refers to a map that uses a certain legend to represent the formation era of sedimentary rock layers, igneous rock bodies, geological structures, and other related geological bodies and geological phenomena on a topographic map of a certain scale, such as a geological map of a certain area, a geological structure map, a Quaternary geological and geomorphological map, a bedrock geological map, a distribution map of major active faults, and a zoning map for the evaluation of engineering geological stability of major active faults.

[0022] For example, the standard geological stratification of boreholes is divided into 14 levels according to the main engineering geological layers and rock and soil nomenclature.

[0023] Standard layering scheme for surface drilling

[0024] Serial number Strata No. Lithology 1 Fill 1 Fill 2 Powder 2 Silt 3 Clay 3 Clay soil 4 Sand 4 sand 5 Sandy soil and gravel 5 Sandy gravel soil 6 Clay 5 Clay soil 7 Sand 7 sand 8 Clay soil 8 Clay soil 9 Sand 9 sand 10 Clay 10 Clay soil 11 Sand 11 sand 12 Clay soil 12 Clay soil 13 Sand 13 sand 14 Rock 14 rock

[0025] Projection parameter modeling data adopts the national 2000 standard projection parameters: CGCS2000 / 3-degree Gauss-Kruger CM 117E, EPSG: 4548. All data involved in modeling must be converted to the above unified parameters to ensure the consistency of geological data.

[0026] Lithology refers to some properties that reflect the characteristics of rocks, such as color, composition, structure, cementation, cementation type, special minerals, etc.

[0027] Stratum is a general term for all layered rocks, including metamorphic and volcanic stratified rocks. It is a layer or a group of rock layers with certain unified characteristics and properties and are clearly distinguished from the upper and lower layers.

[0028] Kriging is a regression algorithm that performs spatial modeling and prediction (interpolation) of random processes / random fields based on covariance functions. In certain random processes, such as intrinsic stationary processes, Kriging can give the best linear unbiased prediction (BLUP), so it is also called the spatial best unbiased estimator (spatial BLUP) in geostatistics.

[0029] The principle of sequential simulation is to sequentially calculate the conditional cumulative distribution function of each grid node along a random path and obtain the simulation value from the conditional cumulative distribution function.

[0030] Sequential Gaussian simulation is a random simulation method that combines Gaussian probability theory with a sequential simulation algorithm to generate the spatial distribution of continuous variables. It is usually applicable to continuous variables.

[0031] The principle of distance weighting is that the attribute value of the point to be inserted is the weighted average of the attribute values ​​of the known scattered points in the neighborhood of the point to be inserted, and the size of the weight is related to the distance between the point to be inserted and the scattered points in the neighborhood.

[0032] like Figure 1 As shown, some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, including the following steps of a method for constructing a city-level geological model:

[0033] S1: Use the engineering-level geological structure model construction method to build a high-precision local structure model, and use the artificial supplementary profile method to build a standard-precision structure model;

[0034] S2: Determine the boundary of the city-level attribute model based on the boundary of the high-precision local structure model and the standard-precision structure model;

[0035] S3: constructing a high-precision local attribute model and a general-precision attribute model according to the boundary of the city-level attribute model;

[0036] S4: combining the plurality of high-precision local attribute models and the plurality of general-precision attribute models into the city-level attribute model.

[0037] In these technical solutions, because the scale of the city-level structural model is relatively large and the range is wide, hierarchical modeling is adopted in the construction of the city-level structural model. In the construction of the city-level geological model, the engineering-level geological structure model construction method is introduced to construct a high-precision local structural model, and the coordinated construction of the city-level geological model and the engineering-level geological model is realized. Since it can be based on the massive data modeling of the city-level with large volume and large area, a multi-scale, multi-precision, and multi-parameter city-level three-dimensional geological model is formed. The uses of the city-level geological model include but are not limited to providing model display, model analysis, geological consulting services, etc. for owners on a three-dimensional visualization platform, which is particularly suitable for the construction of three-dimensional geological models of large and super-large cities. "Engineering-level geological structure model construction method" is a known technology, and methods that can construct high-precision local structural models are all within the scope of the present invention. "Artificial supplementary profile method" is also a known technology, and methods that can construct standard precision structural models are all within the scope of the present invention. Artificial supplementary profiles can make up for the shortcomings of drilling data, but the accuracy is worse than drilling data.

[0038] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model. The method for constructing a city-level geological model further includes one or more of the following steps:

[0039] aligning the boundaries of the city-level structural model and the city-level attribute model;

[0040] Setting a standard stratum, determining whether the project data is standardized project data defined by the standard stratum, and if so, it can be used to construct the city-level structural model;

[0041] A model framework is constructed based on a small-scale geological map of the city, wherein the model framework only divides the loose sedimentary layer and the bedrock layer; preferably, the model framework is also constructed based on geophysical data;

[0042] Construct the high-precision local structure model in the area with sufficient data, and construct the standard-precision structure model in the area with insufficient data;

[0043] The surface of a city-level structural model is constructed using DEM data, wherein the city-level structural model includes the high-precision local structural model and the standard-precision structural model.

[0044] Among these technical solutions, standard strata refer to the use of a unified stratigraphic stratification scheme in the city-level modeling process, thereby ensuring that non-standardized project data cannot enter the city-level structural model. Select a small-scale geological map to build a city-level structural model framework, which only divides loose sedimentary layers and bedrock. If there is geophysical data, it can be used as a supplement to the geological map. Establish a local high-precision model in areas with sufficient data and implement it according to the engineering-level modeling plan; in areas with no data or scarce data, the method of artificially supplementing profiles can be used for modeling. In addition, the surface can use DEM data from public data sources.

[0045] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, wherein the attributes include discrete attributes and continuous attributes, and the continuous attributes include lithological attributes; when the attribute is the lithological attribute, an engineering-level attribute model construction method is used to construct the city-level attribute model; the engineering-level attribute model construction method includes any one of Kriging interpolation method, sequential simulation interpolation method, and distance weighted interpolation method.

[0046] In these embodiments, city-level attribute modeling is performed with reference to the following scheme; the attribute model boundary is consistent with the structural model boundary; the attributes should include discrete attributes and continuous attributes; the attribute modeling mainly adopts Kriging, sequential simulation, distance weighting and other methods, but other known methods are also within the selection scope of the present invention; for lithological attributes, the attribute modeling method can be adopted; and the attribute model splicing technology is used to construct a large-scale model.

[0047] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model. The method for constructing a city-level geological model also includes the following steps: using the ID of the standardized project data and the ID of the drilling data together as the ID of the project drilling data, and merging multiple project drilling data into a set as city-level project data.

[0048] In these embodiments, for city-level modeling: the project ID and the borehole ID are used together as a new borehole ID, and the borehole data of multiple projects can be merged into one set for modeling. Correspondingly, for engineering-level modeling: in the modeling software, after selecting the engineering project name, the corresponding borehole position and layering information are automatically imported into the modeling software, and after the data extraction operation is performed, it can be applied to the modeling process.

[0049] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, and also include the following steps of the method for constructing an engineering-level geological model:

[0050] Build engineering-level structural models based on drilling data or other local modeling data files;

[0051] Performing multi-level and multi-scale meshing under the constraints of the engineering-level structural model to generate a truncated rectangular mesh;

[0052] In the truncated rectangular grid, borehole attribute data is extracted and an engineering-level attribute model that conforms to geological laws is interpolated; the borehole attribute data includes borehole in-situ data and geotechnical test data.

[0053] In these embodiments, the method for constructing an engineering-level geological model of the present invention adopts any known method for constructing an engineering-level geological model, and any known method that satisfies the construction of an engineering-level attribute model in a truncated rectangular grid is within the selection scope of the present invention. It is known that the construction of a three-dimensional geological model includes two main modeling processes: structural modeling and gridding and attribute modeling. For example, an embodiment of the present invention can first generate a structural framework model based on borehole data and other local modeling data files; then perform grid division under the constraints of the structural framework to generate a truncated rectangular grid model; multi-level and multi-scale grid division can be performed, and engineering-level and city-level grid requirements can be supported at the same time. In the grid model, the borehole attribute data such as in-situ drilling and geotechnical tests are extracted, and an attribute model that conforms to geological laws is interpolated.

[0054] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, and further include the following model updating steps:

[0055] When receiving an uploaded model file in the structure model Obj format, the model data type automatically switches to the structure model;

[0056] When a model file in the structure model Jsm format is received, the model data type is automatically switched to the structure model;

[0057] When a model file in the attribute grid Result format is received, the model data type automatically switches to the attribute model;

[0058] When receiving a model file in the attribute model Ifc format, the model data type automatically switches to the attribute model;

[0059] When a model file in the model boundary Shp format is received, the model data type is automatically switched to model boundary.

[0060] In these embodiments, local updating technology of the three-dimensional geological model and dynamic updating of the model are implemented.

[0061] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model. The method for constructing a city-level geological model further includes one or more of the following steps:

[0062] The block structural modeling sets a number of model blocks in the city, constructs the high-precision local structure model and the standard-precision structure model in the model blocks, and maintains a certain common area between the model blocks;

[0063] The model splicing sets the same overall grid parameters for the grid models corresponding to the various model blocks, and splices the grid models of different model blocks.

[0064] In these embodiments, due to the use of block-based modeling, there are certain common areas between the various model blocks; model splicing refers to the splicing of mesh models; and mesh model splicing needs to be based on the global definition of the entire mesh. When modeling with block-based modeling, the model should deliberately maintain the existence of common areas between different blocks when setting the block range.

[0065] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, wherein the steps for setting the overall grid parameters are as follows:

[0066] Prepare an overall model in advance;

[0067] When defining the plane grid parameters, correspond the plane extent to the overall extent of the project;

[0068] Set the vertical grid division parameters;

[0069] Add the attribute model that needs to be built;

[0070] Export the parameter definition of the entire mesh model to a shared data directory.

[0071] In these embodiments, in order to ensure that the grid models of different sub-blocks can be successfully spliced, the grid models of each sub-block need to use the same overall grid parameter settings. The embodiments of the present invention do not limit the method of using the overall grid of the global scope. For example, the overall grid model is configured for the large work area; when the sub-block is performing grid modeling, the pre-defined overall grid model of the entire project scope can be opened, mainly using the parameter settings of the overall model. The embodiments of the present invention do not limit the method of creating and generating a sub-region grid model. For example, when creating a sub-region of the overall grid model, the scope of the sub-region should fall within the scope of the current construction model block to generate the grid model.

[0072] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model.

[0073] The model update is implemented by a model upload tool, which includes a city-level model upload and download module and a project-level model upload and download module;

[0074] The city-level model uploading module uploads the city ID location according to the selected city name, and the project-level model uploading module uploads the project ID location according to the selected project name;

[0075] The city-level model uploading module marks the corresponding block ID position through the model name; the grid size and direction block index number are added to the model name.

[0076] In these embodiments, the corresponding block position is marked by the model name, and the x and y direction block index numbers are added to the model name, such as Beijing global model 100_1_2: it represents the block model with x direction index 1 and y direction index 2 in the Beijing global model with a grid size of 100.

[0077] Some embodiments of the present invention relate to a method for collaboratively constructing a city-level geological model and an engineering-level geological model, wherein the model uploading tool further comprises:

[0078] Upload attribute raster data step, the outer layer of the attribute raster data is the attribute name, and the inner layer is the Result file of multiple resolution levels of one attribute; the attribute raster data of each attribute is separately packaged and uploaded, each attribute corresponds to a zip file, and the file name is still the attribute name;

[0079] Upload the JSM model data directory step. The JSM model files and directory data of the original geological model need to be packaged into a ZIP file and uploaded to the big data center.

[0080] Some embodiments of the present invention also relate to a collaborative construction method of urban modeling and geological survey engineering modeling, wherein the model uploading tool further comprises:

[0081] 1) Before uploading, select the data with large volume and regenerable data and temporarily remove it, and restore the temporarily removed data after uploading;

[0082] 2) Compress the larger model data directory file before uploading and split it into multiple compressed packages;

[0083] 3) The compressed file of the model data directory may be large and needs to be split into multiple compressed packages;

[0084] 3) Multipart upload mechanism and interface.

[0085] Some embodiments of the present invention also relate to a collaborative construction method of urban modeling and geological survey engineering modeling, and upload an obj data directory.

[0086] Some embodiments of the present invention also relate to a collaborative construction method of urban modeling and geological survey engineering modeling, wherein the model update is also implemented by a model download tool:

[0087] When downloading a city-level model, the following steps are involved:

[0088] The user needs to select the city name;

[0089] In the drop-down list under the city, all city names are listed and users can select;

[0090] When switching to select a city, the model name list will list all the model names contained in this city, and users can switch to select;

[0091] When you switch to select a model, the model format list will list all the model data format types contained in the current model directory. If there are only Jsm format data, only Jsm will be listed in the model format.

[0092] When switching the model data format, the model data category and whether it contains water surface information are updated accordingly, and the model data description information is updated.

[0093] Some embodiments of the present invention also relate to a method for collaboratively building urban modeling and geological survey engineering modeling.

[0094] Click "Download" to start downloading model data:

[0095] First check the following:

[0096] The local data directory cannot be empty;

[0097] Model name cannot be empty;

[0098] If it is a project-level model, the project name cannot be empty;

[0099] If it is a city-level model, the city name cannot be empty;

[0100] Then, according to the interface of the big data center, the model data storage location and model information of the specified project, specified model name, specified model data type, and specified format type are obtained;

[0101] First, display the model data information in the text box;

[0102] If the model data does not exist, an error message will be displayed in the text information box and the download will end; if the model data exists, the model data will continue to be downloaded; the model data ZIP file will be downloaded to the local computer and unzipped, the Deep Exploration 3D modeling software will be started, and the model will be opened.

[0103] Some embodiments of the present invention also relate to a method for collaboratively building urban modeling and geological survey engineering modeling.

[0104] When downloading an engineering-level model, the following steps are involved:

[0105] When the user switches the model level to engineering level, the model download tool interface is updated to the following interface:

[0106] The city drop-down list box will be hidden; a project drop-down list box will be added; users can select a project name;

[0107] When switching to a project name, the model name list will be updated; the model name list lists all the model names contained in the currently selected project;

[0108] Users can switch to select the model name;

[0109] When you switch the model name, the Model Data Format drop-down list and the Model Data Type list are updated.

[0110] The modeling process of the present invention will be further described below in conjunction with some specific embodiments.

[0111] Combination Figure 2 As shown, in this embodiment, the modeling uses borehole data and geological maps to jointly construct a three-dimensional geological model: this method fully utilizes the data characteristics of borehole data and geological maps, ensures the accuracy of the three-dimensional geological model in the horizontal and vertical directions, and at the same time, the constructed three-dimensional geological model is closer to the actual geological structure characteristics. At the same time, the use of database storage technology and large-scale overall modeling technology ensures the overall construction of a 50m precision geological model for the entire city.

[0112] Combination Figure 3As shown in the figure, database storage technology breaks the traditional independent model file storage mode and adopts a fragmented storage mode. The result model is stored in the form of table and field storage, which is the technical core of the model database. The overall model can be divided into cells by users, and the division results are saved in the database file. Each cell is stored in a table in the database, and the table records information in the form of fields. When downloading a local model, the locked cell will be judged. Therefore, the local model is established, and the export results are also exported by processing to make it into multiple fragment models (cell models). Recording in the database is to record the information of each fragment model in the form of fields in the corresponding cell table to achieve storage. The calling process is similar to storage. After extracting the locked cell model in the database, some processing is required to combine them into a complete model, and then load them into the modeling software to realize the display of the result model.

[0113] Combination Figure 4 As shown, the overall modeling technology of large work areas supports the parallel modeling work mode of multiple people, realizes the local block modeling of a single machine, and the overall splicing of the model in the database.

[0114] The following is an example of a city to further explain the construction of geological structure model and grid model.

[0115] 1. Geological structure model

[0116] 1. Data Storage

[0117] MySQL database stores information in tables and fields, and manages data and model results in a fragmented manner. This management method supports large-scale modeling of large work areas with large data volumes, and modeling work is not restricted by scope and accuracy. For example, the data stored in the global model of a city mainly include: surface topography data (DEM), contour data of the interface between the Quaternary system and bedrock, boundary data between the Quaternary system and bedrock on the surface, distribution data of fault lines on the surface, administrative boundaries, model block boundaries, hole positions and stratification data of engineering geological drilling holes, etc.

[0118] 2. Model block division (modeling by block construction)

[0119] Combination Figure 5 As shown in the figure, the model is divided into blocks based on the comprehensive consideration of the distribution of boreholes and the computing power of a single machine. The whole-domain model of a city is divided into 81 blocks, of which 56 blocks are within the administrative area of ​​the city. The X-axis length of each block is 20,000 meters and the Y-axis length is 21,000 meters.

[0120] 3. Data and model download

[0121] When downloading data and models, the data required for modeling is downloaded from the MySQL database based on the divided block boundary line. Each time the model data is downloaded, it will be expanded based on the block boundary line to ensure the consistency and integrity of subsequent model splicing. The downloaded block will be displayed in red, indicating that the data and model of the area have been locked, and other personnel cannot download the data and model of the same area.

[0122] The idea of ​​data downloading and modeling is to first build a 3D geological structure model in the data-rich area, and then gradually transition to the data-sparse area.

[0123] 4. Build the model

[0124] Model construction refers to building a local area model in a single-machine environment. Its main work content includes Figure 2 The contents of parts 1, 2, and 3 are shown in the figure. The main process is:

[0125] 1) First, download the block data of the area with rich geological data in the geological database.

[0126] 2) Load the model data into the modeling software on a single machine.

[0127] 3) Use the surface terrain data to generate a 50m accurate surface model, and project the fault line onto the corresponding surface model. The structural interpretation module in the software draws a section perpendicular to the fault strike, and draws the fault interpretation line manually on the section based on the three elements of the fault (strike, dip, and inclination). The interpretation data and fault line data are extracted to the corresponding fault, and the interpolation algorithm of the continuous surface is used to automatically generate the fault plane.

[0128] 4) On the basis of generating the fault model, the main geological framework model is generated using the bottom contour data of the Quaternary system and the boundary data between the Quaternary system and the bedrock on the surface.

[0129] 5) Based on the above geological main framework model, using the stratification data of the borehole, the software automatically calculates the missing virtual stratification points on the borehole according to the standard stratification scheme and stratum annihilation scheme, and completes the stratification data on the borehole according to the standard stratification scheme.

[0130] 6) At the same time, the software will calculate the thickness of each borehole stratification point from the ground surface, and then generate a thickness surface based on the thickness of each borehole using the continuous surface interpolation method. By subtracting the thickness surface from the ground surface, the stratigraphic surface data of the corresponding borehole stratification can be obtained, and the stratigraphic surface with fractures can be generated using the minimum curvature algorithm.

[0131] 7) After the fault plane and stratigraphic plane models are generated, click Generate Strata to generate a three-dimensional geological structure model.

[0132] 8) Check the quality of the generated model by generating plan views, drawing well section views, drawing sections at arbitrary locations, etc.

[0133] 9) After the model quality check is passed, right-click the model building node in the modeling software and select Export Model Data or Export Model Mesh to export the model data and model mesh.

[0134] 5. Model upload

[0135] After exporting the model data and model mesh, right-click the construction model node in the modeling software and select Upload Model Data, Upload Model Mesh to upload the constructed model to the model database. You must upload the model data successfully before uploading the model mesh.

[0136] 6. Seamless model splicing

[0137] The splicing of geological structure models (model splicing) is to complete the splicing of fault data and stratigraphic data on the basis of unified geological results (fault data, stratigraphic data, drilling data), and use grid division and fusion technology to realize the splicing and fusion of stratigraphic grids in the model database.

[0138] The grid of the overlapping area is generated by cutting, dividing and merging the grids under the constraints of the original stratigraphic grids. First, the existing stratigraphic grids within the overlapping boundary are cut (deleted), and then the stratigraphic grids in the overlapping area are divided and regenerated into triangular grids under the constraints of the original stratigraphic grids and the new stratigraphic grids. Finally, the grids are stored and spliced ​​in the model database.

[0139] Combination Figure 6 As shown, model seamless splicing refers to selecting the unmodeled area in the model database to ensure that there is an overlapping area (common area) between the selected area and the modeled area, and then downloading the model data and model grid in the database, and repeating the aforementioned steps of building the model. After the model is built, the model database is returned to obtain a three-dimensional geological structure model with consistent geometric structure.

[0140] 7. Model Update

[0141] When the modeling data is updated, the model data and model grid of the corresponding block can be downloaded from the model database, and then the 3D geological structure model can be regenerated under the constraints of the updated data and the model can be sent back to the database to achieve local update of the 3D geological model.

[0142] 2. Construction of geological grid model

[0143] 1. Meshing

[0144] Taking the global model of a city as the benchmark, the plane grid with a precision of 50m*50m is divided. The number of grids in the X direction of each block is 400, and the number of grids in the Y direction is 420. The number of grids in the X direction of the global model of Beijing is 3618, and the number of grids in the Y direction is 3800. Figure 7 shown.

[0145] Download the model of a single block area from the model database and load it into the modeling software. When performing meshing, define the plane grid parameters and vertical grid parameters of a single block area according to the plane grid parameters and vertical grid parameters of the global model of a city, and then define the number of grids of the corresponding block model in the sub-area of ​​the large work area according to the number of I and J grids shown in the figure above. The software will automatically generate a truncated grid model according to the set grid parameters.

[0146] 2. Export the model

[0147] The generated truncated mesh model can be exported to various formats.

[0148] 3. Model Specifications

[0149] 3.1 Work Area

[0150] The range of the X-axis is 362171.53 to 543045, and the length is 180873.47 meters.

[0151] The Y axis ranges from 4362930 to 4552890, and is 189960 meters long.

[0152] The Z axis ranges from 2325 to -7000, and the depth is 9325 meters.

[0153] 3.2 Model area

[0154] The model area is 16,425 square kilometers.

[0155] 3.3 Grid accuracy

[0156] Structural model grid accuracy: 50 meters. Truncated grid model grid accuracy: 50 meters * 50 meters, number of grids: 228065280.

[0157] Some other embodiments of the present invention relate to a system 1 for collaboratively constructing a city-level geological model and an engineering-level geological model, wherein the system 1 includes at least one processor 2; a memory 3 and a network interface 4, wherein the memory 3 stores instructions, and when the instructions are executed by at least one processor 2, the steps of the aforementioned method are implemented.

[0158] The embodiments and functional operations of the subject matter described in this specification may be implemented in: digital electronic circuitry, tangibly implemented computer software or firmware, computer hardware, including the structures disclosed in this specification and their structural equivalents, or a combination of more than one of the above. The embodiments of the subject matter described in this specification may be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on one or more tangible non-transitory program carriers, for execution by a data processing device or to control the operation of a data processing device.

[0159] Although this specification contains many specific implementation details, these should not be interpreted as limitations on the scope of any invention or the scope of what can be claimed, but rather as an illustration of features that can concretize a particular embodiment of a particular invention. The specific features described in this specification in the context of independent embodiments can also be implemented in combination with a single embodiment. Conversely, the various features described in the context of a single embodiment can also be implemented independently in multiple embodiments, or in any suitable sub-combination. In addition, although the features can be described above as a combination effect and even initially required, one or more features from the required combination can be removed from the combination in some cases, and the required combination can be turned to a sub-combination or a variation of the sub-combination.

Claims

1. A method for collaboratively constructing a city-level geological model and an engineering-level geological model, characterized in that: The steps of the method for constructing a city-level geological model are as follows: The engineering-level geological structure model construction method is used to construct a high-precision local structure model, and the artificial supplementary profile method is used to construct a standard-precision structure model; Determining a boundary of a city-level attribute model based on the boundary of the high-precision local structure model and the standard-precision structure model; Constructing a high-precision local attribute model and a general-precision attribute model according to the boundary of the city-level attribute model; splicing a plurality of the high-precision local attribute models and a plurality of the general-precision attribute models into the city-level attribute model; The method for constructing the city-level geological model also includes one or more of the following steps: aligning the boundaries of the city-level structural model and the city-level attribute model; Setting a standard stratum, determining whether the project data is standardized project data defined by the standard stratum, and if so, it can be used to construct the city-level structural model; A model framework is constructed based on a small-scale geological map of the city, wherein the model framework only divides the loose sedimentary layer and the bedrock layer; the model framework is also constructed based on geophysical data; Construct the high-precision local structure model in the area with sufficient data, and construct the standard-precision structure model in the area with insufficient data; Constructing a city-level structural model using surface terrain data, wherein the city-level structural model includes the high-precision local structural model and the standard-precision structural model; The method for constructing the city-level geological model further includes one or more of the following steps: The block structural modeling sets a number of model blocks in the city, constructs the high-precision local structure model and the standard-precision structure model in the model blocks, and maintains a certain common area between the model blocks; Model splicing sets the same overall grid parameters for the grid models corresponding to the various model blocks, and splices the grid models of different model blocks; The method for collaboratively constructing a city-level geological model and an engineering-level geological model also includes the following steps of a method for constructing an engineering-level geological model: Build engineering-level structural models based on drilling data or other local modeling data files; Performing multi-level and multi-scale meshing under the constraints of the engineering-level structural model to generate a truncated rectangular mesh; Extracting borehole attribute data within the truncated rectangular grid and interpolating an engineering-level attribute model that conforms to geological laws; the borehole attribute data includes borehole in-situ data and geotechnical test data; When receiving an uploaded model file in the structure model Obj format, the model data type automatically switches to the structure model; When a model file in the structure model Jsm format is received, the model data type is automatically switched to the structure model; When a model file in the attribute grid Result format is received, the model data type automatically switches to the attribute model; When receiving a model file in the attribute model Ifc format, the model data type automatically switches to the attribute model; When a model file in the model boundary Shp format is received, the model data type is automatically switched to model boundary.

2. The method according to claim 1, characterized in that The attributes include discrete attributes and continuous attributes, and the continuous attributes include lithological attributes. When the attribute is the lithological attribute, the city-level attribute model is constructed using an engineering-level attribute model construction method. The engineering-level attribute model construction method includes any one of a Kriging interpolation method, a sequential simulation interpolation method, and a distance-weighted interpolation method.

3. The method according to claim 2, characterized in that The method for constructing the city-level geological model also includes the following steps: using the ID of the standardized project data and the ID of the drilling data together as the ID of the project drilling data, and merging a plurality of the project drilling data into a set as the city-level project data.

4. The method according to claim 1, characterized in that The steps for setting the overall grid parameters are as follows: Prepare an overall model in advance; When defining the plane grid parameters, correspond the plane extent to the overall extent of the project; Set the vertical grid division parameters; Add the attribute model that needs to be built; Export the parameter definition of the entire mesh model to a shared data directory.

5. The method according to claim 4, characterized in that The model update is implemented by a model upload tool, which includes a city-level model upload and download module and a project-level model upload and download module; The city-level model uploading module uploads the city ID location according to the selected city name, and the project-level model uploading module uploads the project ID location according to the selected project name; The city-level model uploading module marks the corresponding block ID position through the model name; the grid size and direction block index number are added to the model name.

6. A system for collaboratively building a city-level geological model and an engineering-level geological model, characterized in that: The system comprises at least one processor; and a memory storing instructions, which, when executed by the at least one processor, implement the steps of the method according to any one of claims 1 to 5.

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