Three-dimensional visualization expression method for multi-scale geological structure model
The invention provides a three-dimensional visualization expression method for a multi-scale geological structure model, including: collecting geological exploration data which includes geophysical information, drilling information, outcrop survey information, seismic information and geological age data; performing interpolation simulation on the geological exploration data to obtain an exploration sample set; preprocessing the exploration sample set to obtain preprocessed data, the preprocessing process including data cleaning, format unification and noise removal; constructing a multi-scale geological structure model according to the preprocessed data based on a three-dimensional modeling technology; performing scale decomposition on the geological structure model using a multi-scale analysis method to form model representations at different scale levels; and converting the model representations into 3D visualization images using a 3D graphics processing technology. The invention can effectively improve the expression ability of geological model and user experience, and has important practical application value for geological exploration and resource assessment.
1. A three-dimensional visualization expression method for a multi-scale geological structure model, comprising following steps: collecting geological exploration data, wherein the geological exploration data comprises geophysical prospecting information, drilling information, outcrop survey information, seismic information and geological age data; performing interpolation simulation on the geological exploration data to obtain an exploration sample set; preprocessing the exploration sample set to obtain preprocessed data, wherein the preprocessing comprises data cleaning, format unification and noise removal; constructing a multi-scale geological structure model according to the preprocessed data based on a three-dimensional modeling technology; performing scale decomposition on the geological structure model using a multi-scale analysis method to form model representations at different scale levels; and converting the model representations into three-dimensional visualization images using a three-dimensional graphics processing technology; and wherein the constructing a multi-scale geological structure model according to the preprocessed data based on a three-dimensional modeling technology comprises: constructing a microphase scale model, a structural model and an initial geological model according to the preprocessed data; based on the microphase scale model, the structural model and the initial geological model, constructing a flow simulation process in a real geological environment according to a preset scaling strategy; and updating the microphase scale model, the structural model and the initial geological model according to the flow simulation process to obtain the geological structure model.
2. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 1 , wherein the performing interpolation simulation on the geological exploration data to obtain an exploration sample set comprises: based on a variogram analysis method, performing spatial analysis on the geological exploration data to evaluate a spatial correlation of each data in the geological exploration data; and according to the type of each data in the geological exploration data and the spatial correlation, selecting a corresponding geological data interpolation method to interpolate each data in the geological exploration data to obtain the exploration sample set.
3. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 2 , wherein the geological data interpolation method comprises Kriging interpolation, inverse distance weighted interpolation, radial basis function interpolation, a triangulation method and a smooth surface method.
4. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 1 , wherein the data cleaning comprises: filling missing values of the data and deleting abnormal values of the data.
5. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 1 , wherein the performing scale decomposition on the geological structure model using a multi-scale analysis method to form model representations at different scale levels comprises: acquiring a target analysis area; constructing high-resolution sub-models for a part of the geological structure model corresponding to the target analysis area, wherein the high-resolution sub-models are configured to capture geological features at set scales, and the geological features comprise rock formations, faults and pore structures; performing model integration on each of the high-resolution sub-models to obtain a large-scale model; and performing multi-scale simulation on the target analysis area based on the large-scale model to demonstrate the model representations at different scales.
6. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 1 , wherein the converting the model representations into three-dimensional visualization images using a three-dimensional graphics processing technology comprises: constructing a geological model library and a Building Information Modeling (BIM) component library according to the model representations; building a three-dimensional visualization information model according to the geological model library and BIM component library based on visual programming and a parametric modeling method; and performing visualization display according to the three-dimensional visualization information model to obtain the three-dimensional visualization images.
7. The three-dimensional visualization expression method for the multi-scale geological structure model of claim 6 , wherein the building a three-dimensional visualization information model according to the geological model library and BIM component library based on visual programming and a Revit-parametric modeling method comprises: making a parameterized family; extracting positioning information of model components; extracting parameter information of the model components; organizing and summarizing the positioning information and parameter information of the model components to form an input data form that is standardized in format and readable by a tool; and running the tool in software for visual programming, invoking the parameterized family, reading the input data form, adjusting component family parameters in batches, and building the three-dimensional visualization information model.