Research On 3D Modeling And Teaching Experimental Simulation System Of Strata Based On WebGL

In recent years,with the continuous development and integration of graphics,geology,scientific visualization and geographic information systems,3D geoscience simulation technology has been widely used in geological exploration,mine surveying,water conservancy engineering,digital mines,etc.Industry research and application hotspots.These application studies are usually implemented using professional desktop software,which limits the application scope and users of 3D geoscience simulation technology.With the rapid rise of network technology,computer graphics and information science and technology,especially the emergence of Web3 D technology,the networking of three-dimensional virtual simulation of geosciences has become a new research hotspot.The three-dimensional visualization of geological bodies as the core technology of virtual scene entity reproduction and reuse has undoubtedly played a unique role in it.Based on the drilling data and related geological data,this paper uses the hybrid data model to complete the three-dimensional modeling of strata.Combined with the web page visualization technology,software development technology,database and spatial analysis technology,this paper designs and realizes the three-dimensional modeling of strata and teaching experiment simulation system based on WebGL.The system provides a plug-in free,open and cross platform virtual environment on the network,realizes the basic functions of 3D stratum model,such as browsing,query and calculation,spatial analysis,and provides necessary support and help for experiment teaching,engineering construction,planning and design,and relevant decision-making.The main work and research results are as follows:First,exploration of 3D geological body modeling technology and 3D formation modeling.Firstly,the basic principle of 3D geological body modeling technology is studied;secondly,the core of modeling technology,namely various spatial data models,is analyzed and combed;according to the modeling drilling data,the TIN-GTP mixed data model is selected to complete the formation modeling;finally,based on the pre-processing modeling drilling data,the 3D virtual simulation with GTP model as the basic unit is constructed stratum.Second,organization and storage of 3D model data.According to the actual needs of the system,the appropriate spatial database is selected,the data structure and organization storage mode of the three-dimensional stratum model are explored,the stratum model data information table is designed,and the stratum model data management and storage are realized by using the spatial data engine Post GIS..Third,design and implementation of simulation system for stratum teaching experiment.The basic theory and key technology of visualization and system development are studied,and the application mode of three.js technology of WebGL engine in 3D geological body visualization is discussed.At the same time,the related technology of system development and background development framework are integrated and applied,and the stratum teaching experiment simulation system is designed and implemented.