Three-dimensional solid modeling method based on multi-contour-line triangularization network reconstruction

Abstract

The present invention relates to the technical field of three-dimensional geological modeling and discloses a three-dimensional solid modeling method based on multi-contour-line triangularization network reconstruction. According to the three-dimensional solid modeling method, a triangular sheet surface can be constructed between multiple pairs of mutually paralleled cross-sectional contour lines in pairs of adjacent cross sections by using a multi-contour triangular network reconstruction based algorithm that contains a cross sectional contour line mass center alignment technology, a cross sectional contour line directional consistency technology and a cross sectional contour line curved surface reconstruction technology, so that a surface model of a three-dimensional solid body is completed. Therefore the three-dimensional solid modeling method can synthesize advantages of a surface model modeling method and a body model modeling method to make up for the defects of the method and perform comprehensive expression on solid bodies such as a geological object in a three-dimensional space so as to facilitate space analysis, and meanwhile has the advantages of a simple structure, a small computational amount and less possibility of errors, so that highly precise three-dimensional modeling can be rapidly implemented, and the method has higher practicality.

Description

technical field [0001] The invention relates to the technical field of three-dimensional geological modeling, in particular to a three-dimensional solid modeling method based on multi-contour triangulation reconstruction. Background technique [0002] 3D Geological Modeling (3DGeoscienceModeling) refers to an interdisciplinary subject that combines spatial data management, geological information expression, spatial data analysis and visualization in a 3D environment, using computer technology, and performing geoscience analysis. 3D Geological Modeling Since it was proposed by Canada's HouldingSW, many scholars at home and abroad have done a lot of research in this field, and have proposed many 3D data models and modeling methods for describing 3D geological objects to solve the problem of expressing 3D geological objects. The 3D geological modeling methods can be mainly divided into three types based on different expression methods: modeling methods based on surface model, v...

AI Technical Summary

Problems solved by technology

Although the modeling method based on the surface model can well express the shape of the geological body, such as: terrain surface, stratum interface, fault, etc., it has the advantages of simple structure, easy display and update, etc., but it cannot express the internal attribute information of the geological body. Disadvantages for spatial analysis

Although the modeling method based on the volume model can well express the internal attribute information of the geological body and has the advantage of being easy to perform spatial analysis, it has problems such as slow calculation speed and large storage space when the modeling accuracy is high.

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