Method and device for constructing parameterized three-dimensional model of fold structure

Abstract

The invention discloses a parameterized three-dimensional model construction method and device of a wrinkle structure, and the method comprises the steps: (1) obtaining wrinkle parameters set by a user, and forming a wrinkle hub parameter set A, a wrinkle element parameter set F and a stratum thickness set S; (2) based on the fold element parameter set F, generating a reference stratum boundary sl0 of a fold middle section, and storing the reference stratum boundary sl0 into a stratum boundary set SL; (3) according to the stratum thickness set S and the reference stratum boundary line sl0, generating a residual stratum boundary line of a middle section according to a wrinkled stratum arrangement rule, and storing the residual stratum boundary line into a stratum boundary line set SL; (4) converting the stratum boundary line set SL of the middle section into a middle section scmid; (5) on the basis of the middle section scmid and the wrinkle hub parameter set A, generating a section set SC of the wrinkles in the hub direction through affine transformation processing; and (6) based on the section set SC, generating a symbolized wrinkle three-dimensional model through a Morphing interpolation algorithm. The method is higher in efficiency and flexibility.

Description

technical field [0001] The invention relates to geographic information technology, in particular to a method and device for constructing a parametric three-dimensional model of a fold structure. Background technique [0002] Folding is the corrugated bending phenomenon of layered rocks in the crust due to the action of compressive force. Fold structure is a basic geological structure type, and its 3D modeling and symbolic expression are both crucial contents. However, most of the current 3D modeling methods for fold structures are non-parametric modeling methods that rely on boreholes or measured sections, which not only have a high dependence on geological data, but also have a limited scope of application and low modeling efficiency. On the other hand, the current symbolic expression of fold structures is mostly limited to the two-dimensional level, which is difficult to meet the geological symbol requirements in the three-dimensional geological model. SUMMARY OF THE IN...

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Problems solved by technology

However, most of the current 3D modeling methods for fold structures are non-parametric modeling methods that rely on boreholes or measured profiles, which not only have a high dependence on geological data, but also have a limited scope of application and low modeling efficiency; On the other hand, the current symbolic expression of fold structures is mostly limited to the two-dimensional layer, which is difficult to meet the geological symbol requirements in the three-dimensional geological model

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