Method for cutting block model of three-dimensional ore body with attribute to generate two-dimensional profile map

Abstract

The invention relates to a method for cutting a block model of a three-dimensional ore body with an attribute to generate a two-dimensional profile map. The method comprises steps of: establishing a bounding box model according to the azimuth angle of the ore body and the maximum coordinate value and the minimum coordinate value of the ore body in a three-dimensional space; on the basis of the bounding box model, filling the ore body by using a cell block and a secondary graded cell block on the premise of a block coefficient method while using the block model as a constraint condition; performing Kriging interpolation on the block model to compute reserves; selecting the cutting direction in order to cut the block model subjected to the Kriging interpolation; and automatically drawing and outputting the profile map in a two-dimensional program. The method utilizes multiple new ways and new techniques including cell block and secondary graded cell block mixed filling bounding box technology, Kriging interpolation technology, block cutting technology, and fast two-dimensional reserves profile map forming technology so as to rapidly and highly efficiently cut the block, generate a two-dimensional reserves profile map, and achieve linked switching of two-dimensional and three-dimensional data.

Description

technical field [0001] The invention relates to a method for generating a two-dimensional section diagram by cutting a block model of a three-dimensional ore body with attributes, and belongs to the field of geological structure display. Background technique [0002] Cutting analysis is a perspective analysis method to understand the internal structure of the 3D model through the cutting surface. The cutting analysis can be regarded as that the operator cuts the space object with a knife and observes the internal structure of the 3D object presented on the cutting surface through a specific expression. Object selection and feature recognition are carried out on the parts of interest according to the needs. The two-dimensional profile of DEM is the original application of this method. Plane cutting technology can link 2D and 3D together, the information displayed on the 2D section can be associated with the 3D model, and the attributes in the 3D model can also be displayed on...

AI Technical Summary

Problems solved by technology

The intersection-based cutting algorithm needs to test more voxels and save the generated polygon data, which consumes a lot of time and space, but the generated image quality is good

Therefore, this method is suitable for the situation where the amount of volume data is small, the distance between the grid points of the volume data is large, and the display area is also large; while the section display algorithm based on interpolation consumes less space and is faster, and realizes Convenient, but slightly less accurate

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