Multi-source geological data coupling modeling method based on drill holes and complex geological sections

Abstract

The invention relates to the technical field of geological modeling, in particular to a multi-source geological data coupling modeling method based on drill holes and complex geological sections, which is characterized by comprising the following steps: S1, modeling data preparation: performing data standardization processing on modeling data to generate three-dimensional data, and performing dataconsistency processing; S2, constructing a fault surface: determining a three-dimensional space form of the fault surface, and generating a three-dimensional fault surface; S3, constructing a groundlevel: generating a ground surface according to the ground surface elevation data; sequentially constructing complete stratum surfaces of all the stratums from top to bottom according to the corresponding relation of the stratums; S4, ground level intersection processing: performing curved surface intersection processing, and segmenting a ground level according to an intersection line; after the segmentation is completed, removing surplus stratum surfaces to obtain stratum surfaces conforming to stratum distribution; and S5, constructing geologic body. According to the method, the modeling result is more consistent with the actual situation, and meanwhile, the modeling efficiency of the complex geologic body is improved.

Description

[0001] The invention relates to the technical field of geological modeling, in particular to a multi-source geological data coupling modeling method based on boreholes and complex geological sections. Background technique [0002] A geological profile is a cross-section obtained along a certain direction on the surface, with an imaginary vertical plane tangent to the topography, and a map drawn at a certain scale to record and reveal the relationship between the topography and the internal structure of the section in a certain direction , is one of the important geological maps. It can be compiled through on-site visual inspection, instrumental measurement or geological maps. The main content of the geological section map includes the direction of the section, the topography and the lithology, thickness, age and occurrence of the stratum. It can show the shape of folds, the nature of faults, the shape of igneous rock bodies and ore bodies; it can also indicate their positions ...

AI Technical Summary

Problems solved by technology

[0004] The current geological body modeling mainly includes fully automatic modeling based on controlled drilling and semi-automatic interactive modeling methods based on sections. The automatic modeling of drilling is fast, but the algorithm has a large time and space complexity, and drilling cannot It can well reflect the spatial distribution of complex structures such as underground folds and fractures, and it is easy to produce multiple solutions. The effect of automatic interpolation is sometimes far from the actual situation or the result of manual interpretation

The semi-automatic interactive modeling based on the section can solve the construction problem of complex geological structures, and the modeling results conform to the geological understanding of professionals, but the modeling process is cumbersome and complicated, requiring a lot of manpower, material resources and time investment, and the efficiency is low, and the effect of the model construction has a negative impact on Modelers rely on their geoscience knowledge, GIS topology knowledge, spatial imagination ability, and software operation ability, which is not conducive to large-scale modeling and later model modification and update

[0005] The demand for geological modeling is developing in wide areas and deep areas, and the geological structure is more complex and diverse. The current automatic drilling modeling suitable for layered geological bodies and interactive modeling of complex geological body sections can no longer meet the needs well.

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