Method for quickly inversing spatial position of underground geologic body

Abstract

The invention belongs to the geophysical gravity and magnetic data processing field and relates to a method for quickly inversing the spatial position of an underground geologic body. The method includes the following steps that: step 1, magnetic measurement data are obtained; step 2, measuring point anomaly Delta T values are obtained; step 3, gridding processing is performed on the measuring point anomaly Delta T values; step 4, a reduction-to-pole anomaly Delta T value grid and an X-direction, Y-direction and Z-direction derivative grid are obtained; step 5, the grids are segmented; step 6, Euler solutions in small grids are obtained; step 7, a small grid Euler solution set is extracted; and step 8, a final interpretation result map is obtained. With the method provided by the technical schemes of the present invention adopted, inversion speculation can be performed on the underground geologic body, so that the actual geological characteristics of the underground geologic body can be reflected, the distribution law of the underground geological body can be effectively evaluated, and therefore, underground mineral resources can be rapidly and accurately explored. The method is of great significance for geological prospecting work.

Description

technical field [0001] The invention belongs to the field of geophysical gravity and magnetic data processing, and in particular relates to a method for rapidly retrieving the spatial position of an underground geological body. Background technique [0002] In the field of geophysical gravity and magnetic exploration, how to accurately infer the shape, spatial position and distribution of underground geological bodies in the processing and interpretation of potential field data is often a difficult point in geophysical exploration. Conventional gravity and magnetic anomaly automatic inversion techniques such as the Euler deconvolution method can automatically or semi-automatically determine the location of the field source, but the selection of the structural index has a greater impact on the final inversion results, and in areas with complex geological structures, a fixed Constructing indices to carry out inversion calculations cannot accurately calculate and simulate the f...

AI Technical Summary

Problems solved by technology

Conventional gravity and magnetic anomaly automatic inversion techniques such as the Euler deconvolution method can automatically or semi-automatically determine the location of the field source, but the selection of the structural index has a greater impact on the final inversion results, and in regions with complex geological structures, a fixed Constructing indices to perform inversion calculations cannot accurately calculate and simulate source shapes and spatial positions in each sub-region, which directly affects the accuracy of interpretation results

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