Non-structured triangular mesh gravity inversion method based on equivalent coplanar-function fitting

Abstract

The present application is suitable for the field of geophysical inversion technology, and provides a non-structure triangular grid gravity inversion method based on equivalent coplanar-function fitting, comprising the following steps: step S1, obtaining the Bouguer gravity anomaly; step S2, carrying out tetrahedron dissection on the underground space according to the terrain data; step S3, calculating the kernel function according to the equivalent principle; step S4, carrying out iterative inversion according to the function fitting method to obtain the density distribution of the underground space. The present application accelerates the kernel function calculation and iterative calculation process by combining the equivalent principle and the function fitting method, effectively improves the calculation efficiency, saves the calculation time, effectively solves the high-efficiency calculation problem of gravity inversion under the non-structure grid dissection of large data in the undulating terrain area, and is suitable for mineral exploration with high resolution in the undulating terrain area and scientific research on large-area deep complex structure.

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