Mineralizing abnormal extraction method based on multifractal Krige method

Abstract

The invention discloses a mineralizing abnormal extraction method based on a multifractal Krige method. The mineralizing abnormal extraction method is characterized by comprising the following steps of: performing the inspection of normal distribution on an exploration geochemical data set to be analyzed, calculating an experimental variance function value for the data set which submits to the normal distribution, and fitting the experimental variance function value by a theoretical variance function model to acquire relevant parameters in the theoretical variance function model; and solving an abnormal lower limit value effectively according to a multifractal Krige interpolation result on the basis of establishing local high-value information and highlighting weak anomaly to acquire a reliable mineralizing abnormal area for prospecting and exploration.

Description

technical field [0001] The present invention relates to a method for extracting mineralization anomalies based on multi-dimensional fractal Kriging method, more specifically, through multi-dimensional fractal Kriging method analysis on exploration geochemical data, and then extracting geochemical mineralization anomaly regions, so as to provide Accurately delineate the exploration target area to provide a basis. Background technique [0002] Exploration geochemical methods are an important means of mineral exploration. Through the analysis of primary and secondary media samples such as rocks, water system sediments, water, and soil, it is possible to effectively investigate and study regional geochemical backgrounds and anomalies, thereby providing a basis for mineral resources. Exploration and environmental assessment play an important guiding and supporting role. In the anomaly identification of the geochemical field of geochemical sampling data, in order to study the spa...

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Problems solved by technology

Therefore, the uncertain fractal valuation scale ε directly affects the extraction effect of mineralization anomalies

[0009] In addition, the calculation method of the abnormal lower limit in the current geochemical exploration standards (average and 2 times the standard deviation σ) is a calculation method based on normally distributed data. This method has great limitations, and it is difficult to process soil geochemical data in mining areas that obviously have strong variability and are non-normally distributed.

Since the multi-dimensional fractal method performs multi-fractal correction on the original data, it is more difficult to identify the anomalous area of ​​mineralization by traditional methods

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