Method for extracting and quantitatively estimating hyperspectra of drilling rock core altered mineral

A technique for drilling cores and altering minerals, applied in calculations, special data processing applications, instruments, etc., can solve the problems of high cost, impact analysis and conclusions, time-consuming and labor-intensive problems, and achieve high accuracy, fast extraction speed, Mineral Information Rich Effect

Active Publication Date: 2017-05-17
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0003] At present, the traditional research method of drilling core alteration minerals is mainly realized through the cataloging of drilling cores by geologists. At the same time, the cores are sampled and then sent for chemical analysis. This method is time-consuming, laborious and expensive. bigger
At the same time, due to the differences in knowledge reserve and experience of different geological recorders, it is easy to get different results, which will affect the next analysis and conclusion

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  • Method for extracting and quantitatively estimating hyperspectra of drilling rock core altered mineral
  • Method for extracting and quantitatively estimating hyperspectra of drilling rock core altered mineral

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Embodiment Construction

[0042] A hyperspectral extraction and quantitative estimation method for drill core altered minerals according to the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0043] like figure 1 As shown, a hyperspectral extraction and quantitative estimation method of drill core alteration minerals of the present invention comprises the following steps:

[0044] Step 1. Acquire drill core hyperspectral image data

[0045] According to the unified data acquisition standard, use Hyspex or other similar ground hyperspectral sensor equipment to acquire drill core hyperspectral image data. During the data collection process, the standard plate data is collected synchronously at regular intervals, which is used in step 2 to calculate the reflectance spectrum of the core hyperspectral image data.

[0046] As a preferred embodiment, before data collection, arrange the rock cores in the core box so that the distribution direc...

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Abstract

The invention belongs to the technical field of earth sciences, and particularly relates to a method for extracting and quantitatively estimating hyperspectra of a drilling rock core altered mineral. According to the method, the advantages of a ground imaging hyperspectral data spectral resolution and the characteristics of atlas oneness are utilized, by collecting the drilling rock core hyperspectral image data, the altered mineral which has a close relation with hydatogenesis is recognized and extracted, and the space zoning of the altered mineral in the drilling depth direction is quantitatively estimated at the same time. According to the method for extracting and quantitatively estimating the hyperspectra of the drilling rock core altered mineral, the altered mineral information which has a close relation with a deep hydrothermal ore-forming can be accurately extracted, the growth of the altered mineral in the rock core can be visually manifested, the quantitative expression of the altered mineral in the drilling scale can be achieved, and the method for extracting and quantitatively estimating the hyperspectra of the drilling rock core altered mineral provides important practical value for the deep ore finding and prospecting.

Description

technical field [0001] The invention belongs to the technical field of earth sciences, and in particular relates to a method for hyperspectral extraction and quantitative estimation of altered minerals in drilling cores. Background technique [0002] Deep ore prospecting is an urgent prospecting direction. Drill cores are an important carrier for studying deep ore-forming environments. Different types of altered minerals are important identification marks and favorable factors for ore-forming hydrothermal deposits. Unlike the surface or near the surface, most metamorphic minerals developed in deep rocks are of hydrothermal origin rather than weathering origin. Therefore, how to accurately identify and extract various altered minerals closely related to mineralization developed in drill cores It is of great practical significance for deep ore prospecting to find out their zoning status in deep space. [0003] At present, the traditional research method of drilling core alter...

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 张川叶发旺徐清俊
Owner BEIJING RES INST OF URANIUM GEOLOGY
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