Method for selecting sandstone uranium mine dominant horizon

Abstract

The invention belongs to the field of uranium ore exploration, and particularly discloses a method for selecting a sandstone uranium ore dominant horizon. The method comprises the following steps: performing hyperspectral core scanning on a drilling core of a sandstone uranium ore deposit by using core hyperspectral scanning equipment; performing data inversion on the hyperspectral rock core scanning image to obtain ferric iron, organic matters, total clay content and kaolinite content; constructing a relation curve of the mineral content changing along with the depth by utilizing the data such as the ferric iron content obtained by inversion and combining the scanning depth; and selecting the dominant horizon of the sandstone uranium mine by using the constructed content change curve. According to the method, sample collection is not needed, and operation steps are simple; laboratory analysis does not need to be carried out, and the working efficiency is improved; the characteristic of high spectral quantization capability is fully utilized, and the result quantization level is high; and spectral data is easy to obtain, testing is cheap, and cost can be saved.

Description

Technical field [0001] The invention belongs to the field of uranium exploration, and specifically discloses a method for selecting the dominant layer of sandstone uranium deposits. Background technique [0002] Uranium is an important dual-use resource. The current focus of uranium exploration has shifted from hard rock type to sandstone type uranium deposits. Unlike traditional hard rock type uranium deposits, sandstone type uranium deposits are obviously controlled by strata. Mastering the favorable stratum of sandstone uranium deposits is of positive significance for guiding the exploration of sandstone uranium deposits. At present, researchers judge the favorable sand body layer mainly based on the sedimentary characteristics of the sand body, such as comprehensive consideration of the sedimentary sequence of the stratum sand body, sandstone grain size, sand body organic matter content, clay content, iron oxide composition and other factors. [0003] There are two shortcomi...

AI Technical Summary

Problems solved by technology

[0004] (1) Overly relying on empirical judgment, different researchers may come up with different evaluation standards due to their own reasons, resulting in a lack of uniformity in the final evaluation results, and poor comparability of results;

[0005] (2) Researchers need to carry out sample collection and laboratory chemical analysis when obtaining content and composition information, which is not only time-consuming and labor-intensive but also consumes a lot of money