Method for evaluating favorable sand of interlayer oxidation type uranium metallogenesis of superimposed basin

Abstract

The invention relates to the field of basic geology research of sandstone style uranium mine, in particular to a method for evaluating favorable sand of interlayer oxidation type uranium metallogenesis of a superimposed basin. The method specifically comprises the following steps of 1, determining control factors of favorable sand of interlayer oxidation type sandstone uranium metallogenesis of a large superimposed basin; 2, identifying the favorable sand based on a fuzzy mathematic method, and determining a development region of the favorable sand of the uranium metallogenesis; and 3, locating the favorable sand more accurately in the identified development region of the favorable sand of the step 2 by applying a sedimentology method. According to the method, the defects of qualitative description and a conventional single-factor exclusion method are made up for; a method process for quantitatively evaluating the favorable sand is established; evaluation indexes of the favorable sand of the metallogenesis are quantified; the purpose of converting qualitative description and single-factor evaluation of the favorable sand into multi-parameter comprehensive quantitative evaluation is achieved; and the development region of the favorable sand of the metallogenesis can be quickly selected out from a regional range.

Description

technical field [0001] The invention belongs to the field of basic geological research of sandstone-type uranium deposits, and in particular relates to a method for evaluating favorable sand bodies for ore-forming oxidized uranium interlayers in superimposed basins. Background technique [0002] With the increasing demand for uranium raw materials from the development of nuclear power and military industry in my country, coupled with breakthroughs in mining and smelting technology of in-situ leaching, sandstone-type uranium deposits have become an important type of uranium deposits at home and abroad. According to previous studies, we have realized that the characteristics of sedimentary sand bodies have an important impact on the migration and storage of uranium-bearing ore-forming solutions, as well as the precipitation and enrichment of uranium. Ore-forming has a positive control effect. Only the sedimentary sand bodies that are favorable to ore-forming are the basis for ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for evaluating favorable sand bodies of oxidized uranium ore-forming interlayers in superimposed basins, and to solve the weak practical applicability of identification technology for favorable sand bodies of uranium ore-forming interlayer oxidized sandstones in superimposed basins provide direction for the evaluation of favorable sand bodies in actual geological work

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