Hydrothermal uranium mine regional resource prediction and evaluation method

Abstract

The embodiment of the invention relates to the technical field of exploration or detection by adopting comprehensive technical means, in particular to a hydrothermal uranium mine area resource prediction and evaluation method. According to the hydrothermal uranium ore area resource prediction and evaluation method, the geological cause of hydrothermal uranium ore is firstly judged, then the favorable mineralization area is delineated, and then the attribute of uranium mineralization is judged, so that the favorable mineralization part is determined from the favorable mineralization area. Compared with the prior art, the method has the advantages that the blindness of resource prediction and evaluation of the hydrothermal uranium ore region is reduced, the evaluation efficiency is improved, furthermore, different weights are given to the attributes of uranium mineralization, the effects of different attributes in evaluation are considered, and the evaluation precision is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of exploration or detection, and in particular to a method for predicting and evaluating resources of a hydrothermal uranium deposit region. BACKGROUND

[0002] The statements herein are merely provided to give a background of the present application and are not necessarily prior art.

[0003] Uranium is an important resource and has a wide range of applications in the field of nuclear technology. Generally, uranium can be obtained by mining uranium deposits.

[0004] Before mining a uranium deposit, the uranium content and the quality of the contained uranium of the uranium deposit need to be explored or detected. However, since uranium deposits have different types, the exploration rules or discrimination methods for different types of ore bodies may not be applicable to other ore bodies, or may cause deviations in the judgment results when applied. SUMMARY

[0005] In the following, a brief summary of the present application is given to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an exhaustive overview of the present application. It is not intended to identify key or important parts of the present application nor is it intended to limit the scope of the present application. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

[0006] Embodiments of the present application provide a method for predicting and evaluating resources of a hydrothermal uranium deposit region, which comprises the following steps: S1: obtaining geological data of the hydrothermal uranium deposit region; S2: determining the geological genesis of the hydrothermal uranium deposit region according to the geological data; S3: determining that the hydrothermal uranium deposit region is a uranium mineralization favorable region according to the geological genesis; S4: obtaining the Bouguer gravity and magnetic field of the uranium mineralization favorable region; S5: determining a uranium mineralization favorable site in the uranium mineralization favorable region according to the Bouguer gravity and magnetic field; S6: obtaining samples in the uranium mineralization favorable site and analyzing a plurality of properties related to uranium mineralization in the samples; S7: setting different weights for different properties related to uranium mineralization and updating the analysis results of the plurality of properties in S6; S8: determining the status of the resources of the hydrothermal uranium deposit region according to the updated results of the analysis results.

[0007] In some embodiments, in S6, the plurality of properties related to uranium mineralization includes uranium mineralization indicator elements, ore-forming paleotemperature, and ore-forming pressure.

[0008] In some embodiments, in the step S6, further comprising the following steps: S61: performing geochemical analysis on the sample to determine elements in the sample; S62: determining that the sample comprises uranium ore-forming indicator elements according to the elements in the sample.

[0009] In some embodiments, in the step S6, further comprising the following steps: S63: selecting an inclusion sample from the sample, S64: performing analysis on the inclusion sample to determine ore-forming paleotemperature and ore-forming pressure; S65: determining that the region where the sample is located has good ore-forming conditions and mineral migration ability according to the ore-forming paleotemperature and the ore-forming pressure.

[0010] In some embodiments, in the step S3, the geological genesis comprises a geological fracture zone and volcanic activity of the hydrothermal uranium ore region.

[0011] In some embodiments, the five or more uranium ore-forming indicator elements comprise U, Th, P, Cu, Fe, and Zn.

[0012] Embodiments of the present application provide a hydrothermal uranium ore region resource prediction and evaluation method, which determines the geological genesis of the hydrothermal uranium ore, then delineates a favorable ore-forming region, and then determines the attributes of the uranium mineralization, so as to determine the favorable ore-forming part from the favorable ore-forming region. The method reduces the blindness of the hydrothermal uranium ore region resource prediction and evaluation, improves the evaluation efficiency, and further, by assigning different weights to the attributes of the uranium mineralization, the effects of different attributes in the evaluation are considered, and the evaluation accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to further illustrate the above and other advantages and features of the present application, specific embodiments of the present application are further described in detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are incorporated in the specification and form a part of the specification. Elements having the same function and structure are denoted by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.

[0014] Figure 1 is a flowchart of a hydrothermal uranium ore region resource prediction and evaluation method provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0015] The exemplary embodiments of this application are described herein with reference to the accompanying drawings. For the purpose of clarity and a complete understanding of the application, the drawings include diagrams of exemplary embodiments of the application. Additional features and advantages of the application will be apparent from the detailed description, which, taken in conjunction with the accompanying drawings, where like reference characters refer to like parts, will make apparent to those skilled in the art that the application is capable of other embodiments and of being practiced and carried out in various ways. Examples of specific implementations are described to fulfill this disclosure, and it will be apparent to those skilled in the art that various modifications can be made within the scope of the present application.

[0016] It is also to be understood that the application will be described herein in terms of preferred embodiments and specific examples. It is to be understood that this manner of describing the application is only to be used for the purposes of the present disclosure, and is not intended to limit the scope of the application. Furthermore, the purpose of the use of the terms "include", "includes", "including", "have", "has", "having", "contain", "contains", "containing", "comprise", "comprises", "comprising" or the like, is to provide an inclusive scope such that the description and examples are intended to be taken as non-exhaustive or as reciting only preferred embodiments. Other embodiments can readily be derived from the description and examples without departing from the scope of the present application.

[0017] The following disclosure provides various different embodiments or examples for implementing the present application. In order to simplify the present disclosure, the components and methods of specific examples are described below. Of course, they are merely examples and the purpose is not to limit the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0018] The inventors of the present application found that, due to different types of uranium ore, the exploration rules or discrimination methods for different types of ore bodies may not be applicable to other ore bodies, or when applicable, may cause deviation in the judgment result. For example, liquid uranium type uranium ore is a new type of uranium ore, and its ore-forming regularity is different from that of other types of uranium ore. In the ore-forming process, a variety of geological factors interact with each other, and the relationship between the favorable ore-forming indicator attributes is relatively complex, and a single factor cannot accurately and effectively evaluate the liquid uranium type uranium ore regional resources.

[0019] The embodiment of the present application provides a hydrothermal type uranium mine regional resource prediction and evaluation method, which comprises the following steps: S1: obtaining geological data of a hydrothermal type uranium mine region; S2: determining the geological genesis of the hydrothermal type uranium mine region according to the geological data; S3: determining that the hydrothermal type uranium mine region is a uranium mineralization favorable region according to the geological genesis; S4: obtaining the Bouguer gravity and the magnetic field of the uranium mineralization favorable region; S5: determining a uranium mineralization favorable section in the uranium mineralization favorable region according to the Bouguer gravity and the magnetic field; S6: obtaining samples in the uranium mineralization favorable section, and analyzing a plurality of attributes related to uranium mineralization in the samples; S7: setting different weights for different attributes related to the uranium mineralization, and updating the analysis results of the plurality of attributes in the S6 step according to the weights; and S8: determining the condition of the hydrothermal type uranium mine regional resource according to the results after the updating of the analysis results.

[0020] The embodiment of the present application provides a hydrothermal type uranium mine regional resource prediction and evaluation method, which comprises the following steps: S1: obtaining geological data of a hydrothermal type uranium mine region; S2: determining the geological genesis of the hydrothermal type uranium mine region according to the geological data; S3: determining that the hydrothermal type uranium mine region is a uranium mineralization favorable region according to the geological genesis; S4: obtaining the Bouguer gravity and the magnetic field of the uranium mineralization favorable region; S5: determining a uranium mineralization favorable section in the uranium mineralization favorable region according to the Bouguer gravity and the magnetic field; S6: obtaining samples in the uranium mineralization favorable section, and analyzing a plurality of attributes related to uranium mineralization in the samples; S7: setting different weights for different attributes related to the uranium mineralization, and updating the analysis results of the plurality of attributes in the S6 step according to the weights; and S8: determining the condition of the hydrothermal type uranium mine regional resource according to the results after the updating of the analysis results.

[0021] In some embodiments, the geological data of the hydrothermal type uranium mine region can be obtained by studying historical geological information of the hydrothermal type uranium mine region, or by obtaining the geological data in a remote sensing image mode.

[0022] The geological data herein mainly focuses on the data related to the mineralization method of the hydrothermal type uranium mine, for example, fracture control and fracture red disc and the like. Generally, regional deep fracture control is an ore-controlling factor of large-scale uranium mines, and the superposition of multi-directional structures and the interaction of multi-angle crustal stress make it a favorable area for uranium ore prospecting; the parts with relatively strong magmatic and thermal activity are also uranium mineralization favorable regions, for example, the formation of the faulted red disc.

[0023] According to the method provided by the embodiment of the present application, if it is determined that the deep fracture control and the formation of the fracture red disc exist in the geological data of the hydrothermal type uranium mine region, it can be determined that the region is a uranium mineralization favorable region. Of course, the person skilled in the art can also determine other geological genesis to determine that it is a uranium mineralization favorable region.

[0024] In some embodiments, in the S6 step, the plurality of attributes related to the uranium mineralization include uranium mineralization indicator elements, mineralization ancient temperature and mineralization pressure.

[0025] In some embodiments, in the step S6, further comprising the following steps: S61: performing geochemical analysis on the sample to determine elements in the sample; S62: determining that the sample comprises uranium ore-forming indicator elements according to the elements in the sample.

[0026] In some embodiments, in the step S6, further comprising the following steps: S63: selecting an inclusion sample from the sample, S64: performing analysis on the inclusion sample to determine ore-forming paleotemperature and ore-forming pressure; S65: determining that the region where the sample is located has good ore-forming conditions and mineral migration ability according to the ore-forming paleotemperature and the ore-forming pressure.

[0027] In some embodiments, in the step S3, the geological genesis comprises a geological fracture zone and volcanic activity of the hydrothermal uranium ore region.

[0028] In some embodiments, the five or more uranium ore-forming indicator elements comprise U, Th, P, Cu, Fe, and Zn.

[0029] In some embodiments, the above-mentioned multiple uranium ore-forming properties generally have certain differences in their effects on determining ore-forming. For example, different combinations of ore-forming indicator elements or the number of ore-forming indicator elements can affect the importance of ore-forming indicator elements in determining ore-forming.

[0030] The inventors of the present application propose that the multiple properties related to uranium mineralization include uranium ore-forming indicator elements, ore-forming paleotemperature, and ore-forming pressure, and propose a standard value for each property, i.e., at the standard value, the determination of the ore-forming conditions of the known region by the property of the uranium mineralization is most consistent with the actual situation. Then, for an unknown ore-forming region, the value of the uranium mineralization index of the unknown ore-forming region can be obtained by measurement, and then the relative value between the value and the standard value can be obtained by comparison, and the influence degree of the property of the uranium mineralization on the unknown ore-forming region can be determined by the relative value.

[0031] The above-mentioned technical means are further illustrated below by way of example.

[0032] For example, if the highest temperature of the ore-forming paleotemperature is not lower than 600℃, the influence degree of the ore-forming paleotemperature on determining that the region is a hydrothermal uranium ore region is 100%, and then the highest temperature not lower than 600℃ is the standard value, if the highest temperature of the ore-forming paleotemperature of the sample of the actual measured region is not lower than 500℃, it can be considered that the influence degree of the ore-forming paleotemperature on determining that the region is a hydrothermal uranium ore region is 80% (the product of the ratio between the actual temperature and the standard value of the ore-forming temperature and 100%).

[0033] The calculation method of other uranium mineralization related attributes is similar, and through the above method, the measurement values of the uranium mineralization related attributes in different regions can be qualitatively analyzed, so that the analysis result is more consistent with the actual situation.

[0034] Based on the above determination principle, the person skilled in the art can set the actual value and the conversion method according to the mark value.

[0035] In some embodiments of the present application, different weights are given to each of the plurality of attributes of uranium mineralization, so that the final evaluation result comprehensively considers the plurality of attributes of uranium mineralization, and the above plurality of attributes are organically combined, so that the evaluation result is more consistent with the actual situation, and the evaluation accuracy is improved.

[0036] The above weight setting can be determined by the above attributes of the known uranium mineral area by the person skilled in the art, or can be determined according to experience, and further can be corrected according to the actual situation.

[0037] According to the method provided by the embodiments of the present application, the favorable ore-forming position determined can be drilled, and the sample obtained by drilling is analyzed to further verify the above method.

[0038] For the embodiments of the present application, it also needs to be explained that the embodiments and the features in the embodiments of the present application can be combined with each other to obtain new embodiments without conflict.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for predicting and evaluating regional resources of hydrothermal uranium deposits, characterized in that, The method includes the following steps: S1: Obtain geological data of the hydrothermal uranium deposit area; S2: Based on the geological data, determine the geological genesis of the hydrothermal uranium deposit area; S3: Based on the geological genesis, the hydrothermal uranium deposit area is determined to be a favorable area for uranium mineralization; S4: Obtain the Bouguer gravity and magnetic field of the favorable region for uranium mineralization; S5: Based on the Bouguer gravity and the magnetic field, determine the favorable uranium mineralization area within the favorable uranium mineralization region; S6: Obtain samples from the favorable uranium mineralization area and analyze multiple properties related to uranium mineralization in the samples; S7: Set different weights for the various attributes related to different uranium mineralization, and update the analysis results of the various attributes in step S6 with the weights; S8: Based on the updated results of the analysis, determine the resource status of the hydrothermal uranium deposit area.

2. The method according to claim 1, characterized in that, In step S6, the multiple properties related to uranium mineralization include uranium mineralization marker elements, paleotemperature of mineralization, and mineralization pressure.

3. The method according to claim 2, characterized in that, Step S6 also includes the following steps: S61: Perform geochemical analysis on the sample to determine the elements in the sample; S62: Based on the elements in the sample, determine that the sample includes the uranium mineralization marker element.

4. The method according to claim 2, characterized in that, Step S6 also includes the following steps: S63: Select an inclusion sample from the sample. S64: Analyze the inclusion sample to determine the paleo-mineralization temperature and the mineralization pressure; S65: Based on the ancient mineralization temperature and the mineralization pressure, it is determined that the area where the sample is located has good mineralization conditions and mineral migration ability.

5. The method according to claim 1, characterized in that, In step S3, the geological genesis includes geological fault zones and volcanic activity in the hydrothermal uranium deposit area.

6. The method according to claim 2, characterized in that, in, It includes five or more of the following uranium mineralization marker elements: U, Th, P, Cu, Fe, and Zn.

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