CN-122018036-A - Sandstone uranium deposit exploration method, device, equipment and system

CN122018036ACN 122018036 ACN122018036 ACN 122018036ACN-122018036-A

Abstract

The invention discloses a sandstone type uranium deposit exploration method, device, equipment and system, and relates to the technical field of geological exploration. According to the invention, geological data of a GIS analysis target area is used for screening sampling points of an ore-forming favorable target area, sampling sample samples are collected and are subjected to coupling analysis to obtain a surface uranium abnormal area, a three-dimensional geological-geophysical model of the surface uranium abnormal area is integrally constructed through a data inversion method, drilling points are deployed based on the model, core samples, stratum water samples and gas samples of the drilling points are collected, a three-dimensional uranium mineralization physical model is constructed according to a multivariate data fusion technology, and sandstone-type uranium ore content of the target area is confirmed according to the three-dimensional uranium mineralization physical model by using a geological block segment method. According to the invention, by constructing a deep geological-geophysical model, the integrated uranium deposit exploration from the earth surface to the deep and from macroscopic to microscopic is realized, and the exploration precision and the exploration efficiency of sandstone uranium deposit are improved.

Inventors

JIANG XIAOJIE
XI HONG
Shan Pengbing
LU CHAO
WANG LONGHUI
YANG YONG

Assignees

核工业二0八大队

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. The sandstone uranium deposit exploration method is characterized by comprising the following steps of: s1, collecting and screening, namely acquiring geological data of a target area, and screening sampling points of an ore-forming favorable target area by using a GIS analysis technology; S2, sample detection, namely collecting soil samples of sampling points of an ore-forming favorable target area, and detecting the soil samples to obtain geochemical measurement data and radioactive gamma energy spectrum measurement data; S3, coupling analysis is carried out on geochemical measurement data and radioactive gamma energy spectrum measurement data to obtain a surface uranium abnormal region, wherein the surface uranium abnormal region is an overlapping region of a uranium content abnormal region and a gamma energy spectrum uranium abnormal region obtained through coupling analysis; S4, inversion modeling, namely collecting stratum lithology data, reservoir distribution and construction data of different depths of the surface uranium abnormal region, and integrating and constructing a three-dimensional geological-geophysical model of the surface uranium abnormal region through a data inversion method; S5, targeted sampling, namely deploying drilling points based on a three-dimensional geological-geophysical model, collecting a core sample, a stratum water sample and a gas sample of the drilling points according to a continuous coring and measurement while drilling technology, analyzing the core sample to obtain nano uranium mineral phase identification characterization data, obtaining mineralization cause and fluid migration rule data by geochemical tracing analysis on the stratum water sample, and analyzing the gas sample to obtain sample analysis data; S6, integrating geochemical measurement data, radioactive gamma energy spectrum measurement data, sample analysis data, nano uranium mineral phase identification characterization data and mineralization cause and fluid migration rule data based on a multi-source data fusion technology to construct a three-dimensional uranium mineralization physical model; and S7, a resource estimation step, namely determining the sandstone type uranium deposit content in the target area by using a geological block segment method according to the three-dimensional uranium mineralization physical model.
2. The method for sandstone-type uranium deposit exploration according to claim 1, wherein the geological data of the target region in S1 includes regional basis geological map data, basin evolution and deposition structure data, ore-bearing building feature data, structural development feature data, hydrogeological data and physical and chemical exploration basis data.
3. A sandstone-type uranium deposit exploration method according to claim 1, wherein in S4: The acquisition modes of formation lithology data and reservoir distribution and construction data of different depths of the surface uranium abnormal region comprise seismic exploration, controllable source audio magnetotelluric sounding and borehole geophysical logging; the data inversion method adopts a three-dimensional magneto-optical joint inversion algorithm based on finite elements.
4. The sandstone-type uranium deposit exploration method according to claim 1, wherein the nano uranium deposit phase identification and characterization data in S5 comprises phase types, crystal structures and embedded features of uranium deposit.
5. A sandstone uranium deposit exploration method according to claim 1, wherein the geochemical tracing analysis in S5 specifically includes: And carrying out tracer analysis on uranium isotopes in the formation water by utilizing an isotope tracing technology to obtain mineralization cause and fluid migration rule data, wherein the mineralization cause and fluid migration rule data comprises mineralization fluid source data and mineralization fluid migration path data.
6. The sandstone uranium deposit exploration method according to claim 1, wherein in S6, a three-dimensional uranium mineralization physical model is built based on Petrel software, and the three-dimensional uranium mineralization physical model comprises mineralization body three-dimensional morphology, grade distribution and thickness change characteristics.
7. A sandstone-type uranium deposit exploration device operating according to any one of claims 1 to 6, and comprising a soil collection assembly, a slide rail, a slide carriage and a drive member, the soil collection assembly comprising a trolley and a controller; the trolley is fixedly provided with a sliding rail, the sliding rail is provided with a sliding support capable of sliding, the sliding support is fixedly provided with a driving piece, and the controller is used for controlling an output shaft of the driving piece to rotate.
8. A sandstone uranium ore exploration device according to claim 7, wherein the soil collection assembly further includes a sleeve, a shaft, a thrust bit and helical blades; The output shaft of the driving piece is fixedly connected with one end of a rotating central shaft of the rotating shaft, the other end of the rotating central shaft of the rotating shaft is coaxially and fixedly connected with a propelling drill bit, the rotating shaft is coaxially and fixedly connected with a helical blade, a sleeve is sleeved outside the rotating shaft, one end of the sleeve is detachably connected with the driving piece, and the inner wall of the sleeve is in clearance fit with the outer edge of the helical blade.
9. The sandstone uranium deposit exploration device is characterized by comprising a processor, a memory and a computer program, wherein the processor is electrically connected with the memory; a computer program for performing a sandstone-type uranium deposit investigation method as claimed in any one of claims 1 to 6; A memory for storing a computer program; and a processor for calling and executing the computer program in the memory.
10. A sandstone type uranium deposit investigation system applied to realizing the sandstone type uranium deposit investigation method according to any one of claims 1 to 6, which is characterized by comprising a collection and screening module, a sample detection module, a coupling analysis module, an inversion modeling module, a targeting sampling module, an integration modeling module and a resource estimation module which are sequentially connected; The collecting and screening module is used for acquiring geological data of a target area and screening sampling points of an ore-forming favorable target area by utilizing a GIS analysis technology; The sample detection module is used for collecting soil samples of sampling points of the ore-forming favorable target area and detecting the soil samples to obtain geochemical measurement data and radioactive gamma energy spectrum measurement data; The system comprises a coupling analysis module, a surface uranium abnormal region, a gamma energy spectrum analysis module and a gamma energy spectrum analysis module, wherein the coupling analysis module is used for carrying out coupling analysis on geochemical measurement data and radioactive gamma energy spectrum measurement data to obtain the surface uranium abnormal region; the inversion modeling module is used for acquiring stratum lithology data, reservoir distribution and construction data of different depths of the surface uranium abnormal region and integrating and constructing a three-dimensional geological-geophysical model of the surface uranium abnormal region through a data inversion method; the targeted sampling module is used for deploying drilling points based on a three-dimensional geological-geophysical model, collecting a core sample, a stratum water sample and a gas sample of the drilling points according to a continuous coring and measurement while drilling technology, analyzing the core sample to obtain nano uranium mineral phase identification characterization data, obtaining mineralization cause and fluid migration rule data by utilizing geochemistry tracing analysis on the stratum water sample, and analyzing the gas sample to obtain sample analysis data; The integration modeling module is used for integrating geochemical measurement data, radioactive gamma energy spectrum measurement data, sample analysis data, nano uranium mineral phase identification characterization data and mineralization cause and fluid migration rule data based on a multi-source data fusion technology to construct a three-dimensional uranium mineralization physical model; and the resource estimation module is used for confirming the sandstone-type uranium deposit content in the target area by using a geological block segment method according to the three-dimensional uranium mineralization physical model.

Description

Sandstone uranium deposit exploration method, device, equipment and system Technical Field The invention relates to the technical field of geological exploration, in particular to a sandstone uranium deposit exploration method, device, equipment and system. Background In the field of sandstone uranium mining, traditional investigation methods rely mainly on earth or near earth surface soil sampling and geophysical measurements (e.g., radioactive gamma spectroscopy) to delineate abnormal regions. At present, surface chemical detection and geophysical prospecting scanning are generally adopted in the industry, and relatively sparse drilling holes are deployed for verification and deep detection after target areas are defined. Research conclusion of related paper (three-dimensional geological modeling application in the exploration of sandstone-type uranium deposit in an Erdos basin (uranium deposit geology, 2022 years) related to uranium deposit exploration indicates that the traditional two-dimensional exploration means are difficult to effectively describe the spatial morphology of deep ore bodies and the relation between the deep ore bodies and ore control structures, and great uncertainty exists in prediction of the deep uranium ore bodies, so that drilling deployment has strong experience and blindness. In combination with the actual detection scene, the data of each stage in the two-dimensional investigation are often not smooth, and a unified geological model from microscopic to macroscopic and from the earth surface to deep is difficult to construct. Based on the above-mentioned present situation of sandstone-type uranium mine exploration, the basic defect of the existing sandstone-type uranium mine exploration technology is that the exploration capability of deep three-dimensional geological structure and mineralization space distribution is insufficient, and a technical system for effectively fusing multi-scale and multi-source data and carrying out three-dimensional visual modeling and quantitative prediction is lacking, which results in the problems of low exploration efficiency, limited exploration and low exploration success rate. Therefore, there is a need to propose a new and systematic sandstone-type uranium deposit exploration solution to address the above-mentioned problems. Disclosure of Invention In view of the above, the invention provides a sandstone-type uranium deposit exploration method, device, equipment and system, which form a set of data-driven multi-scale collaborative exploration system by constructing a deep geological-geophysical model, realize the integrated sandstone-type uranium deposit exploration from the earth surface to the deep and from macroscopic to microscopic, and improve the deep exploration precision of the sandstone-type uranium deposit and the exploration efficiency of the sandstone-type uranium deposit. In order to achieve the above purpose, the present invention adopts the following technical scheme: the sandstone type uranium deposit exploration method comprises the following steps of: s1, collecting and screening, namely acquiring geological data of a target area, and screening sampling points of an ore-forming favorable target area by using a GIS analysis technology; S2, sample detection, namely collecting soil samples of sampling points of an ore-forming favorable target area, and detecting the soil samples to obtain geochemical measurement data and radioactive gamma energy spectrum measurement data; S3, coupling analysis is carried out on geochemical measurement data and radioactive gamma energy spectrum measurement data to obtain a surface uranium abnormal region, wherein the surface uranium abnormal region is an overlapping region of a uranium content abnormal region and a gamma energy spectrum uranium abnormal region obtained through coupling analysis; S4, inversion modeling, namely collecting stratum lithology data, reservoir distribution and construction data of different depths of the surface uranium abnormal region, and integrating and constructing a three-dimensional geological-geophysical model of the surface uranium abnormal region through a data inversion method; S5, targeted sampling, namely deploying drilling points based on a three-dimensional geological-geophysical model, collecting a core sample, a stratum water sample and a gas sample of the drilling points according to a continuous coring and measurement while drilling technology, analyzing the core sample to obtain nano uranium mineral phase identification characterization data, obtaining mineralization cause and fluid migration rule data by geochemical tracing analysis on the stratum water sample, and analyzing the gas sample to obtain sample analysis data; S6, integrating geochemical measurement data, radioactive gamma energy spectrum measurement data, sample analysis data, nano uranium mineral phase identification characterization data and mineralization cause and fluid migration r