162 results about "Uranium deposit" patented technology

A method for predicting in-situ leaching effects of sandstone-type uranium mining deposits after blasting is provided, which comprises: based on a finite element analysis platform, establishing an HJC rock-blasting constitutive model, and carrying out a blasting numerical simulation; calibrating a cloud map of blasting crack damage by using a Kriging interpolation algorithm; establishing a COMSOL multiphysics model; establishing a coupling interface between the COMSOL multiphysics model and PHREEQC based on MATLAB, and optimizing a cycle duration and a time step; performing a geochemical reaction calculation and saving results, running COMSOL files, and inputting the results of geochemical reaction calculation into PHREEQC to obtain a dynamic cyclic iterative simulation; dynamically correcting migration coefficients of uranyl complexes by integrating an LSTM neural network, and stopping the cycle to output multi-scale dynamic simulation results of migration of uranium.

The invention relates to a quantitative evaluation method for the occurrence state of rhenium in sandstone-type uranium deposit, and the method comprises the steps: providing a to-be-evaluated sandstone-type uranium deposit, and making a sample wafer; analyzing the types and distribution conditions of minerals on the surface of the sample; carrying out EDS-SEM analysis on the sample wafer, outputting a back scattering image, further analyzing the mineral type and distribution condition on the surface of the sample wafer through the back scattering image, carrying out energy spectrum analysis on a bright white region in the back scattering image, obtaining the Re element content, and setting a region with the Re element content higher than 0.1% as a marked region; performing surface scanning energy spectrum analysis on the sample wafer to obtain an element spectrum diagram, and obtaining an Re element enrichment region; and quantitatively evaluating the occurrence state of rhenium according to the analyzed information. According to the method, firstly, the mineral type and the distribution condition of the surface of the uranium ore sample are analyzed, then the distribution condition of the Re element on the surface of the sample is analyzed, and the occurrence states of the Re element in different minerals can be known by comparing the two kinds of information one by one.

The invention discloses an energy-gathered ultrasonic scrubbing device and an argillaceous sandstone uranium deposit deep desliming system. The energy-gathered ultrasonic scrubbing device comprises a scrubbing barrel, a reverse stirring system, an energy-gathered ultrasonic vibrator and a slurry storage tank, the reverse stirring system is located in the scrubbing barrel and comprises a rotating shaft and at least four layers of reverse stirring blade structures arranged in the axial direction of the rotating shaft, each layer of reverse stirring blade structure comprises a plurality of blades arranged in the circumferential direction of the rotating shaft, and the inclination directions of the blades of every two adjacent layers of reverse stirring blade structures relative to the rotating shaft are opposite; the energy-gathered ultrasonic vibrator comprises an ultrasonic transduction device and an energy-gathered vibration conduction rod, the ultrasonic transduction device is fixed outside the scrubbing barrel, and the energy-gathered vibration conduction rod is connected with the ultrasonic transduction device and located inside the scrubbing barrel; and the discharge hole of the overflow slag discharge pipe of the scrubbing barrel directly guides the slurry to the slurry storage tank. According to the invention, mud-sand deep separation is realized under the combined action of multi-phase flow channel high-pressure scrubbing and low-frequency high-energy ultrasonic vibration, so that deep desliming of argillaceous sandstone uranium ore is realized.

The invention belongs to the technical field of sandstone-type uranium deposit mineralization prediction, and particularly relates to a sandstone-type uranium deposit comprehensive prediction method based on big data, which comprises the following steps: step 1, collecting and sorting data, and constructing a multivariate information database; 2, analyzing metallogenic characteristics and constructing a sample set; 3, developing and training a prediction model; and 4, packaging and applying the model. According to the method disclosed by the invention, the deep coupling of geological expert knowledge and a machine learning algorithm is realized through a full technical process of systematically integrating multi-source data fusion, multi-dimensional feature space construction, hybrid drive modeling and prediction function realization, so that the generalization ability of a sandstone type uranium mine prediction model is remarkably improved; the prediction normal form transformation from experience to quantitative decision making is realized, and a reproducible and verifiable technical solution is provided for optimization of the favorable metallogenic area of the sandstone type uranium deposit.

The invention provides a sandstone-type uranium deposit sedimentary facies identification method, system and device and a medium, and belongs to the technical field of sedimentary facies identification, and the method comprises the steps: obtaining sandstone-type uranium deposit sedimentary facies multi-source data; time-frequency domain feature data, texture feature and waveform feature data and element ratio feature and statistical feature data related to sedimentary facies in the sedimentary facies multi-source data are extracted; time sequence features, three-dimensional structure features and metallogenic environment features are extracted from the feature data and weighted fusion is carried out to obtain the sedimentary facies category recognition probability. Multi-dimensional information complementation is realized by combining logging, earthquake and geochemical data, covering vertical lithology change, three-dimensional sand body distribution and a sedimentary facies state in a redox environment scene, and the focusing capability and the recognition precision of the model are effectively improved.

The invention discloses a post-blasting sandstone type uranium mine in-situ leaching mining effect prediction method, and relates to the field of sandstone type uranium mine in-situ leaching mining effect numerical simulation, and the method comprises the steps: building an HJC rock blasting constitutive model based on a finite element analysis platform, and carrying out the blasting numerical simulation; calibrating the blasting crack damage nephogram through a Kriging interpolation algorithm; a COMSOL multi-physical field model is constructed; constructing a coupling interface of the COMSOL multi-physical field model and the PHREEQC based on MATLAB, and optimizing the cycle time and the time step length; performing geochemical reaction calculation and storage, running a COMSOL file at the same time, and inputting a geochemical reaction calculation result into PHREEQC to obtain dynamic loop iteration simulation; and through integration of the LSTM neural network, dynamically correcting the migration coefficient of the uranyl complex, carrying out circulation termination, and outputting a uranium migration multi-scale dynamic simulation result. According to the method, multi-scale dynamic simulation of uranium migration in the leaching agent injection process is realized, and the uranium migration prediction precision is improved.

The invention mainly belongs to the technical field of uranium deposit in-situ leaching mining, and particularly relates to a device and a method for independently preparing acid by a leaching mining unit of in-situ leaching uranium mining. In the current mining, the leaching liquid is uniformly prepared, so that the leaching liquid with the same acid concentration is added into mining areas in different leaching stages. The device is used for independently preparing acid for a single leaching unit and comprises a solution input device, a mixer and a solution output device, and the mixer is connected with the solution input device and the solution output device; the solution input device comprises a concentrated sulfuric acid pipeline and a liquid injection main pipeline, and the solution output device comprises a distributor and a shunting pipeline. According to the method, the concentration of concentrated sulfuric acid in a concentrated sulfuric acid pipeline is utilized to measure the concentration of concentrated sulfuric acid of adsorption tail liquid in a liquid injection main pipeline, and the flow of the concentrated sulfuric acid pipeline is calculated according to the concentration and flow of leaching liquid sulfuric acid required by a leaching unit. By adjusting the liquid injection main pipeline and the concentrated sulfuric acid pipeline electric adjusting valve, the reading of the concentrated sulfuric acid pipeline electromagnetic flowmeter is the same as the calculated value, so that accurate acid preparation is realized.

The invention belongs to the technical field of sandstone type uranium ore mineralization prediction, and particularly relates to a sample set construction method suitable for sandstone type uranium ore big data prediction, which comprises the following steps: a system collects and arranges geological-geophysical prospecting-geochemical prospecting-remote sensing data of a research area, extracts the geological, geophysical prospecting, geochemical prospecting and remote sensing data, and pre-processes the data; performing feature selection of a sample set by analyzing factors such as construction, magma activity, stratum and lithofacies paleogeography, geophysics, geochemistry and the like; integrating the selected sample feature data, and marking features and labels of each sample to form complete single sample data; and integrating the formed single sample data together to construct a sample set, performing feature engineering on the data in the sample set, randomly selecting samples to construct a training set, and using the remaining samples to construct a test set. According to the method, the working process of constructing the sandstone type uranium mine big data prediction sample set is optimized, so that the uncertainty in the working process is reduced.

The present invention discloses a method for in-situ collaborative development of coal-rock-sandstone type uranium deposits. Uranium resources in coal-rock and sandstone type uranium deposits are mined by combining underground coal gasification with in-situ neutral (CO2+O2) in-situ leaching. This method can achieve clean utilization of coal resources through gasification and collaborative development of sandstone and coal-rock type uranium resources. The method has the advantages of low energy consumption, high resource recovery rate, simple process, and low environmental impact. It conforms to the concept of green mining and is of great significance for addressing my country's demand for strategic key metallic uranium resources and protecting the environment.

The invention provides a method for intensifying in-situ leaching uranium mining through an external electric field. The method comprises the steps that a liquid extraction well and a liquid injection well are arranged on a uranium deposit; an inert cathode is mounted at the liquid injection well; an inert anode is mounted at the liquid pumping well; a CO2 + O2 neutral leaching system or an acid leaching system is adopted as the leaching liquid, the leaching liquid is injected into the liquid injection well to conduct in-situ leaching on the uranium ore layer, and the obtained leaching liquid is extracted from the liquid extraction well; the in-situ in-situ immersion is carried out under the assistance of an external electric field; the external electric field is a direct-current pulse voltage applied between the inert cathode and the inert anode. The in-situ leaching uranium mining is enhanced by adding the pulsed electric field, the production efficiency is high, good leaching of uranium ore is effectively achieved, the cost is low, the influence on the environment is small, implementation is easy, and the industrial application value is high.

The invention provides a hot water type uranium deposit underground heat damage cooperative prevention and control method, and belongs to the technical field of mine heat damage prevention and control, and the method comprises the following steps: S1, monitoring deposit geothermal heat damage data, and obtaining monitoring data of rock mass internal temperature, rock wall surface temperature, drainage ditch water temperature, air wind speed, environment temperature and humidity; s2, based on the monitoring data, calculating heat source heat dissipating capacity and dividing heat damage grades, predicting underground temperature field distribution of the mine, and dividing areas with different heat damage grades; and S3, according to the heat damage grade division, implementing at least one prevention and control means of underground excavation working face heat damage prevention and control, underground equipment heat dissipation prevention and control and operator individual heat damage prevention and control aiming at areas with different heat damage grades to form a cooperative prevention and control system. The cooperative system is formed by integrating three types of core prevention and control means, all-directional coverage of heat damage of different dimensions of an underground excavation working face, an equipment area, operators and the like is achieved, and the overall efficiency and economical efficiency of heat damage treatment are remarkably improved.

The present application relates to a kind of extraction methods of uranium resource sample set in flight release feature, specifically to a kind of extraction methods of uranium resource sample set in flight release feature.The present application includes the following steps: step 1, known uranium deposit is converted into polygonal uranium mine area information;Step 2, sample label data in uranium mine area is generated according to fixed distance;Step 3, generate the flight release data of grid format;Step 4, the sample label corresponding to the feature value of flight release data generated by polygonal uranium mine area is calculated;Step 5, the calculation result is saved as uranium resource flight release sample data set.The present application can more accurately reflect the situation of flight release feature in uranium mineralization range.

The invention discloses a multi-parameter evaluation method, exploration method and device for a petrol basin sandstone-type uranium deposit, and the method comprises the steps: analyzing the underground water level geological condition of a petrol basin and the uranium source condition at the periphery of the basin, carrying out the preliminary evaluation of the uranium deposit metallogenic potential of a target region, and determining a sandstone-type uranium deposit target region of the target region; obtaining a plurality of quasi-section diagrams of the sandstone type uranium mine target region along with depth change obtained by measurement based on a multi-frequency phase multi-parameter induced polarization sounding method; and carrying out joint inversion on the plurality of quasi-cross-section diagrams, carrying out evaluation on depth cross-section diagrams with different electrical parameters obtained based on the inversion and a drilling result of the sandstone-type uranium mine target region, and determining an association relationship between the electrical parameters of the sandstone-type uranium mine in the oil and gas basin and uranium mine body distribution and uranium mine body ore-bearing property. The method can accurately and objectively reflect uranium ore body distribution and the position of a redox transition zone closely related to uranium ore, and provides a new technical support for locking the metallogenic position and scale of the sandstone type uranium ore in the oil and gas basin.

The invention discloses a sandstone type uranium mine typical interlayer oxidation zone zoning identification method based on a convolutional neural network, and the method comprises the following steps: 1, obtaining a rock core cross section image, determining a zoning label and a granularity label, and making a sample data set; 2, preprocessing by adopting a digital image technology, and dividing into a training set and a test set; 3, constructing and training a model: selecting a visual classification neural network model, and starting deep learning training of the model by using the preprocessed training set; 4, evaluating a model training result, selecting an optimal prediction model, and verifying the optimal prediction model by adopting a cross validation method; and step 5, applying model prediction. According to the method, the acquired image can be identified through the convolutional neural network to judge the category and granularity in the interlayer oxidation zone to which the image belongs, so that the technical problem that the sandstone type uranium ore zone is not accurately identified manually in the prior art is effectively solved, and the identification efficiency and accuracy are effectively improved.

The invention belongs to the field of basic research of sandstone type uranium ore associated resource evaluation, and particularly relates to a method for judging the existence form of associated gallium in a sandstone type uranium deposit, which comprises the following steps of: measuring the contents of major elements and trace elements of a plurality of uranium ore samples, and judging whether gallium meets the lowest grade requirement of associated resources of the uranium deposit; for uranium ore samples exceeding the lowest grade requirement of gallium associated resources, correlation analysis of gallium elements, main elements and trace elements is carried out, and possible key mineral types closely related to gallium are preliminarily speculated; carrying out slice analysis, and circling an approximate range of speculated possible key mineral types; carrying out scanning electron microscope and energy spectrum analysis combined observation, and determining the existence form of gallium in the uranium deposit; the position exceeding the associated grade gallium is determined through laser in-situ analysis; the gallium-related mineral type is directly determined through electron probe analysis; and comprehensively judging the existence form of gallium in the uranium deposit. According to the method, the existence form of associated gallium in the sandstone type uranium deposit can be accurately and quickly judged.

The embodiment of the application relates to the technical field of sandstone type uranium ore exploration, and particularly relates to a method for determining a favorable area of a sandstone type uranium ore, which comprises the following steps: collecting well logging data of an exploration area of the sandstone type uranium ore, and gradually determining argillaceous content, total porosity of the exploration area, sandstone content of a sand and shale mixed matrix, longitudinal wave time difference, transverse wave time difference and density, equivalent elastic modulus of dry rock of the exploration area, and conversion relationship between longitudinal wave velocity and transverse wave velocity of rock under saturated fluid condition and a transverse wave velocity prediction curve; then, longitudinal wave impedance, velocity ratio of longitudinal wave and transverse wave and a density model are established; according to the model, three-dimensional elastic data bodies of impedance, density and shear modulus of longitudinal wave and transverse wave are determined by inversion; and according to the three-dimensional elastic data bodies, the favorable area of the sandstone type uranium ore is determined. The method for determining the favorable area of the sandstone type uranium ore according to the embodiment of the application can effectively improve the prediction accuracy of a favorable area of a sandstone type uranium ore.

The invention belongs to the technical field of geological exploration, and particularly relates to an ancient granite uranium-rich ore recognition method, which comprises the following steps of: 1, discussing an ancient granite uranium-rich ore metallogenic geological background; 2, analyzing ore control factors of different types of uranium-rich ores in the ancient granite body; and step 3, constructing an ancient granite uranium-rich ore identification mark. The method is efficient, rapid and high in operability, and a basis is provided for widening the prospecting direction of the granite type uranium mine.

The present application provides a prospecting method for sandstone-type uranium deposits based on the boundaries of tectonic units. The method includes: obtaining geological data of a sedimentary basin, determining the spatial distribution, tectonic and stratigraphic characteristics of tectonic units in the sedimentary basin, and determining the types of favorable ore-forming tectonic units according to the spatial distribution, tectonic and stratigraphic characteristics of the tectonic units; for different types of favorable ore-forming tectonic units, combining the gravity data and / or seismic data and / or oil and gas-bearing conditions of the favorable ore-forming tectonic units to determine the primary exploration target areas for sandstone-type uranium deposits. Based on the in-depth analysis of the uranium ore-forming characteristics controlled by the boundaries of tectonic units, the present application takes the uplifts and faults at the boundaries of tectonic units as important indicators for prospecting, and combines geological and geophysical prospecting methods to form a new, efficient and low-cost prospecting method, which can not only accurately lock in the preferred targets in the exploration areas for sandstone-type uranium deposits, but also significantly reduce the blindness in the prospecting process and improve the exploration efficiency.

The invention provides a test method and device for determining uranium metallogenic fluid components, a rock core sample is selected and put into a sealed beaker, a pH-Eh test is carried out for multiple days, after the test is finished, leachate is filtered through ICP-MS, the chemical components of the leachate are determined, and the uranium metallogenic fluid components are determined. The method comprises the following steps: calculating an asphalt uranium ore dissolution precipitation mechanism (mineral saturation index SI), an asphalt uranium ore dissolved uranium concentration boundary value and an oxidation reduction boundary value through hydrogeochemical simulation PHREEQC software, and approximately representing chemical components of ore-forming fluid as well as pH and Eh values of the chemical components by using the measured values; uranium metallogenic conditions and environments are determined through hydrogeochemical simulation calculation, basic data are provided for uranium metallogenic prospective area prediction, experimental data objectively explains the relationship between uranium migration and activation and metallogenic fluid, and the test device can achieve a certain effect for sandstone type uranium ore exploration and prediction.

The invention belongs to the technical field of uranium ore geological exploration, and particularly relates to a sandstone uranium ore excretion structure authenticity discrimination method based on gravity gradient deep constraint, which comprises the following steps: step 1, deep fracture ridge extraction based on gravity data; 2, constructing a'deep part-earth surface 'structure projection buffer area; 3, removing a micro-landform catchment area based on a DEM (Digital Elevation Model); 4, extracting earth surface remote sensing abnormity; and step five, space coupling and excretion zone authenticity discrimination are carried out. According to the method, by constructing a deep fracture-earth surface projection buffer area model and combining with micro-landform analysis, earth surface non-structural ponding and salt accumulation interference is effectively eliminated, and an effective discharge zone with a deep root is accurately locked.

The invention discloses a coal and allogeneic symbiotic uranium ore coordinated mining degree evaluation method based on mining dislocation distance, and the method comprises the steps: depicting the influence of coal mine mining on underground water and uranium ore leaching through building a mining dislocation distance model, and analyzing the mutual interference relation in the mining process of two ores; according to different space staggered distance conditions, four levels of no / weak risk, low risk, high risk and coordinated mining failure are divided, corresponding technical measures such as natural isolation, dynamic regulation and control or engineering isolation are matched, and a resource loss risk and prevention and control capability evaluation matrix is established. On the basis, the resource preservation level and the pollution risk are quantified, a coordinated mining degree index system covering resource safety, production safety and environmental protection is constructed, and comprehensive evaluation is conducted by combining standardization and an analytic hierarchy process. According to the method, the high-risk staggered distance situation can be effectively identified and avoided, and safe and efficient utilization and sustainable development of mineral resources are realized.

The invention provides a sandstone type uranium ore enrichment area sweet spot prediction method comprising the following steps: obtaining field core catalog and drilling information, and establishing a uranium-bearing rock series stratigraphic framework; according to the uranium-bearing rock series stratigraphic framework, uranium reservoirs, redox layers and mineralization data of all the drilling positions are obtained and imported into geological drawing software, and spatial distribution diagrams of the uranium reservoirs, reduced geologic bodies, interlayer oxidation zones, surface ore, mineralization layers and industrial ore are generated; superposing the spatial distribution diagrams of the outside-surface ore, the mineralization layer and the industrial ore with the spatial distribution diagrams of the uranium reservoir, the reduced geologic body and the interlayer oxidation zone respectively, and establishing spatial configuration relationships between the outside-surface ore, the mineralization layer and the industrial ore and the uranium reservoir, the reduced geologic body and the interlayer oxidation zone respectively; the prospecting mark of the rich ore body is tracked according to the spatial configuration relation of the outside-surface ore, the mineralization layer and the industrial ore with the uranium reservoir, the reduced geologic body and the interlayer oxidation zone, the uranium ore enrichment area sweet spot prediction is performed according to the prospecting mark, and the uranium ore exploration accuracy and efficiency are improved.

The invention relates to the technical field of uranium ore sampling, and discloses a high-precision sandstone type uranium ore in-situ precise sampling device, which comprises a support assembly arranged on one side of the top of a stable frame and used for cooperating with a sampling device to complete high-precision operation; the processing assembly is mounted at the top of the stabilizing frame and is used for driving the sampling assembly to adjust the mining depth; the treatment assembly further comprises a bearing frame, a treatment box is installed in the bearing frame, a first movable rod and a second movable rod are rotationally arranged at the two ends of one side of the treatment box correspondingly, and a first smashing roller and a second smashing roller are installed on the outer wall of the second movable rod and the outer wall of the first movable rod correspondingly. And a third gear and a fourth gear are respectively arranged on one side in the same direction. Through the accurately controlled sampling assembly and the multi-stage crushing system, accurate sampling and processing of sandstone type uranium ore can be realized, representativeness and uniformity of samples are ensured, and high-quality samples are provided for subsequent analysis.

The application provides a method for estimating the temperature of the formation of a granite type uranium deposit based on the content of arsenic and selenium in pyrite, which comprises the following steps: firstly, collecting ore samples of the uranium deposit through field geological investigation; then, observing the ore samples under a microscope and analyzing the elements in the laboratory after processing the ore samples; and finally, processing the laboratory data and comprehensively estimating the temperature of the formation of the uranium deposit. The application has reasonable design and simple process, and is simple to operate and has low technical difficulty in estimating the temperature of the formation of the granite type uranium deposit, which is of great significance for deeply understanding the cause of the uranium deposit and predicting the prospect of the formation of the uranium deposit in the deep part.

A one-step method for electrokinetic uranium extraction and separation from sandstone-type uranium deposit is provided, including: using an activating leaching agent to adjust pH of activation environment as pH≤3, converting uranium elements in sandstone-type uranium deposit into positively charged uranyl and its complexes; applying direct current (DC) electric field with voltage gradient of 0.1 V / cm to 2 V / cm between cathode and anode, and allowing the uranium elements to move toward a cathode chamber under the action of the electric field and to undergo selective reduction by receiving electrons to produce a low-valent insoluble uranium-containing substance precipitated on the cathode surface. The present invention, through activating leaching, allows the formation of positively charged uranium ions and their complexes only, and electrophysical effects such as electromigration and electroosmosis promote directional movement of uranium toward cathode, thereby achieving uranium extraction from a sandstone-type uranium deposit.

This application relates to the field of tracer exploration or detection, and provides a geochemical tracing method for concealed sandstone-type uranium deposits. The method provides that by measuring the Mo and Th content in the ground atmosphere and soil, it identifies anomaly zones in the Mo element measurement, anomaly zones in the Mo-Th ratio, and comprehensive anomaly zones. Further measurement of the Mo content in the ground atmosphere is then performed in the comprehensive anomaly zones to determine favorable mineralization areas within the exploration area. According to the method provided in this application, it can effectively identify concealed sandstone-type uranium mineralization information and determine favorable uranium mineralization areas within the exploration area.

This invention pertains to data processing technology for seismic exploration of sandstone-type uranium deposits, specifically an adaptive denoising method for sandstone-type uranium deposit seismic data based on sparse transform. The method includes: inputting noisy raw two-dimensional seismic data y; initializing the maximum number of iterations I, setting the outer iterative accumulator i=1, and designing a search range J for the denoising coefficient truncation percentage; for each i, calculating the curvelet transform coefficients s of y; for each j within the search range, applying hard thresholding for denoising, and performing an inverse curvelet transform on the denoised coefficients to obtain the denoised seismic data y. j ; Calculate the noise removal ε corresponding to each j j The entropy; compare the calculated noise ε removed for each j. j The entropy is calculated, and the percentage corresponding to the maximum entropy within the search range is taken as the optimal denoising effect, and the corresponding seismic data is output. If i reaches the maximum number of iterations, the loop is exited, and the denoised seismic data corresponding to the current maximum entropy value is used as the output result. This invention can protect the effective signal while suppressing random noise.

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.

The present application relates to a kind of sandstone uranium mining method of uranium mining.The method includes: according to the interval between the interval between liquid pumping well and liquid injection well and the permeability of stratum is determined, and according to the thickness of ore bed determines four perforation segments;One liquid pumping well and one liquid injection well correspond to four perforation segments;And each of the perforation segment corresponds to the direction of surrounding well;When indicating the perforation segment on the liquid pumping well, the surrounding well is liquid injection well, when indicating the perforation segment on the liquid injection well, the surrounding well is liquid pumping well;The length of the perforation segment is obtained and is perforated, and according to the length of the perforation segment, the liquid pumping well and the liquid injection well are fractured from bottom to top, until the direction of four perforation segments on any well is fractured;Injection agent is injected into the liquid injection well after fracturing, and leaching solution is extracted from the liquid pumping well after fracturing;The leaching solution is treated, and uranium product is obtained.The present application reduces the cost while improving the permeability, and improves the uranium leaching amount.

The invention belongs to the technical field of sandstone-type uranium ore, and particularly relates to a method for improving the credibility of a sandstone-type uranium ore metallogenic age test result, and the method comprises the steps: 1, carrying out the sampling, drilling and screening of a working region; 2, selecting a rock core as a sample according to the mineralization thickness of the ore section; 3, dividing each sample into a plurality of lower samples, and respectively carrying out U and Pb isotope determination and radium content determination on the lower samples; and step 4, performing U-Pb isochrone age fitting according to U and Pb isotope determination and radium content determination results of the plurality of lower small samples in each sample to obtain the ore-forming age of the sandstone type uranium ore. According to the method, personal subjective factors in the sandstone type uranium ore metallogenic age test process can be effectively reduced, and the credibility of the sandstone type uranium ore metallogenic age test result is improved.