111 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 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 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 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 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 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 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.

A hydrothermal type uranium mine deep structure detection method based on electromagnetic method combined inversion, comprising: based on wide area electromagnetic method and magnetotelluric method, respectively acquiring wide area electromagnetic data set and magnetotelluric data set of each measuring point on the measuring line, and synchronously collecting the resistivity of rock samples, and generating a physical parameter table according to the resistivity; the wide area electromagnetic data set and the magnetotelluric data set are subjected to one-dimensional Occam inversion, and first resistivity profile and second resistivity profile are respectively generated; according to the depth weight function, the physical parameter table, the first resistivity profile and the second resistivity profile, an initial resistivity model is generated; the inversion objective function is iteratively solved by using the combined inversion algorithm, and the two-dimensional resistivity inversion profile is output when the iteration is terminated; the two-dimensional resistivity inversion profile is interpreted according to the physical parameter table, and a three-dimensional structural framework is established by using the interpretation result; based on the three-dimensional structural framework and the two-dimensional resistivity inversion profile, the target area in the target mine field is obtained.

The application discloses a kind of post-blasting sandstone type uranium mine in-situ leaching mining effect prediction method, it is related to sandstone type uranium mine in-situ leaching mining effect numerical simulation field, including: based on finite element analysis platform, HJC rock blasting constitutive model is constructed, blasting numerical simulation is carried out;Calibration is carried out to blasting fracture damage nephogram by Kriging interpolation algorithm;COMSOL multi-physics field model is constructed;Based on MATLAB, COMSOL multi-physics field model and the coupling interface of PHREEQC are constructed, and circulation time and time step are optimized;Geochemical reaction calculation is carried out and saved, while COMSOL file is run, the geochemical reaction calculation result is input into PHREEQC, and dynamic cyclic iteration simulation is obtained;Through integrated LSTM neural network, uraniumyl complex migration coefficient is dynamically corrected, and the output uranium migration multi-scale dynamic simulation result is obtained.Circulation termination.The application realizes the multi-scale dynamic simulation of uranium migration in the process of lixiviant injection, and improves the uranium migration prediction accuracy.

The invention discloses a luminescence signal abnormity discrimination method suitable for sandstone type uranium ore light luminescence exploration, which comprises the following steps: S1, selecting a soil sample in a sandstone type uranium ore exploration area, and extracting quartz feldspar mixed minerals; s2, constructing a soil photoluminescence signal dose response curve by adopting quartz feldspar mixed minerals; s3, applying different regenerative doses Rx to the quartz feldspar mixed mineral by adopting a standard radiation radioactive source, performing infrared light excitation and blue light excitation, calculating an abnormal indication parameter LIRSL / LOSL, determining a reasonable value of the LIRSL / LOSL in the range of the regenerative doses Rx, and drawing a reasonable range screening graph of the LIRSL / LOSL value; s4, sequentially performing infrared light excitation and blue light excitation measurement on quartz feldspar mixed minerals extracted from all the soil samples to be detected in the sandstone type uranium ore exploration area to obtain LIRSL and LOSL; the LOSL is substituted into a soil photoluminescence signal dose response curve to obtain De, the De value and the LIRSL / LOSL value are substituted into the reasonable range discrimination graph, and discrimination of soil natural photoluminescence signal abnormity in sandstone type uranium mine photoluminescence exploration is achieved.

The invention belongs to the technical field of mineral exploitation, and particularly relates to a mining method suitable for a coal mine overlying drainage type sandstone uranium ore, which comprises the following steps: acquiring the spatial position of a sandstone uranium ore body through a geological survey means; digging a shaft from the ground to the bottom layer of the sandstone uranium ore body, and digging a gate way below the sandstone uranium ore body; in the delineated area, dividing the sandstone uranium ore body into a plurality of in-situ leaching units through gate tunneling; continuous low-position grouting-liquid pumping dual-purpose drill holes are drilled in the side wall of the gate way in the in-situ leaching unit, and then a crack connected with the sandstone uranium ore body is transformed into a low-permeability crack through post-grouting; guniting is carried out in the gate way of the in-situ leaching unit to form an anti-seepage reinforcing wall; punching a high-level liquid injection hole in the sandstone uranium ore body corresponding to the in-situ leaching unit; and carrying out in-situ leaching treatment to obtain uranium-containing minerals. The mining-induced fracture in the coal mine overlying drainage type sandstone uranium mine can be treated, a local in-situ leaching uranium mining flow field unit is formed, and therefore in-situ leaching uranium mining in a coal mine overlying drainage type sandstone uranium mine reservoir is achieved.

The embodiment of the invention relates to the field of electric or magnetic exploration or detection, in particular to a method and system for determining the extension form of a fracture deep part of a granite type uranium mine. According to the method and the system, the relation between the electrical difference and the underground geologic structure can be quantified by determining the relation between the electrical resistivity of the fracture area and the electrical resistivity of the peripheral area of the fracture area; an underground resistivity inversion cross-section diagram is determined according to the frequency-apparent resistivity of each measuring point, and the deep extension form of the fracture can be visually judged; according to the method, the frequency-apparent resistivity at the measuring point is determined only by using the electric field signal, so that the calculation result is more accurate; and in combination with an underground resistivity inversion section diagram of a detection section, the deduction of the deep extension form of the fracture can be more accurate.

The present invention relates to a method for accurately delineating the sand-mud transition zone of a uranium reservoir based on three-dimensional seismic velocity inversion, comprising the steps of positioning and calibrating the uranium reservoir based on well seismic data, implementing structural interpretation of the target layer and constructing an initial inversion model, implementing high-resolution velocity inversion to obtain a velocity body and quality control, filtering the velocity body to obtain a low-frequency velocity body, maximizing the dominant velocity value of the ore-bearing sand-mud transition zone, obtaining a body characterizing the sand-mud transition zone attribute, and delineating the sand-mud transition zone. This method achieves a three-dimensional depiction of the sand-mud transition zone in full three-dimensional space; it can analyze the spatial configuration relationship between the ore body and the sand-mud transition zone, thereby facilitating the summary of the corresponding mineralization laws and mineralization-controlling factors; the sand-mud transition zone finally delineated is of great significance for the comprehensive analysis of the mineralization mechanism and distribution law of sandstone-type uranium deposits in the sand-mud transition zone, and provides strong technical support for enriching the overall mineralization theory of sandstone-type uranium deposits and establishing prospecting models.

The present application belongs to the technical field of uranium mine, and particularly relates to a method for evaluating the effect of intermediate-basic rock intrusion reformation on uranium mineralization in sandstone type uranium mine, which comprises the following steps: step one, data collection; step two, field core observation and sample collection; step three, evaluation of the space-time relationship between intermediate-basic rock intrusion reformation and uranium mineralization; step four, evaluation of the influence of intermediate-basic rock intrusion reformation on the physical property of ore-bearing layer; step five, evaluation of the influence of intermediate-basic rock intrusion reformation on groundwater migration and driving mechanism; step six, evaluation of the influence of intermediate-basic rock intrusion reformation on uranium mineralization; and step seven, comprehensive analysis and evaluation of the uranium mineralization effect of intermediate-basic rock intrusion reformation in sandstone type uranium mine. The method comprehensively evaluates the influence of intermediate-basic rock intrusion reformation on the formation and preservation of uranium mine, identifies the uranium mineralization effect of intermediate-basic rock intrusion reformation in sandstone type uranium mine, and establishes a sandstone uranium mineralization pattern diagram of intermediate-basic rock intrusion reformation.

A method for determining a mining value of a leucogranite-hosted uranium deposit, including: determining average uranium grade, uranium occurrence, average uranium recovery rate, and uranium stripping ratio of the leucogranite-hosted uranium deposit in an exploration region, wherein the average uranium recovery rate is a ratio of a uranium recovery amount after hydrometallurgy to a total uranium amount, and the uranium stripping ratio is a ratio of an amount of rock to be stripped to a uranium ore amount in a mining process; and determining the mining value of the leucogranite-hosted uranium deposit in the exploration region, wherein the mining value of the leucogranite-hosted uranium deposit is determined based on one or more of the average uranium grade, the uranium occurrence, the average uranium recovery rate, and the uranium stripping ratio.