165 results about "Uranium mine" patented technology

The invention discloses a horizontal well injection-vertical well extraction well pattern arrangement and mining method for in-situ leaching uranium mining, and relates to the field of mining engineering. The main method for arranging the well pattern comprises the steps that a horizontal liquid injection well is arranged in the middle of an ore bed in the trend of the ore bed, vertical liquid pumping wells with the same number are arranged on the two sides of the horizontal liquid injection well, the distances between the adjacent vertical liquid pumping wells on the same side of the horizontal liquid injection well are equal, and the vertical distances between the vertical liquid pumping wells and the horizontal liquid injection well are equal and are half of the distances between the adjacent vertical liquid pumping wells; the horizontal distance between the peripheral vertical liquid extraction wells and the end point of the horizontal well is half of the distance between every two adjacent vertical liquid extraction wells, and a similar determinant arrangement is formed. The mining method can overcome the defects of extraction and injection of traditional vertical liquid extraction wells, the leaching range of in-situ leaching uranium mining is expanded, and the leaching efficiency of in-situ leaching uranium mining is improved. Uranium mine mining nonuniformity caused by nonuniform flow distribution of the leaching liquid is reduced, and the uranium mine mining efficiency and the resource utilization rate are improved.

The invention belongs to the technical field of nuclear power, and particularly relates to a nuclear industry uranium mine mining equipment inspection management system. According to the nuclear industry uranium mine mining equipment inspection management system provided by the invention, the inspection point configuration model taking the equipment assets as the core is constructed, and deep binding of the inspection task and the equipment ledger is realized. On the basis, the system can automatically generate a matched inspection plan according to key parameters such as the operation cycle and the inspection frequency of the equipment, and accurate compilation and standardized configuration of tasks are achieved. The generation of the inspection plan does not depend on artificial experience any more, artificial omissions and configuration errors are effectively reduced, the systematicness and normalization of task coverage are improved, timely inspection and high-frequency management and control of high-risk equipment are guaranteed, and the rigid requirement of the nuclear industry for high-reliability operation and maintenance management is met.

The invention discloses a uranium ore in-situ leaching mining multi-field coupling simulation method, device, equipment and medium, and relates to the field of in-situ leaching uranium mining. According to the uranium mine in-situ leaching mining multi-field coupling simulation method, the device, the equipment and the medium, in-situ leaching uranium mining reactive solute transport control of sandstone type uranium mine reservoir stress-seepage-chemical action is considered, and the influence of fluid temperature in the uranium mine reservoir and reservoir damage in the in-situ leaching process on in-situ leaching mining is emphatically considered; a distribution function is adopted to represent heterogeneity of mechanical parameters, so that a seepage-chemical-temperature-damage full-coupling numerical model suitable for sandstone type uranium mine CO2 and O2 in-situ leaching is established, and leachate uranium concentration data obtained through simulation calculation is compared with uranium concentration data of an on-site leaching test; the full-coupling numerical model is optimized to obtain a reasonable mathematical model to predict the parameter change trend in the CO2 and O2 in-situ leaching uranium mining process, and important guiding significance is provided for optimization of site scale CO2 and O2 in-situ leaching mining.

The invention relates to the technical field of in-situ leaching uranium mining, and provides an in-situ leaching uranium mine unit pre-oxidation circulating system and method. The in-situ leaching uranium mine unit pre-oxidation circulation system comprises a liquid extraction drilling hole; a plurality of liquid injection drill holes; the drainage hole is connected with the drainage hole through an ore bed seepage channel; the deep well submersible pump is arranged in the liquid extraction drill hole; the buffer device comprises a tank body, a plurality of communicating pipes arranged at the lower part of the tank body and a sampling nozzle arranged on the tank body; two ends of the lifting pipe are respectively connected with an outlet of the deep well submersible pump and the top of the buffer device; the plurality of liquid injection well inner pipes are respectively connected with the corresponding communicating pipes of the buffer device and the liquid injection drill holes; wherein the deep well submersible pump is used for conveying leaching liquid in the liquid pumping drill holes to the buffer device through the lifting pipe, the leaching liquid is distributed through the buffer device, then is injected into the corresponding liquid injection drill holes through the liquid injection well inner pipes and flows back to the liquid pumping drill holes through the ore bed seepage channel, and a pre-oxidation circulation loop is formed. Pre-oxidation circulation is completed in advance, and the leaching time of a mining area is shortened.

The invention discloses a comprehensive evaluation method for soil pollution in a decommissioned uranium mine area, relates to the technical field of environmental evaluation, and solves the technical problem that a soil pollution evaluation method is not clear due to lack of soil pollution data in an existing decommissioned uranium mine area. According to the technical scheme, the method is characterized in that the influence of radionuclides, environmental ecology, environment and biological effects in the decommissioned uranium mine area soil on the soil quality is comprehensively considered, key influence factors influencing the uranium mine area soil quality can be screened out, and the problems that existing data is lack, and a research method is not clear are solved; and a basis is provided for subsequent sustainable utilization of soil and environmental health.

The invention provides a sandstone type uranium mine seismic exploration device and method, and the device comprises a plurality of artificial seismic sources and a plurality of detectors which are disposed on the ground surface of a detected region. The detector comprises at least three detection units. Each detection unit comprises a support, a fixing piece, a detection piece and a guide rail. The fixing piece is connected with the support, the guide rail is connected with the support, the detection piece is movably connected with the guide rail, the fixing piece is parallel to the detection piece, and the orthographic projection of the fixing piece and the orthographic projection of the detection piece are overlapped in the thickness direction of the detection piece. The earth surface grid is used for separating the earth surface of the measured area along the first reference direction and the second reference direction; the surface grid comprises a plurality of grid nodes; the artificial seismic sources are arranged on the grid nodes in an array mode in the first reference direction and the second reference direction, and a plurality of grid nodes are arranged between every two adjacent artificial seismic sources; and the detectors are arranged at the other grid nodes. The accuracy of the exploration result can be improved.

The invention belongs to the technical field of uranium mining, and particularly relates to a sodium persulfate acid oxidation green in-situ leaching uranium mining method. The method comprises the following steps: (1) exploring and pretreating an ore bed; (2) arranging an injection well and an extraction well; (3) preparing an acidic leaching solution; (4) injecting a leaching solution; (5) in-situ leaching circulation and monitoring; and (6) post-harvest treatment. The novel green acid in-situ leaching uranium mining method is developed, the oxidation rate of tetravalent uranium can be greatly increased, the uranium leaching rate is increased, and compared with an existing acid leaching method, the uranium leaching rate is remarkably increased, and environmental protection is achieved.

The invention discloses a uranium-containing fluid migration simulation method, a uranium-containing fluid migration simulation device, uranium-containing fluid migration simulation equipment and a storage medium, and relates to the technical field of digital uranium mine mining and metallurgy. The information of the current time step and the information of the next time step can be jointly used in the time iteration process, and therefore high solving precision and stability are achieved. The method comprises the following steps: describing a migration process of uranium-containing fluid in underground water by using a nonlinear partial differential equation set; iteratively solving the nonlinear partial differential equation set by using a pre-constructed time discretization physical information neural network to obtain prediction solutions at different set moments, and taking the solution of the current time step as input and the prediction solution of the next time step as output by the time discretization physical information neural network; and according to the prediction solutions at different set moments, determining the migration change of the uranium-bearing fluid in each time period so as to carry out migration simulation on the uranium-bearing fluid.

An energy-gathering ultrasonic scrubbing device includes a scrubbing cylinder, a reverse stirring system, an energy-gathering ultrasonic vibrator and a slurry storage tank. The reverse stirring system is located inside the scrubbing cylinder. It includes a rotating shaft and at least four layers of reverse stirring blade structures arranged in an axial direction of the rotating shaft. Each layer of reverse stirring blade structure includes several blades arranged in a circumferential direction of the rotating shaft. Inclination directions of blades of two adjacent layers relative to the rotating shaft are opposite. The energy-gathering ultrasonic vibrator includes an ultrasonic transducer and an energy-gathering vibration transmitting rod. The ultrasonic transducer is fixed outside of the scrubbing cylinder. The energy-gathering vibration transmitting rod is connected to the ultrasonic transducer and located inside the scrubbing cylinder. A discharge port of an overflow residue discharge pipe is directly guided to the slurry storage tank.

The invention belongs to a uranium mine multivariate information fusion method, and particularly relates to a sandstone type uranium mine geochemical data multivariate information fusion method. The method comprises the following steps: (1) carrying out standardization processing on original geochemical analysis element data of the sandstone type uranium mine; (2) calculating a correlation coefficient matrix of the original data, and screening elements with correlation coefficients greater than 0.4 as sample data of information fusion; step (3), calculating a covariance matrix of the sample data; step (4), calculating; (5) calculating an accumulated variance contribution rate; (6) calculating the score coefficient of each principal component, and calculating the score of each principal component; and step (7), according to the comprehensive principal component data, making a comprehensive principal component map, and carrying out geological anomalous body identification. The method has the remarkable effects that multi-information fusion is carried out, the influence of external interference factors can be reduced, the purpose of improving the geochemical data abnormal contrast and the data processing reliability is achieved, and a reliable basis is provided for delineation of the prospective area of the sandstone type uranium mine.

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 relates to the technical field of electrochemical uranium extraction, in particular to a uranium extraction method based on electrochemical mediation FeS active site regeneration. According to the specific technical scheme, under the anaerobic condition, a nano FeS modified working electrode is prepared on a carbon-based material through in-situ deposition, and a corresponding electrochemical uranium extraction system is constructed. The system operates at room temperature and low energy consumption, and U (VI) is efficiently reduced into low-toxicity and indissolvable tetravalent uranium and enriched on the surface of an electrode through efficient adsorption and coordination effects of FeS active sites on uranyl ions and driving of cathode potential. According to the uranium extraction method of the nano FeS in-situ modified carbon cloth electrode provided by the invention, consumed FeS active sites are regenerated in situ by utilizing an electrochemical method, and the high activity and long-term stability of the electrode are maintained. The method shows high extraction capacity, high selectivity and excellent cycle performance for uranium in uranium mine wastewater and seawater, and provides a reliable way for efficient and sustainable uranium resource recovery.

The utility model belongs to a separation device, and particularly relates to an oxygen filling gas-liquid separation device for an in-situ leaching uranium mining mine. The oxygen filling gas-liquid separation device for the in-situ leaching uranium mining mine comprises a liquid storage tank, a gas inlet pipe is arranged at the top end of the liquid storage tank, a pressure-bearing drain valve is arranged at the bottom of the liquid storage tank, and a gas outlet pipe is further arranged at the top end of the liquid storage tank. The device has the remarkable effects that after the device is put into use, the problems that liquid in a closed pipeline is difficult to discharge, and the pipeline is blocked due to residual liquid in the pipeline are effectively solved.

The invention discloses a physical permeation increasing device and method for improving the permeability of a sandstone type uranium ore layer, relates to the technical field of in-situ leaching uranium mining, and aims to solve the problems that in the sandstone type uranium ore layer process, due to the fact that the permeability of an ore layer is poor, the drilling hole liquid pumping and injecting amount is affected, and the productivity is seriously affected in the existing mining technology. The device comprises a cavitation pipe column inserted into a casing pipe, the cavitation pipe column comprises an oil pipe arranged in the casing pipe, a filter is arranged on the lower portion of the cavitation pipe column, a cavitator is arranged at the bottom of the cavitation pipe column, the top of the cavitation pipe column is connected with the bottom of a Christmas tree, and water return pipelines are connected to the two sides of the Christmas tree respectively. The Christmas tree is connected with the water storage tank through a water return pipeline, the top of the Christmas tree is connected with a high-pressure water faucet pipe, and pump injection equipment is arranged between the high-pressure water faucet pipe and the water storage tank.

The invention relates to a sandstone type uranium mine exploration method, device and equipment, and belongs to the technical field of uranium mine exploration, the method, device and equipment collect at least two groups of soil hydrogen, helium and radon data at any exploration point on a survey line, the data are processed, and the effectiveness of the data is improved; and judging the abnormal condition of the soil hydrogen, helium and radon data according to the calculated abnormal lower limit threshold, and determining the positions of the sandstone type uranium ore body and the fracture structure according to the abnormal condition of hydrogen in combination with the drawn analysis chart. And distinguishing ore-induced abnormality, ore-bearing structure abnormality and structure abnormality according to the comparison condition of the helium-radon concentration abnormality and the hydrogen concentration abnormality. According to the method, hydrogen, helium and radon are combined for the first time to form a rapid, economical and effective exploration method, effective exploration of the sandstone type uranium mine is achieved, the exploration efficiency and accuracy of the sandstone type uranium mine are improved, and technical support is provided for uranium resource evaluation and deep prospecting information detection.

The invention provides a composite membrane for separating 226Ra and 210Pb as well as a preparation method and application thereof, and relates to the technical field of radioactive ion extraction and separation, and the preparation method comprises the following steps: mixing polyacrylonitrile, crown ether and ionic liquid to obtain a spinning solution, and spinning the spinning solution into a membrane to obtain the composite membrane. Effective extraction and separation of 226Ra and 210Pb in the uranium ore digestion solution can be realized, so that radioactive pollution in the environment is reduced, environmental resources can be recycled, meanwhile, the preparation method is simple and low in cost, and the prepared composite membrane is non-toxic and harmless and is beneficial to industrial application.

The invention relates to the field of small-caliber core drilling, in particular to a composite sheet drill bit for sandstone type uranium mine rope coring. The drill bit comprises a drill bit body, the drill bit body is arranged at the foremost end of a drilling pipe, the drill bit body is of an annular structure, a plurality of fan-shaped tire bodies are arranged at the top end of the drill bit body, a water gap is formed between every two adjacent tire bodies, composite sheets are further arranged on the drill bit body, the composite sheets are arranged between every two adjacent tire bodies, and every two adjacent composite sheets are symmetrically arranged in a staggered mode. The compact drill bit has the advantages that the compact drill bit is simple in structure, the service life of the compact drill bit can be effectively prolonged, and the rock core recovery rate of a sandstone stratum is increased. The inner and outer gauge protection strips can effectively reduce drill bit abrasion and reduce wire line coring drill lifting times. The drill bit is further characterized in that the rotation stability of the drill bit at the hole bottom is effectively improved through the design of the eight-wing composite sheet, jumping of a drilling tool is avoided, and the adaptability of the drill bit to different stratums is improved. In addition, the multi-water-gap design of the drill bit can prevent a cutting tool mud drum from being passivated, the problems of pump suffocation, difficulty in inner pipe salvage and the like in the drilling process are reduced, and therefore the drilling speed is increased.

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 invention belongs to the technical field of sandstone type uranium ore geological drilling, and particularly relates to a compact mudstone stratum coring bit suitable for sandstone type uranium ore geological drilling. According to the drill bit, the inner cutting teeth and the outer cutting teeth are arranged in a staggered mode, the top ends of the inner cutting teeth and the outer cutting teeth are located at different heights and are arranged in a stepped mode, so that in the rotating process of the drill bit, the high-position cutting teeth firstly make contact with a stratum for cutting to form a broken free face, and the low-position cutting teeth further cut to expand the formed cutting free face; a stratum cutting free surface is enlarged compared with a drill bit in the prior art, so that the effect of improving the drilling efficiency is achieved. In addition, the water gaps are evenly distributed close to the cutting teeth, and cut rock debris is removed in time.

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 relates to the technical field of sandstone type uranium mine drilling and well completion, and provides a chambering type in-situ leaching drilling secondary well completion quality control method and device, a medium and equipment, and the method comprises the steps: obtaining the original formation logging characteristics of a target logging section and the after-chambering formation logging characteristics; calculating a three-dimensional characteristic evaluation index based on the hole-expanded formation logging characteristics and the original formation logging characteristics; when the three-dimensional characteristic evaluation index does not meet the preset requirement, reaming construction is conducted again; when the three-dimensional characteristic evaluation indexes meet preset requirements, a filter is put down for gravel throwing, and the gravel throwing rate of the reaming position is calculated after gravel throwing; when the gravel throwing rate meets a preset threshold value, well completion quality evaluation is completed, and an evaluation report is determined; and when the gravel throwing rate does not meet the preset threshold value, secondary gravel throwing construction is conducted. According to the embodiment of the invention, the three-dimensional characteristic index of the reaming position is combined with the gravel throwing rate of the reaming section, so that the multi-dimensional control of the drilling well completion quality of the sandstone type uranium mine is realized, the leaching effect of the ore bed is improved, and the service life of the drilling hole is prolonged.

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 invention discloses a uranium mine logging instrument based on ultrashort pulse neutrons and a working method thereof, and relates to the field of uranium mine exploration logging. The logging instrument comprises a control communication short section, an ultrashort pulse neutron generator used for emitting fast neutron pulses with the pulse width smaller than 1 microsecond to a stratum, a shielding body and a double-thermal-neutron detection assembly used for detecting thermal neutrons and epithermal neutrons on measuring points consistent in space, all of which are sequentially arranged in the axial direction of the logging instrument. The gamma detector is used for detecting inelastic scattering gamma rays emitted by stratum elements and capturing gamma rays, and the fast neutron detector is used for detecting and outputting source intensity monitoring signals of fast neutron pulses in real time. According to the logging instrument, the ultra-short fast neutron pulse is emitted, the neutron yield is detected in real time, the neutron time spectrum and gamma-ray energy spectrum multi-dimensional information with an accurate timestamp are obtained in a combined mode, high-precision and anti-interference inversion is conducted on the stratum uranium content, and stratum information is obtained efficiently and accurately.

The invention belongs to a detection system and method, and particularly relates to a dynamic anti-seepage detection system for an in-situ leaching uranium mine evaporation pond and a construction method. The in-situ leaching uranium mine evaporation pond dynamic anti-seepage detection system comprises an evaporation pond, and a detection optical cable is arranged below the evaporation pond. The method has the remarkable effects that the heating and temperature sensing optical cables are laid below the evaporation pond according to fixed intervals, when a leakage accident occurs, the temperature of a leakage point can change obviously, the leakage point can be found out in time, the solution state of the evaporation pond can be mastered accurately in real time, and leakage information can be early warned in time through the laying path of the temperature sensing optical cables; and the absolute safety of the radioactive water body in the evaporation pond is ensured.

The application provides a sandstone uranium mine gas-liquid alternating leaching method, which comprises the following steps: S1, injecting a leaching agent into a core column filled with a naturally broken sample until the leaching agent fills the core column; S2, injecting oxygen into the core column, raising the pressure in the core column to a first target pressure P1 and maintaining the pressure until a first target time, so that the sample reacts under the action of the leaching agent containing dissolved oxygen to form a reaction solution; S3, transferring the reaction solution in the core column to the intermediate container; the application has the beneficial effect that the sample in the core column is subjected to gas-liquid alternating leaching, the oxygen in the leaching liquid reacts with the sample to alternately change into an oxygen-rich gaseous state, so that the mineral is in a wetted state, the surface liquid film layer is thinned, the diffusion of oxygen at the gas-liquid interface is facilitated, the oxidation rate is accelerated, when the liquid film surface and the ion concentration difference in the leaching agent are converted into an oxygen-rich liquid state again, the hydrodynamic dispersion process is accelerated, and thus the leaching rate is improved.

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 provides an electro-Fenton treatment device and method for activating and collecting uranium in uranium-containing ore pulp, and belongs to the field of manufacturing of other special equipment for uranium purification and conversion, uranium concentration and the like. According to the device, Fenton reaction is activated through an electric field, high-activity substances such as hydroxyl radicals (HO) are generated in uranium-containing ore pulp to activate uranium, and therefore the leaching efficiency of uranium is improved. The device comprises a reaction tank, the main body of the reaction tank is cylindrical, the upper part of the outer wall of the reaction tank is provided with a feed port / pipe and a discharge port / pipe, the top of the main body of the reaction tank is provided with an access hole and a stirring motor, the bottom of the main body of the reaction tank is provided with an emptying port / pipe, and a stirring mechanism is arranged in the tank body of the reaction tank. In the reaction, an electric field promotes circulation and regeneration of Fe < 2 + > / Fe < 3 + >, and efficient operation of the electro-Fenton reaction is kept. Meanwhile, the auxiliary effect of the electric field can reduce the pH value of the solution, the reaction condition is optimized, and the activation and leaching rate of uranium is remarkably increased. The method can effectively reduce the consumption of the oxidant, reduce the treatment cost and improve the uranium collection efficiency.

The invention discloses a PAN-based electrostatic spinning uranium adsorption film as well as a preparation method and application thereof, and relates to the technical field of uranium resource recovery and wastewater treatment such as seawater / salt lake brine and uranium mine wastewater. The preparation method comprises the following steps: respectively filling a PAN-based spinning solution and two monomer solutions into three injectors of electrostatic spinning equipment, and then carrying out electrostatic spinning to enable the two monomer solutions and the PAN-based spinning solution to be subjected to synergistic spinning to obtain a primary electrostatic spinning membrane; the two monomer solutions are an amino monomer solution and an aldehyde monomer solution, and the molar ratio of an amino monomer to an aldehyde monomer is 1: 1; and spraying the surface of the primary electrostatic spinning film wet by acetic acid, and then carrying out hot pressing treatment to obtain the PAN-based electrostatic spinning uranium adsorption film. According to the preparation method, a PAN-based spinning solution and two monomer solutions are adopted for synergic spinning, so that nano-pore channels exist in the PAN-based electrostatic spinning uranium adsorption film, and a COF-like adsorbent is uniformly loaded on the surface of nano-fibers.

The invention provides a uranium mine distribution prediction method based on seismic exploration, and the method comprises the following steps: dividing surface grids, arranging artificial seismic sources and detectors at grid nodes, obtaining exploration underground rock stratum distribution information corresponding to the grid node where each artificial seismic source is located, training an ideal uranium mine distribution grid model, and predicting uranium mine distribution. And inputting the exploration underground rock stratum distribution information into the ideal uranium mine distribution grid model, outputting ideal underground rock stratum distribution information, calculating an ideal error, determining a prediction position according to the ideal error and a preset error, and taking the prediction position as a reference to obtain predicted uranium mine distribution information outside the exploration area. According to the uranium mine distribution prediction method based on seismic exploration, the uranium mine distribution prediction accuracy and reliability can be improved.

The invention discloses a borehole influence factor aperture correction method for uranium fission instant neutron logging, and aims to solve the problem of neutron counting rate response deviation caused by borehole size change in a uranium mine logging process. Time spectrums of thermal neutrons and epithermal neutrons in different apertures in uranium fission instant neutron logging are obtained, and the rule that the time spectrums of the thermal neutrons and the epithermal neutrons change along with the hole diameter is researched. And based on a numerical simulation result, a fitting formula and a correction coefficient of the aperture influence factors are solved. The correction method can be used for analyzing the influence of the aperture size change on the counting rate of the neutron detector, effectively improves the uranium mine grade evaluation accuracy under the complex borehole condition, and is especially suitable for well logging interpretation of non-standard borehole diameters and diameter-expanded stratums.