206 results about "Uranium mine" patented technology

The invention belongs to the field of mineral exploration, and in particular relates to a comprehensive prediction method for a prospective area of a granite type uranium mine field, which aims at improving the space positioning accuracy and reliability of a metallogenic prediction area by virtue of remote sensing, geophysical, geological and geochemical methods. The method comprises the following steps: identifying and verifying structures, namely interpreting a remote sensing structure, and geophysically verifying and geologically analyzing a framework structure; screening metallogenic areas, namely screening the framework structure conditions, magmatic activity conditions, uranium source layer conditions and faulted red basin conditions of metallogenic parts; and predicting the prospective area of the mine field, namely grading key area structure conditions, evaluating remote sensing image texture characteristics, aero-radioactive characteristics and geochemical characteristics, and delimitating and grading the prospective area of the mine field. The method can be applied to evaluation and prediction of the metallogenic prospective area of the hydrothermal uranium mine field, especially the granite type uranium mine field.

The invention provides a method for restoring uranium milltailings by utilizing plants, which is a technique for restoring the uranium milltailings by utilizing uranium-enriched plants (macleaya cordata) as the material. The method directly plants macleaya cordata into the uranium milltailings without other supplementary means and comprises the following steps: (1) sterilizing seeds; (2) plantingseedlings in pots; (3) transplanting the plants into the uranium milltailings; (4) and carrying out the centralized processing on the reaped overground part. The method solves the problem that the prior uranium milltailings release uranium and heavy metals under natural conditions to damage the environment. The method has the advantages of simple operation and management, high restoration rate aswell as low cost and environmental risk and beautifies the environment. The method is suitable for treating solid uranium waste storage yards in uranium mines, hydrometallurgy plants, various ettle and milltailing warehouses, and the like.

A phytoremediation method based on soil contaminated by uranium tailings comprises the steps for culturing pokeberry seedlings on a substrate containing uranium tailings, surviving, growing, harvesting and centrally processing. The method comprises the following steps of: (1) mixing soil contaminated by uranium tailings, surface oil of forest and pig manure according to a ratio to obtain a culture substrate; (2) adding sodium silicate in the culture substrate; (3) sterilizing seeds; and (4) potting. By adopting the comprehensive processing scheme combined with the pokeberry, the uranium tailings, the surface oil of forest, the pig manure and the sodium silicate, the method can solve the difficult problem that the environment can be endangered by heavy metal, uranium, which is released by uranium tailings under natural condition. The method has the advantages of convenient operation and management, high remedying efficiency, low cost, low environment risk, environment beautification, etc., and is suitable for processing solid-state uranium waste storage fields such as uranium mines, hydrometallurgy plants and waste ore and tailings reservoirs.

The invention discloses a method for restoring and improving uranium tailing residues-contaminated soil, the employed materials comprise Aeschynomene indica, Miscanthus floridulus and Imperatacylindrica, plant ash and cow dropping, the plant ash is made by burning the Miscanthus floridulus and the Imperatacylindrica. The plant ash and the cow dropping is formulated into a mixed fertilizer in accordance with a proportion to be fertilized in a plant ditch that is built in uranium tailing residues-contaminated region, the three plants of the Aeschynomene indica, the Miscanthus floridulus and the Imperatacylindrica are planted in groups in the plant ditch. By using the method, dense vegetation can be constructed in a very short time to prominently increase soil nitrogen, organic matters and pH value, and meanwhile, the soil root density is increased and the content of soil water-soluble uranium is reduced obviously. The method has the advantages of simple operation, low cost, good efficiency of preventing the uranium from transfer and diffusion, and beautifying the environment. The technique can be used in reconstructing vegetation in a degraded ecosystem of mines and greening expressways.

The invention relates to a sandstone-type uranium mine target region optimal selection method based on element geochemical anomaly. The method successively comprises the following steps: 1) element geochemical data is acquired or collected; 2) a single element geochemical anomaly map is established; 3) the mineral occurrence projection transformation process is performed; 4) the indicator element screening process is performed; 5) uranium element and auxiliary indicator element geochemical anomaly maps are established and the projection transformation process is performed; 6) and the level of an uranium metallogenic prospect target region is judged. The method of the invention is suitable for a plurality of sandstone-type metallogenic belts and forecast regions on a national scale, and advantages of wide coverage, high effectiveness, good applicability and good accuracy can be realized. According to the invention, the indicator elements are clear, the advantage of good operability can be realized, the method process is evaluated normatively, the evaluation efficiency is improved, and the objectivity of the study result can be ensured.

The invention belongs to the technical field of uranium ore, and specifically relates to a method for testing the formation age of crystalline uranium ore; The age of uranium deposits and the role of metallogenic evolution analysis, decomposing the key elements and main ore-controlling factors of each metallogenic period from complex geological phenomena, providing ideas for uranium deposit exploration, and guiding specific ore-prospecting work to test crystal quality The method for the formation age of uranium ore; including the following steps: Step 1, field investigation and collection of uranium ore samples; Step 2, rock ore identification and electronic probe analysis on the ore samples; Step 3, using LA-ICP-MS Micro-zone dating of crystalline uranium ore; step 4, data collation, parameter calculation and mapping, and finally the formation age of uranium ore is obtained.

The invention discloses a coal and uranium coordinated mining perspective physical simulation device and application method. The coal and uranium coordinated mining perspective physical simulation device is provided with a coal mining mechanism, a uranium mining mechanism and a observing mechanism, wherein the coal mining mechanism is provided with an organic glass box, a front panel, a rear panel, a bottom panel, a top panel, a left panel, a right panel, a strip-shaped water bag, a transporting pipe, a valve, a beaker, transparent soil, a press machine pressing head and small holes; the uranium mining mechanism is provided with positive pressure pumps, negative pressure pumps, a tracer agent, a liquid storing tank, conduits, an electric wire, a liquid injecting hole, a liquid pumping holeand a centralized control table; and the observing mechanism is provided with an industrial camera and a line laser generator. According to the coal and uranium coordinated mining perspective physical simulation device and application method, the volume of the strip-shaped water bag is adjusted to simulate coal seam mining, the positive pressure pumps are adopted to internally inject the tracer agent into the transparent soil to simulate uranium mine in-situ leaching mining, the mechanisms are matched closely, a multi-field coupling evolution law of coal and uranium coordinated mining is obtained, a coal and uranium coordinated mining scheme is optimized, and the recovery rate and economic benefits of co-associated resources are improved.

The invention provides a method of searching for hidden uranium mine in a granite area. The method comprises: S1, determining a preliminary measurement point in a surveying area; S2, measuring uranium, thorium and potassium contents of a ground gamma-ray energy spectrum, the radon gas concentration of the surface soil or the thermoluminescence intensity of the surface soil, and a uranium component content in the surface soil at a preliminary measurement point; S3, making profile maps and planar contour maps of all measurement parameters as well as an integrated profile map and an integrated planar contour map; S4, determining and setting an abnormal prediction zone; S5, determining a final measurement point in the abnormal prediction zone; S6, measuring uranium, thorium and potassium contents of the ground gamma-ray energy spectrum, the radon gas concentration of the surface soil or the thermoluminescence intensity of the surface soil, and a uranium component content in the surface soil at the final measurement point; S7, making profile maps and planar contour maps of all measurement parameters as well as an integrated profile map and an integrated planar contour map; S8, determining and setting an abnormal prediction zone; and S9, carrying out engineering revealing. With the method provided by the invention, the searching work hit rate and the work efficiency for searching for hidden uranium mine in a granite area are improved and the mine searching cost is lowered.

The invention relates to a detection method of nano-scale uranium particles based on soil water in vapor phase and vaporous water collectors. The method comprises the following steps: arranging five or more than five equidistant measuring lines in a prospect area of a sandstone type uranium mine, arranging a plurality of points with the same point spacing and line spacing, and burying the vaporous water collectors into small pits with the depth of 60-70cm under each point; taking out the vaporous water collectors after being buried for at least10 days; measuring the uranium concentration of condensation water collected by the vaporous water collectors by a plasma mass spectrometer; finally, drawing a chorogram of the uranium concentrations of the soil vaporous water at the uranium mine by a multi-fractal interpolation method, determining a lower limit of uranium anomaly by a statistical analysis method, and inferring a spatial position of uranium mineralization. The method can help effectively detect nano-scale uranium mineralization information originating from a deep part. The vaporous water collectors have simple structure and easy manufacture, and can conveniently collect the vaporous water originating from the deep part.

The invention belongs to the field of an integrated geophysical exploration method and specifically relates to a sandstone type uranium mine integrated geophysical exploration method. The method comprises the following steps: 1, determining a basin depression and uplift zones; 2, dividing a rock boundary so as to determine a favorable uranium mineralization section; and 3, carrying out electromagnetic depth detection, knowing underground geoelectric structure features, and determining sand body spatial distribution and forms facilitating uranium mineralization. By use of such a technical scheme, economic and high-efficiency integrated geophysical exploration means is provided for a basin sandstone type uranium mineralization prospecting region, embedded depth and distribution rules of an underground destination-layers sand body are effectively evaluated, and the method has great realistic significance for geological prospecting work.

The invention relates to a method for removing 226Ra in uranium tail sand and radioactive contaminated soil by plants. The method mainly uses an accumulation plant of the 226Ra, namely a Pieris multifida, to accumulate the 226Ra in the uranium tail sand and the radioactive contaminated soil and simultaneously convey the 226Ra to the overground part of the plant, thereby removing the 226Ra in the uranium tail sand and the radioactive contaminated soil. The method has the following specific steps of: (1) spore germination cultivation; (2) potting seedling; (3) planting the plant in the uranium tail sand or the radioactive contaminated soil; (4) harvesting the overground part of the plant and executing centralized treatment on the harvested plant. The method has the advantages of being convenient to obtain materials, low in cost, high in remediation efficiency, easy to management, simple and convenient in steps, less in environmental risk, and the like, thereby being suitable for removing the 226Ra in the uranium tail sand and the radioactive contaminated soil in uranium mines, uranium water treatment factories, tailings pools and the like.

The invention belongs to the technical field of uranium mine exploration and particularly relates to a method for predicting an ancient valley uranium reservoir by using old seismic data. At present,the main prospecting means and method are drilling, but investment cost is high, the period is long, and a traditional method is difficult to predict the ancient valley uranium reservoir. The method mainly comprises steps of step 1, determining uranium reservoir attributes by utilizing known uranium mine geological drilling data through a construction criterion, a uranium source criterion, a lithology-lithofacies criterion and a rock geochemistry criterion; 2, combining a petroleum two-dimensional seismic section, carrying out fidelity amplitude preservation processing of anterior seismic data, highlighting the shallow seismic reflection information, analyzing an ancient valley seismic facies of a seismic section passing through a known uranium mine hole, carrying out wave impedance inversion according to known well wave impedance and seismic wave spectrum analysis, realizing shallow interpretation and structure identification of a petroleum seismic section, and determining uranium reservoir attributes; and 3, performing combined verification. The method can be used for predicting the ancient valley uranium reservoir.

The invention belongs to the technical field of uranium-coal paragenesis mining, and particularly relates to a method for preventing a decline of an underground water level in uranium mining through in-situ leaching for uranium-coal co-mining. According to the technical scheme, a hydraulic barrier is built on the periphery of a uranium mining district through distribution of water injection drill holes, and when underground water is drained for a coal mine, the decline of the underground water level of the uranium mining district is prevented. The method for preventing the decline of the underground water level in uranium mining through in-situ leaching has the advantages that it can be guaranteed that two resources are mined at non-overlapped districts at the same time, the two resources can be fully utilized, the economic benefit of enterprises is improved, and the recovery of the geological resource is guaranteed.

The invention relates to a process for treating polluted groundwater of a retired mining area of an acid in-situ leaching uranium mine by using a microbial method. The process comprises the follow steps of: pumping the polluted groundwater of the retired mining area from draw holes, carrying out exchange adsorption to process uranium by using ion exchange resin, regulating the pH value of sewage solution to 7 approximately, allowing clear solution to enter a DNB bioreactor first, and reducing nitrate in the solution with DNB, wherein the removal rate of the nitrate is over 95 percent; and secondly, degrading sulfate and removing heavy metal ions of the solution in which the nitrate is degraded with a SRB bioreactor. The removal rate of the nitrate of the processed polluted groundwater is over 95 percent; the removal rate of the sulfate is between 60 and 70 percent, and the removal rate of the heavy metal ions is over 85 percent.

The invention belongs to the field of geological exploration, in particular to a method for determining a forward line of a sandstone uranium mine oxidizing zone through high-precision magnetic measurement. The method aims at rapidly determining the forward line of the interlayer oxidizing zone type sandstone uranium mine oxidizing zone through high-precision magnetic measurement data, thereby determining the uranium mine target area position. The method comprises the steps that high-precision magnetic measurement is carried out on a uranium mine prospecting working area, and magnetic measurement data are obtained; diurnal variation correction, normal field gradient correction, height correction and base correction are conducted on the magnetic measurement data, and a magnetic anomaly delta T value of a measure point is obtained; multi-point data smoothing is conducted on the magnetic anomaly delta T value, and a magnetic anomaly delta T curve is obtained; a plane profile map is drawn by means of the magnetic anomaly delta T value; the areas where the oxidizing zone, a reducing zone and a transitional zone are located are preliminarily distinguished; the start of the transitional zone is located at the position where zero points of magnetic anomaly delta T value are connected, the terminal of the transitional zone is located at the position where turning points from the magnetic anomaly delta T value gradient zone to the smoothly-changed reducing zone are connected, and the position where the turning positions are connected is the position of the forward line of the oxidizing zone.

The invention discloses a method for detecting the uranium content of a plant body. The method is characterized by comprising the following steps of: washing, air-drying and weighing a plant picked up from a uranium-contaminated environment, performing drying, ashing and calcination treatment, and detecting the uranium content of the plant by using microtitration with the reduction of ammonium vanadate by titanous chloride. The method is applied to the detection of a plant sample with the uranium content of 0.003 to 0.03 percent, covers the whole range of the uranium content of all plant bodies to be detected collected in a uranium mine area, is short in detection time, clear in titration endpoint, accurate in result, convenient, low in cost, wide in application range and significant for researches on the environmental management of the uranium mine area, and has a good detection effect; the uranium content of the plant is rapidly detected by using a titration method; apparatuses required by the detection method are simple; the interference of other heavy metals in the plant body to a detection process is avoided; and a standard solution recovery experimental research result shows that a detection error is only 3 / 100,000.

The invention belongs to the technical field of uranium mines, and particularly discloses a method for quickly judging whether a black rock series has uranium-free multi-metal mining value or not. Themethod comprises the steps of: step 1, acquiring a black rock series sample acquisition; step 2, measuring P2O5 content, V, Ni, Cu and Zn element content and the U-Pb isotopic age of black rock series samples acquired in the step 1; 3, judging the phosphorus content of the black rock series sample; 4, judging mineralization elements of the black rock series sample; step 5, and judging the whole rock age of the black rock series sample so as to judge whether the black rock series in the sample collection area has a mining value or not. By means of the method, whether the black rock series of the target area or not can be rapidly judged, so that the prospecting efficiency in the black rock series is improved, and time and capital cost are saved.

The invention discloses an application of amino imidazole type ionic liquid loaded resin in adsorption separation of rhenium or technetium. A solution containing rhenium or technetium is processed through the amino imidazole type ionic liquid loaded resin, and rhenium or technetium in the solution is adsorbed and separated through ion exchange. The amino imidazole type ionic liquid loaded resin has a spherical particle structure, can be used in a wide acid-base range, has very high adsorption capacity for technetium and rhenium, and can meet the requirement for filling and using an adsorptioncolumn in the industry; and on the other hand, when the rhenium concentration is as low as 10 ppb, the adsorption recovery rate of the amino imidazole type ionic liquid loaded resin for the rhenium still reaches 95% or above, and meanwhile, trace rhenium can be separated and enriched from rhenium-containing uranium ore in-situ leaching liquid in a high-selectivity manner. The method is simple, secondary pollution is avoided, and the cost is reduced; the adsorbent is high in regeneration capacity, and capable of being repeatedly used; and the production cost is low and environmentally friendlyand green effects are achieved.

The invention belongs to the field of uranium mine environment treatment, in particular, relates to a method for treating uranium-containing wastewater by TiO2 adsorption-photocatalytic reduction, andaims to provide a novel material for radioactive uranium-containing wastewater treatment. The method is characterized in that a TiO2 photocatalytic reduction technology is introduced into a uranium-containing wastewater treatment process; nano TiO2 is added into the uranium-containing wastewater, the feasibility that the TiO2 treats U (VI) in the uranium-containing wastewater through the adsorption-photocatalytic reduction effect is demonstrated, 99.0% of uranium in the uranium-containing wastewater can be fixed to the maximum extent, and the nano TiO2 can be used as a novel material for treating the uranium-containing wastewater. The method has the advantages of low energy consumption, no toxicity, good selectivity, rapidness, high efficiency, capability of being carried out at normal temperature and normal pressure and the like; the novel material TiO2 is different from other adsorption and reduction materials for treating the radioactive uranium-containing wastewater, has adsorption-autocatalytic reduction dual properties, and can achieve the purposes of uranium-containing wastewater treatment and uranium recovery more efficiently.

The invention relates to a volcanic rock type uranium mine target optimization method based on element geochemical abnormity. The method sequentially comprises steps of: 1), acquiring or collecting element geochemical data; 2), making a single-element geochemical abnormity graph; 3), carrying out mine point projection conversion; 4), indicating element screening; 5), making a thorium-to-uranium ratio geochemical equivalence graph; 6), making a uranium element, auxiliary indication element and thorium-to-uranium ratio geochemical abnormity graph and carrying out projection conversion; 7), determining an abnormity state; and 8), determining a grade of a uranium metallogenic distant-view target area. The volcanic rock type uranium mine target optimization method is suitable for multiple volcanic rock type metallogenic strips and prediction areas in the national scope, has properties of wide coverage scope, high efficiency, strong practicality and good accuracy, further has properties of clear indication elements, strong operationality and standard evaluation method flow, improves evaluation efficiency and guarantees objectivity of the research result.

The invention relates to a plant uranium mining method, which is a method achieved as follows: high-biomass uranium-enriched plants are used for enriching uranium in uranium tailings, tailing residues, uranium waste rock, low-grade uranium mine, and uranium-mineralized soil which are stacked on the ground surface to the overground parts of the plants, the uranium is intensively harvested and driedafter being enriched to a certain extent, and then uranium-containing biologic minerals are formed after the uranium is incinerated at high temperature. The method comprises the following concrete steps: (1) screening the high-biomass uranium-enriched plants; (2) sterilizing seeds; (3) potting, transplanting seeding to uranium-containing substrates; (4) intensively harvesting and drying the uranium after the uranium is enriched to a certain extent in plant bodies; and (5) incinerating the harvested plant bodies at high temperature, wherein ash component generated by incineration are the uranium-containing biologic minerals. The invention has the advantages of convenient material obtainment, low cost, simple processing step, favorable environment, energy saving, no destruction and the like.

The embodiments of the application provide a uranium mine exploration favorable prospective area determination method and device, wherein the method comprises the steps of obtaining the remote sensingdata and the reference data in a target area; according to the reference data, extracting the geological structure information and the drainage information of the target area from the remote sensingdata; according to the geological structure information and the drainage information, determining an acquisition area, and obtaining the characteristic data of the acquisition area; according to the characteristic data of the acquisition area, determining whether the acquisition area is an uranium mine exploration favorable prospective area. According to the scheme, by fully utilizing the remote sensing data to extract the geological structure information of the target area, screening the concrete acquisition area according to the geological structure information of the target area, and then determining the uranium mine exploration favorable prospective area from the acquisition area according to the characteristic data of the acquisition area, the technical problems in a conventional method that the efficiency of determining the uranium mine exploration favorable prospective area is low, and the accuracy is poor are solved, and a technical effect of determining the uranium mine exploration favorable prospective area efficiently and accurately is realized.

The invention belongs to a method for detecting a uranium mine, and specifically discloses a method for detecting a paleochannel type uranium mine. The method includes: four seismic lines in the shape of a Chinese character "feng" are laid; the seismic lines in the shape of the Chinese character "feng" are provided with detectors, an excitation source, and a seismograph; the excitation source is started, seismic vibration signals are generated, and the seismograph is turned on to observe seismic amplitude data received by the detectors; seismic data processing of seismic original single-shot data is performed; seismic data stratigraphic interpretation of seismic result data C is made, and stratigraphic data D is obtained; standardization processing of sound wave data and density data in a research region is performed, and the sound wave data SON_standard and the density data DEN_standard after standardization are obtained; according to C, D, SON_standardj, and DEN_standardj, wave impedance data volume [omega]res is obtained by employing jason inversion software and an inversion method based on a model; and according to the wave impedance data volume [omega]s, preferable mineralization areas of the paleochannel type uranium mine on the four seismic lines are determined. According to the method, the mineralization environment of the paleochannel type uranium mine can be rapidly, economically, and effectively detected.

The invention relates to a method for repairing a uranium (VI) polluted water body by using fungi treated by a nonionic surfactant. According to the method, typical facultative marine mangrove forest endogenous fungus (Fusariumsp.#ZZF51) is used as a material, the mycelium of the material is modified by a nonionic surfactant, namely hexadecyl trimethyl ammonium bromide and then is put into the water body containing uranium (VI) pollutants to repair the uranium (VI) polluted water body, and after a period of time, the material is salved and subjected to centralized treatment. The modified material is rich in uranium (VI) and has strong power, and the removal rate can reach over 90% after the material is put into the water body for 1-3 hours. The modified material floats on the surface of the water body and can be salved and subjected to centralized treatment easily. The method has the economic and technical advantages of low cost, high repair efficiency, environmental friendliness, no secondary pollution and the like and is simple and convenient to operate and manage. The method is suitable for after treatment of various uranium polluted water bodies of uranium mines, hydro-metallurgy factories, various spent ores, tailing leachate and the like.

The invention relates to the technical field of blocking removing of uranium mines, in particular to seepage-enhancing and blocking-removing liquid for uranium mines as well as a using method and application thereof. The seepage-enhancing and blocking-removing liquid for uranium mines is prepared from a comprehensive blocking remover I, a comprehensive blocking remover II and an anti-swelling displacing liquid. During use of the seepage-enhancing and blocking-removing liquid for uranium mines, inorganic scale pollution at a mine barrel and a blast hole segment is eliminated through the comprehensive blocking remover I, and then hydrogen ions are released through the comprehensive blocking remover II to realize deeper penetration of the comprehensive blocking remover II, so that the reaction area is enlarged, barriers in a uranium channel are removed, and the seepage rate of a uranium layer is improved. Finally, damage caused by clay minerals can be prevented and pollution of the immediate vicinity of a wellbore can be eliminated through the anti-swelling displacing liquid. By adopting the seepage-enhancing and blocking-removing liquid, the problem of blocking of the uranium layer is solved effectively, the secondary pollution of stratum can be prevented, the blocking removing effect can be enhanced, and the blocking-removing valid period is prolonged.

The invention discloses an in-situ leaching uranium mine high-power ultrasonic blockage removing and permeability increasing device and method, and relates to the technical field of in-situ leaching uranium mining. The main structure of the device comprises an ultrasonic well washing vehicle, an ultrasonic special cable, a wellhead support, a pulley and an ultrasonic transducer, wherein the wellhead support is arranged at the wellhead of a liquid pumping and injecting well, the pulley is arranged on the wellhead support, one end of the ultrasonic special cable is arranged on the ultrasonic well washing vehicle, and the other end of the ultrasonic special cable bypasses the pulley and then extends into the liquid pumping and injecting well; and the ultrasonic transducer is arranged at the end part of the other end of the special ultrasonic cable. Scales on a filter are oscillated and removed through the ultrasonic transducer, and then compressed air is injected through the air compressor to discharge the scales and water at the same time, so that the scales on the filter and near wellbore zones are safely and effectively removed, the well drilling liquid pumping and injecting capacity is effectively recovered, and influence on the environment is small.

The invention relates to a delineation method for a paleochannel type sandstone uranium reservoir, and belongs to the technical field of uranium exploration. The method comprises the steps of acquiring logging data, core data, seismic data and industrial uranium mine drilling data of a target area; synthesizing the logging data and the seismic data into a seismic record, calibrating a target stratum of the uranium-containing mine, and completing seismic interpretation of the target stratum; delineating a structural slope zone in the seismic interpretation result of the target stratum; delineating an oxidation-reduction transition zone according to the core data of the target stratum; in the delineated structure slope zone, taking the part overlapped with the oxidation-reduction transition zone as a prospective zone; identifying a uranium mine favorable area in the prospective zone according to the industrial uranium mine drilling data; and carrying out wave impedance inversion on the uranium mine favorable zone, and accurately delineating a uranium reservoir in the uranium mine favorable zone. According to the method, the logging data, the core data, the seismic data and the industrial uranium mine drilling data are effectively combined to predict the uranium reservoir, and the prediction result is accurate.

The invention discloses a radon precipitation simulation device based on low-frequency vibration and a radon precipitation rate measurement method. The simulation device comprises a power amplifier, asweep signal generator, a radon precipitation module, a dryer and a radon measuring instrument; wherein the radon precipitation module comprises a vibration exciter, a radon precipitation tank, a topcover, a vibrating rod and a sliding rail. The radon precipitation tank contains a uranium ore rock test block, the vibration exciter is fixed on the sliding rail and connected with the power amplifier, and the vibration rod is arranged between the vibration exciter and the radon precipitation tank. A base platform capable of moving along the sliding rail is arranged on the sliding rail, the radon separation tank is fixed on the base platform, and an airflow loop is formed between the top cover and the radon measuring instrument. The drier is arranged on a pipeline path communicated with thegas outlet of the radon precipitation tank and the gas inlet of the radon measuring instrument. According to the device, the radon precipitation of a uranium mine rock in the low-frequency vibration can be simulated, and experimental data can be obtained. A data basis for researching the change rules of the continuous radon precipitation rate of uranium ore rocks under the action of low-frequencydisturbance loads is provided.

The invention belongs to the technical field of uranium mine exploration, and particularly relates to a sedimentary basin edge strong oil and gas reduction area sandstone type uranium mine distant view evaluation method, which comprises the steps of 1, establishing a stratum table; 2, screening a uranium mineralization target layer; 3, delineating a sandstone-type uranium mine distant view evaluation area range; 4, determining a sandstone type uranium mineralization period; 5, determining the time of first large-scale oil gas spill in the sandstone-type uranium mine distant view evaluation area range; 6, compiling a sedimentary facies diagram of a uranium mineralization target layer in the sandstone-type uranium mine distant view evaluation area; and 7, establishing a sandstone-type uranium mine distant view evaluation model of the basin edge strong oil and gas reduction area of the sedimentary basin. According to the method, factors such as stratums, unconformity surfaces, oil-gas reduction, paleooxidation and sedimentary facies are integrated, the sandstone-type uranium ore distant view of the basin edge strong oil-gas reduction area of the sedimentary basin can be quantitativelyevaluated, and evaluation parameters are provided for sandstone-type uranium ore exploration of the area.

The invention belongs to the technical field of standard substance preparation, and particularly relates to a device and method for preparing a radioactive uranium mine standard substance. The device comprises an electric control cabinet, a feeding tank, an electric conveying system, a breaking box, a ball grinding mill, a discharging box and a work motor. The feeding tank is used for containing candidate samples, obtained after coarse crushing, of the standard substance, the electric control cabinet controls the electric conveying system to make the feeding tank move to the position above the ball grinding mill embedded into the breaking box, the candidate samples of the standard substance are transferred to the ball grinding mill from the feeding tank, the work motor supplies electric power to the ball grinding mill, and the discharging box is connected to the lower portion of the breaking box and used for containing the prepared standard substance. The method comprises the steps of drying, coarse crushing, feeding, grinding and mixing, breaking, discharging and the like. The device and method have the advantages of being automated, free of pollution, free of dust harmful to workers, low in cost and high in grinding efficiency, and the standard substance prepared through the method can accurately represent the natural characteristics of the substance.