87 results about "Radon gas" patented technology

The invention discloses a multipoint dispersive accumulative alpha energy spectrum soil radon-measuring method, which comprises the following steps: A. a measuring point is selected, and a data acquisition unit is buried into the soil of the measuring point; B. after radon gas in the soil is dispersed into a radon gas acquisition chamber of the data acquisition unit, the data acquisition unit is started; C. the data acquisition unit accumulatively collects and measures radon of the measuring point and alpha radiators in daughters of the radon, and then transmits measuring data to an on-scene data management module; D. the on-scene data management module performs statistic analysis on the measuring data, and then transmits the measuring data to a computer analysis module; and E. the computer analysis module further analyzes the data. The method can overcome the defects of the prior soil radon-measuring method, can solve the problems of low measuring efficiency, measuring precision, measuring accuracy and measuring reliability of the soil radon, and can realize qualitative measurement on the radon and daughter nuclide of the radon, thereby being capable of meeting the active demand of the prior geological exploration field and the prior environmental evaluation field on measurement of the soil radon.

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 discloses a method for improving the adsorption quantity of radioactive gases such as radon gas and the like, and is characterized in that adsorption devices (two or more classes) constitute a series circuit, when the radioactive gas adsorbed by the adsorption device (at the previous class) in the circuit is transferred to the adsorption device (at the next class), under the action of a pump and a throttling valve, the pressure of the adsorption device (at the previous class) is lower than an atmospheric pressure, the pressure of the adsorption device (at the next class) is higher than the atmospheric pressure, the pressure ratio of the adsorption device (at the next class) to the adsorption device (at the previous class) is n, and the adsorption coefficient thereof is proportional to the pressure ratio, so that the radioactive gas adsorption quantity of the adsorption device (at the next class) is n times larger than that of the adsorption device (at the next class). Therefore, the aerosols in the air can be filtered, and the radioactive gas in the air can be adsorbed. Because the hydrogen gas is difficult to be adsorbed by adsorbing materials at normal temperature, the high-concentration hydrogen gas from nuclear power plants can be quickly discharged with the qualified air.

The invention discloses a method for mineralizing and cementing uranium tailing slags through montmorillonite/carbonate mineralization bacteria. The method comprises the following steps that through stress induction and irradiation methods, carbonate mineralization strains are screened and domesticated; culture for the efficient screened and domesticated carbonate mineralization bacteria is enlarged to obtain a high-concentration bacterial solution; a test of using the carbonate mineralization bacteria to cooperate with montmorillonite for cementing the uranium tailing slags is developed, andporosity, compressive strength, permeability coefficient and radiation performance parameters of the mineralized uranium tailing slags are detected. The method for mineralizing and cementing the uranium tailing slags through the montmorillonite/carbonate mineralization bacteria has the advantages that the uranium tailing slags can be more effectively subjected to in-situ closing and cured, radon gas migration and diffusion which are caused by disintegration of harmful metal ions and radioactive elements in the uranium tailing slags are blocked from the source, and the curing effect is furtherimproved.

The invention belongs to the technical field of uranium and thorium mineral product prediction and evaluation, and particularly relates to a method for predicting pegmatite type uranium and thorium resources related to alkaline magma, which comprises the following steps: step (1), carrying out geological survey, and clarifying mineral control element characteristics; (2) carrying out surface energy spectrum measurement, and evaluating a surface mineralization distribution range; (3) soil radon gas measurement is carried out, and the deep mineralization abnormal range is evaluated; step (4), carrying out audio magnetotelluric profile measurement, and delineating an ore control structure range; and (5) multi-information superposition is carried out, and the deep uranium and thorium ore body is predicted and evaluated. According to the method, exploration is carried out on the basis of analysis of multivariate information such as geological ore control elements, the concealed ore body can be predicted more accurately, effectively and quickly, the prospecting efficiency is improved, and the exploration cost is reduced.

The invention relates to a porous metal organic framework compound and application thereof in adsorbing a radioactive gas. The preparation method of the porous metal organic framework compound comprises the following steps: mixing zinc nitrate hexahydrate, an imidazole organic ligand and an N, N-dimethylformamide solvent to obtain a mixed solution, wherein the imidazole organic ligand is a mixtureof benzimidazole and imidazole, and the molar ratio of benzimidazole to imidazole is (1: 3)-(5: 1); and performing heating treatment on the mixed solution to obtain the porous metal organic frameworkcompound, wherein the temperature of heating treatment is 60-100 DEG C, and the time of heating treatment is 60-84 h. The porous metal organic framework compound prepared by the method has an efficient and specific adsorption effect on the radioactive gas (especially radon gas).

The invention relates to the technical field of gas adsorption, and discloses an underground engineering radon gas adsorption treatment apparatus, which comprises active carbon beds for radon adsorption or radon desorption, and an air compressor for feeding radon-containing air into the active carbon bed, at least the two active carbon beds are arranged, a throttle valve is arranged between the adjacent active carbon beds, and gas discharge pipelines are connected to the connecting pipelines between each end portion of the throttle valve and the active carbon beds. According to the present invention, after radon-containing air is compressed, the compressed radon-containing air is fed into one or a plurality of the active carbon beds through the electromagnetic valve so as to be subjected to radon gas adsorption; part of the air discharged from the active carbon bed performing radon gas adsorption is discharged through the gas discharge pipeline, and another part enters the adjacent oneor a plurality of the active carbon beds through the throttle valve so as to be subjected to radon desorption; the gas discharged from the active carbon bed performing radon desorption is fed into the compression device through the electromagnetic valve so as to be pressurized, and the other end of the compression device is provided with the active carbon bed used for pressurizing storage and capable of decaying the radon gas; and the gas is subjected to radon decaying by the active carbon bed used for pressurizing storage, and then is directly discharged to the outside world.

The invention belongs to the technical field of radon activity absolute measurement, and specifically relates to a radon activity absolute measurement device. The device comprises an energy spectrum signal measurement and analysis system and an extremely low temperature measurement and control system, which are respectively connected with the top and bottom of a small solid angle measurement roomin a sealed manner. The device also comprises a diffusion-type solid radon source which is in sealed connection with one side of the small solid angle measurement room and provides radon gas for the interior of the small solid angle measurement room. The extremely low temperature measurement and control system can enable the radon gas in the small solid angle measurement room to be condensed intoa condensate radon source. The energy spectrum signal measurement and analysis system can carry out the small solid angle (alpha) measurement of the condensate radon source. The device also comprisesa vacuum measurement and control system for the vacuum pumping of the small solid angle measurement room and the extremely low temperature measurement and control system. The device can measure the energy spectrum and source geometric parameters of the same condensate radon source at the same time, and a detector is not liable to be polluted during multiple measurements, and obtains a standard radon source which does not depend on a radium source standard substance set value, thereby fundamentally improving the uncertainty level 2% (2*sigma) of radon measurement. Moreover, the operation is convenient, and there is no liquid source pollution danger.

A radon test kit includes a housing, a plurality of canisters stored within the housing, a quantity of activated charcoal stored within each of the canisters, a gauge for measuring and indicating humidity mounted within the housing, and a sensor for measuring and indicating ambient temperature mounted within the housing. The ambient temperature sensor also includes indicia to show the temperature. The humidity gauge also includes indicia to indicate the moisture level. The temperature sensor and the humidity gauge measure the temperature and moisture level, respectively, of the test area during the test period so that an accurate calculation of the concentration of radon gas being emitted in the test area may be made.

The invention discloses a surrounding rock loosening circle measuring method based on radon gas precipitation concentration, and relates to the technical field of surrounding rock loosening circle monitoring. The surrounding rock loosening circle measuring method comprises the following steps that firstly, the radon gas precipitation concentration when a test piece is damaged by loading is measured in a laboratory, and a radon gas concentration threshold value is calculated; then, radon gas precipitation concentration values of a plurality of measuring points in the roadway are measured on site; and finally, the radon gas precipitation concentration values of the measuring points are compared with the radon gas concentration threshold value to determine a surrounding rock loosening circle. According to the surrounding rock loosening circle measuring method based on the radon gas precipitation concentration, the radon gas precipitation concentration value of the test piece in the damaged process is obtained through an experiment, the radon gas concentration threshold value when the test piece is damaged is determined, the radon gas precipitation concentration value actually measured on site is compared with the threshold value, the development depth of the surrounding rock loosening circle of roadway is determined, the measuring method is simple, practicality is high, and the cost is low.

The invention belongs to the field of uranium ore geological exploration, and particularly relates to a volcanic rock type uranium polymetallic ore deep ore body detection method, which comprises thefollowing steps: carrying out ore deposit geological investigation, finding out ore control factors and an ore body distribution rule, and researching and judging the development potential of a deep ore body; carrying out deep geophysical measurement to obtain deep volcano mechanism and fault system information, and delineating a deep ore control structure part; carrying out deep radon gas area measurement to obtain deep uranium mineralization information, and judging whether uranium mineralization exists in the deep part; carrying out component element geochemical measurement to obtain deep polymetallic mineralization information, and determining sampling granularity and sampling depth; and carrying out deep ore body prediction and drilling to verify implementation resources. According tothe method, the multi-element deep geophysical detection means, the multi-element deep geochemical detection means and the geological means are combined in order, effective detection of the uranium ore body of the volcanic rock type uranium polymetallic deposit at the depth of 1000 m is achieved, an exploration method system is enriched, the exploration success probability is increased, and the exploration cost is reduced.

The invention provides a scale device for fitting the K value of a scintillation chamber, and the device comprises a diffusion tube which is used for carrying laser marking liquids with different activities and collecting radon gas in a balanced state; an inflation device which is used for inflating the radon gas in the diffusion tube into the scintillation chamber; a scintillation chamber which is used for enabling the radon gas to interact with ZnS atoms on the inner wall of the scintillation chamber to excite and emit fluorescence; an FD-125 radon thorium analyzer which is used for converting fluorescence generated by the scintillation chamber into electrons and realizing multiplication and amplification to generate an electric pulse signal; an FH463B automatic calibrator which is usedfor realizing digital recording according to the electric pulse signal output by the photomultiplier within the selected time; and a scintillation chamber K value curve model fitting device which is used for fitting to obtain a scintillation chamber K value curve according to the digital record values corresponding to the series of laser marking liquids with different activities. According to thedevice, experimental errors caused by selection of the K value of the scintillation chamber are overcome through data obtained through a scale experiment, so that the accuracy of a jet gas scintillation analysis method is improved.

The invention relates to a method for delineating a favorable three-dimensional uranium mineralization part. The method comprises the following steps: acquiring a soil radon gas concentration value; treating the soil radon gas concentration value, and obtaining the abnormal range of the soil radon gas concentration value and the abnormal range of the soil radon gas concentration contrast value; according to the abnormal range of the soil radon gas concentration value and the abnormal range of the soil radon gas concentration contrast value, obtaining the favorable earth surface plane uranium mineralization range; carrying out three-dimensional wide-area electromagnetic measurement work in the favorable earth surface plane uranium mineralization range to obtain three-dimensional wide-area electromagnetic measurement data; calculating apparent resistivity according to the three-dimensional wide-area electromagnetic measurement data; performing three-dimensional inversion on the apparent resistivity data to obtain a three-dimensional resistivity data distribution body; acquiring three-dimensional resistivity distribution characteristics according to the three-dimensional resistivity data distribution body; and according to the three-dimensional resistivity distribution characteristics and uranium mineralization geological characteristics, delineating a three-dimensional uranium mineralization favorable part. Through the method, the favorable three-dimensional uranium mineralization part of the sedimentary diagenetic sandstone type uranium deposit can be rapidly and accurately delineated.

The invention discloses a device for adsorbing radon gas by ZIF-8. The device comprises a standard gas chamber (2) including the radon gas, wherein gas inlets and gas outlets are arranged in the standard gas chamber (2) and interconnected through a gas pipe; an adsorbing device (14), an air pump (8), a flow meter (10) and a gas detector are arranged on the gas pipe (4). The ZIF-8 is used as the adsorbing device, and the porous structure of the device has the good adsorption effect; besides the device adopts a cyclic adsorption form for thorough adsorption, and the radon gas in the radon gas chamber is in the relative steady concentration range.

The invention discloses a stone building ground construction method. The stone building ground construction method comprises the following steps of determining a ground deepening design scheme, and determining a layout plate, lofting control points and feeding of stone to be paved according to the ground deepening design scheme; determining a machining scheme of the stone, and machining the stoneaccording to the machining scheme; and determining a ground paving scheme, and carrying out lofting, paving and radon-proof treatment according to the ground paving scheme. It can be understood that the stone building ground construction method can effectively block the discharge amount of radon gas in the stone and ensure the safety of the indoor environment.

The invention provides a device and process for detecting the content of toxic gas in oil field formation water, and the process is realized by utilizing the device for detecting the content of toxic gas in oil field formation water, and comprises the following steps: the oil field formation water enters a temperature control device according to actual formation pressure and formation temperature; oil field formation water flow enters a hydrogen sulfide sensitive element, a mercury sensitive element and a radon gas sensitive element in the process of passing through the temperature control device, and hydrogen sulfide, mercury and radon gas in the oil field formation water are detected in the hydrogen sulfide sensitive element, the mercury sensitive element and the radon gas sensitive element. And detection is completed when the content values of hydrogen sulfide, mercury and radon gas displayed on the display screen are stable. The device and the process can quickly, accurately and quantitatively determine the content of toxic and harmful gases such as radon gas, mercury and hydrogen sulfide dissolved in the oil field formation water, and related operators can formulate preventive measures in advance according to the determined toxic and harmful gas content result, so that oil and gas safety exploration, development and production and the life health of the related operators are ensured.

The invention provides a gamma energy disperse spectroscopy, which comprises a detection end and a remote monitoring end. The detection end comprises a detection module used for converting gamma raysinto electric signals; a signal processing module used for shaping and amplifying the electric signals outputted by a detector array; a data acquisition and analysis module used for carrying out sampling and analyzing electric pulse signals after being subjected to shaping and amplifying treatment; a temperature detection module used for acquiring the temperature of the working environment; an alarm module used for giving an acousto-optic alarm; a wireless communication module used for realizing data transmission between the detection end and the remote monitoring end; and a microprocessor used for giving an alarm when the temperature exceeds a threshold value. The data acquisition and analysis module, the signal processing module and the wireless communication module are controlled to carry out data processing and data transmission. The remote monitoring end comprises a visual interface and a data processing software. The data processing software comprises a nuclide identification module used for recognizing nuclides, and a radon gas content measuring module used for measuring the content of radon gas.

The invention relates to a method and a system for detecting radium content in liquid based on automatic control, which are characterized in that a liquid sample is pretreated to obtain an evaporated and concentrated liquid sample, the evaporated and concentrated liquid sample is transferred to a diffuser in a radon gas collecting unit, radon gas collection is performed in a scintillation chamber, and the radon gas is collected in a liquid sample collecting unit; the collected radon gas reacts with a coating substance on the inner wall of the scintillation chamber and generates an optical signal; the detection unit converts the received optical signal into an electric signal and calculates the radium content data in the liquid according to the electric signal; according to the method for detecting the content of the radium in the liquid based on automatic control, separation of precipitation and dissolution is achieved through a magnetic heating rotating table, cross interference is avoided, a radon gas collecting unit and a radon gas detecting unit are combined into a whole, radon gas can be directly measured after being collected, and other operation is not needed. The automation degree of the system is high, and harm of radioactive substances to operators is greatly reduced.

The invention belongs to the technical field of a test for diffusion-seepage of radon gas in the internal of radon gas medium, and particularly relates to a multifunctional test device for diffusion and seepage of radon in broken emanation medium. The device comprises a top cover, a multi-layer sample loading barrel body, a porous bottom plate, and a bottom cover of the device. The top cover comprises a stainless steel body, a top cover self-locking quick-connection interface, and a top cover lifting handle. The multi-layer sample loading barrel body comprises a stainless steel barrel body, abarrel body self-locking quick-connection interface, a gas collector, and a barrel body lifting handle. A gas collector is installed in each layer of the stainless steel barrel body. The whole deviceis simple in structure, flexible in installation, convenient to assemble and disassemble, long in service life, and reusable. The sample loading barrel body is composed of six sections of different heights, and can be installed and fed layer by layer in a sample loading process, so that the device is convenient to use. Meanwhile, the height of the barrel body of the test device can be flexibly adjusted, thereby meeting test conditions of the sample under different loading heights and reflecting the flexibility and versatility of the device.

225actinium is produced from 226radium by irradiating a liquid 226radium target by means of protons, deuterons or gamma irradiation in an irradiation device (2) and by extracting the produced 225actinium out of the irradiated liquid target solution in a first extraction device (6). The liquid target solution from which the 225actinium has been removed is then irradiated again to produce further 225actinium therein. The liquid target solution is preferably circulated, in a closed loop (4), over the irradiation device and in a further closed loop (7) over the first extraction device (6). An advantage of such a method is that the irradiated target solution does not need to be dried and re-dissolved to be able to separate the produced actinium from the radium and no further drying and re-dissolving step is needed for producing the liquid target again starting from the separated radium. The radium target can thus be recycled in a more efficient and safer way, especially in view of the radon gas which is continuously produced by the decay of 226radium.

The invention discloses a salt lake deep brine zone exploration method based on radon gas indication, belongs to the technical field of prospecting, and solves the problems of low efficiency and largeinvestment of an existing salt lake region deep brine resource exploration method. The salt lake deep brine zone exploration method comprises the steps of: setting radon gas profile exploration linesin a direction perpendicular to a tensile fault zone on the basis of a distribution range and distribution characteristics of a tensile fault zone in a to-be-explored region; carrying out radon gas measurement to obtain radon gas concentration measurement values of all radon gas measurement points on the exploration line; screening radon gas concentration positive abnormal value measuring points,and projecting radon gas concentration positive abnormal values to a tensile fault zone distribution diagram according to the coordinates of the measuring points; and determining the measuring pointpositions of the radon gas concentration positive abnormal value as the exposed position of a salt lake region brine fault zone on the earth surface, and delimiting the earth surface exposed boundary.According to the salt lake deep brine zone exploration method, the deep potassium-rich and/or lithium-rich brine fault zone and the ground surface exposure position thereof can be quickly and accurately recognized in the salt lake region at low cost, and the layout of deep potassium-rich and/or lithium-rich brine exploitation drilling wells is guided.

A radon gas removal apparatus that is operable to substantially inhibit the entrance of radon gas into a structure. The radon gas removal apparatus is operably coupled to an area to which the structure is superposed. A housing is further included wherein the housing has a lower portion and upper portion mateably coupled. A blower assembly is present within the housing and is mounted in a vertical upright position. The lower portion of the housing includes a bottom having a mount extending upward therefrom to which the blower assembly is operably coupled utilizing a coupling. A fluid aperture is present in the mount and is operable to facilitate the egression of accumulated fluid present at the bottom of the housing into a connected pipe. The housing further includes an air turbulence diffusion member present on an exit aperture formed in the upper portion of the housing.

The invention relates to the technical field of water treatment systems, and concretely relates to a system for removing trace radon gas in water. The system comprises a plurality of radon removal units arranged in series, each radon removal unit is used for completing a section of radon removal process, and each radon removal unit comprises a high-purity gas pressurizing unit, a pressure reduction release unit, a gas-liquid separation unit and a degassing unit which are connected in sequence; and each high-purity gas pressurizing unit comprises a pressurizing device, each pressure reduction release unit comprises a decompression device and a stabilizing tank, each gas-liquid separation unit comprises a storage tank, each degassing unit comprises a degassing device, inlets of the degassingdevices are communicated with the storage tanks, an outlet of each degassing device is communicated with a water inlet pipe of the next radon removal unit, and each degassing unit is used for separating bubbles existing in water from dissolved high-purity gas to complete a section of radon removal process. According to the system for removing the trace radon gas in the water, the radon gas radiation activity in the water is reduced to 0.2 Bq/m<3> or below, so that the natural radioactive background concentration requirement of a neutrino mass sequencing experiment is met, and the system is convenient to use.