104 results about "Uranium mining" patented technology

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

The invention belongs to the technical field of 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 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.

The invention discloses a coal-uranium collaborative mining circulation supply mining system and an application method, and particularly relates to the technical field of coal-uranium mining and a geological institution.The geological institution comprises a surface layer, a uranium layer, a coal seam and underground runoff, the surface layer is located above the uranium layer, the uranium layer is located above the coal seam, and the underground runoff is located above the coal seam. The underground runoff is located between the surface layer and the uranium layer; and the ground mining mechanism comprises an injection well, an extraction well, a leaching solution preparation tank, a uranium comprehensive treatment bin, a liquid injection pump, a liquid extraction pump, a liquid injection pipe and a liquid extraction pipe. According to the method, partition isolation and staged collaborative proceeding of uranium mine in-situ leaching mining and coal mining are achieved by planning the barrier infiltration reduction mechanism, the overall recovery efficiency of uranium and coal resources is improved, the pollution risk of uranium-containing leachate discharge to the environment is reduced, underground water resources are fully recycled, and the method has the advantages of being environmentally friendly, efficient and safe.

The utility model relates to the technical field of in-situ leaching uranium mining, in particular to a liquid extraction well sealing device for in-situ leaching uranium mining. At present, in the in-situ leaching uranium mining production process, leaching liquid is pumped out mainly through a deep well submersible pump, a pipe, a cable and a rope exist at a well mouth at the same time and are not prone to being sealed, and the risk of silt and rainwater pouring exists. The device is composed of a clamping module and a sealing module, the clamping module is formed by stamping a steel plate and comprises a leachate lifting pipe clamping part, a deep well submersible pump anti-falling rope clamping part and a cable clamping part, and the clamping module fixes a clamped part through the extrusion effect; the sealing module is a circular-truncated-cone-shaped rubber device, the diameter of the upper end of the circular truncated cone is larger than that of the lower end of the circular truncated cone, and the sealing module is provided with a leachate lifting pipe hole penetrating through the upper end and the lower end, a deep well submersible pump anti-falling rope hole and a deep well submersible pump special cable hole. And extrusion deformation is generated between the sealing module and the inner wall of the liquid extraction well pipe by utilizing the self weight of the clamped component, so that the sealing of the liquid extraction well is realized.

The invention relates to the technical field of uranium mine mining, in particular to a uranium mine underground stope uranium mining leaching method which comprises the steps that S1, a target uranium ore body is confirmed; s2, liquid distribution roadways and liquid distribution pipes are constructed, the multiple liquid distribution roadways are formed between a top plate of the target uranium ore body and the uranium ore layer, the trend of the liquid distribution roadways is consistent with the trend of the target uranium ore body, the liquid distribution pipes are installed in the liquid distribution roadways, and multiple liquid distribution holes facing the uranium ore layer are formed in the liquid distribution pipes; s3, a liquid collection system is constructed, and a liquid collection pool is formed between a bottom plate of the target uranium ore body and the uranium ore layer; s4, automatic control is configured and used for monitoring and adjusting the flow and pressure of the leachate entering the liquid distribution pipes in real time; and a second automatic control pipeline is communicated between the liquid collecting tank and the sedimentation tank. The uranium mining leaching method is suitable for a uranium mine underground stope, uranium ore does not need to be carried, the effect that the leachate circularly enters the uranium ore layer is achieved till the uranium-containing ion concentration in the leachate reaches the qualified leachate standard, and the uranium recovery rate is increased.

The application provides an injection and leaching integrated in-situ leaching uranium method, and belongs to the technical field of uranium mining, which is used for solving the problems of low leaching efficiency and poor economy of in-situ leaching uranium. The injection and leaching integrated in-situ leaching uranium method comprises the following steps: determining a well site arrangement mode through numerical simulation, and performing drilling operation of pumping wells according to the arrangement mode; determining an injection pressure according to a theoretical value and an actual value of a formation breakdown pressure; sequentially injecting carbon dioxide, water, oxygen and water into a first group of pumping wells; performing a soaking operation on the first group of pumping wells, and simultaneously performing an injection operation on a second group of pumping wells; performing a soaking operation on the second group of pumping wells, and simultaneously performing a pumping operation on the first group of pumping wells and an injection operation on a third group of pumping wells. The injection and leaching integrated in-situ leaching uranium method can improve production efficiency and recovery rate.

This invention relates to the field of in-situ leaching uranium injection and oxidative leaching technology, and discloses a method for dissolved oxygen injection in in-situ uranium leaching. The method involves adding an oxygen-enriched injection medium containing fatty alcohol polyoxyethylene ether, a second interface conditioning component, a liquid phase oxygen migration conditioning component, and water to the injection water. Under pressurized conditions, the medium is contacted with oxygen for dissolved oxygen treatment, resulting in an oxygen-enriched injection solution, which is then injected into the ore layer. Simultaneously, the composition of the injection system, dissolved oxygen process parameters, and flow rate distribution at each injection point are synergistically controlled to improve oxygen stability and utilization efficiency, reduce the incidence of gas blockage, and enhance uranium leaching stability and uranium mining efficiency.

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 belongs to the field of uranium ore resource mining, and particularly relates to a sandstone uranium ore rock boundary square meter uranium quantity optimization method and device. A traditional mining area mining design generally adopts a fixed boundary square meter uranium amount, considers a single target, and is difficult to adapt to complex and changeable geological conditions and economic environments. The method comprises the following steps: constructing a mining area multivariate information digital library by acquiring geological information of a sandstone uranium mine mining area; implicit interpolation reconstruction is carried out on the mining area multi-source information database to obtain a spatial geometric model, spatial constraint and spatial filtering are carried out, a spatial block model is obtained, geological parameters and economic parameters are further obtained, and an economic benefit and resource benefit coupling multi-target optimization model is achieved and iterative optimization is carried out. The device comprises a graphic display module, a scheme selection module, a parameter input module, an optimization model construction module, an optimization calculation module and a result visualization module. According to the method, boundary square meter uranium quantity optimization based on dynamic economy and resource double targets is realized, and the utilization rate of mineral resources is improved.

This application discloses a method, apparatus, and performance evaluation method for measuring the performance parameters of a downhole filter in in-situ leaching. It relates to the field of uranium mining technology through in-situ leaching, and includes: injecting pure water with added tracer into a simulated injection well of the downhole filter performance parameter measuring device, and measuring the performance parameters of the filter under test in the initial stage; activating the pumping-injection simulation module of the downhole filter performance parameter measuring device, injecting sand-containing fluid with added tracer into the simulated injection well, and extracting it through a simulated pumping well; measuring the performance parameters of the filter under test during the pumping-injection stage; activating the well-washing simulation module of the downhole filter performance parameter measuring device, injecting a gas-liquid two-phase mixture into the simulated injection well to simulate well-washing operation; and measuring the performance parameters of the filter under test during the well-washing stage. This application, by simulating pumping-injection operation and well-washing unblocking, collects performance parameters, enabling effective evaluation of filter performance.

The invention belongs to a precipitation process, and particularly relates to an in-situ leaching uranium mining hydrometallurgy efficient precipitation process. The in-situ leaching uranium mining hydrometallurgy efficient precipitation process comprises the following steps that S1, precipitation is conducted; after the precipitation mother liquor is precipitated for a certain time, extracting the precipitation mother liquor to a precipitation mother liquor storage tank, and stirring; s2, mixing; stirring and mixing; s3, repeating; repeating the steps S1 and S2 for enough times, and then outputting; and S4, blowing and outputting the product. The method disclosed by the invention has the remarkable effects that stable ''111'' product quality is obtained by controlling the density of the precipitation slurry, and the grade of the product reaches the highest grade in the same industry; by controlling the residual metal amount of the precipitation tank, the granular precipitation effect in the precipitation process is improved, and the efficient qualified liquid precipitation process is obtained.

The invention relates to a preparation method of modified nanoscale zero-valent iron and application of the modified nanoscale zero-valent iron to uranium removal in uranium mining and metallurgy wastewater, and belongs to the field of heavy metal pollution remediation. According to the method, nano zero-valent iron is loaded on an amino modified silicon-based material, so that the problems that traditional nano zero-valent iron is easy to oxidize and agglomerate and poor in selectivity are solved. Wherein the modified nano zero-valent iron material comprises nano zero-valent iron and an amino modified silicon-based carrier. The preparation method comprises the following steps: S1, soaking a silicon-based material in absolute ethyl alcohol, adding a modifier, grafting to the silicon-based material, stirring, performing ultrasonic treatment, washing and drying to obtain an amino-modified silicon-based material; s2, preparing a Fe < 3 + > solution, adding the amino-modified silicon-based material, stirring, performing ultrasonic treatment, washing, and performing freeze drying to obtain a precursor; and S3, soaking the precursor obtained in the step S2 in a solvent, dropwise adding a reducing agent in an inert gas atmosphere, carrying out stirring reaction, separating particulate matters, washing, and carrying out vacuum drying to obtain the modified nano zero-valent iron material. The prepared modified nano zero-valent iron material is good in stability, capable of efficiently treating uranium mining and metallurgy wastewater, simple in process and low in cost, and has industrial application potential.

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 environmental functional materials, in particular to polymer reinforced phosphate modified chitosan-SiO2 hybrid aerogel as well as a preparation method and application thereof. The invention provides a preparation method of polymer reinforced phosphate modified chitosan-SiO2 hybrid aerogel. The preparation method comprises the following step: mixing a chitosan-SiO2 network, a phosphate modifier and a polymer reinforcing agent. The material disclosed by the invention has excellent strong acid stability and high adsorption capacity, can be used for efficiently adsorbing and removing U (VI) in a strong acid environment, and has an important application value in the fields of nuclear industry wastewater treatment, uranium mining and metallurgy pollution abatement and the like.

The invention particularly relates to an automatic exhaust device for an in-situ leaching uranium mining liquid injection well, and belongs to the technical field of in-situ leaching uranium mining. The interior of the shell is axially divided into a monitoring cabin, a control cabin and an exhaust cabin which are mutually sealed and isolated; a gas monitoring module is installed in the monitoring cabin and used for monitoring the pressure in a liquid injection well shaft in real time. A mechanical exhaust executing mechanism is installed in the exhaust cabin and used for exhausting gas in a liquid injection well shaft. An intelligent control unit is mounted in the control cabin; the intelligent control unit is electrically connected with the gas monitoring module and the mechanical exhaust executing mechanism and used for driving the mechanical exhaust executing mechanism to be opened or closed according to the pressure in the liquid injection well shaft. The automatic exhaust device for the in-situ leaching uranium mining liquid injection well can automatically, safely, quickly and accurately exhaust the liquid injection well according to the set pressure, so that gas blockage of the liquid injection well is effectively eliminated, the manual operation burden and the safety risk are remarkably reduced, and the production continuity and stability of the liquid injection well are guaranteed.

This invention discloses an automatic switching device and method for surface filters in in-situ leaching uranium mining, belonging to the field of in-situ leaching uranium mining technology. Particle counters and mass flow meters are installed on the inlet and outlet pipes of two bag filters. The pressure gauges on the top of the two bag filters are replaced with pressure transmitters to collect real-time data on the total number of inlet particles, the total number of outlet particles, the inlet flow rate, the outlet flow rate, and the equipment pressure. Based on these multiple data points, a comprehensive judgment is made as to whether to switch the bag filters, and when switching is necessary, the device automatically controls the switching. This invention abandons the previous method of switching based solely on a single pressure value, instead achieving switching based on comprehensive analysis of multiple data points, thus avoiding erroneous equipment switching operations caused by "false pressure increases." Simultaneously, it abandons the previous manual equipment switching method, employing automation to achieve intelligent filter switching, thereby enabling precise and rapid switching of bag filters.

The invention relates to the technical field of coal and uranium mining control, in particular to a coal and uranium integrated mining stratum migration control system and an application method. Aiming at the problem of overlying strata displacement instability caused by mining-induced stress superposition in coal-uranium collaborative mining, the invention provides the following technical scheme: the device comprises a geological mechanism, a coal-uranium production mechanism, a fracturing filling mechanism and a uranium concentration control mechanism; the geological mechanism comprises a surface layer, a uranium layer, a coal seam, a water-bearing layer, a caving field, a fracture field and a stratum subsidence field; wherein the uranium layer is located below the surface layer and soaked in the water-bearing layer, the coal layer is located obliquely below the uranium layer, and the water-bearing layer penetrates through the uranium layer and the coal layer; the coal uranium production mechanism comprises a production control device, a liquid injection well and a liquid pumping well which are connected. According to the method, cyclic utilization of the in-situ leaching solution of the uranium mine reservoir is improved, scientific and technical support is provided for safe, efficient and green mining of coal uranium resources in a mining area, and efficient cyclic utilization and migration inhibition of the uranium resources in uranium mine mining are achieved.

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

The application discloses a method for jointly mining coal and symbiotic uranium mine, and belongs to the technical field of mine exploitation. The method is specifically as follows: a coal mine field is divided into three zones, one wing of the field is a uranium mine preferential mining zone, the other wing is a coal mine mining zone, and the middle part is a protection zone; liquid pumping and injecting wells for in-situ leaching of the uranium mine are arranged in the coal mine underground; then, a coal seam in the coal mine mining zone of the coal mine field is mined, and meanwhile, the liquid pumping and injecting wells for the uranium mine are constructed downwardly by using a mining preparation roadway in the uranium mine preferential mining zone to perform in-situ leaching of the uranium mine; after the uranium mine is mined, the overlying coal seam of the uranium mine is mined, and the underlying coal seam of the uranium mine is mined by using a filling type or in-situ unmanned mining. The method for jointly mining the coal mine and the uranium mine can avoid the influence of uranium mine mining on subsequent coal mine mining, saves engineering quantity, and improves the confidentiality of uranium mine mining.

The utility model relates to the technical field of neutral leaching of in-situ leaching uranium mining, and particularly discloses a liquid leakage alarm device for a neutral leaching oxygenation valve. The device comprises a first check valve, a second check valve, a magnetic balance rolling ball, an induction electrode and a control circuit box, the first check valve and the second check valve are oppositely arranged in parallel, and gas is exhausted after sequentially passing through the first check valve and the second check valve. A magnetic balance rolling ball is arranged in a gas channel perpendicular to a movement route of the first check valve and the second check valve and can roll in the gas channel; the right end of the magnetic balance rolling ball is provided with an induction electrode, and the induction electrode is connected with the control circuit box through a cable. And an alarm signal is triggered through reverse movement of the magnetic balance rolling ball, a worker is reminded to clean the check valve, calcium carbonate precipitation is effectively prevented from being formed in the oxygen pipeline, the equipment use efficiency is improved, the labor cost is reduced, and good economic benefits are generated.

The invention provides a special dissolved oxygen detector for in-situ leaching uranium mining and a dissolved oxygen detection method. The special dissolved oxygen detector for in-situ leaching uranium mining comprises a pressure-resistant machine body, a water-gas separation membrane, a detection assembly, an air blowing assembly and a matched controller, the pressure-resistant machine body is provided with a measuring air chamber, and the outer wall is provided with a passing opening communicated with the measuring air chamber; the water-gas separation membrane is arranged in the through hole and is used for only allowing oxygen to pass through and enter the measuring gas chamber; the detection assembly is arranged in the pressure-resistant machine body, is provided with a detection part extending into the measuring gas chamber, and is used for detecting the oxygen content in the measuring gas chamber; the air blowing assembly is provided with an air inlet end and an air outlet end which are communicated with the measuring air chamber; the gas inlet end is used for introducing nitrogen into the measuring gas chamber so as to discharge oxygen out of the measuring gas chamber; the gas outlet end is used for pumping out nitrogen and residual oxygen in the measuring gas chamber; the controller is electrically connected with the detection assembly. The special dissolved oxygen detector for in-situ leaching uranium mining can detect the concentration of dissolved oxygen in real time in an underground high-pressure environment.

The invention belongs to the technical field of uranium mining and smelting, and particularly relates to a hydraulic spiral slag returning device and method for returning cut slag in an in-situ leaching uranium mining well. According to the device, continuous, active and efficient conveying and discharging of cutting slag in the cutting cavity are achieved through the synergistic effect of the rotating spiral pipe and the drill bit in combination with hydraulic pushing. Compared with the traditional methods such as pure hydraulic flushing and stirring or drill lifting slag salvaging, the device shortens the single slag return operation time to be less than 1 hour, and improves the cut slag return rate to be more than 90%, so that the construction efficiency is greatly improved, and the quality of subsequent well completion operation is ensured.

The invention relates to the technical field of in-situ leaching uranium mining, and discloses an on-line monitoring device of an in-situ leaching uranium mining liquid injection well and a monitoring method.The on-line monitoring device of the in-situ leaching uranium mining liquid injection well comprises a connecting piece, a sealing assembly and a pressing piece, the first end and the second end of the connecting piece are opposite, the first end is provided with a first connector, and the second end is provided with a second connector; the second connector is used for being communicated with a well mouth of a liquid injection well, a liquid injection opening is formed in the third end of the connecting piece and used for inputting a leaching agent, a flowing cavity is formed in the connecting piece, and the first connector, the second connector and the liquid injection opening are communicated with the flowing cavity. The sealing assembly is arranged at the first end of the connecting piece and comprises a first sealing piece and a second sealing piece, the first sealing piece is arranged on the outer side of the second sealing piece in a sleeving mode, the second sealing piece is elastic, and a sealing channel communicated with the first connector is formed by the second sealing piece. The pressing piece is at least partially arranged on the outer side of the first sealing piece, and the pressing piece is used for extruding the first sealing piece in the direction close to the sealing channel.

The invention discloses a dripping liquid distribution method for uranium ore dump leaching in an arid region, and belongs to the technical field of uranium mining and metallurgy. The dripping liquid distribution method comprises the following steps: determining the row spacing and the spacing of drippers through an indoor experiment; a drop-leaching network comprising a main pipeline, a branch pipeline, drop-leaching branch pipes and an anti-blocking tail pipe is arranged on the top and the side slope of the ore heap; a variable-frequency pump is used for conveying leaching liquid and cooperates with a butterfly valve and a pressure control valve to regulate and control pressure; sediment is discharged through the anti-blocking tail pipe regularly, and back flushing is carried out to prevent blocking; and monitoring the liquid distribution uniformity and adjusting parameters by using infrared thermal imaging of the unmanned aerial vehicle. The method has the advantages of uniform liquid distribution, water loss as low as 4.7%, water saving, high efficiency, stable system operation, low dripper blockage risk and uranium leaching rate of over 80%, and is suitable for large-scale uranium ore dump leaching operation in drought, high-temperature and intense evaporation regions.