35 results about "Electro-osmosis" patented technology

The invention discloses a detection kit and method for detecting allergic inflammatory factors based on a centrifugal micro-fluidic chip, and relates to the field of kits, the detection kit comprises the centrifugal micro-fluidic chip and a preset reagent; the centrifugal micro-fluidic chip comprises a chip base body, a sample adding cavity, a liquid level sensor, a liquid level sensor, a liquid level sensor, a liquid level sensor and a liquid level sensor, the nucleic acid extraction and purification cavity comprises a plurality of amplification cavities; a reagent storage chamber; a waste liquid chamber; and a capillary valve. The functions of nucleic acid extraction, variable temperature amplification and multi-target synchronous detection are integrated through the centrifugal micro-fluidic chip, full-closed operation is achieved by means of centrifugal force or other driving force such as air pressure and electroosmotic flow, and the pollution risk caused by manual step-by-step operation is thoroughly eliminated; a multi-wavelength distinguishable fluorescent probe and a grouping preset primer combination are adopted to synchronously complete parallel detection of the allergic inflammatory factor mRNA and the drug accompanying diagnosis target, cross interference is avoided, and large instruments and equipment do not need to be relied on.

The present application relates to a controllable preparation method of a colloidal crystal capillary column and its application in biomolecule separation, and specifically comprises the following steps: a plunger and an electroosmotic pump are prepared in situ at one end of a capillary; a buffer solution containing monodisperse colloidal particles is filled in an upper reservoir of an electric field assembly device, and a buffer solution is filled in a lower reservoir; the capillary is filled with the buffer solution, and the end of the capillary containing the electroosmotic pump is inserted into the lower reservoir; the dispersion of the colloidal solution is maintained by applying oscillation to the upper reservoir, an electric field is applied between the two reservoirs to make the colloidal particles move to the electroosmotic pump under the action of an electroosmotic flow, and a three-dimensional colloidal crystal is assembled; and the capillary is supplemented with an ultrasonic force to reduce lattice defects. The present application has the advantages of simple preparation process, controlled directional movement of colloidal particles through an electric field, improved assembly efficiency and quality of the three-dimensional colloidal crystal, and controllable assembly of the colloidal particles under the action of an electric field through regulation and control of the length and surface charge of the electroosmotic pump.

The present disclosure provides systems and methods for accelerating the aging and / or drying process of making aerogels via the use of an external electric field to induce an electro-osmotic flow inside the pores of an alcogel, rather the relying solely on diffusion-limited mass exchange. To overcome the time and cost of conventional aerogel manufacturing that requires long, involved, and costly processing, the present disclosure provides systems and methods for generating a potential difference across the alcogel to induce advection inside the pores.

The invention discloses a low-voltage polarizable magnetic dielectric microsphere, a preparation method thereof and application of the low-voltage polarizable magnetic dielectric microsphere to adsorption of PFASs, and relates to the technical field of environmental functional materials. The microsphere has a core-shell structure of a conductive magnetic core-dielectric shell, the core is composed of ferroferric oxide and a carbon material, and the shell is a sodium alginate gel layer. The preparation method comprises the following steps: calcining the iron-carbon composite material, mixing a sodium alginate solution, cross-linking calcium lactate / calcium chloride step by step and the like. The microspheres can be subjected to interface polarization under the external 0.2-2 V / cm low-voltage direct-current electric field, a strong local electric field is generated to enhance electrostatic adsorption, meanwhile, the mass transfer and adsorption process of PFASs is synergistically enhanced through electrophoresis and electroosmotic flow effects, the adsorption rate and capacity are remarkably improved, and rapid separation can be achieved through a magnetic field. The material and the method are suitable for efficiently and deeply removing anionic PFASs in wastewater, and have the advantages of low energy consumption, high efficiency, simplicity and convenience in operation and the like.

The invention provides a method and a device for dehydration consolidation and directional migration of sludge containing heavy metals, belongs to the technical field of electric consolidation and heavy metal migration, and solves the problems of low sludge dehydration efficiency, unknown heavy metal migration mechanism and poor removal effect in the prior art. The method comprises the following steps: filling a reaction device with sludge containing heavy metals; graphite electrode plates are arranged at the two ends, and filter paper and a permeable stone isolation layer are laid between the electrodes and the sludge; and applying 0.5-2.0 V / cm direct-current voltage gradient for 12-72 hours, maintaining the environment temperature of 25 + / -2 DEG C, driving pore water to migrate to a cathode through electroosmotic flow, dehydrating and solidifying, and meanwhile, enabling heavy metal cations to migrate directionally by utilizing an electrophoresis effect. The matching device comprises an organic glass box body, an adjustable graphite electrode and a current detection and temperature control system. The sludge dewatering efficiency is effectively improved, the method has wide application prospects in the fields of river sludge treatment, polluted site remediation and the like, and a new technical approach is provided for solving the problem of heavy metal polluted sludge treatment.

The invention discloses an optimization method for an electroosmosis drying model of a composite adsorption regenerated material. The optimization method comprises the following steps: acquiring parameters such as electric field intensity, electrokinetic potential, composite material type and proportion, composite material granularity and particle size, composite material particle density and composite material porosity; establishing an initial electroosmosis drying model of the composite adsorption regenerated material according to the parameters; performing a multi-factor coupling simulation test on the initial electroosmosis drying model to obtain a simulation data set containing an electroosmosis flow rate; and comparing the electroosmotic flow rate in the simulation data set with a preset performance standard, and performing iterative optimization on the initial electroosmotic drying model based on a comparison result to obtain an optimized drying model. Core parameters are efficiently screened through sensitivity analysis, rapid iterative optimization of the model is achieved, the output instructive parameters can provide a reliable basis for material selection and design of an electroosmosis dehumidification device, and the performance and practicability of an electroosmosis drying system are guaranteed.

The application discloses a kind of on-line double-gradient pre-concentration detection methods of soil heavy metal ions based on microchip electrophoresis non-contact conductivity detection, including preparation of the analyte sample to be measured, preparation of high concentration buffer as background buffer, preparation of microchip, microchip electrophoresis process and the like steps.When testing, the background buffer contains 2-(N-morpholinyl)ethanesulfonic acid, L-histidine and electroosmotic flow inhibitor;The analyte sample to be measured contains sample matrix liquid and sample extraction stock solution.Among them, the sample matrix liquid is low-concentration buffer, and glacial acetic acid is used to reduce pH value.In testing, due to the existence of concentration gradient and pH gradient between the analyte sample solution to be measured and the background buffer, the ions to be measured in the sample will slow down and accumulate at the contact surface of the two during migration, realizing on-line pre-concentration, and improving the detection sensitivity of the ions to be measured.The application greatly improves the separation degree of multiple heavy metal ions, and effectively improves the detection sensitivity of heavy metal ions.

The present invention provides a system and method for capturing polynucleotide chains on a defined channel surface. [Solution] The method may include the steps of providing a device having a channel, and providing a sample containing a polymer capable of altering the electroosmotic flow within the channel and a polynucleotide chain to a defined surface of the channel. The method may also include the steps of physically interacting the polymer with a defined surface of the channel, and applying an electric field to the defined surface of the channel to promote physical interaction between the polynucleotide chain and the polymer and to trap the polynucleotide chain on the defined surface of the channel.

Systems and methods for trapping a polynucleotide strand at a defined surface of a channel. Methods may include providing a device including a channel and providing to a defined surface of the channel a polymer capable of modifying an electroosmotic flow in the channel and a sample including a polynucleotide strand. Methods may also include physically interacting the polymer with the defined surface of the channel and applying an electric field to the defined surface of the channel to promote a physical interaction between the polynucleotide strand and the polymer to trap the polynucleotide strand at the defined surface of the channel.

The present invention relates to a method for purifying labeled glycans by electroosmotic flow assisted capillary zone electrophoresis, or a method for on-line electrokinetic purification of a labeled reaction mixture of labeled glycans and free labeling agent, wherein the method is performed in a separation mode, wherein the free labeling agent and the labeled glycans migrate in opposite directions, thereby separating the free labeling agent from the glycans. The method according to the present invention allows for a purification-free capillary zone electrophoresis analysis of labeled glycans. Furthermore, the method allows for separation in a shorter analysis time without the need for a sample purification step.

The application discloses a numerical simulation method of an electrically assisted microbial remediation process, and belongs to a numerical simulation method system. First, a conceptual model, chemical substance setting, initial condition and boundary condition of a research area are determined through initialization research area setting. Then, the number of simulation nodes is set based on grid self-adaptive division. A migration model established by Nernst-Planck-Poisson equation is considered in COMSOL software based on a migration-reaction operator separation method, so as to describe processes such as convection, dispersion, electromigration and electroosmotic flow related to material migration in groundwater. In PHREEQC, the influence of microbial growth on the permeability coefficient and the multivariate inhibition Monod degradation reaction are considered. Finally, the CPM-BIO numerical simulation method is formed by combination, so that the electrically assisted microbial remediation process can be simulated in detail. Compared with existing calculation models, the CPM-BIO can realize the detailed description of the electrically assisted microbial remediation numerical simulation process with multiple dimensions and multiple reactions.

The application relates to a capillary electrophoresis system and method combined with a non-continuous sample injection mass spectrum, wherein the system comprises: an electrophoretic separation-electrospray ionization module for separating components in a target analyte according to different electrophoretic mobilities; a real-time adjustable high-voltage power supply device for providing a voltage required by capillary electrophoresis according to the requirements of an electroosmotic flow and an electrophoretic speed in a capillary; a target component signal feedback module for detecting a target analyte or a real-time electroosmotic flow speed; an electrophoretic current measurement and migration time correction module; a real-time feedback signal processing and control module; and a non-continuous sample injection mass spectrum system. Thus, the problems in the prior art that, when a continuous capillary electrophoresis technology is combined with a non-continuous sample injection small mass spectrum system, the accuracy is reduced, the analysis quality is poor, the sampling frequency is greatly limited, it is difficult to ensure that mass spectrum data at the highest point of a chromatographic peak can be collected, and the sensitivity of detection and the accuracy of quantitative analysis are affected are solved.

A drug liquid transport device (1) according to the present invention comprises: a drive liquid accommodation unit (11) that accommodates a drive liquid (13); a transport liquid accommodation unit (12) that accommodates a drug liquid (18); an electroosmotic flow pump (14) that transports the drive liquid between the drive liquid accommodation unit and the transport liquid accommodation unit; and a needle for injecting the drug liquid supplied from the transport liquid accommodation unit (12) into the skin. The transport liquid accommodation unit (12) comprises: a first chamber that accommodates the drug liquid and that is connected to a needle hole of the needle; and a second chamber that accommodates the drive liquid and is separated from the first chamber by a diaphragm. The drug liquid transport device is configured such that the electroosmotic flow pump transports the drive liquid from the drive liquid accommodation unit to the second chamber to change the capacity of the first chamber, whereby the drug liquid (18) is injected into the skin.

This invention provides a microcurrent rapid drying system and application method for metallic materials, belonging to the field of metallic material processing technology. It aims to solve the technical problems of low drying efficiency, easy oxidation, and uneven drying in traditional metallic materials drying processes. The system includes a chamber with a multi-layer material conveying mechanism. The conveying mechanism includes an insulated shaft drive assembly and a metal screen conveyor belt rotating in the opposite direction outside the chamber. The inner wall of the chamber is equipped with staggered insulating baffles to guide the material to tumble and fall. The system also includes an electrode module, which uses an external power supply and a constant-pressure spring-driven brush slidably connected to the metal screen conveyor belt to provide a microcurrent to the metallic material. An auxiliary module and a gas-liquid treatment module are connected to the outer side of the chamber for material feeding and discharging, drainage, and closed-loop circulation of inert gas. This invention utilizes electroosmosis and Joule heating to synergistically enhance drying, avoiding high-temperature oxidation and achieving rapid, non-destructive, and uniform drying at low or room temperature, significantly reducing drying energy consumption.

This invention discloses a highly sensitive chondrocyte cytoplasmic viscosity probe and its preparation method, belonging to the field of cell probe technology. The method includes: drawing a borosilicate capillary into a nanoparticle with an inner diameter of 70-490 nm; filling the tube lumen with an aminosilane solution and incubating at room temperature to achieve amino functionalization modification; and finally injecting PBS buffer to obtain the probe. Amino modification significantly enhances the charge density of the nanoparticle's inner wall. When the inner diameter of the nanoparticle tip is reduced to 120 nm, the spatial confinement effect significantly enhances the regulatory effect of the enhanced surface charge on ion transport, strengthens the electric double layer effect and electroosmotic effect, and makes the ion current highly sensitive to changes in solution viscosity, thereby greatly improving the probe's response sensitivity to small viscosity fluctuations. The preparation method of this invention is simple and efficient, and the resulting probe has a fast response speed, enabling real-time dynamic monitoring of chondrocyte cytoplasmic viscosity, providing a highly sensitive tool for early warning and mechanism research of diseases such as osteoarthritis.

The invention provides a method for detecting the content of boric acid based on capillary electrophoresis, which is used for analyzing and detecting the content of boric acid in a boric acid sample solution by utilizing the advantages of electrophoresis mobility difference, influence of electroosmotic flow, interaction among separation media and the like of a capillary electrophoresis technology. And the influence of a quality discrimination effect and a memory effect can be effectively eliminated.

The invention relates to the technical field of water pollution treatment, in particular to a method for restoring a river water body by utilizing high-energy potential, which comprises the following steps: S1, generating an external electric field, and establishing an electrophoresis and electroosmotic flow field from outside to inside in the water body around a restoration unit to drive the water body and pollutants to migrate into the restoration unit; s2, performing in-cavity degradation, and performing decomposition treatment on the water body and pollutants migrated into the synergistic reaction cavity in the remediation unit through an oxidation process; s3, state sensing is carried out, the electrical impedance of the water body in the internal collaborative reaction cavity is measured in real time, and a real-time impedance value representing the pollutant treatment load in the cavity is obtained. According to the invention, the water body impedance of the internal reaction cavity is used as a real-time characterization parameter of the pollutant treatment load, and the capture rate of external pollutants and the degradation rate of internal pollutants are dynamically balanced, so that the remediation system can automatically adapt to the dynamic change of river water quality, and the operation stability is improved.

The invention discloses a method for efficiently removing heavy metal ions in livestock and poultry manure, which adopts an eluting agent to form a stable chelate with the heavy metal ions through a coordination effect, realizes efficient total removal of the chelate from a manure solid phase, and breaks through the limitation that only the bioavailability can be reduced by a traditional passivation technology. The manure solid phase is subjected to neutral adjustment and then mixed with straw, a compound microbial agent composed of cellulose decomposition bacteria, nitrogen-fixing bacteria and phosphate solubilizing bacteria is inoculated, aerobic fermentation is carried out, and the high-quality organic fertilizer is prepared; leacheate containing heavy metal is subjected to electric-PRB combined treatment, the heavy metal is promoted to be enriched on a PRB material by utilizing electroosmotic flow and electrophoretic migration, and then phosphorus resources are recovered by a struvite crystallization process. According to the method, the removal rate of copper in the livestock and poultry manure is 96.2%, the removal rate of zinc in the livestock and poultry manure is 91.3%, the removal rate of cadmium in the livestock and poultry manure is 98.0%, the agricultural-grade organic fertilizer and the phosphorus recovery liquid are obtained, the process is flexible, the cost is low, industrialization popularization is easy, and the method is suitable for manure treatment of different livestock and poultry types and pollution levels.

The application relates to a small extracellular vesicle detection method based on a solid-state nanopore and machine learning. The method comprises the following steps: detecting a to-be-detected sample by using a solid-state nanopore chip, making an electroosmotic flow dominate particle capture and a through hole by applying a voltage; collecting a nanopore ion current signal and performing filtering, baseline correction and detrending pretreatment; extracting equivalent charge loss, blocking amplitude, half-residence time, left edge slope and right edge slope of a single event through hole signal; inputting the features into a trained machine learning model to obtain a specific event correlation score, taking a correlation event ratio in a sample as a discrimination index, and realizing detection of target small extracellular vesicles. Compared with an existing detection method which needs labeling and enrichment, the application can realize rapid, label-free and single-particle-level detection analysis in a complex plasma matrix.

The application provides an electric response biomimetic flow guide composite material and a preparation method and application thereof, and a sludge treatment method, and belongs to the technical field of solid waste treatment and water environment treatment. The electric response biomimetic flow guide composite material comprises a porous biomimetic matrix and a polypyrrole conductive layer covering the surface and the pore channel of the porous biomimetic matrix; and a metal adsorption layer loaded on the surface of the polypyrrole conductive layer or the porous biomimetic matrix; and the porous biomimetic matrix has a through capillary channel in the longitudinal direction. The polypyrrole conductive layer and the metal adsorption layer are constructed on the surface and the pore channel of the porous biomimetic matrix, under the action of an external electric field, the synergistic effect of capillary action, electroosmosis and electromigration is realized, the water in the sludge is migrated along the flow guide direction, and the pollutants such as heavy metals are enriched in a specific area, so that the spatial separation of water and pollutants is realized.

The invention discloses a sludge treatment system for hydraulic engineering, and relates to the technical field of sludge dewatering. The system comprises a pretreatment unit, a mechanical dehydration unit and a low-temperature drying unit. The mechanical dehydration unit comprises an anode filter plate, an insulating filter plate and a cathode filter plate which are alternately arranged, the working surfaces of the anode filter plate and the cathode filter plate are covered with elastic conductive diaphragms, and ultrasonic transducers are embedded in the working surfaces of the anode filter plate and the cathode filter plate. An ultrasonic field, a direct-current electric field and a mechanical squeezing field are synchronized in the filter chamber, so that a deep synergistic dehydration effect is generated. Superposed ultrasonic waves can effectively destroy a particle polarization agglomeration structure caused by a direct-current electric field, densification and blockage of a filter cake layer are prevented, and the dehydration efficiency of the electric field is maintained; meanwhile, ultrasonic cavitation and electroosmotic flow synergistically improve the moisture migration rate, and are compounded with mechanical squeezing to form a dynamic drainage micro-channel. According to the system, the water content of the sludge can be further reduced to be lower than 45% with lower energy consumption, and the core problem of filter cake blockage in electroosmosis dehydration application is solved.

The application discloses a three-dimensional packaged silicon carbide power module and a manufacturing method thereof. The three-dimensional packaged silicon carbide power module comprises a silicon carbide substrate, a plurality of first Tesla valve channels are arranged in the silicon carbide substrate, a gold electrode array connected with a dielectrophoresis electrode circuit is arranged at the bottom of the first Tesla valve channel, the gold electrode array at the entrance of the arc-shaped side flow channel of the positive first Tesla valve channel is connected with low-frequency phase-shifted alternating current to generate a traveling wave electroosmotic flow, the gold electrode array at the corner and the outlet of the arc-shaped side flow channel is connected with high-frequency phase-shifted alternating current to generate a traveling wave dielectrophoresis. After the gold electrode array is connected with the phase-shifted alternating voltage signal, an ordered traveling wave form nonlinear alternating electric field is formed in the arc-shaped side flow channel, the gas-liquid two-phase non-uniform polarization is subjected to a net electric field force which is not 0, the gas-liquid surface tension relaxation process is changed, the bubble desorption is promoted, the boiling bubbles in the high-curvature arc-shaped side flow channel are orderly removed, and the two-phase heat dissipation efficiency and stability of the Tesla valve structure are enhanced.

The present application belongs to the technical field of microbial detection and analysis instrument, and relates to a dead angle free sterilization and cleaning biological fermentation system, which comprises an analysis space module, a flow path scheduling module, an interface sensing module and a control optimization module, the flow path scheduling module reconstructs parallel sample flow paths into a single series loop to improve physical flushing load; the interface sensing module applies an alternating polarity voltage pulse with a frequency of 2 Hz to 10 Hz to internal detection electrodes, induces micro zone electroosmotic flow disturbance and peels off adhered polar biological macromolecules; the control optimization module collects real-time electrochemical impedance data, determines a cleaning end point based on the absolute value of the derivative of the impedance modulus relative to the flushing time, and the present application uses phase coupling of interface activity excitation and a circulating flow field to peel off microbial residues on the sensor interface, eliminates the dead zone of the boundary layer, suppresses the detection reference drift, and realizes physical zero of the background signal of microbial screening.

The invention discloses a construction method for reinforcing a soft soil foundation by combining an electroosmosis vacuum preloading method with a cement mixing pile, which belongs to the technical field of building construction and comprises the following steps: S1, foundation pretreatment and survey lofting: leveling and cleaning a soft soil foundation site to be treated, and then performing survey lofting according to a design drawing, the inserting position of the electro-osmosis drainage plate and the pile position of the cement mixing pile are calibrated; s2, shallow layer electro-osmosis vacuum preloading method construction is conducted, specifically, a plurality of electro-osmosis drainage plates are inserted in a shallow layer foundation area according to the designed interval and arrangement form; connecting the inserted electroosmosis drainage plates to a polarity-switchable direct-current power supply system through wires, and electrifying according to a preset program so as to form electroosmosis flow in the soil body; meanwhile, the electroosmosis drainage plate is connected with a vacuum pump system through a water collecting pipe, negative pressure is formed under the sealing film laid on the earth surface, and vacuum preloading is carried out; through the combined effect of electroosmosis and vacuum preloading, drainage consolidation of shallow soft soil is accelerated, and a solidified hard shell layer is formed on the earth surface.

The application provides application of capillary electrophoresis-mass spectrometry online connection, a detection method of tissue plasminogen activator drug heteromer, and relates to the technical field of analysis and detection.The application utilizes online capillary electrophoresis and mass spectrometry connection, separates t-PA through a capillary zone electrophoresis (CZE) mode, uses a neutral coating capillary, uses an acid-water mixed solution or an acid-acetonitrile-water mixed solution as an electrophoresis background buffer, adopts air pressure sampling, applies a separation voltage to perform capillary zone electrophoresis, effectively separates the heteromer in the t-PA drug through CZE, then introduces a mass spectrometer through an electric osmosis flow driven coaxial sheath flow liquid electrospray ion source for detection and analysis, realizes high-efficiency, accurate and high-sensitivity detection of the heteromer in the t-PA drug.Further, the capillary electrophoresis-mass spectrometry online connection detection adopted by the application is short in time consumption, small in required sample amount, and provides a reliable means for evaluating the quality and stability of the t-PA drug.

The invention provides a fabric for controlling surface humidity. In one embodiment, the fabric comprises a moisture collection assembly (1) or a moisture dissipation assembly (2); the moisture collection assembly (1) comprises an outer surface (11) exposed to the environment and an inner surface (12) for contacting the surface, from which moisture is removed by a passive force acting on a capillary network (13) of the moisture collection assembly (1); the moisture dissipation assembly (2) comprises a first electrode layer (24), a second electrode layer (25), one or more porous insulating layers (201) and a power source (23), the one or more porous insulating layers (201) are located between the first electrode layer and the second electrode layer, and the power source (23) maintains a voltage difference capable of driving electroosmotic flow.

Provided is a fluid injection device (10) capable of more effectively administering a drug. The first transport body (11) has a first transport flow path through which a first fluid (21) flows, and the second transport body (12) has a second transport flow path through which a second fluid (22) flows. A front-side microneedle (13) provided to a first transport body (11) has a first opening and a first flow path to which a positive charge is fixed. A negative-side microneedle (14) provided to the second transport body (12) has a second opening and a second flow path to which a negative charge is fixed. When a current / voltage application means (15) applies a current or a voltage between a first electrode (24) disposed in the first transport flow path and a second electrode (25) disposed in the second transport flow path, an ion current flows through the first fluid (21) and the second fluid (22), and by means of an electroosmotic flow, the first fluid (21) flows outward from the first opening, and the second fluid (22) flows outward from the second opening.

The application discloses a method for homogenizing nanopore polypeptide signal and single-molecule protein sequencing. The method captures the polypeptide by using electrophoretic force (EPF) opposite to electroosmotic flow (EOF) as driving force, and determines the sequence of the polypeptide to be detected by detecting and analyzing the electric signal generated when the polypeptide to be detected passes through the nanopore. The method of the application successfully improves the nanopore electric signal of the polypeptide by capturing the polypeptide by using electrophoretic force (EPF) and overcoming the reverse electroosmotic flow (EOF), and improves the discrimination of the nanopore analysis of the polypeptide, thereby providing a new method for polypeptide discrimination, modification identification and protein polypeptide spectrum analysis.

The invention relates to a guide and injection integrated structure, an electric field enhanced oil extraction method and a deployment well pattern. The guide and injection integrated structure comprises a shell, an electrode device and a water injection pipe. Holes are formed in the shell wall of the shell to serve as injection points for water to flow into a target oil layer; the electrode device at least comprises an electrode and is arranged in the shell; the water injection pipe penetrates into the shell, and a water injection hole is formed in the pipe wall of the water injection pipe and right faces the injection point. The guide and injection integrated structure can realize simultaneous conduction and water injection of an underground electrode, an electrochemical effect and Joule heat are applied to an underground oil reservoir, and a stratum direct-current electric field is established to influence a rock medium of saturated fluid, so that the electrochemical effect is generated in a stratum; and meanwhile, the direct-current electric field can generate Coulomb force and electric field force which are far greater than differential pressure force in the immediate vicinity of a wellbore, so that the effects of electroosmotic flow, electrowetting, Joule heat, electromigration and the like are generated in a stratum, and the aims of improving the physical property of a reservoir, changing the property of fluid and improving the recovery ratio of the oil reservoir are achieved.

The invention provides an electric field enhanced dry hot rock mining system and mining method which can be used for geothermal mining and comprises a ground power supply device and a ground circulating system. A high-pressure pump of the ground circulating system injects liquid in a liquid storage tank into an injection well, and liquid extracted from a production well enters a heat exchanger; positive and negative electrodes of the direct-current power supply are connected with the production well and the injection well; when cold front propulsion needs to be delayed and thermal breakthrough needs to be inhibited, the production well is connected with the positive electrode, the injection well is connected with the negative electrode, the electric field direction points to the injection well from the production well, the electroosmotic flow direction is opposite to the pressure-driven Darcy flow direction, the overall flow velocity can be weakened, and thermal front propulsion can be delayed; when heat exchange needs to be enhanced or short-term heat production capacity needs to be improved, polarity is switched to enable electroosmotic flow and Darcy flow to be in the same direction, and therefore fluid circulation is accelerated. The external direct-current electric field is applied to the reservoir, transmission of fluid and heat is actively adjusted through the electroosmotic flow effect, and therefore thermal breakthrough is effectively delayed, the geothermal recovery efficiency is improved, and the service life of the system is remarkably prolonged.