231 results about "High pressure" patented technology

The invention discloses a compressed air energy storage indoor simulation test device and method, and relates to the technical field of compressed air energy storage. The device comprises a triaxial pressure servo control system, a temperature control system, an air pressure control system and a multi-parameter measurement system, and can cooperatively simulate the real working environment of the underground gas storage. The triaxial system comprises a high-pressure tank body and a loading device and is used for applying triaxial stress to the rock sample; the temperature control system adjusts the temperature of the rock sample; the air pressure system comprises a high-pressure destructive experiment mode and a low-pressure precise simulation mode, the high-pressure destructive experiment mode is used for carrying out a high-pressure test and verifying the critical burial depth under different geological conditions, and the low-pressure precise simulation mode is used for researching the mechanical behavior, the damage mechanism and the leakage mechanism of the gas storage by regulating and controlling the air pressure and the flow and simulating the inflation and deflation process; the multi-parameter measurement system collects rock sample physical response data in real time. Through cooperative work of multiple systems, response characteristics of multiple support sealing systems under different conditions can be accurately reflected, and the system has remarkable simulation precision, experiment efficiency and cost advantages.

The invention relates to the technical field of fracturing engineering safety monitoring and intelligent early warning, in particular to a fracturing construction monitoring and early warning system and method, and the method comprises the steps: obtaining initial equivalent system resistance and a flow state correction index; constructing a reference physical model; calculating a theoretical pressure value; calculating a deviation index; when the deviation index is larger than a preset dynamic judgment threshold value, geological state inversion is triggered; if the deviation index is smaller than or equal to the dynamic judgment threshold value, returning to the step of collecting the current real-time pressure value and the current real-time displacement value of the high-pressure grouting pump in real time; carrying out reverse solving to obtain updated equivalent system resistance; calculating to obtain a risk index; generating a grading early warning and decision instruction; in response to early warning event confirmation, the initialized equivalent system resistance in the reference physical model is updated to the updated equivalent system resistance; according to the invention, automation and intelligence of early warning and decision making are realized, the construction safety is ensured, and the engineering quality is improved.

The invention provides an ultra-deep high-pressure gas well variable-flow-state sand-carrying capacity evaluation method, and relates to the technical field of oil-gas exploration, and the method comprises the steps: collecting well logging data of a target gas well, constructing a gas-liquid two-phase flow parameter expression, and carrying out the quantitative analysis of key flow characteristics such as the gas content and the speed; a mathematical model is established by applying an H-K flow state judgment criterion, and numerical simulation is performed in combination with fluid dynamics simulation software, so that the flow state in the shaft is accurately identified and distinguished; then, according to high-temperature and high-pressure characteristics under actual working conditions and sand shape information monitored in a mine field, carrying out secondary correction on the resistance coefficient CD so as to improve a sand-carrying capacity prediction model; and finally, the critical sand-carrying flow velocity and yield are calculated based on the corrected model, and a scientific basis is provided for setting the sand-carrying capacity and reasonable production parameters of the gas well in different flow states. Safe and efficient development of a gas reservoir is guided, production parameter setting is optimized, and long-term stable and efficient operation of a gas well is ensured.

The invention provides a method and device for predicting the pile-forming strength of a high-pressure jet grouting pile, and relates to the technical field of pile-forming strength prediction.The method comprises the steps that construction parameters are collected in real time through a multi-source sensor, a construction parameter matrix is constructed, and the soil layer boundary depth and the dielectric constant are obtained through geological radar scanning so as to distribute static weight factors; and calculating an intensity correction coefficient based on geological parameters of the core sample, finally establishing an intensity prediction model fusing the dynamic weight, the slurry solidification time, the temperature influence factor and the geological correction coefficient, and setting a three-level early warning mechanism. The core innovation of the scheme is that construction parameters and geological characteristics are dynamically coupled, the model precision is remarkably improved through double calibration of geological radar and core data, and the problem that a traditional method is insufficient in adaptability to soil layer difference is solved through introduction of a geological correction coefficient; and the real-time closed-loop optimization of the construction process is realized through the multi-sensor time synchronization application.

The invention relates to the field of geotechnical engineering construction, in particular to a deep and large open caisson resistance reducing and sinking assisting system and a cooperative control method, and the system comprises a stratum information base which stores stratum information corresponding to each well wall subarea; the attitude monitoring module is used for acquiring control point coordinates, control point elevation, deflection amount, well bottom elevation, water level in the well, surrounding stratum, sinking speed and blade foot resistance of the open caisson in real time; the thixotropic slurry drag reduction module can independently control the slurry viscosity of each well wall subarea; the high-pressure jet flow sinking assisting module can independently control the jet pressure of each well wall subarea; and the counterweight adjusting module can adjust the counterweight loading amount. According to the method, self-weight sinking, thixotropic slurry drag reduction, high-pressure jet flow sinking assistance and counterweight sinking assistance are covered, cooperative control over all drag reduction sinking assistance systems can be achieved, the construction efficiency of the deep and large open caisson penetrating through the hard soil layer can be greatly improved, the problems that the open caisson construction geological adaptability is poor, multi-system cooperation is difficult, and the accident rate is high are solved, and the construction quality is improved.

The invention discloses a concrete depth performance detection method, and relates to the technical field of concrete performance detection.The device comprises a shell, a top cover, a combined pressurizing mechanism, a combined supporting mechanism, a water inlet pipe, a camera, a controller and a high-pressure water supply device; the method comprises a compressive strength test mode, a permeability resistance test mode and a test piece permeability detection mode after different pressure loads. Through the design, observation and research on permeability change of the test piece after loading can be realized, and data reference is provided for actual engineering. Meanwhile, the device disclosed by the invention can be used for carrying out compressive strength test and permeability resistance test, so that the applicability of the device is effectively improved, the application range is widened, and convenience is provided for in-depth research of concrete performance.

The invention relates to the technical field of hydrogen energy conveying and material performance testing, in particular to a testing structure for hydrogen permeation testing in a high-pressure gas-phase hydrogen environment and an installation method and application of the testing structure. The testing structure comprises a sample body and an insulation sealing assembly, and the sample body is of a double-step disc structure; the uppermost edge of the first sealing insulation assembly is flush with the upper end face of the cylindrical platform, the sample body is installed on the inner side of the first sealing insulation assembly in a matched mode, the second sealing insulation assembly is in a shape with an upward opening, and the first sealing insulation assembly is installed in the second sealing insulation assembly in a matched mode. The test surface of the sample body of the test structure and the gas main flow keep a consistent flow velocity field, and when the test structure is used for testing, the permeation behavior of the hydrogen flow on the material surface can be truly reflected; all the clamping and conducting structures are arranged outside the pipe wall of the test pipeline or at the left part of the sample body, so that flow field disturbance is prevented from being introduced into a main airflow path.

The invention relates to the technical field of high-pressure gas filling, in particular to a high-pressure gas filling equipment temperature anomaly detection method based on wireless sensing. Comprising the steps of constructing a state transition equation and an observation equation; collecting temperature data of a key area in the high-pressure gas filling equipment; the acquired temperature data is preprocessed by using an improved robust adaptive unscented Kalman filter; carrying out local fusion on the preprocessed temperature data based on a serialization fast covariance overlapping algorithm; global fusion is carried out on the temperature data after local fusion based on an improved zebra optimization algorithm; and comparing the global fusion result with a preset threshold value, and outputting a temperature detection result in the high-pressure filling equipment. The method can cope with the extreme environment in the high-pressure gas filling equipment, and ensures the accuracy and reliability of temperature monitoring. Based on the design of the wireless sensor network, the system has the characteristics of flexible deployment, low cost and strong expansibility, and can be widely applied to multi-point temperature monitoring in the fields of energy and chemical industry.

The application relates to the technical field of hydrogen energy transportation and material performance testing, and relates to a test structure for hydrogen permeation testing under a high-pressure gaseous hydrogen environment, a mounting method and application thereof. The test structure comprises a sample body and an insulating sealing assembly, and the sample body is in a double-stage disc structure. The uppermost edge of the first sealing insulating assembly is flush with the upper end surface of the cylindrical platform, and the sample body is matched with the inner side of the first sealing insulating assembly for installation. The second sealing insulating assembly is in an open-upward shape, and the first sealing insulating assembly is matched with the second sealing insulating assembly for installation. The test surface of the sample body of the test structure is kept consistent with the flow field of the gas main stream, and when the test structure is used for testing, the permeation behavior of the hydrogen flow to the material surface can be truly reflected. All clamping and conducting structures are arranged on the outer part of the pipe wall of the test pipeline or the left part of the sample body, so that flow field disturbance is avoided in the main path of the gas flow.

The invention discloses a microjet high-pressure homogenizer, and relates to the technical field of homogenizers, the microjet high-pressure homogenizer comprises a rack, a plunger mechanism and a homogenizing mechanism are mounted on the rack, a servo motor is mounted on the rack, the servo motor is in transmission connection with a curved bar mechanism, and the curved bar mechanism is used for pushing materials to be supplied to the plunger mechanism; and the plunger mechanism is used for primarily crushing the materials under the shearing action. The first-stage material storage barrel is used as a total stock bin to store all materials to be treated, the second-stage material storage barrel quantitatively guides the materials into the third-stage material storage hopper through a gap structure formed by the bottom fixing barrel and the barrel cover and the siphonic effect, and when the liquid level of the materials in the second-stage material storage barrel exceeds the top end of the fixing barrel, the materials in the third-stage material storage hopper are discharged. Siphon is formed through the limiting effect of the atmospheric pressure above the liquid level and the gap flow channel, materials continuously and stably flow into the third-stage storage hopper till the materials in the barrel are completely discharged, and the problem that in a traditional feeding mode, feeding is not uniform due to pressure fluctuation or human intervention is solved.

The invention discloses an automatic high-temperature and high-pressure pressure-maintaining sampling device, relates to the technical field of experimental sampling, aims to solve the problems of experimental interruption, large potential safety hazard, poor environmental adaptability and insufficient precision of deep sea research sampling, and mainly comprises a pressure-maintaining sampling platform, two or more pressure-maintaining samplers, a pressure-maintaining sampling control system and an experimental monitoring system. The whole process comprises the processes of parameter presetting, data acquisition and processing, sampling trigger judgment, abnormity early warning and storage and the like, the pressure-maintaining sampling control system receives an instruction of the experiment monitoring system and drives the pressure-maintaining sampler to complete sampling action, the pressure-maintaining sampler adopts a two-stage sealing structure, a pressure supplementing assembly and a double sample storage area are arranged in the pressure-maintaining sampler, the experiment does not need to be interrupted, and the sampling efficiency is improved. The device can realize automatic and accurate sampling in high-temperature, high-pressure and strong-corrosion environments, guarantees experimental continuity and data authenticity, improves sampling safety and efficiency, and is suitable for deep-sea deep-ground research, ultra-deep oil and gas production and other scenes.

The invention discloses a high-pressure water jet ground breaking depth time history prediction method, and aims to solve the problem that the change of the ground breaking depth along with time cannot be accurately reflected in the prior art. The method comprises the following steps: firstly, obtaining corresponding data of ground breaking depth and time under different conditions through a jet flow ground breaking test, and further performing inversion analysis and constructing a dynamic erosion coefficient function changing along with a dimensionless stress ratio; and then the function is embedded into an ordinary differential equation representing ground breaking dynamics, and a prediction model is established. For a new construction scene, on the premise that jet flow working parameters and soil inherent attributes are known, the model is solved through numerical calculation, and a complete prediction curve that the ground breaking depth develops along with time can be simulated. According to the method, field test requirements can be remarkably reduced, a reliable basis is provided for scheme comparison and selection and parameter optimization in the early stage of construction, and accurate prediction of the ground breaking process is achieved.

The invention belongs to the crossing field of the field of mine water disaster prevention and control and the field of mining engineering, and particularly discloses an underground high-pressure-bearing weak water-rich aquifer grouting method which comprises the following steps: implementing associated drilling; a main grouting hole is formed; forming a water distributing and discharging hole; water pressure monitoring devices and ball valves capable of adjusting the water discharge amount are arranged at orifices of the branch water discharge holes and the main grouting holes; a high-pressure blowout preventer and a closed drainage system are mounted at the opening of the water distribution and drainage hole; a high-pressure grouting system is connected to the opening of the main grouting hole; main grouting holes are formed in the high-pressure-bearing weak water-rich aquifer; opening a water distributing and discharging hole ball valve to discharge water, and continuously monitoring the water pressure; grouting and hole sealing are conducted on the associated drill holes; opening a main grouting hole orifice ball valve, and starting a high-pressure grouting system. The grouting method for the underground high-pressure-bearing weak water-rich aquifer is more scientific, accurate, practical and easy to implement, and can meet the urgent requirements of mine safety production and geological disaster prevention and control.

This invention provides a multi-field coupled shear testing device, including a test host, a pressure chamber, a power distribution cabinet, and a water supply device. The test host is supported by a workbench. The confining pressure chamber, together with the vertical, horizontal, and longitudinal loading systems, applies a three-dimensional static load. Within the horizontal loading system, an impact transmission rod connects to a nitrogen high-pressure emission chamber to achieve impact loading. The sealed high-temperature chamber has a vacuum glass window on the outside, and the internal shear box chassis is raised and equipped with water channels. A membrane is used to wrap the specimen to prevent leakage. The vertical loading system has a built-in cooling device, and an acoustic emission probe is installed on the pressure rod to monitor damage in real time. This device achieves multi-field coupling of high temperature, high pressure, seepage, and impact through modular design, offering high loading accuracy and convenient operation. It solves the functional conflicts and monitoring lag problems of traditional equipment and is suitable for multi-field mechanical property testing of geotechnical materials.

The present invention relates to a method for manufacturing a soluble core for high pressure casting and a soluble core manufactured by the manufacturing method. According to the method for manufacturing a soluble core for high pressure casting according to the present invention, the method for manufacturing a core by dispersing a heat-resistant hard ceramic powder in a water-soluble chemical salt having a melting point 140°C to 260°C lower than a melting point of a cast metal and a heat capacity of 90 J / (mol K) or more is a very useful technology that can easily manufacture a core for high pressure casting of metals such as aluminum and magnesium, and a method for extracting a core from casting can also be simply performed by heating and extracting the core at a temperature equal to or lower than the melting point of the cast metal, and since the core material can be recycled, it is very advantageous in terms of productivity and economy.

The application discloses a kind of high temperature high pressure cylinder sample deformation measuring devices and methods in limited space, belong to rock mechanics experimental testing technical field, solve the sensor adaptability of existing HPHT triaxial test equipment, constrain triaxial chamber volume and the problem of high cost.The rigid measuring rod of traditional LVDT is replaced by inelastic flexible wire in the application, the volume is reduced, so that the triaxial chamber can be more miniaturized, and the first displacement sensor and the second displacement sensor are built-in in the triaxial chamber base, not only need to occupy the internal space of triaxial chamber, so that the triaxial chamber can be designed more compact, reduce the amount of confining pressure oil medium, shorten the temperature rising time, and avoid direct exposure to high temperature and high pressure environment, significantly improve its reliability in high temperature and high pressure environment, while using displacement sensor combined with inelastic flexible wire mechanical transmission scheme to replace imported special sensor, and reduce the cost.

A method for purifying smoke source in tunnel excavation process relates to the field of tunnel engineering air purification, comprising a device box, a negative pressure return air inlet, a pressure fan, a static pressure box, a smoke treatment device, a harmful gas purification device and a high-pressure air curtain system are fixed in the device box, the high-pressure clean air jet formed by the air outlet is sprayed to the drilling and blasting operation face, the high-concentration smoke-carrying air area is targeted, quickly diluted and strongly disturbed, the smoke-carrying air is passively returned to the negative pressure return air inlet grid area on both sides of the device box, the smoke particles are intercepted and purified by the smoke treatment device, the harmful gas is purified by the harmful gas treatment device, and the purified air is pressurized and sprayed by the pressure fan to complete the circulation of the smoke-carrying air on the face; the airflow organization formed by the method has good disturbance effect on the air retention on the face, has good smoke and dust removal effect in a large space or range, and is also suitable for relatively closed space.

The application discloses a kind of high flow rate high temperature steam under sample test piece fixing device, including main rod, front support frame, rear support frame, sliding sleeve, fixed sleeve, two connecting rod mechanisms and bracing plate;Multiple groups of sample test pieces are arranged between the front support frame and the rear support frame, and the corrosion surface of the sample test piece is parallel to the flow direction of the airflow, so that both sides of the sample test piece can be simultaneously subjected to corrosion during testing.Secondly, the sliding sleeve and the fixed sleeve are connected by the two connecting rod mechanisms, the two connecting rod mechanisms are driven to bend and rotate by the sliding sleeve, the bracing plate is in abutment with the pipe wall, and the entire fixing device is fixed with the pipeline by mechanical means.The sample test piece fixing device under high flow rate high temperature steam allows it to not swing or collide violently even under the scouring of high temperature and high pressure steam flowing at high speed, and valuable experimental data of metal materials after running under actual operating conditions of power plants can be obtained.The device is low in cost, easy to operate and convenient to manufacture, and has great significance for studying the oxidation corrosion resistance of metal materials and reducing the probability of accidents caused by oxide scale.

The invention discloses a hydrogen leakage diffusion non-uniform concentration gradient gas cloud minimum ignition energy test and blast-to-pedigree experiment device and an experiment method thereof. Comprising a visual semi-open test chamber, a premixing and flow regulation and control system, a gas temperature regulation and control system, a flow field wind speed regulation and control system, an environment water mist regulation and control system, an adjustable high-pressure ignition system, a non-uniform hydrogen injection system, a data acquisition system, a program control system and a time sequence synchronous controller. According to the hydrogen leakage diffusion non-uniform concentration gradient gas cloud minimum ignition energy test and blast-to-pedigree experiment device, a plurality of gas cloud forms such as local enrichment or concentration gradient advancing along with time can be constructed through cooperation of the position-adjustable non-uniform hydrogen injection system and the premixing and flow regulation and control system, and the injection position and key parameters can be reproduced; and moreover, dynamic monitoring of concentration distribution can be realized through a data acquisition system, and a researcher is helped to establish a corresponding relation of the gas cloud concentration along with time and space changes.

The invention relates to the technical field of rotating target materials, in particular to a normal-pressure atmosphere sintering method of a large-size ITO rotating target material, which comprises the following steps: placing a large-size ITO target material biscuit in a normal-pressure sintering furnace, sealing the furnace body, and then carrying out pre-exhaust treatment in the furnace; a sintering furnace temperature rising program is started, meanwhile, oxygen atmosphere is introduced into the furnace, the oxygen concentration and the gas flow are controlled to be kept stable, and the steps of pre-exhausting, multi-section temperature rising sintering, precise micropore exhausting and oxygen atmosphere cooling are conducted. Normal-pressure oxygen atmosphere sintering is adopted, compared with high-pressure oxygen atmosphere sintering, high-pressure equipment is not needed, the equipment cost and the production risk are reduced, and industrial large-scale production is easier; by controlling the oxygen concentration and flow, high-temperature decomposition of SnO2 is effectively inhibited, the low-resistivity performance of the target material is ensured, the density is larger than or equal to 98.5%, the resistivity is smaller than or equal to 0.12 m omega.cm, the cost is reduced, and industrialization is easy.

This invention relates to a simulation test method for grouting of prestressed concrete bridge ducts, characterized by the following specific test steps: S1: Test design; S2: Equipment and material preparation; S3: Test commencement. This method addresses the problem that common duct grouting construction techniques, processes, and requirements cannot meet the needs of new grouting materials and equipment, such as "grouting from the lowest point." Some construction techniques have theoretical flaws, such as "flushing the duct before grouting and blowing away accumulated water with high-pressure air," and some lack reliable theoretical and practical basis. Therefore, it is necessary to study the influencing factors of duct grouting construction techniques based on current grouting materials, summarize the main factors affecting duct grouting quality, and propose an operable grouting process method.

The invention discloses a method and a system for quantitatively characterizing a fracturing effect of a high-pressure gas well, which are characterized in that a reservoir is evaluated from multiple dimensions by acquiring three key flow data, namely pure matrix open-flow capacity, open-flow capacity before fracturing transformation and open-flow capacity after theoretical fracturing extraction. Calculating the ratio of the natural capacity to the matrix capacity and the ratio of the target capacity to the matrix capacity, and further obtaining the first equivalent fracturing transformation times. And a second equivalent fracturing transformation frequency is also based on the ratio of the target productivity to the matrix productivity. The first equivalent fracturing transformation times and the second equivalent fracturing transformation times are compared, and quantitative characterization of the gas well fracturing effect can be achieved. The quantitative evaluation mode can intuitively tell engineers and researchers that the modification effect of artificial fracturing modification is better, poorer or equivalent compared with the modification effect of reservoir natural fractures. Meanwhile, the quantitative evaluation is also beneficial to comparison among different gas wells, and a basis is provided for selecting a gas well with more potential for development.

The invention discloses a device for changing negative pressure air tightness test pressure difference, which comprises a closed box, a clamping cylinder used for pressing a tested workpiece is arranged in the closed box, a negative pressure test machine is arranged outside the closed box, an exhaust pipe is connected to the negative pressure test machine, the other pipe orifice of the exhaust pipe is arranged in the inner cavity of the tested workpiece, and the other pipe orifice of the exhaust pipe is arranged in the inner cavity of the tested workpiece. The closed box is also provided with a pressurizing air inlet pipe for pressurizing the interior of the closed box; and a pipe orifice, positioned in the closed box, of the pressurizing air inlet pipe is positioned outside the tested workpiece. The invention also discloses an air tightness detection method, which comprises the following steps of: mounting a detected workpiece on the base, starting the clamping cylinder to press the detected workpiece, filling high-pressure gas into the closed box through the pressurizing gas pipe, extracting gas in a cavity of the detected workpiece by the negative pressure tester through the exhaust pipe, and carrying out air tightness detection on the detected workpiece. The closed box is additionally arranged outside a traditional negative pressure test, the environment of the negative pressure test is arranged in the closed box, and the negative pressure exceeding one atmospheric pressure is achieved by increasing the pressure in the closed box.

The invention discloses a few-layer graphene band gap and photoelectric characteristic regulation and control method, and relates to the technical field of photoelectrons. The regulation and control method comprises the following steps: placing a to-be-detected few-layer graphene sample in a diamond anvil cell, and applying pressure to the to-be-detected few-layer graphene sample under a quasi-hydrostatic pressure condition through the diamond anvil cell; carrying out in-situ Raman spectrum detection in the pressure loading process, and judging the structural evolution of the to-be-detected few-layer graphene sample based on an in-situ Raman spectrum; and testing the photocurrent response and the electrical transport performance change of the to-be-tested few-layer graphene sample under an illumination condition to obtain pressure-related photoelectric performance parameters. According to the method, the electronic band gap of the few-layer graphene is effectively opened by utilizing a high-pressure means, and the high-pressure regulation and control means is physical regulation and control, so that impurities or chemical modification is not needed, the process is simple, and the controllability is high.

The application discloses a cylindrical RM instability strength measurement experiment system and method, and belongs to the technical field of fluid mechanics. The cylindrical RM instability disturbance growth material strength measurement experiment system comprises an experiment device and a measurement system; the experiment device comprises a driving sleeve and a preset disturbance target, and the preset disturbance target is coaxially arranged in the driving sleeve. The cylindrical RM instability strength measurement experiment system and method provided by the application can precisely measure the disturbance growth speed, amplitude, interface morphology and other parameters when high-precision impact loading disturbance targets and filling media in the disturbance targets in the driving sleeve cylindrical implosion are carried out, the strength of the material is calculated by using fluid dynamics numerical simulation of different strength constitutive models or parameters and taking the experimentally measured disturbance data as convergence basis, and the established cylindrical RM instability disturbance growth material strength measurement experiment system and method have important significance for the strength research of materials under conditions of high pressure, high strain rate, large strain and the like.

The application discloses a feeding system and a control method, and relates to the technical field of feeding devices. The feeding system comprises a material barrel, a discharging pipe and a material pumping device. The material pumping device comprises an air inlet pipe and a discharging pipe. The discharging pipe, the air inlet pipe and the discharging pipe are in communication with each other. A nozzle is arranged at the end of the air inlet pipe facing the discharging pipe. The nozzle has a channel with a gradually decreasing inner diameter, thereby forming a low air pressure to realize the material pumping function. Moreover, the nozzle extends from the air inlet pipe to the discharging pipe, thereby avoiding the generation of turbulent flow when the material is mixed with high-pressure gas, and reducing the possibility of the material being blocked in the communication cavity. The control method comprises detecting the temperature value and the humidity value in the containing cavity, and comparing the temperature value and the humidity value with preset threshold values. The temperature and the humidity in the containing cavity are kept at stable values suitable for material storage by starting a circulating device and a drying device, respectively. The material is prevented from being bonded due to high temperature and high humidity, or the material is prevented from being condensed due to low temperature, and the material has good fluidity.

The invention discloses a test device and method for measuring true triaxial mechanical and seepage characteristics of coal rock under the action of impact disturbance and gas-thermosolid coupling, and belongs to the field of mechanical characteristics and seepage characteristics of coal rock in the rock burst and coal and gas outburst hybrid dynamic disaster process. The device adopts a modular detachable design, and an electromagnetic pulse bullet launching module, a loading module and an energy absorption buffer module are integrated from top to bottom. The loading module can independently apply three-dimensional stress, high-pressure gas seepage and a high-temperature environment to the cubic coal rock test piece. The electromagnetic pulse bullet launching module can generate impact disturbance with controllable speed and frequency. The invention further provides a using method of the device, the dynamic mechanical response and the gas seepage characteristic evolution rule of the coal rock under the impact disturbance and multi-physical field coupling effect can be synchronously measured, and a key experiment means and data support are provided for revealing the mechanism of composite disasters such as rock burst induced coal and gas outburst.

The application provides an online in-situ low-temperature high-pressure ultrafast spectroscopy device, a system and a method thereof. The high-pressure device comprises a cold shield with an optical window, a metal ring, a gasket, a first pressurized air bag, a second pressurized air bag, a pressurized metal column, a diamond anvil cell, a first temperature sensor, a second temperature sensor, a heat-conducting base, a cryostat and a gas pressure controller. The online in-situ pressure calibration and imaging system comprises a continuous light laser, the high-pressure device, online in-situ pressure optical components and an online in-situ pressure imaging system. The low-temperature high-pressure ultrafast pump-probe system comprises a femtosecond laser, the online in-situ pressure calibration and imaging system, pump-probe optical components and a pump-probe imaging system. The application realizes temperature regulation at 6-325K under high pressure with double air bag pressure regulation, realizes online in-situ free pressure regulation at low temperature, and realizes continuous regulation with an accuracy of 0.1GPa in the pressure range of 0-80GPa, and realizes online in-situ low-temperature high-pressure ultrafast spectroscopy and ultrafast dynamics measurement.