745 results about "Blast wave" patented technology

The invention discloses a shock wave overpressure field global measurement method based on multi-view image fusion, belongs to the technical field of explosive shock wave measurement, and is suitable for weapon equipment power evaluation and blasting safety analysis. The method comprises the following steps of: synchronously acquiring a time sequence image of the whole explosion process through a distributed multi-view high-speed imaging system, preprocessing the image by adopting pixel-by-pixel comparison, square operation enhancement and normalization processing, and positioning a shock wave edge contour; the blasting center coordinate is positioned through binocular parallax, the shock wave initial radius is determined by combining spatial domain analysis, and the key feature points of the front and rear edges of the wavefront are detected by using a dynamic search window and a radial gradient field. Based on multi-view constraints, a three-dimensional point cloud is generated through direct linear triangulation, and a three-dimensional wave front form is reconstructed in combination with least square spherical fitting. And finally, constructing a wavefront radius-time evolution model, and deducing a quantitative relationship between the instantaneous propagation velocity and the peak overpressure in combination with a Ranki ne-Huton iot relationship, thereby realizing the global high-precision calculation of the overpressure field.

The invention relates to the technical field of fault diagnosis, in particular to a contact mechanical wear and fault diagnosis system which comprises a data acquisition module, a wear diagnosis module, a contact surface detection module, a buffer judgment module and a composite diagnosis module. According to the method, the three-phase opening time sequence, the resistance instantaneous value, the pressure signal and the shock wave envelope are aligned and fused according to the millisecond timestamp, the multi-source data time sequence consistency and the linkage feature recognition capability are improved, the statistical correlation between the operation time and the resistance difference value is calculated through covariance, the dynamic judgment precision of the abrasion process is enhanced, and the accuracy of the abrasion process is improved. Based on pressure quadrant division and gradient ratio extraction, spatial positioning features of contact surface depression are determined, the ratio of shock wave change rate to duration is extracted, sensitive recognition of buffer performance changes is enhanced, multiple types of diagnosis results are fused to form an overlapping analysis path, and accurate recognition and logic attribution of composite fault types are achieved.

The invention relates to the technical field of tunnel construction, in particular to a tunnel blasting quality evaluation method based on multi-source data fusion, which comprises the following steps: synchronously acquiring multi-source data such as blasting vibration waveform, shock wave overpressure, dust concentration time sequence and excavation face image through a sensor network and image acquisition equipment arranged in a tunnel; performing preprocessing and time sequence alignment on the data to form a standardized data sample set; multi-dimensional feature vectors representing the blasting effect are extracted from the multi-dimensional feature vectors respectively; fusing various features into a high-dimensional feature vector, training a machine learning model by using historical data and quality grade labels evaluated by experts to establish a mapping relationship between the features and quality grades, and constructing an intelligent evaluation model; and online automatic evaluation and visual result output of the new blasting event are realized. According to the invention, automation, objectization and systematization of blasting quality evaluation are realized, and an efficient and reliable data-driven solution is provided for tunnel construction quality control.

The invention discloses a bionic joint humanoid robot navigation positioning method, device and equipment, and the method comprises the steps: monitoring a landing shock wave signal and reflection echo data of a robot, carrying out the time domain expansion of the shock wave signal to form a pulse characteristic spectrum, extracting multipath propagation components, and carrying out the time difference correlation to generate an environment response value. Screening a direct wave component by using an environmental response value, positioning a sound wave propagation trajectory, and detecting impedance mutation to construct an acoustic matrix. A strong reflection zone is identified through node analysis, a sound pressure gradient field is extracted to determine an obstacle boundary, and a landmark feature bit is determined in combination with an environmental response value. And adjusting a dynamic stride frequency interval based on a landmark feature bit, forming an adaptive detection sequence, and performing sparse processing to construct path configuration. The mechanical vibration component of the shock wave signal is used for piezoelectric conversion to generate recycled electric quantity, the recycled electric quantity is matched with path configuration power to determine a sensing period, intermittent sensing is executed to obtain detection data to construct a detection convergence field, and finally an accurate positioning window is determined and converted into position coordinates.

The invention provides a laser plasma sound barrier and magneto-rheological antiknock array collaborative protection method. The method comprises the following steps: firstly, constructing a collaborative protection structure consisting of a laser plasma sound barrier layer and a magneto-rheological antiknock array layer; a shock wave leading signal is detected in real time and input into a preset multi-dimensional feature model, the model dynamically generates a protection strategy, and a sound barrier instruction and an anti-explosion instruction are output respectively. The laser plasma sound barrier layer outputs specific reverse sound waves according to a sound barrier instruction and attenuates shock waves through destructive interference; meanwhile, the magneto-rheological anti-explosion array layer instantaneously solidifies a magnetic field according to an anti-explosion instruction, and shock wave energy is efficiently absorbed. According to the laser plasma sound barrier and magneto-rheological anti-explosion array cooperative protection method provided by the invention, the cooperative protection structure and the preset multi-dimensional feature model are constructed, so that the cooperative effect of the sound barrier and the anti-explosion array is realized, the response speed to shock waves is increased, the energy processing efficiency is improved, and the adaptability and reliability of protection are enhanced.

The invention discloses a mine blasting safety monitoring and early warning system, which comprises a multi-source sensing module, an edge computing node, a dynamic risk assessment module, an intelligent early warning decision module and an emergency linkage execution module, and is characterized in that the multi-source sensing module acquires multi-dimensional data such as blasting vibration, shock waves and toxic gas through various sensors; edge computing nodes filter noise and extract time-frequency features; the dynamic risk assessment module inverts blasting energy based on vibration and shock wave data, and predicts secondary disasters in combination with a geological model and gas concentration; the intelligent early warning decision module dynamically adjusts an early warning threshold by using a deep learning model and fusing multi-modal data; the emergency linkage execution module executes instructions such as power failure and evacuation according to devices such as early warning level, linkage ventilation and personnel positioning, overcomes the defects of traditional single monitoring and lack of correlation models, realizes full-process and all-directional monitoring of blasting operation, and effectively improves the safety of mine blasting operation and the efficiency of emergency management.

The invention discloses a primary support early-age sprayed concrete safety assessment method under cyclic blasting load, and relates to the field of concrete reliability analysis, and the method comprises the following steps: determining geometric parameters of a to-be-protected tunnel, and establishing a tunnel finite element model; determining a blasting load by using a detonation wave theory, and applying the load to the model for finite element analysis to obtain residual deformation data of each extraction point; determining a blasting load influence range; monitoring the environment temperature time sequence data of the evaluation sub-section, and representing the hydration degree and the water content of the evaluation sub-section; according to the method, the mapping relation between the mechanical characteristic parameters and the hydration degree and the water content is established, the mechanical characteristic parameters of the concrete are calculated, the safety of the sprayed concrete is determined by comparing damage with a safety difference standard, and the scientificity of safety evaluation of the sprayed concrete is improved.

The invention belongs to the field of electric digital data processing, and relates to a method for evaluating damage of long-lasting shock waves to an engineering target by considering environment temperature, which comprises the following steps of: calibrating normal-temperature constitutive model parameters; establishing a normal-temperature long-duration explosion numerical simulation model; calibrating constitutive model parameters at different temperatures; establishing a different-temperature explosion numerical simulation model, and performing explosion process numerical simulation to obtain different-temperature numerical simulation damage data; substituting the simulated damage data into a classical P-I curve expression for fitting, and establishing a P-I curve damage criterion expression at different temperatures; substituting the temperature empirical formula into a P-I curve damage criterion expression at different temperatures to obtain a damage criterion considering the temperature effect; and based on the damage criterion considering the temperature effect, completing the damage assessment work according to the characteristics of the to-be-assessed engineering target and the environment temperature. The method does not need to depend on physical tests, and can efficiently complete engineering target damage assessment under the action of long-lasting explosive shock waves through a numerical simulation technology and algorithm.

The invention discloses a shock wave overpressure field reconstruction method based on physical information, and relates to the technical field of artillery launching, and the method comprises the following steps: building a multi-scene overpressure empirical formula library comprising a Henrych formula, an M.A.Sadovskyi formula and national defense design specifications, and embedding physical prior knowledge into a neural network for training through a weighted loss function; an attention module with a channel-space cooperative enhancement capability is formed by fusing the one-dimensional efficient channel attention, the extrusion excitation network and the dimension reduction CBAM; according to shock wave propagation characteristics, a forward shock wave field subtask and a muzzle rear wave front subtask are divided, and regional prediction is achieved through dynamic characteristic routing; and optimizing network parameters by adopting a low data volume training strategy, and outputting overpressure peak field distribution. According to the method, through construction of a physical data fusion constraint mechanism and an EC-SEAM mixed attention mechanism, network physical interpretation and near field mutation feature extraction capability are improved, and dependence on labeled data is remarkably reduced.

The invention relates to the technical field of geological exploration, in particular to an underground environment data acquisition method and system for three-dimensional simulation environment modeling, working condition parameters are acquired and input into a CFD model, and an underground dynamic risk map is generated based on shock wave signals; the method comprises the following steps: collecting water mist data to construct a humidity field, and embedding humidity field data into a dynamic risk map generation process, which comprises the following steps: in an injection compression period, solving an N-S equation set, detecting and encrypting a key area grid through a pressure gradient, and generating a burst dust cloud form and density distribution. The results of four stages of turbulence evolution are fused to form a five-dimensional tensor structure including space coordinates, duration time, humidity compensation risk levels, a water film distribution thermodynamic diagram and a water mist light attenuation coefficient, different risk areas can be clearly marked, switching of data acquisition strategies is guided, the problems of artifacts and distortion are effectively solved, and the accuracy of data acquisition is improved. Accurate point cloud data can be obtained in a complex environment.

The invention relates to a negative Poisson's ratio composite anti-explosion wallboard unit, an anti-explosion wallboard structure and a construction method of the anti-explosion wallboard structure. The anti-explosion wallboard unit comprises an impact protection layer, a negative Poisson's ratio steel plate layer, a multifunctional back plate layer and a buffering energy absorption layer from outside to inside. The outer surface of the impact protection layer is an anti-impact wave curved surface; the negative Poisson's ratio steel plate layer is composed of two layers of negative Poisson's ratio steel plates which are arranged in parallel, a containing cavity is formed in each layer of negative Poisson's ratio steel plate, a plurality of rhombic negative Poisson's ratio units are evenly distributed in each containing cavity, and hinge joints are formed between the end points of the rhombic negative Poisson's ratio units and the inner wall of a cavity body of each containing cavity; the multifunctional backboard layer comprises a support body and an assembly space arranged along the back surface of the support body, and the assembly space is used for detachably embedding a functional board; and the buffer energy absorption layer is used for absorbing and dissipating residual energy attenuated by the layers. Through a multi-stage collaborative energy consumption mechanism of curved surface deflection, negative poisson ratio structure energy absorption, back plate dispersion and elastic body buffering, the anti-knock performance and the energy dissipation efficiency of the wallboard are remarkably improved.

This invention relates to the field of blasting testing technology and discloses a method for quantitatively representing intrusive blasting waves within a double-layer curtain wall space. The method includes establishing an experimental system, creating a basic model of the double-layer curtain wall structure, conducting blasting experiments, verifying the accuracy of the LS-DYNA simulation software's simulation of the experimental content, and parameter analysis. The parameter analysis includes quantitative analysis using blasting wave intensity, intrusion hole height H, and the distance C between the outer and inner curtain walls as variables. Through finite element simulation, combined with extensive data and theoretical analysis, a method for calculating the peak pressure of the intrusive blasting wave inside the structure is derived. This method for quantitatively representing intrusive blasting waves within a double-layer curtain wall space has the advantage of ease of use. It allows for the exploration of the blasting wave pressure inside the structure and the corresponding implementation of structural protection designs, effectively improving the scientific rigor and reference value of internal structural protection designs, and making a significant contribution to the stable management of structural safety.

The invention discloses an explosion shock wave parameter prediction method and system based on a physical information neural network, and the method comprises the steps: obtaining an explosion shock wave overpressure data set of a thermobaric explosive in an open space through refined numerical simulation, and dividing the overpressure data set into a training data set and a verification data set; a specific scene is used for solving an N-S equation as a physical problem, and a mass conservation equation and momentum conservation equations in the X direction and the Y direction are involved. A neural network with no less than four hidden layers and no less than 100 neurons in each layer is constructed, the hidden layers adopt a Tanh function, an output layer uses a Softplus function to ensure non-negativity for shock wave pressure P and density rho, and speeds U and V are unconstrained. The loss function comprises a data error term and a physical information error term, the total loss function is formed by adding the data error term and the physical information error term according to weights, and specific scene boundary conditions are set. A prediction model is established based on a training result, and especially in a complex fluid scene, the method can rapidly and accurately predict an explosion shock wave overpressure field and a distribution rule.

The invention discloses a transformer arc fault equivalent test device and a control method, and relates to the technical field of power equipment fault simulation and safety test, and the method comprises the steps: carrying out the corresponding high-pressure gas storage through a high-pressure gas storage unit according to target pressure data calculated by a choking flow dynamic coupling model; the quick release unit is used for matching fault duration according to the test trigger instruction so as to release the high-pressure gas stored in the high-pressure gas storage unit; the energy injection unit injects high-pressure gas into the test oil tank to form shock waves; the safety protection unit starts an interlocking protection mechanism based on the test data; the monitoring control unit controls each unit to act, monitors the operation process of each unit in real time, and obtains and identifies the validity of test data to optimize the test process; according to the invention, automatic test process control is realized, the arc fault key damage effect can be accurately quantified and reproduced, high-precision matching of pressure wave time domain characteristics is realized, and the reliability of a test result is ensured.

The invention discloses an underwater explosion near-field shock wave indirect measurement device in a limited space, a measurement method and an installation method, belongs to the technical field of explosion shock wave load measurement, and solves the technical problem that near-field shock wave measurement and free-field shock wave decoupling measurement cannot be realized due to direct action of strong shock waves and interference of reflected waves in the prior art. The device is of a shock tube type structure and comprises a measuring structure head round tube, a measuring structure tail round tube, a sensor tail bypass extension round tube, a sensor head bypass extension round tube, an underwater explosion free field sensor, a sensor tail bypass round tube and a sensor head bypass round tube. And the tail part of the underwater explosion free field sensor extends into the sensor tail part bypass extension circular tube, and the head part of the underwater explosion free field sensor extends into the sensor head part bypass extension circular tube. The method is suitable for the field of impact measurement of underwater explosion and can be applied to the field of performance evaluation of underwater explosion sources.

The invention relates to a pressure static calibration method based on cavitation collapse and an R-P equation. In order to solve the problem of calibration result deviation caused by a traditional static calibration method of a high-dynamic-performance pressure sensor, the method provided by the invention takes transient pressure shock waves released in a cavitation collapse process as an excitation source, and the pulse width of the pressure shock waves released in the process is about 1 microsecond; the frequency band blank of microsecond-level static calibration is filled, a first-time cavitation collapse pressure peak value obtained through calculation in combination with a Rayleigh-Plesset equation and a dissipation formula of pressure shock waves in liquid is compared with a first-time cavitation collapse pressure peak value received by a pressure sensor, a pressure peak value difference value at the moment is obtained and serves as a peak value compensation error of the pressure sensor, and the frequency band compensation error of the microsecond-level static calibration is calculated. And completing calibration.

The present invention discloses a method for correcting explosive initial conditions for numerical simulation of underwater explosions. The explosive is approximated as a sphere, and a computational model for a free-field spherically symmetric underwater explosion is established. Initial parameters of the explosive, including initial density and initial internal energy per unit mass of the explosive, are input into the JWL equation of state to obtain preliminary pressure-time curves at different spatial positions. The peak value of the shock wave pressure is extracted and compared with the results of an experiment or empirical formula. If the error does not exceed 5%, the initial internal energy per unit mass of the explosive is maintained unchanged; otherwise, the initial internal energy per unit mass of the explosive is adjusted until the error does not exceed 5%. The bubble pulsation period is determined and compared with the results of an experiment or empirical formula. If the error does not exceed 5%, the initial density of the explosive is maintained unchanged; otherwise, the initial density of the explosive is adjusted until the error does not exceed 5%. The present invention can accurately predict the peak value of the shock wave pressure and the bubble pulsation period, has the advantages of low cost and high efficiency, and can provide more accurate load input for the calculation of three-dimensional underwater explosion models.

The invention discloses a test device and method for simulating an ultra-high-speed penetration ground impact effect, and the device employs a static load loading system to apply a static load to the periphery of a sample so as to simulate a ground stress environment, and employs a dynamic load loading system to apply an impact dynamic load to the top of the sample so as to simulate ground impact. In the dynamic loading system, a phase change reaction kettle is used for heating liquid CO2 to a supercritical high-pressure state; the liquid filling module is used for filling liquid CO2 into the phase change reaction kettle; the gun barrel is used for receiving high-pressure gas released by the phase change reaction kettle and forming ground shock waves similar to a plane; the stress wave lens module is used for adjusting the width of shock waves through a stress wave lens combination and acting the shock waves on the sample; the control module can control the shock wave peak pressure by regulating the heating power of the phase change reaction kettle, and can control the duration time of shock waves by regulating the bore diameter of the gun barrel. According to the invention, controllable and high-fidelity simulation of the ultra-high-speed penetration impact effect is realized.

The invention discloses an explosive wave simulation device and method based on gas combustion driving, and solves the problems that in the prior art, electric heating energy consumption is large, a gas detonation method generates detonation waves and an extremely high pressure peak value, the waveform of shock waves is affected, and pressure bearing of equipment is challenged. The explosive wave simulation device based on gas combustion driving comprises a combustion driving section, a contraction and expansion section, a driven section, an ignition device arranged on the combustion driving section and a diaphragm arranged between the driving section and the contraction and expansion section. Combustible mixed gas is contained in the combustion driving section, a shape adjusting cushion block is embedded in one end of the combustion driving section, the radial sectional area of the inner space of the shape adjusting cushion block is sequentially increased from one end to the other end in the axial direction, and the other end of the combustion driving section is connected with the inlet end of the contraction and expansion section. An ignition opening is formed in the combustion driving section; the outlet end of the contraction and expansion section is connected with the opening end of the driven section; an ignition head of the ignition device penetrates through the ignition opening; and the driven section is used for installing to-be-tested equipment.

The invention provides a novel detonation flame arrester which comprises a first shell, and an inlet is formed in the first shell; the third shell and the first shell are symmetrically arranged, and an outlet is further formed in the third shell; the second shell body is arranged between the first shell body and the second shell body; the fire retardant unit is connected in the second shell in a sliding manner; a first spring connected with the first shell is arranged on one side of the fire retardant unit, and a second spring connected with the third shell is arranged on the other side of the fire retardant unit. When explosive shock waves enter the detonation flame arrester, the flame arresting unit slides under the explosive shock, compresses the first spring and stretches the second spring, or stretches the first spring and compresses the second spring.

The invention provides a detonation pressure optical testing device for a micro-dose powdery explosive, which comprises a rotating mirror type scanning camera and an explosive detonation unit, and is characterized in that the rotating mirror type scanning camera is used for collecting a shock wave motion trail image when the powdery explosive is detonated; the explosive detonating unit comprises an organic glass column body and a high-pressure exploder, an explosive charging hole with an open top is formed in the organic glass column body in the axial direction, a stress wave adjusting rod is arranged in the explosive charging hole in a penetrating mode, and the bottom face of the stress wave adjusting rod can make contact with powdery explosives charged into the explosive charging hole; a first detonating hole and a second detonating hole are coaxially formed in the organic glass column body in the radial direction, and both the first detonating hole and the second detonating hole communicate with the charging hole; the heating wire penetrating through the first detonating hole, the charging hole and the second detonating hole can make contact with the powdery explosive in the charging hole, and the two ends of the heating wire are connected with the positive electrode and the negative electrode of the high-pressure exploder correspondingly. According to the invention, a traditional detonation mode is not needed, the interference of the detonator and the explosion expanding explosive on the measurement process of the sample with the small explosive quantity is solved, and the test convenience and the test precision are improved.

The application discloses a coal rock anti-burst method of large-range seam forming by remote controllable shock wave and hydraulic fracturing, and comprises the following steps: step one, detecting and recording the stress concentration degree of target coal seam or rock stratum; step two, drilling; step three, withdrawing the hollow drill rod, arranging the discharge electrode connected with the cable at the front end of the hollow drill rod, and sending the discharge electrode into the drill hole through the hollow drill rod; step four, sealing the hole by using a hole sealer and performing hydraulic fracturing; steps five to seven, completing multiple repeated electric pulse discharge operations; and step eight, testing the pressure relief effect of the coal seam or rock stratum. The method uses the drilling cuttings method, high-pressure hydraulic fracturing and high-voltage electric pulse to perform large-range cracking and pressure relief on the coal rock stratum, changes the stress state of the coal rock stratum, and reduces the stress concentration degree, so that the anti-burst purpose is achieved. The method is mainly applied to deep coal rock body tunneling roadways and coal mining working faces containing coal rock body impact tendency.

The invention relates to a device for applying shock waves to an animal or human body, comprising a shock wave source arranged in a housing. The shock wave source is focused on a point. The device comprises an acoustic lens (13) configured such that a width of a focus of the shock waves generated by the shock wave source in the focal plane is at least twice as wide along a first transverse axis extending in the focal plane as along a second transverse axis extending in the focal plane in a manner perpendicular to the first transverse axis. The invention further relates to a gel cushion having an acoustic lens contained therein for detachable arrangement on a device for generating shock waves.

The present invention relates to a shock wave energy density testing device and method. A shock wave energy density testing device includes a limiting mechanism, a driver, and a detection mechanism. The limiting mechanism includes a support member and a mass block slidably connected to the support member; the driver can hit the mass block to make the mass block move along the length direction of the support member; the detection mechanism is used to obtain the moving distance D of the mass block on the support member, and is used to send the data of the moving distance D to the calculation module so that the calculation module can calculate the shock wave energy density borne by the mass block. The above-mentioned shock wave energy density testing device is conducive to improving the accuracy of the test results, avoiding the errors that may be caused by manual visual inspection and calculation, further improving the accuracy of the test results, and realizing automatic data collection and analysis.

The utility model discloses a flow regime adjusting device for heavy sediment, which belongs to the technical field of building material stirring, and comprises a tank body and a tank cover arranged at the top of the tank body, a barrel body with a closed top end and an open bottom end is arranged on the inner side of the tank body, and a plurality of flow regime adjusting devices are arranged on the inner side of the barrel body. A feeding port and a discharging port are formed in the side wall of the bottom end and the side wall of the top end of the barrel respectively, a driving motor is installed on the upper surface of the tank cover, and the power output end of the driving motor is in transmission connection with a shaft rod extending to the inner side of the barrel. Meanwhile, small bubbles are formed in the liquid under the cavitation action of ultrasonic waves, and the bubbles expand and contract under the action of sound waves and finally collapse severely under high pressure to generate strong shearing force and shock waves, so that the materials are effectively mixed.

The invention discloses a multi-point explosion hazard effect evaluation test method and a multi-point explosion hazard effect evaluation test system. The method comprises the following steps: uniformly distributing a plurality of explosion sources with prefabricated fragments on the same circumference and synchronously detonating; determining abdominal line distribution based on a shock wave superposition principle, and dividing a reference ring, an inner ring and an outer ring by taking an explosion central point O as a circle center according to a predicted overpressure peak value; and cake-shaped and penholder-type free field pressure sensors, impulse targets, simulation dummies, pine targets and speed measurement targets are systematically arranged on each ring layer along the abdominal line direction. By synchronously collecting multi-parameter data such as shock wave pressure-time history, fragment speed, target deformation, human body reflection overpressure and the like, quantitative analysis of shock wave superposition and attenuation characteristics, fragment power field distribution, human body damage risk and explosion impulse aftereffect is realized. The problem that the multipoint explosion hazard effect lacks a standardized test means is solved, and data support is provided for protection equipment research and development and safety standard formulation.

In order to solve the technical problems that traditional monitoring equipment is delayed in triggering, insufficient in frame rate and poor in storage architecture, and an existing high-speed camera system is low in data extraction efficiency, the safety of a storage medium is difficult to guarantee and the like, the invention discloses a split type high-speed monitoring system and method used in a high-risk burning and explosion environment. Wherein the monitoring system comprises a monitoring unit, an acquisition and storage unit and a data transmission unit; the monitoring unit is located in a monitoring scene, the acquisition and storage unit is located outside the monitoring scene, and the monitoring unit and the acquisition and storage unit are connected through the data transmission unit; the monitoring unit comprises an explosion-proof shell, and a trigger module, an imaging module and an electric control module which are positioned in the explosion-proof shell; the trigger module monitors a target area and collects optical signals and / or shock wave pressure signals generated by combustion, fire blast or explosion, converts the optical signals and / or shock wave pressure signals into trigger electric signals and transmits the trigger electric signals to the electric control module, and the electric control module controls the imaging module to shoot images of the target area and transmits image data to the collection and storage unit through the data transmission unit to be stored.

The invention relates to the technical field of borehole cleaning and unblocking methods, in particular to a wellbore hydrate unblocking method which comprises the following steps: preliminarily judging a well blocked by hydrate, determining an unblocking scheme, lowering an unblocking device, implementing unblocking operation and implementing open flow operation. According to the method, a well logging instrument and a counterweight rod are carried by a cable to softly explore a shaft, the depth position of a hydrate blocking point and shaft environment parameters at the position are determined, and therefore a proper impact blocking removal scheme is prefabricated, and a pulse type controllable impact wave generator with high energy storage capacity and impact wave amplitude is selected as a blocking removal device; the pulse type controllable shock wave generator releases huge energy to generate shock waves, so that hydrogen bonds on hydrate crystals are broken and broken into hydrate particles, and finally, the hydrate particles are discharged through well mouth blowout, and the plug removal operation is completed. The method has the advantages that the method is not only suitable for wells with wellbores not completely blocked by hydrates, but also suitable for wells with wellbores completely blocked by hydrates and without flowing channels, and the application range is wider.

An exemplary catheter includes a catheter body, a first conductive member comprising a first material positioned on the catheter body, a second conductive member comprising a second material different from the first material positioned on the catheter body, one or more electrical joints configured to electrically couple the first conductive member to the second conductive member, and one or more shock wave emitters. Each shock wave emitter is configured to generate a shock wave, and at least one shock wave emitter of the one or more shock wave emitters comprises electrodes separated by a spark gap, wherein at least one of the electrodes is formed from the second conductive member.

The invention discloses an explosive shock wave intelligent mixed numerical simulation method, device and equipment, and relates to the field of numerical simulation, and the method comprises the steps: determining a computational domain range, grid node information and simulation termination time of an explosive shock wave simulation problem, and constructing a tetrahedral grid; initializing a physical flow field based on a computational domain range, and constructing a flow field analysis model based on the tetrahedral mesh; using a mean total variation bounded discontinuous detection method to identify a discontinuous region and a smooth region in a computational domain range; for the discontinuous region, reconstructing physical parameters in the flow field analytical model by adopting a non-structural multi-resolution weighted essential oscillation-free reconstruction method, and for the smooth region, reconstructing physical parameters in the flow field analytical model by adopting a linear windward reconstruction method; and performing spatial discretization on the physical flow field based on the flow field analysis model, then performing time discretization, and obtaining a numerical simulation result until the calculation time exceeds the simulation termination time. According to the invention, optimal balance of precision and efficiency is realized.