72 results about "Point source" patented technology

The invention discloses a stochastic finite fault source model establishment method, which comprises the following steps of S1, determining a geometrical shape of a seismic fault based on regional geological data and seismic monitoring data, and estimating a non-planar fault parameter and a fault plane average sliding amount in combination with historical data and an empirical formula; s2, estimating distribution and sliding strength of concave-convex bodies and obstacles on the fault surface according to historical seismic inversion data, and obtaining the sliding amount of each sub-fault by randomly disturbing the average sliding amount; s3, the discrete fault plane serves as a sub-fault unit, and after an initial fracture point and the average fracture speed are determined, random fracture initial time conforming to normal or power law distribution is generated based on a random number method; s4, calculating the seismic oscillation time history of each sub-fault by adopting a random point source method, superposing contributions, introducing the influence of a shallow velocity structure V30, and generating a three-dimensional seismic oscillation field; and S5, comparing actual strong earthquake record adjustment parameters, and outputting a multi-risk-level earthquake motion parameter evaluation result after iterative optimization. According to the method, by fusing randomness and empirical data, the simulation precision of the seismic source model on the uncertainty of the seismic process is improved, the influence of the potential maximum-magnitude earthquake possibly occurring in the active fault zone in the future can be effectively estimated, the seismic oscillation simulation precision and the calculation efficiency can be improved, and the method is suitable for engineering structure aseismic design and seismic disaster evaluation.

The invention relates to a measurement precision correction method for a digital geological compass. The method comprises the following steps: determining the magnetic field stability of a target position according to the difference between total magnetic field intensities in a first interval; determining a magnetic field interference coefficient at the moment according to a difference value between the total magnetic field intensity at each moment and the total magnetic field intensity at the target moment; determining the integrating degree of the point source model at the previous moment according to the difference between the magnetic field interference coefficients at each adjacent moment and the duration of the interval between each adjacent moment and the initial moment; determining a target duration according to the magnetic field interference coefficient in the second interval and the duration of the interval between each moment and the initial moment, and correcting the magnetic field data of each axis of the compass according to the target duration and the difference between the magnetic field data of each axis at the target moment and the magnetic field data of the axis in the first interval; and carrying out azimuth calibration on the compass according to the corrected magnetic field data of each axis and the longitude and latitude of the target position. The method can improve the accuracy of geological survey.

The invention provides an optimization method for geometric parameters of an ultrasonic transducer for online thickness measurement of a cable insulation layer, and belongs to the field of ultrasonic transducer optimization design. According to the method, a cable is dispersed into a plurality of spatial positions according to cable vibration characteristics, and the optimization problem of the ultrasonic transducer is formed; decision optimization indexes of the average amplitude, the minimum amplitude, the amplitude variance and the cost of secondary reflection signals at multiple spatial positions are established, then the amplitudes are converted into surface receiving sound pressure, quantitative calculation of the sound pressure is achieved through a distributed point source method, a decision matrix is established, and the surface receiving sound pressure is calculated. And then selecting a relatively optimal transducer geometric parameter scheme by adopting a multi-weight comprehensive approximation ideal solution sorting method. According to the method, the problem of low signal amplitude in the traditional thickness measurement process can be effectively solved, and the construction of a better online measurement system can be supported, so that the development cost and time are reduced, and a new thought is provided for the optimization design of an ultrasonic measurement system in a complex environment.

The invention belongs to the technical field of optical lenses, and particularly relates to a discrete point source bus set envelope fitting and optimization design method for expanding a light source to realize uniform illumination. Dispersing the expansion source into point light sources, and obtaining a cluster bus set based on an accurate mathematical model of the point light sources; according to an envelope principle, selecting an outmost contour including all features as much as possible, and fitting the outmost contour by using a polynomial under a polar coordinate system to serve as an initial generatrix of the light distribution lens; a root mean square error of an irradiance distribution numerical value obtained by running a two-dimensional ray tracing program is used as an evaluation index to optimize and fit various coefficients of a polynomial, finally, the lens suitable for achieving uniform illumination through extended source light distribution is obtained, and the problem that mathematical modeling of an extended source light distribution light path is difficult is solved; through verification, the performance is good, the irradiation uniformity is gradually improved to 92.7% from 76.8% of an initial structure, the edge irradiance gradient is improved to 0.45 from the initial 0.27, and the edge dispersion problem is effectively weakened.

The present application relates to the field of pollutant diffusion simulation and disaster emergency, in particular to a calculation method of pollutant point source explosion diffusion based on local micro-meteorological environment, comprising the following steps: S1. Data acquisition and preprocessing: obtaining local micro-meteorological data, point source pollutant parameters and terrain data, and performing data preprocessing; S2. Explosion parameter inversion: based on pollutant characteristics, initial release conditions and micro-meteorological environment parameters, key parameters of explosion shock wave and pollutant release are inverted; S3. Micro-meteorological-explosion-diffusion coupling simulation: a coupling model of micro-meteorological field, explosion shock wave field and pollutant diffusion field is constructed to simulate the interaction process; S4. Result output and visualization: the calculation results are sorted and analyzed, key information is output, and graphical display is performed. The present application realizes fine input and dynamic coupling of local micro-meteorological elements, establishes a linkage model of explosion shock wave and local airflow, and constructs a parameter adjustment mechanism for different local scenes.

The invention provides an earth surface deformation forward and reverse modeling method and system based on a mogi model. The method comprises the steps of obtaining an observation data file and a mogi point source parameter constraint file; determining deformation parameters of observation points from the observation data file, and obtaining regional optimal mogi point source parameters based on nonlinear least square inversion by combining the mogi point source parameter constraint file; position parameters of observation points are determined from the observation data file, mogi forward modeling is carried out based on regional optimal mogi point source parameters, and a theoretical earth surface deformation field is obtained; and calculating a residual index according to the theoretical earth surface deformation field and the deformation observation value of the observation point, and outputting the theoretical earth surface deformation field and the residual index which meet a preset evaluation requirement.

The invention relates to the technical field of calculation imaging, in particular to a space-time heterogeneous aberration intelligent calculation method, system and device and a computer storage medium. According to the invention, the optical sensor is placed on the rear focal plane of the micro-lens array to collect the four-dimensional light field information of the three-dimensional point source, and the sub-aperture image is extracted, so that a rich data basis is provided for aberration modeling. According to the method, scene Gaussian and aberration Gaussian parameters are initialized based on sub-aperture images, the scene Gaussian parameters are transformed by using an S3 Splitting mechanism and projected to a two-dimensional image plane to generate a rendered image, joint optimization is carried out through combination of a spatial domain and frequency domain loss function and an Adam optimizer, and accurate modeling and correction of space-time heterogeneous aberration are realized. And finally, the target scene is directly projected to generate a corrected high-resolution clear image in a Gaussian mode, complex optical hardware is not needed, and the problems that in the prior art, the spatial resolution is reduced, the time resolution is reduced, space-time heterogeneous aberration cannot be processed, and generalization is not high are effectively solved.

The present invention discloses a method for actually measuring the attenuation coefficient of broadband laser ultrasonic Lamb waves in metal thin plates, belonging to the field of nondestructive testing. Data acquisition stage: Use a nanosecond laser to set a point source excitation on the surface of an aluminum alloy thin plate, and then use a scanning laser Doppler vibrometer (SLDV) to measure the wave field and collect linear wave field data. Data processing stage: Use the time-frequency analysis of continuous complex wavelet transform to obtain the time-frequency spectrum of the one-dimensional wave field signal. Determine the effective analysis range, including the time upper limit and the frequency upper limit. Extract the amplitude data represented by the intercept line. Attenuation characteristic analysis stage: Extract the peaks of the amplitude data at multiple distance points to obtain discrete points of the amplitude change with distance at a specific frequency. The present invention provides a method for actually measuring the attenuation characteristics of broadband laser ultrasonic Lamb waves. The solution of the attenuation coefficient provides an important theoretical reference for the calculation of the effective detection range and the selection of the filtering frequency of damage scattered waves.

The invention relates to a coordinate transformation correction method for 3D point cloud space volume identification based on MLESAC and SVD. The coordinate transformation correction method comprises the following steps: preprocessing original point cloud data; extracting a reference plane, and constructing a mixed probability model through an MLESAC algorithm; calculating an optimal rotation matrix and an optimal translation vector by using the normal vector on the reference plane and the normal vector on the three-dimensional coordinate system and adopting an SVD (Singular Value Decomposition) algorithm; according to the obtained optimal rotation matrix and translation vector, rotation transformation and translation transformation are carried out on all point sources in the source point set P, and the point sources are made to fall on a target plane; and outputting the corrected point cloud, verifying the standard deviation of the distance from the corrected reference plane to the target plane, and ensuring that the standard deviation is close to zero. The beneficial effects of the invention are that through robust registration and accurate transformation, the problem of point cloud space coordinate offset caused by installation deviation of 3D scanning equipment is solved, and the accuracy and efficiency of cargo volume measurement are significantly improved.

This invention discloses an electromagnetic eddy current defect imaging method and system based on parameter level sets. The method includes optimizing the parameters of an array of eddy current sensors; acquiring data from the metal component under test to obtain eddy current response signals under different excitation-reception conditions; reconstructing the three-dimensional defects based on a parameter level set reconstruction algorithm; setting the location of discrete point sources, the conductivity values ​​of the metal and defects, and the initial coefficient parameters of the basis functions; inputting the eddy current response signals into the level set reconstruction algorithm model to obtain the defect reconstruction objective function based on the parameter level set; calculating the Jacobian matrix and iteratively solving the objective function using the Gauss-Newton method, performing iterative updates, and determining whether the defect reconstruction has converged based on whether the deviation between the reconstruction results before and after the iteration is less than a threshold; and obtaining the final defect imaging result. This invention is easy to implement and does not require a mechanical scanning device; it can acquire information on internal surface defects of metal components through computational imaging.

The present application provides a multi-source satellite cooperative-based atmospheric carbon monoxide plume identification and quantification method, comprising: training a ViT model using TROPOMI data to realize global CO plume intelligent rough screening, and generating a first-level mask by SAM after detecting an event; introducing GaoFen-5 AHSI data for a first-level event, performing matching filtering to invert a CO enhancement field and driving SAM to generate a second-level mask; introducing WorldView-3 data for a second-level event, inverting a CO enhancement field through a logarithmic radiation ratio and driving SAM to generate a third-level mask. Finally, according to the resolution of each level of satellite, the IME method is used to estimate the emission rate of each level of point source. The present application constructs a three-level cooperative automatic detection system of 'global scanning-regional detailed investigation-local precise investigation', effectively improves the automation level and attribution ability of CO point source detection, and is suitable for emission verification of key industries and facilities.

The invention discloses a ship underwater water pressure field depth conversion method, which comprises the steps of constructing a ship electrostatic field conversion model based on a point charge model; the influence of the interface effect on a ship pressure signal under the shallow sea environment condition is equivalent to the influence of the interface effect on a ship corrosion related electrostatic field, and a model considering the influence of the medium effect on the ship electrostatic field is established; according to the electrostatic field model, a parallel equivalent source is constructed for a ship water pressure field along the longitudinal directions of a port and a starboard of a ship body based on a source-sink model, and a three-dimensional flow field problem is converted into an equivalent source model distribution problem; establishing a pressure signal inversion method of a point source on the basis of considering the influence of an interface effect on a ship pressure field signal and a source-sink model; the pressure signal model is solved, and then the pressure value of any field point is inverted; a multi-source coupling inversion system with physical interpretability is established, and the signal reconstruction precision under different water depth conditions is remarkably improved by introducing a constraint optimization algorithm; and the actual engineering requirements are met.

The application provides a method for automatically identifying smoke plumes of global large point sources based on satellite data, which is based on the column concentration data retrieved by high-resolution satellite remote sensing, selects the region around the global large point source as the research region, and obtains the local concentration enhancement data by deducting the background concentration from the original column concentration. The best global segmentation threshold in the research region is obtained, and the median of the foreground pixels is further taken as the final threshold. The pixels greater than the final threshold in the concentration enhancement image are recorded as the final pixel group, and the information of the final pixel group is traversed to screen out the initial screening plume pixels that meet the conditions, so as to screen out the plume pixels that meet the conditions. The retrieved global large point source emission plume is artificially identified, and the false positive plume is removed, so that the global large point source pollution gas emission smoke plume is finally obtained. The application can automatically identify the emission plume of the preset global emission point source during satellite observation.

The present invention discloses a method and device for infrared diffusion imaging of small targets based on a point source blackbody. First, based on the principle of small target infrared imaging diffusion, a small target diffusion imaging model is constructed to obtain a theoretical diffusion area that varies with distance. The constructed small target diffusion imaging model is calibrated based on dynamic test performance to obtain a small target diffusion calibration area. The small target diffusion calibration area is then compared with the actual diffusion area of ​​the small target measured to verify whether the derived diffusion calibration area conforms to the small target imaging diffusion size. This method and device overcome the problem in the prior art that the target imaging principle is not suitable for small target imaging ambiguity. It can effectively improve the accurate measurement of small target imaging size and provide a testing basis for target recognition in future infrared imaging systems.

The application relates to a measurement precision correction method for a digital geological compass. The method comprises the following steps: determining the magnetic field stability of a target position according to the difference between the total magnetic field strengths in a first interval; determining the magnetic field interference coefficient of each moment according to the difference between the total magnetic field strength of each moment and the total magnetic field strength of a target moment; determining the point source model fitting degree of a previous moment according to the difference between the magnetic field interference coefficients of each adjacent moment and the time length interval between each adjacent moment and an initial moment; determining a target time length according to the magnetic field interference coefficients in a second interval and the time length interval between each moment and the initial moment, and correcting the magnetic field data of each axis of the compass according to the difference between the magnetic field data of each axis of the target moment and the magnetic field data of the axis in the first interval and the target time length; and performing azimuth calibration on the compass according to the corrected magnetic field data of each axis and the latitude and longitude of the target position. The method can improve the accuracy of geological measurement.

The present invention relates to a method, system, device and medium for simulating Rayleigh surface waves of a high-speed railway earthquake source, and belongs to the technical field of numerical simulation of earthquake waves. A high-speed train is a moving line source in a fixed direction. Based on the train moving load model, the loads applied by the four pairs of axles of each carriage to the sleepers under the track are taken as point sources, and the moving line source is decomposed into a superposition of a series of point sources. Considering the elastic effect of the track rails, a time function of the high-speed railway earthquake source is constructed based on the Euler-Bernoulli elastic beam theory. Considering the absorption and attenuation of seismic waves by the underground medium, the staggered grid finite difference method is used to solve the Kelvin viscoelastic wave equation, and at the same time, considering the free surface boundary, the wave field of the earthquake Rayleigh surface wave excited by the high-speed railway moving earthquake source is numerically simulated. It provides the basis and data for the subsequent waveform inversion based on the high-speed railway earthquake source and the inversion of the high-speed railway earthquake source surface wave dispersion curve.

An analytical method for the reflection coefficient of acoustic waves excited by a fluid-porous solid interface seismic source, including Step 1: deriving the general forms of the potential functions of the fast and slow longitudinal waves and the transverse wave excited by a point source in a porous solid medium; Step 2: using the fluid-porous solid boundary conditions and the relationships between displacement and displacement potential, and stress and strain, to derive the equation relationships between the potential functions of the incident acoustic wave, the reflected acoustic wave, the transmitted fast and slow longitudinal waves, and the transmitted transverse wave excited by a point source; Step 3: solving the displacement fields of the incident and reflected acoustic waves in the fluid medium at the fluid-porous solid seabed interface excited by a point source; Step 4: deriving the analytical equation for the reflection coefficient of acoustic waves excited by a point source at the fluid-porous solid seabed interface. It can accurately characterize the reflection characteristics of acoustic waves excited by a point source at the fluid-porous solid seabed interface, and is of great significance for seabed sound field simulation, underwater target detection, and seabed resource exploration.

An optical system includes a multimode waveguide having a non-circular cross-sectional core for transmitting light and a lens optically coupled to the multimode waveguide. The lens directs light from one or more point sources into the multimode waveguide so that the light is transmitted in one or more modes of the multimode waveguide. After transmission, the light is detected at one or more detectable points. In some cases, a back-end lens is configured to receive light output from the multimode waveguide. The back-end lens directs the light to one or more detectable points. In some cases, the front-end lens directs light from two or more point sources to the multimode waveguide at different angles with respect to a propagation axis of the multimode waveguide so that the light is transmitted via two or more different modes of the multimode waveguide, respectively.

The invention provides an interference correction method and system for a far-field support of an arc rail of a half-curved knife device, and relates to the field of wind tunnel test data processing, and the method comprises the steps: taking the arc rail as a finite-length arc section curve source around the rotating center of the half-curved knife device, and constructing a mathematical model through a basic formula of the induced velocity of a curve source micro-section to a model region; configuring characteristic parameters of the mathematical model; according to the characteristic parameters, calculating the actual wind speed and the airflow deflection angle after the model point is disturbed by the point source; carrying out aerodynamic characteristic correction according to the actual wind speed and the airflow deflection angle; the aerodynamic characteristics include velocity pressure, airflow deflection angle parameters, axial static pressure gradient and component additional influence. According to the invention, interference correction can be carried out on the arc rail far-field support of the half-curved knife device, so that the accuracy of test data is further improved.

The application relates to a long-focus large-view-field object scanning optical system based on a single point source detector, and belongs to the optical field.The application comprises a scanning mirror group, a turning mirror, a filter, a field stop and a point source detector; the scanning mirror group comprises a main mirror, a secondary mirror and a small mirror; light of a detected target is irradiated onto the main mirror, is reflected and converged by the main mirror, is reflected by the secondary mirror, is reflected by the small mirror, is reflected and converged by the turning mirror, is transmitted through the filter and the field stop, and is irradiated onto a target surface of the point source detector; and the scanning mode of the scanning mirror group is swing scanning or 360-degree full-view field scanning at high speed.The application improves the farthest detectable distance of the system and the working efficiency of the system, improves the scanning speed and stability of the system, has simple system structure, small volume, good stability, low cost, high detection sensitivity, high reflectivity, a wide spectral band, multi-spectral detection capability and improved contrast of a detection signal.

The invention discloses a reconfigurable three-dimensional experimental device and method for measuring a gravity flow transient flow field in real time. Switching between the plume mode and the density current mode is achieved through a unified platform, and an inseparable organic whole is formed through linkage reconstruction of inflow and an observation system. The core measurement equipment and the algorithm are kept consistent in two modes, so that the system error between different equipment is fundamentally eliminated, and the measurement data is ensured to have extremely high inherent comparability. According to the two-stage type flow state treatment diffuser designed by the invention, the technical problem of converting point-source high-kinetic-energy flow provided by a pump into uniform surface-source quasi-steady-state flow is ingeniously solved, high-quality three-dimensional continuous inflow can be realized only by using conventional water supply equipment, and the experiment threshold and cost are greatly reduced.

The present application relates to the technical field of image processing, and specifically provides a kind of construction method of low signal-to-noise ratio spatial point source target data set, including obtaining scientific image, according to scientific image, establish signal-to-noise ratio-exposure time physical model to obtain the optimal exposure time corresponding to target signal-to-noise ratio, according to optimal exposure time, collect multiple frames of images to form multiple groups of acquisition sequences, each group of acquisition sequences includes two long exposure frames and a short exposure frame, according to target in long exposure frame, obtain the target label position of short exposure frame by label migration, create annotation mask with target label position as center, and based on the imaging characteristics of short exposure frame and target neighborhood, perform half-height full-width anomaly detection, ellipticity test, background stability test and star orbit crossing detection on generated sample, obtain sample with quality level, and then form data set.The present application method can improve the labeling accuracy, physical authenticity and data set reliability of low signal-to-noise ratio spatial point source target sample.

This invention discloses a simulation data generation method, apparatus, electronic device, and storage medium. The method is used to simulate imaging data from a radiation tomography (RTG) device. The method includes: acquiring point source information for multiple preset point sources in a preset virtual imaging space; for each preset point source, performing simulated imaging based on the detector parameters of the RTG device and the point source information to obtain first simulation data for that preset point source; selecting at least one set of preset point sources from the multiple preset point sources, each set including at least some preset point sources; and for each target phantom, obtaining target simulation data for that target phantom based on the first simulation data from the corresponding set of preset point sources. This approach can quickly and efficiently generate diverse simulation data, thereby providing a large amount of effective training data for deep learning models.

A lens-less system for holographic imaging or a holographic imaging device is provided. The method / device includes a stationary image sensor to capture an image of a sample illuminated by light from a stationary illumination source. A reference lens-less holographic image may be captured and used as a base line to reduce image artifacts and / or remove noise from the lens-less holographic image. Since real wavefronts produced by a diverging point source are neither perfectly spherical nor planar but a combination of both qualities, theoretical estimates for wavefront reconstruction based on perfectly planar or spherical incident waves cannot be applied accurately. The method / device here provides a solution by performing a calibrated wavefront reconstruction based on equations governing coherent light propagation for both spherical waves and planar waves with a mathematical correlation between numerical magnification and propagation depth to produce accurate three-dimensional details of the object.

The present disclosure provides an underwater point source polarized light detection device and a heading angle measurement method, which are applied to the field of polarization navigation technologies. The polarized light detection device includes a base, a rotating detection platform provided on the base, and three sets of polarized light detection modules provided on top of the rotating detection platform. The three sets of polarized light detection modules are of the same structure, each set of detection module consists of a pair of polarization analyzing channels with transmission directions perpendicular to each other, the other two sets of detection modules are positioned such that polarized light detection directions thereof are bilaterally symmetric in the same plane about a zenith polarized light detection direction and that an included angle between each of the polarized light detection directions and the zenith polarized light detection direction does not exceed 5°, and the rotating detection platform is configured to be rotatable for 360° about an axis of the zenith polarized light detection direction. The heading angle measurement method using the detection device has advantages of good adaptability to underwater environments and requiring a reduced number and types of polarization analyzing channels.

The invention relates to the technical field of laser processing, in particular to a three-dimensional line light field parallel processing method and device, electronic equipment and a storage medium, and the method comprises the steps: splitting a target light field into a plurality of point sources based on the Huygens Fresnel principle, transmitting the point sources reversely, superposing the point sources on a target plane, and coding the amplitude to a phase; a three-dimensional line light field is generated at a preset distance behind a spatial light modulator, then the weight of a modulation point source can be determined according to a current scene of three-dimensional line light field processing based on a point source spherical wave model, the relative intensity of at least part of positions of the three-dimensional line light field is modulated, and therefore the target cross section shape distribution accuracy is improved based on a complex structure distributed based on the target cross section shape. And carrying out scanning processing by utilizing the linear light field tool box and adopting a corresponding linear light field and a combination mode. Therefore, the problems that the machining quality is unstable, efficiency and quality cannot be considered at the same time, the machining adaptability and universality are insufficient, and the industrial production requirement is difficult to meet in the prior art are solved.

A device for optimizing a source mask generates an illumination system and a mask output set based on an input mask image and a user input. The user input includes target constraints. The device for optimizing the source mask generates a plurality of split mask images based on an input mask image, generates a plurality of source mask sets corresponding to the plurality of split mask images, by performing a dual point source simulation for each of the split mask images, based on a plurality of dual point source sets, and generates a plurality of dose optimized source mask sets by performing dose optimization with respect to each of the plurality of source mask sets, based on a target value for a degree of light exposure of a resist pattern, wherein each of the plurality of dual point source sets includes two point sources having telecentric symmetry with respect to each other.

The invention belongs to the technical field of oil reservoir development dynamic monitoring data interpretation and analysis, and particularly relates to a well testing analysis and interpretation method for a single-medium different-boundary oil reservoir inclined shaft. A well testing analysis and interpretation method for a single-medium different-boundary oil reservoir inclined shaft comprises the following steps that according to the characteristics of a single-medium oil reservoir, an instantaneous point source diffusion equation of the single-medium oil reservoir is listed in combination with different types of boundary conditions; according to a mirror image reflection rule, carrying out infinite multiple times of symmetry along top and bottom boundaries through a LordKelvin basic solution, and superposing sources to obtain a single-medium oil reservoir instantaneous point source function basic solution under different types of boundary conditions; and integrating along the track of the mirror image inclined shaft in combination with the track of the mirror image inclined shaft, and obtaining the bottom hole pressure response of the inclined shaft in the single medium oil reservoir under different types of boundary conditions through dimensionless. Compared with a conventional vertical shaft theory for explaining inclined shaft data, the method has the advantage that the adaptability and precision of analysis and explanation can be greatly improved.

The application provides a dam-break flood simulation method and device, wherein the method comprises the following steps: obtaining the elevation of the reservoir water level of the dam and other parameters, calculating a breach flow evolution curve and other curves, and converting point source data into surface source data; obtaining the calculation result of the flood simulation; sequentially calculating the physical quantity of each node in stages, using different time steps in each stage, changing the calculation parameters when entering the next stage, and updating the terrain data; using time series alignment technology to align the initial scale representative flow value output by the dam-break parameter model; calculating the river flow of the river in the dam-break area; obtaining a reservoir capacity-sediment coupling model according to the sediment mass conservation equation, and predicting the dam-break of the to-be-predicted area, so that the time series alignment technology effectively guarantees the cross-scale data transmission accuracy and makes up for the limitation that the traditional calculation model cannot simulate short-term breaches and short-term river scouring.

The present application provides a shale gas infill adjustment well productivity prediction model, method, device and medium. The establishment method comprises the steps of establishing a physical model, establishing a seepage model, deducing a point source solution and establishing a horizontal well group productivity prediction model, wherein in the step of establishing the horizontal well group productivity prediction model, the influence of long-term fracture conductivity is considered. The prediction method is realized based on the established model. The device comprises a processor and a memory storing instructions for executing the above method. The storage medium stores program instructions. The method proposed in the present application can calculate the productivity of shale gas infill adjustment wells considering inter-well pressure interference and long-term conductivity, and the calculation result is more accurate than existing methods. The method improves the accuracy of shale gas infill adjustment well productivity prediction and has a wide application prospect.