218 results about "Geophone" patented technology

The invention discloses a three-component detector azimuth correction method, device and equipment based on multi-event fusion and probability weighting, a medium and a product, and relates to the technical field of geophysical exploration. The method comprises the following steps of: after acquiring at least two seismic signals recorded by a target three-component detector and generated by utilizing at least two active source events, acquiring a corresponding initial azimuth calibration angle for each active source event; the method comprises the following steps: acquiring a calibration angle, distributing a corresponding weight for the calibration angle according to a signal quality index calculated based on a corresponding seismic signal, fusing all the calibration angles according to all the weights to obtain a final azimuth calibration angle, and finally performing coordinate rotation correction on original horizontal component data by using the final azimuth calibration angle. Therefore, by introducing a weighting mechanism based on signal quality, higher-precision and more reliable azimuth correction can be realized, the seismic data quality and the reliability of subsequent interpretation are improved, and practical application and popularization are facilitated.

The present application relates to geological exploration technical field, disclose a kind of thick loess plateau area coalfield 3D seismic exploration method, comprising the following steps: S101, artificial seismic source shooting record and superficial Rayleigh wave detector data are collected;S102, grid division is carried out to target area, and set to be inverted parameter;S103, vertical ray path time estimation, multilayer medium dispersion forward and poststack energy estimation are carried out;S104, according to first wave arrival time observation value, Rayleigh wave observation dispersion curve, theoretical ray path time, phase velocity and poststack energy generates multi-target error function;S105, target area is divided into three subdomains, differential evolution iteration is carried out, until local convergence;S106, establish a plurality of parallel annealing chain, set chain temperature and gradually decrease by chain, optimize to be inverted parameter, output optimal to be inverted parameter;S107, the static correction time difference and absorption compensation coefficient of each acquisition point are calculated.The present application improves coal seam structure imaging precision and exploration data reliability under complex surface conditions.

The invention provides a three-dimensional scattering imaging method, device and equipment and a storage medium, and relates to the technical field of seismic wave imaging, and the method comprises the steps: collecting seismic wave data through a three-component detector, carrying out the polarization analysis, obtaining the actual path data of scattered waves, constructing a common scattering point gather of each preset underground scattering point, and obtaining a common scattering point gather of each preset underground scattering point; when the common scattering point gather is constructed, the amplitude is adaptively weighted according to the consistency of theoretical path data and actual path data of a seismic trace, and then imaging is performed based on the common scattering point gather to obtain an imaging result including the underground scatterer. According to the method, by introducing path consistency weighting, the common scattering point gather quality and the imaging precision are remarkably improved.

This utility model belongs to the field of geophysical exploration technology, and in particular to a downhole geophone for geophysical exploration. It includes a detection well and a connecting frame disposed on one side of the detection well. The connecting frame is connected to a connecting column via a connecting line. The connecting column is connected to the inner surface of the outer shell. Through the action of the outer shell, the support, and the guide wheels, this device can achieve stable transport and retrieval of the geophone, enabling stable geophone detection and ensuring it remains on the central axis of the detection well. This effectively guarantees the accuracy of the acquired data. In the event of borehole collapse, tension can be applied to the connecting column via the connecting line. Under the action of external resistance, the outer shell, in conjunction with the guide cylinder compression spring, and the lifting of the geophone, achieves the retrieval of the support, reducing resistance during retrieval and providing convenience for recovery.

A high-iron karst geological section comprehensive parameter fine automatic exploration system, including walking wheels, drill bit electrodes, drill bit detectors, drill bit magnetic excitation systems, electrode rotation systems, detector rotation systems, magnetic excitation rotation systems, liquid injection systems, control systems, multi-parameter interpretation systems, power systems, and wireless communication systems; the present application is based on the resistivity method and the wave velocity method, and can be used to explore any depth stratum that can be reached, independent of each other and mutually corroborating to reduce the karst geological multiple solutions, Rayleigh waves and electrical signals can transmit the most suitable signal type and strength according to the geological conditions at the set depth, which can realize the fine and automatic exploration of karst geology and improve the exploration efficiency. The present application also corrects the geological classification method in karst areas, and the corrected method can fully consider the development and particularity of karst, providing a method for the automation of high-iron geological exploration in karst areas and avoiding human errors.

The invention discloses a drill seismic source signal acquisition method and device, equipment and a medium, and relates to the technical field of seismic exploration. The method comprises the following steps: in an underground excitation process of an earthquake while drilling, respectively arranging a first seismic detector and a second seismic detector in a preset range of a drill bit and a preset range of a wellhead so as to obtain a corresponding first seismic wave reference signal and a corresponding second seismic wave reference signal; determining a seismic wavelet signal based on the first seismic wave reference signal and the second seismic wave reference signal, and generating a target seismic record by using the seismic wavelet signal and seismic wave data collected by a third seismic detector arranged on the earth surface; and processing the target seismic record by using a compressed sensing inversion technology to obtain a target drill seismic source signal. According to the technical scheme of the invention, the drill seismic source signal with high resolution and signal-to-noise ratio can be obtained.

The utility model belongs to the technical field of geological exploration equipment, and particularly relates to a positioning device for geophone consistency in seismic exploration, which comprises outer rulers and a rotary connecting assembly, a plurality of outer rulers are mounted on the outer side of the rotary connecting assembly at equal angles, and a first positioning plate is fixedly arranged at the bottom of one end, close to the rotary connecting assembly, of each outer ruler. Positioning bolts are installed on the outer walls of the ends, away from the rotary connecting assemblies, of the outer rulers in a threaded mode, inner rulers are arranged in the outer rulers in a clamped and sliding mode, second positioning plates are fixedly arranged at the bottoms of the ends, located outside the outer rulers, of the inner rulers, the second positioning plates and the first positioning plates are symmetrically arranged, and limiting assemblies are installed between every two adjacent outer rulers. According to the utility model, the distance between each detector and the central vertical shaft can be ensured to be consistent, test errors caused by the distance can be effectively reduced during knocking detection, and the accuracy of test data of the detectors is effectively improved.

A three-dimensional fiber grating seismic detector, a U-shaped mounting seat has a fiber fixed in the vertical direction of the inner side of one side wall, the fiber is in a suspended state, the fiber is engraved with a first grating and a second grating at a certain distance, a first hollow hexagonal beam, a second hollow hexagonal beam and a mass are sequentially arranged between the other side wall of the U-shaped mounting seat and the fiber, the mass is flush with the fiber on the side close to the fiber and is fixed between the first grating and the second grating through glue, and the center line of the second hollow hexagonal beam is orthogonal to the center line of the first hollow hexagonal beam. The two hollow hexagonal beams with orthogonal center lines can collect three-dimensional seismic information, the packaging mode of two gratings engraved on the same fiber is adopted, the sensitivity of the detector is effectively improved, the temperature compensation in the Z-axis direction is realized, and compared with common vibration sensors, the detection of three-dimensional vibration signals is realized through only two fiber gratings and a mass.

The invention provides an earthquake monitoring device with an early warning function, and relates to the technical field of earthquake monitoring. The top of the transmission connector is connected with a data acquisition early warning station on the ground through a wire, the bottom of the transmission connector is connected with a seismic detector, and the seismic detector is located at the depth of 50-150 meters underground. The transmission connector is sleeved with a rotating sleeve and a sliding sleeve, the sliding sleeve is located at the top of the rotating sleeve, and the rotating sleeve is connected with the geophone. The connecting part of the protective upper cap and the transmission connector is sealed through the small sealing ring, and the connecting part of the protective upper cap and the protective lower shell is sealed through the large sealing ring, so that corrosion caused by groundwater vapor is effectively prevented, and the service life of the geophone is prolonged. The problems that in practical application of an existing earthquake early warning and monitoring device, effective sealing waterproof protection design is lacked, and when the device is in an underground humid and corrosive environment for a long time, internal elements of the device are prone to being affected with damp or eroded by corrosive substances to break down are solved.

This application discloses a method for deploying a three-dimensional observation system, an electronic device, and a readable storage medium. The method includes: acquiring the geophone parameters and shot point parameters corresponding to the unit template; constructing a target geophone set based on the geophone parameters; the target geophone set including the coordinates of each geophone; constructing rolling parameters and work area deployment boundaries; performing geophone rolling filling based on the target geophone set, work area deployment boundaries, and rolling parameters to obtain the latest geophone set; performing shot point filling based on the latest geophone set and shot point parameters to obtain a shot point set, and calculating the shot point relationship arrangement; and performing deployment verification based on the latest geophone set, shot point set, and relationship arrangement to obtain the three-dimensional observation system. This method improves the deployment efficiency of the three-dimensional observation system, and the deployment results are regular, facilitating construction.

The application provides a self-powered seismic detector based on triboelectricity and magnetoelectricity and a manufacturing method thereof. The detector comprises a triboelectricity sensitive unit and a magnetoelectricity sensitive unit which are combined with each other. The triboelectricity sensitive unit comprises an N-type magnet mass, a copper Z-shaped spring base, a PDMS friction pad and a signal lead-out wire. The signal lead-out wire is connected with a wireless data acquisition and conditioning circuit module. A power supply lead-out wire is connected with a power management module. The power management module is connected with the wireless data acquisition and conditioning circuit module. The self-powered cable-free seismic detector based on triboelectricity and magnetoelectricity obtained by using the manufacturing method has the advantages of simple and stable structure, light mass, strong anti-electromagnetic interference ability, high sensitivity, self-power supply and no need of external connecting cable. The detector is convenient for arrangement of field workers of seismic exploration and long-term data acquisition.

The invention provides a roadbed compaction quality real-time evaluation method and system for multi-domain signal processing, and relates to the technical field of roadbed compaction detection, and the method comprises the steps: obtaining a vibration wheel acceleration signal, a roadbed vibration signal and a noise signal; obtaining a vibration wheel excitation signal according to the vibration wheel acceleration signal and the noise signal; according to the vibration wheel excitation signal and the roadbed vibration signal after noise reduction, obtaining a wave velocity dispersion characteristic and an attenuation coefficient; obtaining an energy-compactness quantitative relation according to the wave velocity dispersion characteristic and the attenuation coefficient; generating a depth feature vector according to a wave velocity dispersion characteristic and an energy-compactness quantitative relation; and outputting a real-time compaction degree evaluation result according to the depth feature vector. According to the invention, three-dimensional space global continuous sensing of a vibration wave field is realized through the hexagonal geophone array; a time-frequency-space three-domain cascade noise reduction framework is combined, so that the purity of a vibration signal is improved; based on an online incremental learning mechanism, adaptive modeling during working condition change is realized.

The invention belongs to the technical field of data processing and analysis, and particularly relates to a soft soil roadbed-oriented compaction quality real-time prediction and multi-dimensional intelligent evaluation method. The method comprises the following steps: step 1, arranging a plurality of vertical component engineering geophones on the surface of a soil body behind a vibrating wheel of a road roller along the advancing direction to form a geophone array, and connecting all sensors to an edge computing gateway for synchronous acquisition; 2, performing filtering processing on the original seismic waveform record acquired by the detector array; 3, establishing an initial velocity model according to the Rayleigh wave dispersion curve, and outputting a final shear wave velocity model; and 4, according to the final shear wave velocity model, extracting a compaction coefficient estimation value and a compaction uniformity variable coefficient of each depth horizon, and according to a preset determination rule, outputting a compaction quality grade. According to the invention, quality detection can be converted into real-time monitoring in the construction process from traditional postmortem sampling inspection, and compaction quality problems can be found and processed in time.

The application provides a real-time wave fluctuation migration positioning method for microseismic signals and belongs to the technical field of seismic signal processing; solves the problems of complex data preprocessing, insufficient calculation efficiency and low timeliness of existing migration positioning processing technologies; and comprises the following steps: arranging multiple geophones as receiving points of microseismic data according to different depths in the range of a region to be monitored on a coal mine working face floor; counting the number N of triggered geophones, and distributing the data of the N geophones to different GPUs to carry out seismic wave field simulation of the N geophones in parallel; obtaining imaging results of longitudinal waves and transverse waves by using directional aperture constraints and storage-free imaging conditions, fusing the imaging results of the longitudinal waves and the transverse waves, and extracting imaging results with the most focused energy and consistent imaging point positions as microseismic information of microseismic events; and the application is applied to coal mine roof and floor monitoring.

This application relates to a method for determining remaining shot pairs, a method for determining the vacancy and occupancy of geophysical equipment, electronic equipment, and a method for rolling operation of geophysical equipment, relating to the field of seismic data acquisition technology in petroleum exploration. The method for determining remaining shot pairs includes: determining shot point data for all shot points to be excited in the scheme, geophone point data for all geophones in the scheme, and shot-geophone relationship data based on work area data and acquisition construction scheme; determining the shot pair values ​​of geophones falling within a preset acquisition construction template range based on the above data; and determining the remaining shot pairs of geophones based on the shot pair values ​​of the geophones and the information of shot points already excited within the acquisition construction template range obtained during construction. The method further includes: when the remaining shot pair value of a geophone within the acquisition construction template is 0, moving the geophone within the template to the preset position of the geophone in the next round of the construction scheme, and calculating the remaining shot pairs of the geophone.

The application belongs to the field of oil and gas geophysical exploration, and discloses a kind of geophone combination to improve the calculation method of signal-to-noise ratio degree of single shot data, and the signal-to-noise ratio of geophone combination is improved multiple times compared with geophone single point G , the surface wave suppression amplitude value of geophone combination b 1, the refraction wave suppression amplitude value b 2, the reciprocal of the signal-to-noise ratio of geophone combination suppression random interference wave b 3, the amplitude ratio of surface wave and refraction wave k , the surface wave suppression coefficient, refraction wave suppression coefficient and random interference wave suppression coefficient of geophone combination are obtained, and finally the formula of the signal-to-noise ratio improvement multiple of geophone combination compared with geophone single point is obtained.The application is suitable for calculating the degree of signal-to-noise ratio of single shot data improved by geophone combination, the calculation result is clear, the reliability is strong, the calculation method is fast, and the quantitative basis can be provided for the selection of geophone combination number and group distance in seismic acquisition engineering technical design.

The invention provides a detector anti-seepage device for underwater seismic wave acquisition, and the device comprises an upper cavity and a lower cavity which are coaxially buckled, and the upper cavity and the lower cavity are in threaded connection and are interlocked through an anti-loosening groove and an anti-loosening nail, thereby forming anti-shearing and anti-vibration structural sealing. The geophone grounding nail penetrates out of a Y-shaped coupling channel at the bottom of the lower cavity, a rubber sealing ring is embedded in the channel, and the outlet end face is secondarily filled with fast curing silica sol to form channel sealing. A pressurizing module is arranged at the top of the upper cavity, dry nitrogen can be injected into the sealed cavity, pressurizing is conducted actively according to the target water depth, the internal and external pressure difference is kept within a safe interval, and pressure sealing is achieved. Through the three-stage sealing design of structure-channel-pressure intensity, hydrostatic pressure is effectively counteracted, a water seepage path is blocked, and long-term, stable and high-precision work of the detector in an underwater complex environment is ensured.

The invention provides a marine resource detection method, device and equipment, a storage medium and a product. The method comprises the following steps: sending an excitation instruction to a seismic source and a seabed electromagnetic transmitter to enable the seismic source to excite seismic wavelets, and sending a current signal by the seabed electromagnetic transmitter; performing signal acquisition on the seismic wavelets and the current signals by using a submarine seismic detector and a submarine electromagnetic receiver to obtain corresponding seismic sampling data and electromagnetic sampling data; constructing a joint inversion model based on cross gradient constraint according to the seismic sampling data and the electromagnetic sampling data; and carrying out iterative solution on the joint objective function of the joint inversion model, and determining an exploration result. By solving the joint model, an imaging result with high geologic structure consistency can be obtained, so that the recognition precision and reliability of exploration targets such as deep-sea oil and gas reservoirs and natural gas hydrates are effectively improved, and an accurate exploration result is obtained.

The invention provides an automatic calibration method and device for a detector tester, electronic equipment and a medium, and relates to the field of calibration measurement test.The initial moment T0 of a detector for obtaining a damped oscillation signal is obtained through the detector tester, and the method comprises the steps that i-M, i-M + 1 and i-M + 2 are obtained, and sample point signals x [i-M], x [i-M + 1], x [i-M + 2]... x [i] corresponding to the moment i are obtained, and calculating a filtered signal y [i-1] through a formula, when x [i] is greater than G * y [i-1] and G is a multiple of a threshold coefficient, determining a starting moment T0 of a damped oscillation signal, obtaining a damping coefficient, a natural frequency and sensitivity based on T0, and automatically calibrating a detector tester based on the damping coefficient, the natural frequency and the sensitivity. According to the method, the detector tester is automatically calibrated, complicated operation of calibration personnel is avoided, and the calibration precision and the calibration efficiency are improved.

The invention discloses a method for evaluating offset coupling of a seismic exploration observation system, which belongs to the technical field of oil and gas field seismic exploration, and adopts the technical scheme that parameters of an observation system to be evaluated are set; establishing a residual static correction value model of the shot point and the detection point; based on a shot-geophone relationship of an observation system, combined with a residual static correction value model, calculating a synthetic residual static correction value of each seismic channel; the residual static correction values of the shot points and the detection points serve as unknown quantities, the synthetic residual static correction values serve as known quantities, and the residual static correction values of the shot points and the detection points are solved; and calculating a relative error between the residual static correction value obtained by solving and the model value, and evaluating the shot-geophone coupling of the observation system according to the relative error. The beneficial effect of the invention is that the method for evaluating the offset-geophone coupling of the seismic exploration and observation system is provided.

The application provides a controllable source scanning method and device, electronic equipment and storage medium, and belongs to the technical field of seismic exploration. A first scanning signal is used to excite a plurality of different surfaces of a weight and a flat plate, and weight acceleration and flat plate acceleration on the plurality of different surfaces are obtained respectively; a phase difference between the weight acceleration and the flat plate acceleration is obtained, and sample resonance frequencies of different surfaces are obtained; sample scanning signals of different surfaces are determined according to the different sample resonance frequencies, and the sample scanning signals of different surfaces are stored; a second scanning signal is used to excite a weight and a flat plate of a target surface to collect a resonance frequency of the target surface; a target scanning signal corresponding to the resonance frequency is determined based on the resonance frequency of the target surface; and the target scanning signal is used to excite the weight and the flat plate of the target surface. The controllable source scanning method provided by the application can improve the accuracy of the signal received by the geophone.

A portable geological rock stratum stress measuring device comprises a supporting seat, a fixing frame, a supporting rod, an auxiliary mechanism, supporting legs, a measuring mechanism and a data processing mechanism, a first connecting lug plate is fixedly arranged on the side wall of the supporting seat, the top end of the supporting rod is hinged to the first connecting lug plate, the supporting legs are fixedly arranged at the bottom end of the supporting rod, and the measuring mechanism is arranged on the supporting legs and the supporting seat; the measuring mechanism comprises a vertical frame, a detector and a rotating assembly, the vertical frame is fixedly arranged on the top surface of the supporting leg, a rectangular sliding block is fixedly arranged at the top end of the side wall of the detector, a first sliding groove is formed in the vertical frame, the rectangular sliding block is inserted into the first sliding groove and slides along the first sliding groove, and the detector penetrates through the supporting leg. According to the utility model, the supporting legs, the vertical frames and the rectangular sliding blocks are arranged, the supporting legs are arranged at the bottom ends of the supporting rods, and the rectangular sliding blocks and the vertical frames are matched for use, so that the detector penetrates through the supporting legs and is inserted into a rock stratum, the measurement efficiency of the device is improved, stable supporting of the device is ensured, and the stability of the device is improved.

This invention relates to the field of pipe jacking construction technology, specifically to an advanced geological prediction method used in pipe jacking construction under complex strata. The method involves geological surveying of the pipe jacking tunnel area, conducting preliminary surveys of the soil, and determining whether there are significant differences in soil hardness based on soil physical parameters. If such differences exist, the structural topography and adverse geological features within the pipe jacking tunnel area need to be predicted. Monitoring point deployment involves installing geophones on the sidewalls of the pipes in the pipe jacking tunnel. In this invention, geophones are deployed in a spatial array on the sidewalls of the pipe jacking tunnel, allowing for flexible data acquisition and adjustment of geophone positions based on site conditions. A total of [number missing] monitoring points were deployed. The advantages are: the HSP advanced geological prediction technology proposed in this invention for geological surveying of pipe jacking tunnels is fast, essentially not taking up construction time; data analysis after signal processing is rapid, and preliminary conclusions can be drawn immediately after measurement.

The application discloses a surface wave dispersion image generation method, medium, equipment and product, relates to the surface wave exploration field, and the method comprises the steps of obtaining a time domain surface wave signal received by a seismic detector, and arranging the time domain surface wave signal according to spatial positions to form a trace gather; performing S transformation on the time domain surface wave signal of each seismic trace to obtain a complex time-frequency spectrum; based on the time-frequency spectrum, extracting a complex frequency spectrum corresponding to main energy of each seismic trace at each frequency point, and performing normalization processing to obtain a phase spectrum; selecting a plurality of trial phase velocities in a preset phase velocity scanning range, and for each frequency and trial phase velocity, coherently superimposing the phase spectrum corresponding to all seismic traces to construct an energy function in a frequency-phase velocity domain; and when the trial phase velocity is consistent with an actual surface wave phase velocity, obtaining a surface wave phase velocity dispersion energy image based on the energy function in the frequency-phase velocity domain. The application can improve the anti-interference ability and stability of surface wave dispersion imaging under complex geological or noise conditions.

The invention relates to an acoustic-seismic combined monitoring method and device for mountain river bed load, and the device comprises a sensing plate which bears the impact of river bed load particles, a seismic detector which collects a vibration signal, and a plurality of microphone elements which independently collect an acoustic signal. The method comprises the following steps of: extracting first-motion waves of a plurality of collected sound signals, passing through the amplitude of each node of a sensing plate, and generating a sound source intensity distribution image, thereby realizing the identification of the spatial position of a bed load on the sensing plate, and calculating a vibration signal wave packet through a system amplitude threshold value; constructing a correlation function to obtain the maximum positive amplitude of a vibration signal wave packet, calculating the particle size of bed load particles, correcting the eccentric error of the vibration signal, improving the recognition precision of the bed load particle size, and further calculating the sediment transport rate in real time. According to the method, the sound signal and the vibration signal are combined, the eccentricity error of the high-frequency geophone signal is recognized and corrected through the spatial position, the recognition precision of the grain size of the bed load is improved through the corrected geophone signal, and inversion calculation of the sediment transport rate is achieved.

This utility model relates to the field of seismic exploration equipment, and more particularly to a novel seismic detector mounting base, comprising a base body. The bottom layer of the base body has X-axis mounting holes along the X-axis for placing the detector assembly, and a bottom-layer set screw for fixing the detector assembly. The middle layer of the base body has Y-axis mounting holes along the Y-axis for placing the detector assembly, and a middle-layer set screw for fixing the detector assembly. The top surface of the base body has Z-axis mounting holes along the Z-axis for placing the detector assembly, and the upper layer of the base body has upper-layer set screws for fixing the detector assembly. This utility model's base can receive seismic wave signals from multiple directions, simultaneously handling high-frequency and low-frequency signals. The overall structure is compact and stable. This utility model is simple to assemble, and after assembly, it ensures the relative installation position of the seismic detector, has good coupling, and provides high accuracy, high resolution, and high precision in seismic wave reception.

The application discloses an underground space unmanned sensing and detecting system and method, wherein an unmanned detecting carrier platform acquires underground space surface layer data through a sensing radar holder and a unmanned aerial vehicle; then, the detecting target area is determined and the driving path is planned according to the acquired data; meanwhile, the unmanned detecting carrier platform places self-organizing network relay nodes at different positions through a mechanical arm and in combination with signal strength, so that a self-organizing network is finally formed, and the communication between the unmanned detecting carrier platform and the unmanned aerial vehicle in the underground space is ensured to be normal; when the unmanned detecting carrier platform drives to the target area, a seismic observation system is formed through the laid node type detector, and an active seismic source and a transient electromagnetic detecting device are started respectively, so that the seismic wave data and the transient electromagnetic data of the target area are acquired; the application can realize the sensing modeling of the underground space in an unmanned mode, and can also accurately acquire the detecting data of the whole underground space, thereby being convenient for the subsequent analysis and processing of the underground space data.

The invention belongs to the field of seismic exploration data processing, and relates to a pre-stack reverse time migration imaging method based on a GPU parallel technology and a boundary storage strategy, and the method comprises the steps: setting basic model parameters and convolution complete matching layer absorption boundary condition parameters, and determining an absorption boundary region; forward propagation of a seismic source wave field is carried out, and a wave field absorption boundary area and seismic source wave field data at the final moment are stored; synchronously promoting seismic source wave field reverse reconstruction and detector wave field reverse propagation, performing cross-correlation calculation on two sound pressure fields at the same moment, and superposing values at all moments to obtain a reverse time migration imaging value; parallelizing wave field propagation calculation based on a GPU; and reverse time migration imaging values corresponding to the gathers are obtained and superposed, deep gain and multi-stage filtering processing is performed after the superposed reverse time migration imaging values are obtained, and a high-precision migration imaging profile is obtained. The method has the beneficial effects that a high-precision migration imaging profile can be obtained while high calculation efficiency is kept, and a basis is provided for fine interpretation of a complex underground structure.

The invention discloses a method for measuring the distortion of a geophone through linear frequency-raising scanning signals, and belongs to the field of geophysical exploration, and the method comprises the following steps: 1, fixing a detected geophone; step 2, inputting working parameters; step 3, generating a linear frequency-raising scanning signal; 4, outputting an analog signal; step 5, automatically starting scanning to acquire response signals and timing to record length; 6, continuously collecting output signals; 7, automatically starting a data processing and analyzing process; 8, generating a reference signal; step 9, generating a pulse signal; step 10, generating an amplitude spectrum; step 11, calculating the total power of the amplitude spectrum; step 12, calculating a total power sum; step 13, obtaining passband distortion of the detected geophone; step 14, generating a passband distortion test result file; and step 15, displaying or outputting a test result. The sensing signal fidelity capability of the whole response frequency band of the geophone can be quickly and directly quantified.

The application belongs to the technical field of geological advanced prediction, and provides a robot and method for ground node-type geophone arrangement and recovery. A storage device for storing geophones is arranged at one end of a chassis, a conveying device is arranged in the middle, and a drilling device and a mechanical arm are arranged at the other end. A navigation positioning system is further arranged on the chassis. According to information provided by the navigation positioning system, the walking device is controlled to walk to an arrangement position, the drilling device is controlled to drill, the mechanical arm is controlled to place a geophone into a drilled hole, and the arrangement of the geophone is completed. The walking device is controlled to walk to all geophone positions in turn, the mechanical arm is controlled to pick up the geophones on the conveying device, the conveying device is controlled to transport the picked-up geophones into the storage device, and the recovery of the geophones is completed. The robot collects a series of automatic operations such as transportation, measurement, drilling and burying in the arrangement and recovery processes of the geophones, and greatly improves the efficiency of the arrangement and recovery of the node-type geophones.