212 results about "Seismometer" patented technology

The invention discloses a dynamic geological survey system and a construction simulation method. The dynamic geological survey system comprises an intelligent sensing and data acquisition module and a multi-source data fusion processing module, the intelligent sensing and data acquisition module comprises a Raman scattering optical fiber strain sensor array, a three-component seismometer monitoring network and a distributed optical fiber pressure sensing subsystem; the Raman scattering optical fiber strain sensor array, the three-component seismometer monitoring network and the distributed optical fiber pressure sensing subsystem form a multi-dimensional sensing network for shield construction geological monitoring. By means of the integrated intelligent sensing and data acquisition module, geological changes in the shield construction process can be monitored. The Raman scattering optical fiber strain sensor array, the three-component seismometer monitoring network and the distributed optical fiber pressure sensing subsystem jointly form a multi-dimensional sensing network, geological strain, microseismic events, pore water pressure and other key information can be captured, and comprehensive geological data support is provided for construction.

The invention discloses an urban karst water guide channel detection system and method based on earthquake Krauklis waves. The urban karst water guide channel detection system comprises a piezoelectric type vibroseis, an array type earthquake receiving system and a multi-wave seismograph. The piezoelectric vibroseis is used for exciting seismic waves; and the multi-wave seismograph is used for acquiring seismic data acquired by each seismic acceleration sensor in the array type seismic receiving system. The structure can ensure the precision of seismic wave data acquisition each time; separating and extracting Krauklis waves from the acquired seismic wave data by adopting an energy-frequency double-selection method; then, based on the frequency dispersion characteristic of Krauklis waves, a mapping model of crack opening and wave field response is established; and finally, determining the opening degree of the urban karst water guide channel according to the mapping model, and performing inversion to obtain the dynamic flow of the urban karst water guide channel. Through treatment in the mode, the opening degree and the dynamic flow of the urban karst water guiding channel can be monitored, and finally prevention and control over hidden geological disasters are effectively improved.

The invention discloses an improved vibration compensation method suitable for an atom interference gravimeter. The method comprises the following steps: acquiring an atom interference signal and a vibration voltage signal output by a seismometer; initializing population parameters of the improved whale optimization algorithm, wherein the population parameters comprise a search space of a population size, a maximum number of iterations, a gain coefficient K and a delay coefficient tau; the method comprises the following steps: generating an initial whale population by adopting a method of combining Logistic chaotic mapping and Latin hypercube sampling LHS; calculating a phase shift caused by vibration noise and an atomic interference phase delta phi, and calculating the fitness of the whale individual by taking a root-mean-square error of compensated interference fringes as a target function; iteratively updating the population position through an improved whale optimization algorithm, outputting an optimal gain coefficient and an optimal delay coefficient, and obtaining an atomic interference signal after vibration compensation; according to the atomic interference gravimeter vibration compensation method, the global search capability, the local development precision and the stability of a vibration compensation algorithm are improved.

The invention provides an active and passive source metal mine seismic exploration method, which comprises the following steps of: acquiring geological exploration data of a target area, and analyzing and judging to obtain a metallogenic favorable part of the target area; obtaining seismic geologic features of the target area and distribution features of natural field sources; according to the acquired geological exploration data, the passive source seismometers are arranged in a grid mode in a target area to form a passive source detection grid; the active source seismographs are arranged in a cross shape at the favorable metallogenic part to form two active source detection lines; artificial source seismic waves are excited, active source seismic data of the active source seismograph and passive source seismic data of the passive source seismograph are collected, and after the artificial source seismic waves are excited, the passive source seismic data of the passive source seismograph are continuously collected. The problem of active and passive source seismic data fusion acquisition is solved, the exploration cost is reduced, and the working efficiency and the detection precision are improved.

The invention relates to the field of mine geophysical exploration, and discloses a fully mechanized coal mining face geological abnormal area prediction method based on multi-source data, and the method comprises the steps: carrying out the detection of a fully mechanized coal mining face through a radio pit penetrating device and a slot wave seismograph, and obtaining a working face CT image and a slot wave energy attenuation coefficient image; analyzing a distribution rule of a plurality of abnormal prompt areas in the working face CT image, and delimiting a plurality of candidate abnormal areas to obtain an average abnormal amplitude value of each candidate abnormal area; analyzing a plurality of slot wave attenuation high value abnormal regions in the slot wave energy attenuation coefficient imaging, and carrying out overlapping region calculation on the plurality of candidate abnormal regions to obtain a plurality of overlapping regions; carrying out drilling point arrangement and drilling according to the plurality of overlapped areas, and measuring a plurality of drilling trajectories and drilling data corresponding to each drilling point through a trajectory instrument; and according to the plurality of drilling trajectories and the drilling data corresponding to each drilling point, abnormal region prediction data is generated, so that accurate prediction of the abnormal region is realized.

The invention provides a side slope crack passive source seismic wave imaging method, which adopts a multi-wave multi-component seismograph to simultaneously collect a plurality of seismic wave signals on three components, including surface waves, body waves and the like. According to the design, the richness of the data is remarkably improved, so that the physical characteristics of various seismic wave signals can be comprehensively utilized for inversion analysis in data processing. Through combined processing and constraint of different wave types, the problem of multiplicity of solutions in geophysical inversion can be effectively reduced, and the stability and reliability of a result are improved. In addition, due to acquisition of multi-component data, imaging is more comprehensive, and particularly, the method has obvious advantages in description of fracture directivity and geometrical characteristics.

The invention belongs to the technical field of side slope micro-seismic signal analysis and identification, and relates to an automatic side slope rolling stone micro-seismic signal detection method, which comprises the following steps: acquiring signals by using a node seismograph, and establishing a database; acquiring a time-frequency diagram by adopting continuous wavelet transform; building a convolutional neural network introducing a double-attention mechanism, and obtaining a network weight parameter with a loss value small enough by training a loss value reduction function; carrying out abnormal signal pickup on the data detected in real time by using a de-noised MER-AIC method; and taking a pickup signal as the input of the convolutional neural network after continuous wavelet transform, and giving an identification result by a trained model to realize automatic detection. According to the method, abnormal signals can be fully automatically and accurately picked up and side slope rolling stone micro-seismic signals can be detected in data which are collected in real time in a rock side slope and mixed with various kinds of noise, intelligence and automation of real-time detection work of rolling stone events are achieved, dependence on manpower is reduced, and the recognition efficiency is improved.

A curtain grouting reinforcement method for a tunnel group in a deep backfill area, and a reinforcement effect assessment method. The reinforcement method comprises the following steps: S1, calibrating hole positions according to design; S2, mounting a drilling rig; S3, drilling holes; S4, burying orifice pipes; S5, performing grouting; S6, sealing the holes; and S7, performing the next drilling and grouting cycle. Investment saving and safe and efficient construction are achieved, tunnel surrounding rocks can be fully reinforced, engineering geological conditions are improved, tunnel cavern stability is good, and ground surface settlement is small. The reinforcement effect assessment method comprises an inspection-hole drilling method, multi-wave and multi-component engineering seismograph inspection, assessment based on a high-definition drilling video, assessment based on soil and stone mixture parameter changes before and after grouting, etc., such that multi-angle comprehensive analysis can be achieved, grouting reinforcement effect assessment is more accurate, and a curtain grouting effect assessment system is further improved, thereby providing research ideas for inspecting and assessing the grouting effect in soil-rock mixed backfill areas.

The invention discloses a consistency detection method, device and system for large-scale seismic signal acquisition equipment, and relates to the technical field of geophysical exploration. The method is executed by computer equipment in a large-scale seismic signal acquisition equipment consistency detection system, and after background noise original data continuously and synchronously acquired by a plurality of seismic signal acquisition equipment is received, an accumulated power spectrum variance value of each acquisition equipment is obtained through preprocessing and multi-step calculation in sequence; and finally, according to the accumulated power spectrum variance value of each acquisition device and the distance from each acquisition device to the layout center position, determining the acquisition device with an abnormal relationship in the relationship dimension of the accumulated power spectrum variance and the acquisition time or the relative distance. The purpose of efficient, reliable and automatic consistency detection on large-scale seismic signal acquisition equipment can be achieved, and then the detection result can accurately reflect the performance state of a seismic instrument.

The application relates to the technical field of geological exploration, in particular to a wireless seismograph field burying equipment and a working method, which comprises a module square warehouse, a drum stock bin is arranged in the module square warehouse, a cloth drilling integrated machine and a mechanical hand are arranged on one side of the drum stock bin; the drum stock bin comprises a drum stock bin support, one end of the central shaft of the drum stock bin support is connected with a driven chain wheel, one rotary disc is arranged on the inner side of each of the two drum stock bin supports, the two rotary discs are hinged with the outer side wall of a code frame, and the wireless seismograph is placed in the code frame; the cloth drilling integrated machine comprises a moving platform back plate, a guide rail is arranged on the outer side of the moving platform back plate, a first hydraulic cylinder is arranged on the top of the guide rail, a hydraulic motor is arranged on the top of a fixed connecting plate, an oil cylinder is hinged on the outer side of the fixed connecting plate, the oil cylinder is hinged with a lower pressing semicylinder, a soil pressing outer sleeve and a limiting cylinder are arranged below the lower pressing semicylinder, and the side wall of the limiting cylinder is connected with a slide guide cylinder; the mechanical hand can clamp the wireless seismograph in the code frame and send the wireless seismograph into the cloth drilling integrated machine.

The invention relates to the technical field of underwater monitoring, and provides a seabed earthquake observation base station which comprises a seabed base, a seismograph, a floating ball, a locking piece and a protective cylinder, the protective cylinder is fixedly installed on the seabed base, the floating ball is connected with the seismograph through a tying rope, the seismograph is installed in the protective cylinder in a pluggable mode, and the protective cylinder is provided with a lock hole; the seismograph has a first state and a second state in the laying process; in the first state, the floating ball is fixed to the seismograph, the locking piece penetrates through the lock hole, and the seismograph is locked in the protective cylinder. And in the second state, the locking piece retreats from the protective cylinder, the seismograph is pulled out of the protective cylinder under the action of external force, and the cable is released so that the floating ball pulls the seismograph to sink into the landfill pit of the seabed. The seismograph can stably sink into the landfill pit of the seabed, the inclination angle of the seismograph is small, the laying difficulty of the whole seabed seismological observation base station is small, and the monitoring effectiveness of the seismograph is improved.

The utility model discloses a node seismograph single-shot data real-time monitoring system. The system comprises a node seismograph and a node seismograph numerical control module which are located on the ground, and an unmanned aerial vehicle module and an air mounting module which are located in the air. Wherein a plurality of node seismographs are distributed; the unmanned aerial vehicle module can fly above the node seismograph; the aerial mounting module is carried on the unmanned aerial vehicle module, and the aerial mounting module is in communication connection with the node seismograph so as to receive data of the node seismograph and send the data of the node seismograph to the node seismograph numerical control module; the node seismograph numerical control module is in communication connection with the air mounting module so as to monitor the single-shot data state of the node seismograph in real time. Compared with the situation that internal data of a blind acquisition seismograph used in traditional large-scale active source seismic exploration operation can only be exported by means of a special data export box, the system can recover all the data of the node seismograph as long as the unmanned aerial vehicle flies to the sky above the node seismograph.

The invention discloses a mine geology advanced detection and real-time monitoring system based on a six-component seismograph, and relates to the technical field of coal mine underground seismic exploration. The six-component seismographs are respectively arranged on coal walls of a coal face and a driving face, synchronously collect original data at the same time, and upload the collected original data to the background server through the wireless repeater and the industrial looped network; the background server converts the original data into a geophysical inversion result; and the background server carries out real-time dynamic interpretation and artificial intelligence dynamic early warning on parameters of the stratum form, the geological structure and the rock mechanical property according to a geophysical inversion result, uploads early warning information to a control center and distributes the early warning information to personnel and mechanical equipment of a working face. Prediction and early warning of parameters such as stratum form, geologic structure and rock mechanical property are realized, and dynamic high-precision spatio-temporal information is provided for an intelligent mine transparent geologic support system.

The invention relates to the technical field of ocean monitoring, and provides a seabed foundation which comprises an outer cover, an anti-sedimentation plate, a mounting support, a floating ball, a recovery rope and a release mechanism, the outer cover is connected with the anti-sedimentation plate through a breaking bolt to form a mounting space, the mounting support is fixed to the inner wall of the outer cover and located in the mounting space, and the floating ball is connected with the recovery rope. The mounting space is divided into accommodating cavities so as to accommodate the seismograph; the recovery rope is respectively connected with the mounting bracket and the floating ball, and in a use state, the release mechanism fixes the floating ball to the top wall of the outer cover; in a recovery state, the release mechanism releases the floating ball, the floating ball drives the outer cover and the mounting bracket to float to the sea surface through the recovery rope, and the breaking bolt is used for breaking when the recovery rope is pulled by external force, so that the anti-settling plate is separated from the outer cover. The recycling convenience of the seabed base is improved, frogmen are not needed, and the recycling efficiency of the seabed base is high.

The purpose of the present invention is to provide a method for synthesizing the acceleration waveform of a destructive earthquake at a fixed station. The method relies on the empirical Green's function method, firstly obtains a relatively accurate source model and source parameters by synthesizing the acceleration time history of a strong motion instrument, and then uses the obtained source model and source parameters in the simulation of the large earthquake acceleration waveform at a broadband seismograph, and uses the small earthquake waveform recorded by the broadband seismograph as the Green's function to synthesize the large earthquake acceleration waveform at the broadband seismograph.

A micro-motion exploration method based on Koch fractal curve, first determine the target area, then set the order N to zero, then determine the zero-order Koch triangle, then determine the first-order to N-order Koch triangle in turn, until the order N is the final value, then bring the order N into the Koch fractal curve to generate the N-order Koch triangle graph, the N-order Koch triangle graph includes a plurality of sharp points and a center point, all sharp points and the center point are the layout points of the seismograph; then lay out the seismograph on the layout points, then monitor by the seismograph to obtain the micro-motion signal, then obtain the shear wave velocity three-dimensional structure, after laying out, a plurality of Koch triangles with different edge lengths are obtained, so the micro-motion signals with different station spacings are obtained, then the shear wave velocity three-dimensional structures of multiple depths can be obtained; without multiple laying, the exploration efficiency is higher. Therefore, the design can obtain the shear wave velocity three-dimensional structures of multiple depths at the same time, and the exploration efficiency is higher.

The invention discloses a disaster-causing tectonic earthquake advanced detection device and method capable of stopping drilling along with a hole, a hollow rod body is of a double-layer structure formed by an inner pipe and an outer pipe, and an annular channel between the inner pipe and the outer pipe serves as a first water injection channel; the shock absorber is installed in the inner pipe, away from the drill bit and used for containing the node type seismograph, a second water injection channel is formed in the shock absorber, and the hydraulic pressurization system is used for injecting high-pressure water into the inner pipe. When water is injected through the first water injection channel, the strong spring, the metal impact block and the piston can be reset. According to the mode of conducting seismic detection while drilling, under the condition of adapting to the drilling seismic construction environment, drilling construction is achieved, meanwhile, the capability of detecting a front disaster-causing structure is achieved, and the advantages of being long in distance, large in range and high in precision are achieved.

The application relates to the technical field of detection equipment, and discloses a seismic signal collection device and a collection method for geophysical detection, which comprises multiple node-type seismographs; further comprises a holding frame, the holding frame is composed of two end plates, connecting frames and a handle, two connecting frames are fixed at two ends of the handle, the bottoms of the two connecting frames are fixed with the two end plates respectively, and a plurality of placing mechanisms are arranged between the two end plates; and a plurality of ground insertion rods, a plurality of insertion holes matched with the ground insertion rods are arranged on the shell of the node-type seismograph, and the plurality of ground insertion rods are correspondingly inserted into the plurality of placing mechanisms, the holding frame designed in the application can be docked with the plurality of ground insertion rods, a plurality of node-type seismographs are sleeved outside the plurality of ground insertion rods which are transversely inserted in the placing mechanisms, so that a staff member can take a large number of node-type seismographs at a time, a plurality of measuring points can be arranged at a time, and the arrangement efficiency is improved.

The invention discloses an underground structure scanning method for a controlled active source. According to the method, a known signal generated by an active source is equivalent to a record of a virtual station, the virtual station and an actual six-component seismograph station form a station pair, and the phase velocity of a wave under the distance is estimated through a phase difference / travel time difference between the virtual station and the actual six-component seismograph station and a geometric distance relationship between the source and the station; the obtained phase velocity is actually equivalent to a frequency dispersion curve at the midpoint of the connecting line of the source and the station, so that the phase velocity-depth structure from the source to the midpoint of the station can be obtained by performing inversion by using the obtained frequency dispersion curve; as the active source moves in the measurement area, a group of signals can be generated at different positions respectively, and a series of virtual midpoints are formed for the single-station six-component seismograph, so that the density of measurement points is remarkably increased in space. On the basis, through combination with an inversion result of a single station, three-dimensional underground velocity structure modeling with high credibility and high spatial resolution can be realized.

A method for detecting an underground cavity by using an irregular three-dimensional array belongs to the technical field of underground detection, and is characterized in that a plurality of high-sensitivity digital seismographs are utilized, a detection area is well covered with a ray path, and each digital seismograph collects irregular micro-amplitude vibration information of the surface of the detection area all the time; a surface wave signal is extracted from micro-amplitude vibration information, then a cross-correlation function between digital seismometers is obtained through background noise cross-correlation calculation and superposition, and a Rayleigh wave phase velocity frequency dispersion curve is obtained based on a multiple filtering and extended space autocorrelation (ESPAC) method. And finally, inverting a three-dimensional phase velocity structure below the detection area based on the frequency dispersion curve of each grid node, and performing two-dimensional or three-dimensional mapping display on an inversion calculation result through mapping software. The method is simple in field work operation, flexible in laying according to field conditions, simple and rapid in data processing flow and mature in algorithm, and can rapidly and accurately position the underground cavity position.

The invention discloses an intelligent self-stabilization very-broadband seismometer which is arranged on a platform base and comprises a shell and three mechanical pendulum bobs arranged in the shell, and further comprises a detection mechanism and an adjusting mechanism, automatic zero setting of the very-broadband seismometer is achieved through mutual cooperation of the detection mechanism and the adjusting mechanism, zero setting commands are not needed in the whole process, and automation is high. Specifically, the adjusting mechanism comprises a rotating table fixed to the table base, a mounting base is arranged on the rotating table, and a plurality of angle adjusting rods are arranged between the mounting base and the rotating table; the shell is assembled on the mounting base, the detection mechanism comprises an assembling bin covering the peripheral side of the mechanical pendulum bob, an avoiding distance is formed between the bin wall of the assembling bin and the mechanical pendulum bob, and multiple sets of distance measuring modules matched with one another are arranged on the peripheral side of the side wall of the mechanical pendulum bob and the peripheral side of the side wall of the assembling bin in the vertical direction; the distance measuring module constructs a zero setting coordinate of the mechanical pendulum bob according to distance data between the mechanical pendulum bob and the assembly bin, and the rotating table and the mounting base automatically perform zero setting on the mechanical pendulum bob according to the zero setting coordinate.

The invention belongs to the technical field of node type seismographs, and particularly relates to node type seismograph automatic disassembly and assembly equipment which comprises a conveying table and a PLC electrically connected with the conveying table, posture constraint assemblies for adjusting the posture of a storage box are symmetrically installed on the conveying table, and an installation frame is fixedly installed above the middle of the conveying table. A control unit electrically connected with the PLC is arranged on the mounting frame, the control unit drives the dismounting panel to move to enable mounting holes formed in the dismounting panel to be matched with node seismographs in the storage box, and mounting holes with the same number as the node seismographs in the storage box are uniformly formed in the dismounting panel; and a small servo motor electrically connected with the PLC is fixedly arranged in each mounting hole. According to the invention, the automatic separation of the data packet and the battery pack is realized, the whole box of node seismograph can be disassembled or assembled each time, the working efficiency is high, the workload is reduced, and the processing time is shortened.

The utility model provides a low noise ultra wide band seismometer, including seismometer casing, magnetic shielding casing, heat preservation cover, trisecting mechanical pendulum and seismometer circuit, magnetic shielding casing and heat preservation cover are both arranged in seismometer casing, heat preservation cover is arranged outside magnetic shielding casing, and the seismometer circuit is arranged in the seismometer casing. The internal space of the seismometer shell is divided into a mechanical pendulum body mounting cavity and a circuit mounting cavity by the magnetic shielding shell, the three-direction mechanical pendulum body is mounted in the mechanical pendulum body mounting cavity, and the seismometer circuit is mounted in the circuit mounting cavity; the three-component mechanical pendulum body comprises three mechanical pendulum bodies, the three mechanical pendulum bodies are evenly distributed in the three-component direction by 120 degrees, each mechanical pendulum body comprises a pendulum body support, a zero setting transmission mechanism and a pendulum bob assembly, and the zero setting transmission mechanism is used for conducting zero setting on the pendulum bob assembly. According to the low-noise ultra-wideband seismometer, the observation frequency band range of the seismometer can be widened, and the self-noise level of the seismometer can be reduced.

The invention discloses an automatic leveling and locking device for a seismograph, and relates to the technical field of earthquake monitoring equipment.The automatic leveling and locking device comprises a device body and a base, the device body comprises a vibration assembly, a locking assembly connected with the vibration assembly and a linkage lifting assembly connected with the locking assembly, and the locking assembly comprises a locking frame, a motor and a screw A; the leveling device has the advantages that the motor drives the first belt wheel and the second belt wheel to drive the sliding block on the screw B to move under the action of the belt, meanwhile, the lifting plate and the sliding block on the other side are driven to move on the sliding rod, and the base is leveled in cooperation with the horizontal sensor B; two spring telescopic rods are started to drive a linkage plate at the bottom to ascend and descend at the same time, two sliding plates slide in a groove body of a connecting plate, a seismograph A and a seismograph B are adjusted in parallel through a cooperatively-arranged horizontal sensor A, and the consistency and accuracy of overall earthquake monitoring data are met.

The present disclosure relates to a seismograph, which includes: a crystal oscillator for generating a local clock signal; a data acquisition unit, coupled to the crystal oscillator and configured to acquire sampled data based on the local clock signal, and the data acquisition unit is further configured to acquire a fixed amount of sampled data within each period of the clock signal; a reference clock receiver for receiving a reference clock signal; and a controller, which is coupled to the data acquisition unit and the reference clock receiver and processes the sampled data. In addition, the present disclosure also relates to a method for managing sampled data of a seismograph, a controller, a non-transitory machine-readable storage medium, and a program product.

The invention belongs to the technical field of ocean seismic wave detection, and discloses a power supply and data acquisition system and method for an electric control cabin of an earthquake buoy. The power supply switching board is used for carrying out hardware type automatic switching through two mutually exclusive power supply circuits and the holding characteristic of the magnetic latching relay, completing that the other circuit supplies power to different seismographs and data acquisition boards when any circuit is disconnected, and starting a standby battery when the two power supply circuits are both disconnected. Power is supplied to different seismometers and data acquisition boards through magnetic latching relays; the data acquisition board is used for acquiring the temperature and humidity, multi-path current and voltage and attitude of the electric control cabin and acquiring attitude data of the seismograph fixed together with the electric control cabin; and the data transmission module is used for uploading data. The power supply, the data link, the data acquisition and the seismograph all adopt two sets of redundant backups, and the two sets of systems are completely independent and do not influence each other.

The invention relates to the technical field of coal mine underground geophysical exploration, and provides a coal mine underground micro-seismic source and speed simultaneous inversion method and system, and the method comprises the steps: collecting micro-seismic original data through a micro-seismic detector and a seismograph; picking up the direct wave first arrival travel time t real in the micro-seismic record; assuming an initial speed model and a seismic source position, and carrying out travel time forward modeling and ray path forward modeling to obtain theoretical travel time t < theoretical k > and a Fresnel body ray path; constructing a travel time residual term and a nonlinear objective function of a regularization constraint term based on travel time data, a speed model and a seismic source position; and solving a corresponding normal equation, inverting a speed model and a seismic source position, and outputting a final result through iterative convergence. According to the method, the coupling relation between the speed model and the seismic source position is utilized, and the joint objective function is directly optimized through inversion, so that the detection precision of the underground coal mine speed model and the seismic source position is improved.

An earthquake detection method is disclosed. The method comprises the following steps: receiving a first signal and at least a second signal, wherein the first signal is triggered in response to a first vibration state of a main detection site, and the at least a second signal is triggered in response to at least a second vibration state of at least a backup detection site; determining whether a quantity of those being enabled among the at least a second signal satisfies a quantity ratio condition, and determining whether the first signal and the quantity of the at least a second signal are both enabled at a specific time point, wherein the first and the quantity of the at least a second signals respectively have a first and at least a second initial enabled time points; and determining there is a real earthquake event when an interval between the first and the at least a second signal satisfies a time relationship.

The application discloses a node seismic data transmission method and system based on piggyback communication. The method comprises the following steps: a user end generates a piggyback instruction based on the file name of seismic data files needing retransmission and the corresponding node seismic instrument equipment ID and sends the piggyback instruction to a cloud server; the cloud server judges whether the piggyback instruction relative to the node seismic instrument is received in response to a communication link establishment request sent by the node seismic instrument, and if yes, sends the piggyback instruction to the node seismic instrument together with a response message relative to the communication link establishment request; the node seismic instrument judges whether the piggyback instruction is contained in the message sent by the cloud server, and if yes, performs seismic data time-sharing transmission first, and then sends the seismic data files needing retransmission to the cloud server. The system comprises various functional modules for realizing the above steps. According to the application, the problem that the seismic data file transmission is incomplete or lost in the process of existing seismic data file time-sharing transmission can be solved.

The invention discloses an integrated mobile VS30 measuring device, a design method and a measuring method, and belongs to the field of geological prospecting. The integrated mobile VS30 measuring device comprises a mobile seismic source vehicle and a mobile measuring array which is in traction connection with the mobile seismic source vehicle through a land towing cable; the mobile measurement array is composed of a plurality of node seismographs which are uniformly arranged on a land towing cable and are slidably coupled with the ground, and the node seismographs are communicated with a master control terminal carried on the mobile seismic source vehicle. By adopting the integrated mobile VS30 measuring device, the design method and the measuring method, rapid and continuous measurement can be realized through mobile seismic source vehicle-towing cable-node type earthquake, and meanwhile, the measurement precision and reliability are ensured by utilizing the joint inversion of GLM-XGBoost (improving the nonlinear fitting precision), so that the engineering requirements of urban site classification, evaluation and the like are comprehensively met.