119 results about "Seismometer" patented technology

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 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 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.

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 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 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 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.

The present application relates to seismic instrument testing technology, and discloses a seismic instrument testing method based on data communication, which comprises the following steps: a host computer is connected with a seismic instrument through handshaking, and the seismic instrument obtains testing instructions from the host computer; the testing instructions are analyzed to obtain a testing type and enter a testing mode; when the testing type is index testing, the seismic instrument is tested according to the testing instructions to obtain a first testing result; when the testing type is state testing, the seismic instrument is tested according to the testing instructions to obtain a second testing result; the first testing result and the second testing result are sent to the host computer, and the testing mode is exited; the seismic instrument is updated according to the testing data, and the testing is completed after the updating is finished. The present application also discloses a seismic instrument testing device based on data communication, an electronic device and a storage medium. The present application can improve the seismic instrument testing efficiency.

The utility model relates to the technical field of earthquake monitoring, and discloses an earthquake monitoring station field calibration device comprising a supporting seat; the rotating disc is rotationally connected to the supporting seat, and a pointer is arranged on the rotating disc; the supporting seat is located on the peripheral side of the rotating disc and provided with a dial, the dial is provided with scale marks, and the pointer points to the scale marks; the north seeker is mounted on the rotating disc, the north seeking direction of the north seeker is the same as the direction of the pointer, and the north seeker and the pointer rotate synchronously. According to the utility model, the north seeker is arranged on the rotating disk, the north seeker can determine the true north direction value of an attached carrier by measuring the rotation angular velocity of the earth, the process is not interfered and influenced by an external magnetic field or other environments, the north seeker and the pointer synchronously rotate, and when the orientation direction of the pointer is true north direction, the north seeker and the pointer are in real north direction. A seismometer may be mounted in this direction. Therefore, the installation precision of the seismometer is improved, manual operation errors are reduced, and the precision of earthquake monitoring and early warning is improved.

The invention relates to a dense array seismograph embedding switchable hole pattern hole forming device and a use method, the device comprises a main drill assembly, a cantilever cutter assembly, a feeding control assembly and a controller, the main drill assembly comprises a rotary power part, a transmission part, a drill rod and a main rack, the rotary power part is arranged in the main rack and is sequentially connected with the transmission part and the drill rod, and the cantilever cutter assembly is arranged on the main rack and is connected with the transmission part and the drill rod; the cantilever cutter assembly comprises a plurality of cantilevers, a cutter, a second connecting piece and an adjusting unit, each cantilever comprises a connecting part and a measuring part, the measuring part is provided with a guide sliding groove, the sliding block is in sliding connection with the guide sliding groove, the two ends of the second connecting piece are connected with the sliding block and the cutter respectively, and the locking mechanism is arranged on the sliding block to lock the position of the sliding block. The feeding control assembly comprises a feeding power piece, a shell and a support, the top end of the feeding power piece is connected with the shell, the bottom end of the feeding power piece is connected with the main rack, and the connecting part of the cantilever is connected with the main rack through a detachable first connecting piece. Therefore, according to the design, rapid switching between the round hole and the square hole can be achieved on the same device.

The present application provides a kind of microseismic acquisition method, comprising the following steps: S1: connect detector to seismograph by cable, arrange detector according to design;S2: start microseismic data measurement, obtain the microseismic data of one measuring point or one arrangement;S3: move detector to next measuring point or arrangement;S4: repeat the measurement of steps S2 and S3;S5: collect the measurement signal of each detector, calculate the distance between base point and measuring point according to the position coordinates of base point and measuring point;S6: the measurement data of base point and measuring point are cross-correlated in frequency domain, and the correlated trace gather is formed;S7: for the arrangement of n detectors, at least n-3 correlated trace gathers of arrangement can be extracted;S8: use correlated trace gather to extract dispersion curve, and carry out transverse wave velocity inversion and other result drawing.The present application realizes the cross-correlation of linear arrangement or array in working area through base point measurement, improves the calculation accuracy of dispersion curve between array, and achieves the purpose of fine detection.

The application discloses a ground collapse detection and early warning scheme based on real-time three-dimensional imaging, and a method thereof comprises the following steps: acquiring background noise data of a target underground structure through a seismometer array installed at a target underground structure detection site; then, surface wave extraction and dispersion curve calculation are carried out based on the background noise data measured by the seismometer; imaging of the underground three-dimensional structure is carried out through a seismic interference imaging technology, the change of the wave velocity of the underground medium is monitored, so that the abnormal area of the velocity structure is identified and positioned, and a reliable basis is provided for identifying the precursor information of the ground collapse. The technical scheme provided by the application can realize real-time monitoring and early warning of the ground collapse risk which is prone to occur in cities in the field of city safety risk monitoring, early warning and management and control, improve the city ground collapse early warning and emergency disposal capacity, and greatly reduce the collapse risk hidden danger and guarantee the safety of people's lives and property.

The invention provides a debris flow disaster early warning method and system, and the method comprises the following steps: S1, carrying out the real-time analysis of a real-time data flow monitored by a current seismograph through an asynchronous sliding monitoring mechanism based on a long-time window and a short-time window, and intercepting a first abnormal waveform; s2, outputting a probability value that the first abnormal waveform is a debris flow earth sound signal, and if the probability value is greater than a threshold value, turning to step S3; s3, matching a second abnormal waveform associated with the first abnormal waveform in the adjacent seismograph based on an arrival time association criterion of propagation of the debris flow earth sound signal in spatial distribution; s4, counting the number of second abnormal waveforms meeting debris flow waveform characteristics, if the number is greater than a preset value, forming a debris flow event together, and going to step S5; and S5, carrying out quantitative analysis on the waveform characteristics of the first abnormal waveform and the second abnormal waveform in the debris flow event, and carrying out graded early warning.

This invention provides a method for linking earthquake warnings with the identification of the number of people inside a room. [Solution] The method includes acquiring seismic waves in real time using an acceleration sensor, performing band-pass filtering to obtain seismic waves with a high signal-to-noise ratio, determining the maximum acceleration, maximum velocity, and maximum displacement based on the seismic waves with a high signal-to-noise ratio, predicting the seismic intensity of a seismometer, acquiring earthquake parameters announced by the national public warning system, acquiring the location of the building inside and the seismic design intensity, calculating the source distance based on the epicenter, source depth, and location of the building inside, calculating the earthquake warning intensity from the magnitude and source distance, calculating the earthquake intensity from the seismometer intensity and the earthquake warning intensity, acquiring the number of people inside in real time using a human presence sensor, determining the linked alarm level based on the earthquake intensity, seismic design intensity, and number of people inside, and issuing an alarm and transmitting alarm information according to the linked alarm level.

The invention provides a debris flow vibration signal monitoring method and system capable of preventing construction blasting interference. The debris flow vibration signal monitoring method comprises the following steps: S1, receiving a continuous vibration signal monitored by a seismograph in real time and preprocessing the continuous vibration signal; s2, carrying out real-time analysis on the real-time data stream obtained after preprocessing through an asynchronous sliding monitoring mechanism of a long-time window and a short-time window, and detecting whether an abnormal waveform of signal energy sudden increase exists or not; s3, starting from the starting point of the abnormal waveform, detecting whether the energy of the signal in a preset high-frequency band exceeds a first threshold value, and if so, marking the moment when the energy exceeds the first threshold value for the first time as a high-frequency feature point; s4, starting from the high-frequency feature point, calculating whether the energy attenuation rate of the signal in the preset time period exceeds a second threshold value or not, and if yes, judging that the abnormal waveform is a construction blasting signal; and S5, generating and issuing debris flow early warning for the abnormal waveform which is judged to be the debris flow vibration signal.

The embodiment of the present application provides a kind of seismic data monitoring system, method and device, seismic data monitoring system includes: multiple seismographs, seismograph switching control module, buoy and server, multiple seismographs include first seismograph and second seismograph;Seismograph switching control module obtains the seismic data collected by first seismograph, and monitors the operating state of the first seismograph, when the first seismograph is abnormal, the first seismograph is repaired, when the first seismograph is not successfully repaired, control is closed first seismograph, and control is opened second seismograph, seismograph switching control module sends seismic data to buoy by first communication mode, and buoy sends seismic data to server by second communication mode, to make server monitor seismic data.Based on the seismic data monitoring system, method and device provided in the present application, the real-time performance and accuracy of monitoring seismic data can be improved.

The invention discloses a six-component micro-seismic single-measuring-point stratigraphic structure inversion method, which comprises the following steps of: 1) selecting a measuring point in a target area, and installing a six-component seismograph at the measuring point; 2) collecting and storing the six-component seismic signal of the measuring point, and synchronously updating the quality coefficient of the collected data; if the quality coefficient is not greater than the set quality coefficient threshold, continuing to collect the seismic signal and synchronously updating the quality coefficient of the collected data; 3) setting a time window width according to the minimum time length required by each slice, and carrying out time domain windowing slicing on the six-component seismic data; 4) extracting a phase velocity frequency dispersion curve corresponding to the slice data, and obtaining a quantitative relation between the phase velocity and the frequency; and 5) according to the correlation coefficient of each slice data, performing weighted average on the phase velocity corresponding to the slice data to obtain a final phase velocity frequency dispersion curve of the measuring point, establishing a mapping relation between the phase velocity and depth, obtaining structure information of different depths of the stratum at the measuring point, and performing inversion on the stratum phase velocity profile.

The utility model discloses a vertical pendulum body hinge zeroing structure of a seismic instrument. Relates to the seismometer vertical field. The zero position of a vertical pendulum body of an existing seismometer is influenced by factors such as temperature and altitude, so that the zero position of the vertical pendulum body of the seismometer cannot return to the initial position. The device comprises a leaf spring fixing seat and a ground plate, the end part of the leaf spring fixing seat is fixedly connected with a bent leaf spring, the leaf spring fixing seat and the ground plate are provided with a vertical pendulum body hinge zeroing structure, one end of the vertical pendulum body hinge zeroing structure is fixed on the ground plate, and the other end of the vertical pendulum body hinge zeroing structure is fixed on the ground plate. The vertical pendulum body hinge zeroing structure adjusts the bending strength of the leaf spring connected to the leaf spring fixing seat, so that the vertical pendulum body hinge zeroing structure adjusts the zero position; the vertical pendulum hinge zeroing structure comprises a screw assembly, a motor, a motor fixing sleeve and a motor base. The end, close to the leaf spring fixing base, of the screw assembly is rotationally connected with the leaf spring fixing base after being hinged, and the end, close to the motor, of the screw assembly is fixedly connected with the motor. The utility model is applied to the seismometer vertical pendulum body field.

This application provides a seismic data acquisition method and apparatus. The method includes: acquiring and storing raw seismic data of a selected area in the field using pre-deployed nodal seismometers; transmitting the raw seismic data to an indoor private cloud platform at preset sampling intervals using the nodal seismometers until sampling is complete; after the nodal seismometers are retrieved, retrieving the raw seismic data stored in the nodal seismometers via a 5G private network; sorting the raw seismic data in the nodal seismometers and the raw seismic data in the private cloud platform to obtain target seismic data, and removing all the raw seismic data; and saving the target seismic data in the private cloud platform. This enables remote operation and automation of the nodal seismometers, thereby improving the efficiency of parameter configuration and data copying and retrieval, reducing the degree of manual intervention, and enhancing the level of automation.

The present invention relates to a method (100) for measuring at least one spatial, temporal and / or spatiotemporal gait parameter, comprising: Acquiring seismic signals by at least three time-synchronized seismographs positioned to span the floor of a measurement zone during walking of at least one walker on the floor of the measurement zone (101); Receiving and processing the seismic signals by an analysis device to obtain a combined signal representing an aggregate signal of the seismographs (102); Identifying and extracting footsteps events from the seismic combined signal, wherein each footstep event corresponds to the contact between a walker's foot and the floor in the measurement zone (103); and Calculating at least one gait parameter from the combined signal and the extracted footstep events (104), wherein the combined signal is generated by temporally aligning the signals from the seismographs and wherein morphological filtering is applied to the combined signal for noise reduction. In addition, the present invention relates to a system for measuring at least one spatial, temporal and / or spatiotemporal gait parameter (200).

The invention discloses a seismograph data automatic synchronization method and device based on an FTP protocol, and relates to the technical field of earthquake monitoring data transmission. Obtaining original data of the seismograph, dividing value grades through the value density hierarchical model, and forming a graded data pool; building a block-level elastic splitting architecture, calculating dynamic splitting granularity according to real-time data generation amount, peak traffic and link bandwidth, splitting data and adding exclusive identifiers to high-value data blocks; a priority dynamic scheduling architecture is designed, transmission queues are allocated based on time sequence-value double factors, and high-value data occupy a core bandwidth; transmission is completed based on an FTP protocol, transmission state data are collected through a link adaptation regulation and control model, the splitting granularity is fed back and corrected, and dynamic matching is achieved. According to the method, high-value data is preferentially and efficiently transmitted, the integrity of medium and low-value data is considered, the transmission timeliness, the bandwidth utilization rate and the system robustness are improved, and the method is adaptive to complex links and data characteristics.

The present disclosure relates to the field of geophysical exploration technology, and discloses a quality control method and system for shotpoint excitation. The method is applied to a quality control analysis module and comprises: for each target shotpoint in a to-be-tested region, in response to an excitation module of an excitation assembly being excited at the target shotpoint position, real-time receiving optical fiber seismic data from a seismic data processing module, wherein the to-be-tested region has at least one target shotpoint, and the to-be-tested region has seismic instruments being collected; comparing whether the quality control result of the optical fiber seismic data meets the expected requirement to determine whether the excitation quality of the shotpoint meets the requirement; and in response to the excitation quality of the shotpoint meeting the requirement, determining that the excitation of the target shotpoint is effective. The method can solve the problem that the current seismic instruments cannot perform real-time quality control on the excitation state of the shotpoint, and improve the excitation production efficiency and quality of geophysical exploration.

A double-fiber grating geophone with a double-hinge symmetrical structure is characterized in that the upper part of a base is provided with a second small mass block through a connecting rod, the two ends of the second small mass block are symmetrically provided with a first hinge and a second hinge, the end part of the first hinge is provided with a first small mass block, and the first small mass block is sleeved with a first large mass block; a third small mass block is arranged at the end of the second hinge, a second large mass block sleeves the third small mass block, a first optical fiber and a second optical fiber are arranged between the first large mass block and the second large mass block, the first optical fiber is located at the top of the mass block, the second optical fiber is located at the bottom of the mass block, and gratings are inscribed on the first optical fiber and the second optical fiber. The gratings on the first optical fiber and the second optical fiber are suspended; when one end of the fiber bragg grating is fixed and the other end of the fiber bragg grating vibrates along with the mass blocks, the mass blocks on the left side and the right side simultaneously vibrate on the double gratings of the detector, so that the sensitivity of the detector is improved to twice that of a single fiber bragg grating.

The invention relates to an accurate matching method for a geophone and a seismic instrument, and the method comprises the following steps: S1, determining key matching parameters of the geophone, the key matching parameters comprising output resistance, sensitivity, a damping coefficient and natural frequency; s2, setting the output resistance to be not greater than 1 / 20 of the input resistance of the seismic instrument; s3, the natural frequency is set to be 2.5 Hz so as to adapt to receiving of signals from 1 Hz to 200 Hz; s4, the damping coefficient is set to be 0.707, so that a good temporal-spatial resolution is obtained; and S5, setting the sensitivity to be 160 V / m / s, and enabling the sensitivity to be matched with the maximum allowable input voltage of the seismic instrument. According to the method, the input characteristics of the seismic instrument are fully considered through the matching method, so that when the matched seismic instrument works, the working characteristics of the geophone are basically consistent with the nominal index, and then the seismic signal response effect of the geophone is guaranteed in a full-band mode.