36 results about "QuakeFinder" patented technology

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.

This invention relates to the field of seismic source monitoring and discloses a dual-bubble seismic source monitoring method based on marine seismic detection. The method involves deploying a seismic detector array in a target sea area, recording seismic wave data generated by the dual bubbles, using the frequency data of the seismic waves as the first target monitoring data for seismic source identification, and using the propagation velocity of the seismic waves as the second target monitoring data. The method analyzes the arrival time of the seismic waves at different detectors to locate the seismic source. It also analyzes the amplitude attenuation characteristics and propagation path of the seismic waves during propagation to assess the earthquake magnitude and calculate the probability of earthquake occurrence based on the assessed earthquake risk level. This method improves the accuracy of seismic source data acquisition, enables accurate identification and location of the seismic source, and thus improves the accuracy of earthquake probability prediction.

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.

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.

This specification relates to the field of compressed air energy storage technology, specifically disclosing a condition monitoring system and method for underground gas storage facilities. The system includes: an acoustic monitoring well located in the upper part of the underground gas storage facility, equipped with a multi-component shear wave detector for acquiring creep or deformation monitoring data of the roof and surrounding rock; a microseismic monitoring well located in the lower part of the underground gas storage facility, equipped with an underground microseismic detector array for acquiring rupture event monitoring data of the surrounding rock; a fault leakage monitoring device, including a tracer gas injector and a tracer gas detection mechanism, for acquiring surface gas concentration monitoring data; and a data processing device connected to a multi-dimensional monitoring network for performing spatiotemporal correlation and cross-validation analysis on the received multi-dimensional monitoring data to generate a fusion assessment result of the structural integrity status and sealing safety risk of the underground gas storage facility. The above solution enables high-precision monitoring and assessment of underground gas storage facilities.

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 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 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 invention discloses a surface wave frequency dispersion image generation method, a medium, equipment and a product, and relates to the field of surface wave exploration, and the method comprises the steps: obtaining time domain surface wave signals received by a geophone, and arranging the time domain surface wave signals according to spatial positions to form a gather; performing S transformation on the time domain surface wave signal of each seismic channel to obtain a complex value time-frequency spectrum; based on the time-frequency spectrum, extracting a complex frequency spectrum corresponding to main energy on each frequency point of each seismic channel, and performing normalization processing to obtain a phase spectrum; selecting a plurality of heuristic phase velocities in a preset phase velocity scanning range, performing coherent superposition on phase spectrums corresponding to all seismic traces for each frequency and the heuristic phase velocity, and constructing an energy function of a frequency-phase velocity domain; and when the tentative phase velocity is consistent with the actual surface wave phase velocity, obtaining a surface wave phase velocity frequency dispersion energy image based on an energy function of a frequency-phase velocity domain. According to the invention, the anti-interference capability and stability of surface wave frequency dispersion imaging under complex geology or noise conditions can be improved.

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.

This invention proposes an adaptive transient surface wave exploration method, equipment, and storage medium. The method includes: exciting a seismic source and acquiring measurement data from the seismic source using geophones; acquiring the surface wave dispersion spectrum; the acquisition of the surface wave dispersion spectrum involves: using one geophone as the central channel and the remaining geophones within a defined range adjacent to the central channel as adjacent channels; calculating the surface wave dispersion spectrum based on the measurement data of the central channel and the measurement data of the adjacent channels; and acquiring the subsurface shear wave velocity structure of each geophone channel based on the surface wave dispersion spectrum, thereby obtaining the subsurface shear wave velocity profile across the entire measurement range to complete the exploration. Furthermore, this invention also discloses an adaptive transient surface wave exploration equipment and storage medium. This invention employs distributed cableless seismic geophones and acquires the subsurface shear wave velocity structure of each geophone channel through channel-by-channel inversion, significantly improving the resolution of the final subsurface shear wave velocity profile within the measurement range, greatly satisfying the requirements for refined exploration in complex environments.

The application provides a kind of seabed node data double-detection matching operator calculation method and device, the method includes based on the water depth of excitation point, the propagation speed of seismic wave in water, the propagation speed of seismic wave in seabed and the offset of first arrival direct wave, the range of direct wave is calculated;Linear moveout correction and common receiver point stack are carried out to the hydrophone direct wave and the seismic detector direct wave in the range of direct wave respectively, to obtain hydrophone common receiver point stack data and seismic detector common receiver point stack data;Based on hydrophone common receiver point stack data and seismic detector common receiver point stack data, double-detection matching operator of each receiver point is calculated in the preset time window by least square method.The seabed node data double-detection matching operator calculation method provided by the application can use direct wave to obtain stable and reliable double-detection matching operator, and provide guarantee for subsequent data processing.

The application discloses a dam disease seismic rapid high-resolution detection system with integrated seismic exploration and vehicle, which comprises an electric vehicle and a pneumatic impact seismic source, the pneumatic impact seismic source is installed at the position of the gravity center of the vehicle body of the electric vehicle, the front wheel of the electric vehicle is connected with a vehicle control faucet, the rear wheel of the electric vehicle is connected with a driving device, the driving device is connected with the vehicle control faucet, a one-key seismic starting button is installed on the vehicle control faucet, the one-key seismic starting button is connected with the pneumatic impact seismic source, an operator controls the seismic starting action of the pneumatic impact seismic source and the data acquisition of a seismic data acquisition instrument through the one-key seismic starting button; a computer support is installed at the front end of the vehicle control faucet, and the computer support is used for placing a tablet computer loaded with an upper computer acquisition control system software; the tablet computer is connected with the seismic data acquisition instrument and the pneumatic impact seismic source, and the seismic data acquisition instrument is connected with a seismic detector. The one-key seismic starting button is arranged, the seismic starting action of the pneumatic impact seismic source and the seismic data acquisition of the seismic data acquisition instrument are controlled by one key.

The invention discloses a microseismic-seepage coupled real-time inversion method for fracture evolution of a mine water sealing layer. Microseismic and seepage data are collected in real time through the three-dimensional microseismic monitoring sensor array and the seepage monitoring device; establishing a three-dimensional seepage numerical model, and constructing a microseismic-seepage bidirectional coupling mechanism; a Bayesian inversion algorithm is adopted to invert fracture parameters in real time, and the model is corrected; early warning is triggered according to the permeability increment, the hydraulic opening sudden increase rate and the like, and closed-loop feedback is formed; and generating a real-time distribution map, an evolution curve and an early warning report guidance project. The three-dimensional micro-seismic monitoring sensor array comprises a DAS system and a short-period geophone, and a sliding time window spectrum analysis method is used for waveform inversion. The Bayesian inversion algorithm is combined with a Markov chain Monte Carlo method. According to the method, the independent simulation defect is overcome, the model prediction error is reduced by 40%, and real-time accurate inversion of fracture evolution and early warning of the instability risk are achieved.

The application discloses a bridge site area concealed geological anomaly body exploration method based on a hole-in-fall weight seismic source, a receiving survey line is laid out in a bridge drilling construction survey area, a standard penetration test or a conical dynamic penetration probe ramming rock-soil layer vibration is used as a seismic exploration seismic source in in-situ drilling test, a plurality of three-component seismic detectors are laid out along a bridge longitudinal section or a transverse section axis where the drilling is located and receive the vibration signals, single-shot seismic records are formed by collating, a diffraction wave event horizon generated by a concealed geological anomaly body is identified, a diffraction wave is extracted by using time-frequency conversion and a polarization parameter is solved, a diffraction wave propagation space line is constructed based on a rectangular coordinate, a diffraction wave propagation path nearest point coordinate of a detector pair is determined by using a space straight line projection method, and an inversion result profile is formed by a discrete grid point number statistical heat map, a diffraction wave occurrence position is identified, and the concealed geological anomaly body is explained.

The present application relates to the field of geophysical exploration technology, specifically to a seismic tomography inversion constraint method based on downhole muon density imaging; the method comprises: arranging muon detectors and seismic detectors in an exploration well, arranging a seismic source on the ground to form a well-ground joint observation system; collecting downhole muon flux and track data, eliminating system errors such as casing and well fluid through noise removal and Geant4 simulation correction to generate a high-precision three-dimensional density model; synchronously collecting seismic first arrival travel time data, taking the muon density model as a priori to construct a grid-matched initial velocity model; constructing a total objective function containing seismic travel time fitting, muon density constraint and regularization term, and dynamically adjusting the density constraint weight according to the depth and signal-to-noise ratio; adopting a coarse-scale and fine-scale layered iteration strategy for inversion, outputting a velocity-density coupled model after convergence, and verifying through drilling cores. The present application realizes high-precision muon-constrained seismic imaging.

The invention provides a geophone embedding inclination angle measurement method and device, equipment and a storage medium, and belongs to the technical field of geophysical exploration, and the method comprises the steps: applying a forward excitation current to a geophone, and obtaining a first time corresponding to a forward peak value; applying reverse excitation current to the geophone to obtain second time corresponding to a reverse peak value; determining the maximum stroke of the inertial body based on factory parameters of the geophone; the maximum stroke is the maximum limit distance which can be reached by the displacement of the inertia body; based on the first time, the second time and the maximum stroke of the inertial body, the centrality offset of the inertial body is determined; and determining the embedding inclination angle of the geophone based on the centrality offset and the maximum stroke. According to the geophone embedding inclination angle measurement method and device, the equipment and the storage medium provided by the invention, the embedding inclination angle of the geophone can be accurately obtained.

The application relates to a geophone data processing circuit and a seismic data processing method based on wavelet conversion, and solves the technical problems of low storage speed of seismic wave data detected by an existing geophone and complex data analysis process of an upper computer, and the method comprises the following steps: (1) seismic waves sensed by a geophone are converted into digital signals by an ADS1281 chip and transmitted into a ping-pong buffer area of an STM32F407 single-chip microcomputer through an SPI bus; (2) after the ping-pong buffer area is full, discrete wavelet conversion is performed on the time sequence of seismic data in the buffer area; (3) data output in the step 2 are written into an SDINBDG4 chip in a self-defined format of a MiniSEED standard seismic data exchange format; (4) data in the SDINBDG4 chip are read out through a GL823K card reader and transmitted to the upper computer; and (5) after wavelet conversion coefficients are analyzed by the upper computer, the original seismic data can be restored through inverse conversion of the wavelet conversion coefficients.

The invention relates to the technical field of seismic exploration, and provides a three-dimensional seismic detector for seismic exploration, which comprises a concentration cover, a magnet is fixedly connected to the bottom end in the concentration cover, a carrying cylinder sleeves the top end of the outer side of the magnet, a coil is wound on the outer side of the carrying cylinder, and a spring piece is arranged between the top end of the carrying cylinder and the concentration cover; lead cylinders are arranged in the middles of the two ends of the wire passing shell, an extension base is fixedly connected to the inner wall of one end of the wire passing shell, and a matched lock hole is formed in one end of the extension base; the two protection assemblies are assembled at the two ends of the wire passing shell respectively, and the protection assemblies are used for being matched with the wire passing shell to form protection of the concentration cover. According to the technical scheme, the technical problem that the application effect of the geophone is affected due to the fact that the geophone is easily corroded by impurities such as water vapor and dust in the field due to the lack of effective protection measures in the prior art is solved.

The utility model provides a geophone installation device which comprises an installation frame corresponding to a geophone, a plurality of ground anchors are fixed on the lower side of the installation frame, an extrusion structure is arranged on the installation frame, the extrusion structure corresponds to the geophone, the extrusion structure comprises a fixing plate, a pressing plate is arranged on the lower side of the fixing plate in a sliding fit mode, and the pressing plate is arranged on the fixing plate. A fixing structure is arranged on the peripheral side of the pressing plate, the fixing structure corresponds to the geophone, the fixing structure comprises a plurality of extrusion blocks, a plurality of fixing blocks are arranged on the mounting frame, and the fixing blocks correspond to the extrusion blocks. According to the utility model, the squeezing structure is arranged on the mounting rack, the pressing plate is arranged on the lower side of the fixing plate in a sliding manner, and the fixing structure is arranged on the peripheral side of the pressing plate, so that the device can be pressed down by sliding down the pressing plate to ensure that the geophone is in contact with the ground, and the geophone can be fixed through the fixing structure to ensure the stability of the geophone; the device is simple and convenient to use, and the installation efficiency of the geophone is improved.

A kind of mine area rock burst regional stress field evaluation system and method based on well-ground-air cooperation, system: underground monitoring device includes high-frequency microseismic sensor and stress sensor;Ground monitoring array includes multiple geophones, multiple geophones are laid in the form of dense array on the ground of mining area;Air satellite monitoring platform is used by receiving InSAR satellite data;Cooperative evaluation module is deployed in cloud platform or local server, and is connected with underground monitoring device, ground monitoring array, air satellite monitoring platform respectively.The method is: system deployment and monitoring equipment accurate layout;Cooperative communication network construction and data transmission configuration;Multi-source data fusion and regional stress field inversion calculation;Dynamic early warning trigger and visual decision support;System iterative optimization and evaluation precision improvement.The invention realizes the step-by-step evaluation of rock burst risk from region to local, and is suitable for low-cost, efficient monitoring of mine safety management.

The application discloses an application method of a reconfigurable antenna based on an intelligent wireless seismic detector, which comprises the following steps: setting communication module transmitter configuration information, and reconfiguring a directional antenna to be designed to work at the frequency; setting communication module receiver configuration information, and checking the validity of a data packet by a program using a checksum every time a gateway receives the data packet from a node; if valid, the program extracts a 64-bit source address and data from the frame; programming a microcontroller to select a direction with a higher received signal strength indicator level; the microcontroller stores the RSSI values of each gateway in all modes and compares them to select the gateway related to the maximum RSSI value; setting the address of the selected gateway, and the node is ready for transmission; converting the seismic wave detected by the sensor node of the wireless seismic detector into an analog voltage signal; then, the analog voltage signal is processed and transmitted to the communication module for real-time transmission to the gateway.

The application belongs to the technical field of exploration devices, and discloses a seismic detector fixing device and a use method. The device comprises two oppositely arranged connecting rods, the end portions of the two connecting rods are provided with connecting discs, and the two connecting discs are connected with a connecting sleeve. The connecting sleeve has a through hole in the inside, the connecting sleeve is provided with a sliding rod which is slidably arranged in the through hole, and the bottom of the sliding rod is provided with a connecting seat. The two ends of the bottom of the connecting seat are fixedly provided with two oppositely arranged connecting discs, the two connecting discs of the connecting seat are connected through a shaft, and the shaft of the connecting seat is rotatably provided with a supporting seat. The connecting disc comprises a sliding groove disc and a sliding block disc. The sliding groove disc of the connecting disc is provided with a sliding groove. The sliding groove is fixedly provided with a blocking block which is used for blocking the sliding groove in the circumferential direction. The application can control the valve, realize the rotation and fixation of the connecting disc through the hydraulic pressure, make the seismic detector rotate to the vertical position and be fixed, and make the seismic detector be installed in the vertical direction.

The invention relates to a drop hammer type seismic exploration seismic source excitation method and device without secondary vibration, the device comprises a seismic source excitation end, a seismic source lifting and releasing end, a synchronous triggering end and a damping end, and the seismic source excitation end comprises a drop hammer end and a hammer cushion end. In seismic exploration construction, the seismic source lifting and releasing end lifts the hammer falling end to a set height and then releases the hammer falling end, the hammer falling end freely falls under the action of gravity and is excited to generate seismic waves after impacting the hammer cushion end placed on the ground, and meanwhile, the synchronous triggering end triggers a seismic detector to start to receive the seismic waves. And the damping end is used for applying resistance and unloading rebound energy generated after the seismic source sub-end impacts the hammer cushion end, so that secondary vibration caused by re-falling of the seismic source sub-end after rebound is prevented, the problem of secondary vibration in a current drop hammer type seismic source is solved, and excitation of high-quality seismic exploration data is ensured. The drop hammer type vibration source has the advantages of being safe, efficient, environmentally friendly and capable of saving energy, and can be widely applied and popularized in industrial production.

The utility model discloses an angle-adjustable geophone test platform, which comprises a horizontally arranged base, and a horizontally arranged fixed plate is arranged on the base. The front side and the rear side of the left end of the fixing plate are provided with an angle-adjustable adjusting platform in a hinged mode through two inverted-L-shaped hinge seats, and the right end of the fixing plate is provided with a supporting plate which is vertically upward and used for supporting the adjusting platform to be in a horizontal state. A fixing block is vertically arranged on the upper end face of the fixing plate located between the two inverted-L-shaped hinge seats, and an adjusting mechanism is arranged between the fixing block and the supporting plate; an epoxy resin seat is arranged on the adjusting platform, and a pair of beryllium bronze pressing sheets is arranged on the epoxy resin seat; an angle measuring instrument is further arranged on the adjusting platform and connected with a power source. The device has the advantages of being simple in structure, convenient to operate and accurate in test result.

The application relates to the technical field of seismic exploration equipment, in particular to a seismic detector and a use method thereof. The seismic detector comprises a detector circuit box, a circuit board, a detector element box, a detector element and a detector fixing tail vertebra. The top end of the detector fixing tail vertebra is in abutment with the bottom surface of the detector element and is used for transmitting seismic waves to the detector element. The circuit board is provided with a longitudinal attitude monitoring circuit, a transverse attitude monitoring circuit and a coupling state monitoring circuit. The longitudinal attitude monitoring circuit is used for monitoring the longitudinal offset attitude of the seismic detector. The transverse attitude monitoring circuit is used for monitoring the transverse offset attitude of the seismic detector. The coupling state monitoring circuit is used for monitoring the coupling state of the detector fixing tail vertebra and soil. Therefore, the application can solve the problems in the prior art, such as insufficient installation attitude precision of the seismic detector, incapability of monitoring, incapability of quantitatively evaluating the coupling state of the seismic detector and soil and the like.

The present application relates to a kind of for high mechanical construction roadway head coal seam strike prediction method, by cantilever excavator, excavator anchor integrated machine construction roadway roof and floor symmetrical layout 2 seismic lines and multiple seismic detectors, construct observation system;With the rock breaking vibration signal generated by mechanical equipment excavation as detection source, collect multiple sets of reflection wave signal to obtain multi-source seismic wave field data;Data are filtered, coherent superposition and ellipsoid focusing imaging processing, extract the reflection energy spectrum and reflection horizon information in front of working face;Through the interactive iterative calculation of multiple sets of results, the detection result is projected to the same profile and the reflection point is picked up, and a reflection point sample library is constructed;Polynomial curve fitting is carried out, and the coal seam occurrence area in front of the working face is circled and predicted in combination with the head exposed coal seam thickness. Use the vibration of construction machinery itself as the source, without additional excitation, through multi-source data interference imaging and iterative optimization, high efficiency, accurately predict the high mechanical construction roadway head coal seam strike.