74 results about "Hypocenter" patented technology

A method for the detection and localization of microseismic events is proposed which operates in real-time. It provides hypocenters in three spatial dimensions along with an estimate of the event origin time. Sensor positions may be distributed in 3D space, and are not confined to linear arrays in vertical wells. The method combines and improves two existing approaches. For detection and localization purposes the method makes use of the generalized beam-forming and forward modeling properties defined in the “CMM” algorithm. For location refinement, the method uses a stabilized version of the generalized “Geiger” approach.

The invention discloses a tunnel heading-along earthquake advanced detection device taking a heading machine as an earthquake focus and a method thereof. The device comprises an earthquake detector, an earthquake focus signal receiving sensor and an earthquake wave receiving detector array, wherein the earthquake focus signal receiving sensor is arranged on the arm of the heading machine; and the earthquake wave receiving detector array is arranged on a tunnel wall. The method comprises the following steps of: continuously acquiring earthquake wave signals through a three-component sensor which is coupled on the arm of the heading machine and a three-component sensor array which is arranged on tunnel surrounding rock by taking vibration generated by cutting rock with a cutting head during working of the heading machine as a hypocenter; and recording the acquired signals for processing, and forecasting the position and structural detail of a geological anomalous body in front of a tunnel by analyzing received wave field imaging geometrical characteristics. Due to the adoption of the device and the method, the problem of oneness of an earthquake wave field of a pure explosive source in near flat ground layer tunnel advanced detection can be solved without influencing the tunnel heading work; the device has high working efficiency and high detection accuracy, and is free from safety risks; and accurate positioning of a geometrical anomalous body can be realized.

The invention provides a rock burst prevention method through deep hole blasting and depressurizing. The rock burst prevention method comprises the steps that 1, rock burst monitoring signals are detected in an upper roadway and in a lower roadway of a working face of a coal bed with the risk of rock bursts and are compared with the normal value and the obvious characteristics of rock bursts occurring in adjacent regions, field detection is conducted on the hypocenter location and the drilling quantity of coal bodies, a highly-concentrated stressed zone is divided, and a dangerous zone is delineated; 2, a guide depressurizing roadway is dug along the upper roadway towards the center of the dangerous zone of the rock bursts, blasting and depressurizing holes are drilled in the guide depressurizing roadway in the direction of top plate surrounding rock and bottom plate surrounding rock, after explosives are installed, the blasting and depressurizing holes are sealed through yellow mud, and secure detonation is conducted in the guide depressurizing roadway outside the blasting and depressurizing holes; and 3, after blasting and depressurizing danger relieving is conducted in the dangerous zone of the rock bursts, the depressurizing effect is analyzed and detected, and when the depressurizing effect does not reach the detection standard, secondary danger relieving is conducted through the same method till the depressurizing effect reaches the standard. According to the rock burst prevention method through deep hole blasting and depressurizing, the depressurizing danger relieving effect can be improved, the risk of the rock bursts and the anti-burst cost are reduced, and coal mine safety production is ensured.

A method for evaluating fractures induced in subsurface formations includes determining hypocenters and origin times of induced seismic events from seismic signals detected by seismic sensors deployed above a volume of the subsurface formations to be evaluated and recording the detected signals for a selected time. A modified Gutenberg-Richter exponent is determined for each induced seismic event having at least a selected number of other induced seismic events within a selected radial distance thereof. A spatial distribution of the modified Gutenberg-Richter exponents is used to determine at least one property of the induced fractures.

The invention discloses an automatic height adjusting device based on advanced hypocenter detection of a shearer and applied to the shearer as well as a method. The device comprises a shearer-side signal acquisition device, a working-surface-side signal acquisition device and a height adjusting control module, wherein the shearer-side signal acquisition device acquires hypocenter signals of the shearer and solves absolute position parameters of the shearer under a coordinate system of a mine as well as geographic coordinates of center points of an upper drum and a lower drum of the shearer; the working-surface-side signal acquisition device acquires hypocenter signals, reflected by a wave impedance interface, of the shearer and solves absolute position parameters of a shearer body under an absolute coordinate system of the mine; the height adjusting control module adjusts height of the upper drum and the lower drum of the shearer automatically according to received signals. The automatic height adjusting device is high in precision and good in reliability and economic performance, and conditions are provided for realization of intelligent mining of a working face.

It is an intelligent control compound related electric flash hypocenter device, which comprises the following : high voltage power, parallel storage capacitor base and the control discharging unit , emission array unit electrically connected, low voltage power module supply test unit, control input unit and status display unit, central control unit under control of software program. It is characterized by the following: the storage base comprises low energy capacitor base and high energy storage capacitor base; the emission array unit is of compound array and has sub wave receiving water listening device in the center of the emission unit; the said central control unit sends orders through light fiber to high voltage power module, charging and discharging control module and test unit.

The invention relates to a portable geological anomaly seismic detection system and method. The system includes a seismic signal receiving device which uses a linear movable sensor cascade body formed by a plurality of roller type seismic sensors through a multi-connecting-rod shockproof support. Wave-detector core bodies are arranged in rollers of the roller type seismic sensors. A wireless seismic acquisition base and an external triggering device are installed on the multi-connecting-rod shockproof support. A hypocenter device is arranged beside the multi-connecting-rod shockproof support and is connected to the external triggering device. The wireless seismic acquisition base is respectively connected to the wave-detector core bodies and the external triggering device. The portable geology abnormity seismic detection system and method are suitable for abnormity detection and geological diagnosis within 50 meters of urban underground. Because the wave-detector core bodies are fixed at roller shaft parts, the nondestructive detection is realized under the condition of self weight coupling, which is really different from the wave-detector arrangement in the traditional sense, and the work efficiency is improved.

The invention provides a method and a device of ensuring scalar transverse wave in a three-dimensional earthquake elastic excursion detection wave field. The method comprises a step of a curl calculation of the detection wave field to gain vector transverse wave; a step of calculating a direction of propagation of a hypocenter wave field and the direction of the propagation of the detection wave field; a step of calculating the direction of the propagation of the hypocenter wave field and a vector product of the direction of the propagation of the detection wave field; a step of ensuring a sign of the scalar transverse wave according to the direction of the propagation of the vector transverse wave and the hypocenter wave field and the vector product of the direction of propagation of the detection wave field; a step of gaining the scalar transverse wave according to an absolute value of the vector transverse wave and the sign of the scalar transverse wave. The device can be used for ensuring the scalar transverse wave in the three-dimensional detection wave field and can be applied to imaging of reflecting and converting the transverse wave in the three-dimensional earthquake elastic excursion. A physical significance of imaging result of the transverse wave gained by reflecting and converting through the scalar transverse wave is definite so as to be beneficial for an upper seismic interpretation application in a later period.

The invention discloses an earthquake attenuation estimating method based on changes of a spectrum area. The method comprises the following steps of (1) utilizing a constant phase-position subwave to estimate an actual hypocenter subwave and the parameters of the actual hypocenter subwave; (2) calculating the Fourier spectrum area of the hypocenter subwave; (3) calculating the Fourier spectrum area of an attenuated subwave; (4) calculating the variations of the Fourier spectrum areas of the hypocenter subwave and the attenuated subwave; (5) calculating a relative value, Q, and estimating the attenuation of the earthquake data. The method utilizes the constant phase-position subwave to estimate the hypocenter subwave and obtain the estimated parameters, uses the estimated variations of the Fourier spectrum areas between the hypocenter subwave and the attenuated subwave to calculate and obtain the relative value, Q, and conducts an earthquake attenuation estimation and attenuation reservoir layer depiction. The attenuation estimation of synthetic seismic records with noises and without noises confirms the accuracy and the stability of the earthquake attenuation estimating method. The method can be applied in actual information, and the results of the attenuation estimation can depict a gas reservoir layer well.

A mud gun hypocenter excitation system in the petroleum physical geography exploration includes the floating track swamp buggy chassis, the chassis carriage flat, the down mud gun, the cab, the engine, the air compressor, the gun controller and the floating pontoon. It is characterized in that: the floating track swamp buggy chassis is connected to the chassis carriage flat, which the low is set with the floating pontoon; the cab and engine are set on the chassis carriage flat; the down mud gun is connected to the air compressor; the gun controller is connected with the gun body by the high pressure line. So it does the earthquake excitation work in swamp and water net transition zone.

The objective of the invention is to provide a far-field hypocenter rapid positioning method without pre-measuring speed. A new mathematical model is put forward on the basis of a classic TDOA positioning method. An optimization searching objective function is constructed by the asymptotic line of a hyperbolic curve by using a dimension reduction mode under the condition that wave speed is unknown so that convergence of which the optimal solution can be rapidly stabilized can be obtained, and thus the coordinate position of a hypocenter can be rapidly obtained.

Foreshocks are key to understand the dynamics of earthquake processes, thus, they can lead to short-term earthquake prediction. The method consists the steps of detecting / observing a foreshock clustering / nucleation zone, which grew over a 100 hours period prior to the main-shock occurrence, and studying the deepening of nucleation zone to foresee a hypocenter of a future moderate size reservoir-triggered earthquake at the base of the seismogenic layer

The invention discloses a testing method for determining microquake wave velocity in real time and is applicable to microquake positioning and monitoring of various rock projects including mines, oil and side slopes. By utilizing microquake sensors of a microquake monitoring system and artificial explosion of a given seismic hypocenter, the microquake wave velocity is determined in real time. The testing method includes steps of accurately measuring spatial coordinates of the microquake sensors and the artificial explosion events within a spatial coordinate system of the microquake monitoring system; setting the microquake sensor firstly triggered as a control object when microquake waves monitored by the microquake sensors in the microquake monitoring system are picked up, and inverting the microquake wave velocity in real time by means of the arrival time difference between the other microquake sensors and the first-triggered microquake sensor and the distance difference between the microquake sensors and the artificial explosion hypocenter. In the wake of mining engineering, the testing method can accurately acquire the microquake wave velocity in real time, labor and financial consumption caused by remounting of the microquake sensor is avoided, and the testing method is simple in operation, economic and feasible.

The invention provides a TBM high-pressure pulsed water-jet rock breaking hypocenter advanced detection device and a method thereof. The device comprises a high-pressure pulsed water-jet system, a nozzle, a hypocenter sensor, a supporting device, a receiving sensor, a noise sensor and a data acquisition instrument. High-pressure pulsed water-jet impact rock breaking vibration is taken as a hypocenter; the hypocenter sensor receives a rock breaking vibration signal; the receiving sensor arranged in a three-dimensional full-space manner receives the reflective seismic waves; and the noise sensorreceives noise signals of all noise sources of the TBM. A vibration signal and a reflective seismic wave signal are processed by means of separation, reconstruction, denoising and the like and jet pulse frequency, a longitudinal and transverse wave velocity model and a three-dimensional seismic section are obtained by using a conventional seismic analysis method, and surrounding rock strength index spatial distribution is obtained by fitting analysis, so that advanced prediction of unfavorable geologic bodies and rock properties is realized. The device and the method are scientific in principle, safe, efficient, energy-saving and environment-friendly and have good application prospects.

The invention belongs to a petroleum exploration data processing technology, and in particular relates to a method for calculating a velocity ratio of a longitudinal wave to a transverse wave by using non-zero wellhead distance data. The method comprises the following steps of: acquiring a three-component earthquake record subjected to static correction, performing first arrival pickup, synthesis and reverse convolution, sequentially arranging coordinate parameters of pickup points obtained from an in-phase shaft of up converted waves from shallow to deep, and calculating the velocity ratio of the longitudinal wave to the transverse wave between adjacent shot points and between detection points by acquiring the time when the in-phase shaft is reflected by a wave field of the up converted waves. By the method, the velocity ratio of the longitudinal wave to the transverse wave is calculated by directly using the up PSv wave pickup time of a non-zero wellhead distance without a transverse wave hypocenter; almost all the VSP data of the three-component non-zero wellhead distance are provided with up converted waves and can be obtained more easily than down converted waves; the velocity ratio of the longitudinal wave to the transverse wave has a low requirement on the precision of the time parameters of the up converted waves; and therefore, the method is easy to implement.

The invention relates to a multi-method starting device for collecting seismic data. The invention aims to solve the problem of the prior art that a starting method is single so that the starting is difficult when the seismic data is collected; the key points of the technical scheme are as follows: a muti-method starting device for collecting seismic data comprises an input interface, an output interface and a signal starting module; the signal starting module comprises a starting method selection circuit, a short-circuit and circuit-breakage starting circuit, a buzzer piece starting circuit and a blasting device conversion circuit; input ends of the signal starting module are all electrically connected with the input interface; the output ends of the short-circuit and circuit-breakage starting circuit, the buzzer piece starting circuit and the blasting device conversion circuit are respectively connected with the output interface electrically through the starting method selection circuit; and the control end of the starting method selection circuit is connected with a plurality of toggle switches. According to the multi-method starting device for collecting seismic data, corresponding starting methods for collecting seismic data can be adopted under different hypocenters, the starting is accurate, an effect of starting a trigger signal is good, and the applicability is wide.

The invention relates to an automatic descent control device for a high-pressure gas impact hypocenter. The automatic descent control device comprises an air pressure chamber, an airflow valve, a guide pull rod, an air pressure chamber base, an air pressure chamber bottom cover, an airflow circulation valve block, a valve block baffle and a fixing bracket; the upper end of the air pressure chamber is opened, and the air pressure chamber bottom cover is mounted at the lower end of the air pressure chamber and mounted on the fixing bracket through the air pressure chamber base; the airflow valve is matched and connected in the air pressure chamber, the lower end of the airflow valve is fixedly connected with the guide pull rod, the lower end of the guide pull rod penetrates through a center hole of the air pressure chamber bottom cover and is connected with a hypocenter hammer body, and the guide pull rod is in sealing connection with the center hole of the air pressure chamber bottom cover; and the airflow circulation valve block and the valve block baffle are mounted on the lower end surface of the airflow valve. By means of the automatic descent control device, the time difference produced when the hypocenter hammer body impacts the ground for the first time can be effectively prolonged, so that energy of elastic waves produced when the hypocenter hammer body impacts the ground for the second time can be reduced, and the elastic waves can be prevented from influencing effective recording; and rigid collision of the hypocenter hammer body can be effectively reduced, the fatigue of part materials can be reduced, and the service life of the hypocenter hammer body is prolonged.

This invention discloses a method for identifying microearthquake and blasting events based on hypocenter parameters. The method comprises the following steps: step 1, discriminants of the microearthquake events and the blasting events are acquired; determined N groups of microearthquake event and L groups of the blasting events are used as samples to acquire the discriminants of the microearthquake events and the blasting events as shown in the description; YE and YB are dependent variables of the discriminants of the microearthquake events and the blasting events separately; Xi(i=1,2,...6) is 6 values related to typical hypocenter parameters; Co and Ci are a constant term and an optimal coefficient corresponding to the Xi in the discriminant of the microearthquake events separately; Bo and Bi are the constant term and the optimal coefficient corresponding to the Xi in the discriminant of the blasting events separately; the Co, the Ci, the Bo and the Bi are obtained based on sample identification; both N and L are integers; N and L are not less than 10; step 2, a to-be-identified event is identified; the Xi corresponding to the to-be-identified event is valued and substituted into the discriminants of the microearthquake events and the blasting events to calculate the YE and the YB; if the YE is not less than the YB, the event is a microearthquake event; and if not, the event is a blasting event. The method has the characteristics of strong applicability, high accuracy, and the like.

An embodiment of the application provides a quality control method and device of continuously recorded data. The method includes the following steps: continuously recorded data and hypocenter data areacquired, wherein the continuously recorded data is seismic data acquired by aliasing earthquakes; whether broken arrangement exists in the continuously recorded data is detected; if so, a broken arrangement-affected shot point firing time range and a broken arrangement-affected shot point firing stake number range are determined according to the hypocenter data and the continuously recorded data; and a shot is supplemented or stopped according to the broken arrangement-affected shot point firing time range and the broken arrangement-affected shot point firing stake number range. The solutiontakes specific characteristics of the continuously recorded data into consideration, the broken arrangement in the continuously recorded data is determined first, and then the broken arrangement-affected shot point firing time range and the broken arrangement-affected shot point firing stake number range are determined according to the broken arrangement so as to perform targeted real-time quality control processing according to the data, thus solving the technical problem of effective real-time quality control for continuously recorded data.

A seismic reflection data acquisition method adopts concentric circle equal offset, which is in the engineering geophysical exploration technology field. Specifically the receivers are placed in a way of concentric circle. Choose a compact point on the rock on the tunnel surface; takes the hypocenter as the center and set three concentric survey circles; stimulates seismic waves at the center and receives the reflection wave from the place ahead of the tunnel face by the receivers. A 3D graphics is created based on the positions of the receivers on the tunnel face, by which a 3D geotectonic face is able to be observed clearly through corresponding analysis processing method to receive the information of structures and defective geological bodies ahead.

The invention provides a portable centrifugal internal combustion tamping pick, comprising a rack assembly, an internal combustion engine, a centrifugal vibrating device and a tamping plate, wherein the centrifugal vibrating device comprises driving gears, driven gears, eccentric blocks and a shell; the driving gears are connected with a flexible axle; the driven gears and the driving gears are meshed, arranged horizontally and installed in the space formed by the shell and an end cover; the eccentric blocks with the same overall dimension and quality are symmetrically installed on the driving gears and the driven gears and always keep symmetric in the movement process of the two kinds of gears; and the upper end of the tamping plate is fixed with the shell of the centrifugal vibrating device. The hypocenter of the tamping pick is the centrifugal vibrating force generated by the eccentric blocks, horizontally vibrates the ballasts in multiple directions and can generate enough vibrating force to meet the tamping requirement of the ballasts.

The invention discloses a vibration monitoring apparatus, which includes a bracket, a swing arm and a damped system. The swing arm includes a swing arm ball, a swing arm rod, a counterweight and an extension rod, wherein the swing arm ball is movably connected with the bracket and can rotate random; the swing arm ball is fixedly connected with the upper end of the swing arm rod; the counterweightis arranged at the lower end of the swing arm rod; the lower end of the swing arm rod is connected with the first end of the extension rod, and the second end of the extension rod extends downward orthe first end of the extension rod is connected with the upper end of the swing arm rod and the second end of the extension rod extends upward; the damped system has damped influences on the swing armduring swinging; and the swing arm can swing in any horizontal orientations, the swing amplitude of the swing arm represents the vibration intensity of monitoring positions, and a direction of horizontal component of a swing direction of the swing arm is the direction of the horizontal component of hypocenter direction. The vibration monitoring apparatus is minaturization in shape, low in cost, convenient to operate, and easy to maintain, and can monitor the vibration intensity of the monitoring positions and the direction of the horizontal component of the hypocenter direction.

The embodiment of the invention discloses a monitoring method and system for a controllable hypocenter. The method comprises the steps that aiming at multiple controllable hypocenters in an aim work area, working state information files of each shake frequency of the controllable hypocenters are obtained; according to the working state information files of each shake frequency of the controllable hypocenters, parameter values of a preset monitoring index are obtained; according to threshold values and obtained parameter values of the preset monitoring index, the controllable hypocenters are monitored; the preset monitoring index comprises at least one of the followings: integrity degree of the working state information files, status code, at least one kind of properties of the controllable hypocenters, constraint location, combination center position, and idle time. Overall monitoring for the work state of the controllable hypocenters is achieved.

The invention relates to a high resolution ratio seismic explosive column medicament and a production method thereof, which pertains to the technical field of geological exploration. The seismic explosive column medicament has main ingredients of oversized compost of 40 mesh oversize material single-base propellant, undersized compost of 60 mesh single-base propellant, ammonium nitrate and dibutyl phthalate or dimethyl phthalate or diethyl phthalate. The medicament can control slow release of energy when exploded and reduce explosion velocity of the seismic explosive column; seismic wave excited by the medicament has slow degradation of energy and stronger penetrability, thereby resulting in stronger reflection wave and higher resolution ratio, and being especially suitable for geological exploration of soft stratum.