332 results about "Earthquake monitoring" patented technology

A seismic communication system suitable to communicate information to an underground device is disclosed. A seismic source (preferably on or near the surface of the earth) generates a timed series of seismic shots. These shots are then detected by one or more seismic receivers underground. Depending on the timing of these seismic shots, and the communication protocol selected, various information may be communicated to the underground target. Such a system is particularly desirable when the underground device includes a perforating gun because the perforating gun may not only be remotely detonated without the drawbacks of previous methods, but the detonation of the perforating gun charges may also be detected, giving an indication whether substantially fewer than all of the explosive charges detonated. The seismic communication system may also be used, as a component within a multi-functional well seismic system, for seismic reservoir monitoring or seismic monitoring of well operations.

The invention discloses a combination inertial sensor based on a multi-component atom interferometer and a measurement method of the combination inertial sensor, and relates to the technical field of inertial measurement through atom interference. The combination inertial sensor comprises a first inertial-moment-sensitive cold atom interferometer, a second inertial-moment-sensitive cold atom interferometer and a vacuum communication cavity, wherein the first inertial-moment-sensitive cold atom interferometer and the second inertial-moment-sensitive cold atom interferometer are the same in structure. The vacuum communication cavity is communicated with an atom interference area of the first inertial-moment-sensitive cold atom interferometer and an atom interference area of the second inertial-moment-sensitive cold atom interferometer in the horizontal direction. According to the measurement method, multi-frequency laser light is used for simultaneously and independently manipulating two types of alkali metal atoms in the same physical unit, wherein the acceleration and the gravity gradient of one type of alkali metal atoms are measured through a three-pulse pi / 2-pi-pi / 2 Raman laser sequence, and the rotating speed of the other type of alkali metal atoms is measured through a four-pulse pi / 2-pi-pi-pi / 2 Raman laser sequence. Synchronous measurement of a plurality of inertial moments is realized through a simplex physical device at the same time, and the combination inertial sensor based on the multi-component atom interferometer and the measurement method of the combination inertial sensor can play an important role in inertial navigation, resource exploration, earthquake monitoring, physical geographical research and other fields.

The invention discloses an earthquake monitoring device. The device consists of a central control terminal and a sensor probe under ground, wherein, a light pulse signal is generated from a light source part of the central control terminal, transmitted to the underground sensor probe in an deep ground environment over an optical fiber, then the light pulse signal is changed into 3 discrete modulated pulse signals in time domain after being vibrated, strained and temperature-modulated in the probe in the deep ground, and the modulated pulse signals return to an information demodulation section of the central control terminal for photoelectric conversion, amplification, data processing to complete demodulation, thus realizing real-time monitoring and alarming of parameters of vibration, strain and temperature in the deep ground. The device has the advantages of low production cost, simple installation, high accuracy and good practicability, being convenient to form a network of stations, and realizing stereoscopic multiparameter monitoring on the deep ground environment in a large range.

A seismic communication system suitable to communicate information to an underground device is disclosed. A seismic source (preferably on or near the surface of the earth) generates a timed series of seismic shots. These shots are then detected by one or more seismic receivers underground. Depending on the timing of these seismic shots, and the communication protocol selected, various information may be communicated to the underground target. Such a system is particularly desirable when the underground device includes a perforating gun because the perforating gun may not only be remotely detonated without the drawbacks of previous methods, but the detonation of the perforating gun charges may also be detected, giving an indication whether substantially fewer than all of the explosive charges detonated. The seismic communication system may also be used, as a component within a multi-functional well seismic system, for seismic reservoir monitoring or seismic monitoring of well operations.

The invention provides a micro-earthquake focus rapid positioning method based on an arrival time difference database, and belongs to the earthquake focus positioning technology field. The micro-earthquake focus rapid positioning method comprises the steps that a geological numerical model of a monitoring area is established, and mesh division is carried out, and every mesh point is adopted as a characteristic earthquake focus point; by combining with the characteristic earthquake focus point, a sensor position coordinate, and an earthquake focus wave speed, a characteristic earthquake focus point arrival time difference database is established; by using a waveform information acquisition system, the time of the earthquake source waves arriving at different sensors is extracted from waveform signals received from the sensors; the arrival time difference between any two sensors is calculated, and the arrival time difference matrix of the earthquake focus is established, and the matching searching of the arrival time difference matrix and the characteristic earthquake focus point arrival time difference database is carried out to realize the real-time rapid positioning of the earthquake focus. During an actual micro-earthquake monitoring project, the characteristic earthquake focus point arrival time difference database is established in advance, and the function optimization iteration solution of the earthquake focus is not required, and therefore time required by the earthquake focus positioning is greatly reduced, and rock mass engineering dynamic disaster early warning time is effectively reduced.

The invention relates to a mobile-terminal-based real-time earthquake monitoring method and a mobile-terminal-based real-time earthquake monitoring system, and aims to supplement the conventional earthquake monitoring station, improve the density of earthquake monitoring points and solve the problem of earthquake monitoring dead zones. According to the technical scheme, the mobile-terminal-based real-time earthquake monitoring method is characterized by comprising the following steps that 1, a mobile terminal monitors the current shock intensity of an area with the mobile terminal in real time, and transmits a shock event to a server through a network if the shock intensity exceeds a preset threshold value; and 2, the server receives the shock event from the mobile terminal, performs real-time statistical analysis, and calculates a potential earthquake position and relative earthquake intensity.

The invention relates to a seismic monitoring and early warning device, which mainly includes a processor, a sensor module, a signal conditioning module, an A / D (analog to digital) conversion module, a keyboard module, a GPS module, a wireless transmission module, an OLED (organic light emitting diode) display module, a storage module and a power module. The device can monitor the ground motion condition in real time, can quickly figure out basic parameters of the seism when the seism occurs, and is low in production cost, so that the seismic monitoring and early warning device has great theoretical significance and application value.

The invention relates to an earthquake emergency processing method and system for a high speed railway. The method comprises the steps that a railway administration central system receives earthquake alarming information, determines the earthquake alarming information and then releases the earthquake alarming information; an earthquake monitoring pre-alarming station receives the released earthquake alarming information and then controls a traction substation overhead line system in a corresponding area to cut off power; a vehicle-mounted emergency processing device receives the released earthquake alarming information and then controls a train to brake emergently at necessary time according to the earthquake alarming information and the detected overhead line system power off state; a train operation control system receives the released earthquake alarming information, and then controls the operation mode of the train and conducts modulation control to forbid other trains to enter earthquake areas according to the alarming grade of the earthquake alarming information. Through the earthquake emergency processing method and system, the reliability and the timeliness of earthquake emergency treatment are effectively improved.

The invention provides a distributed type earthquake early warning information processing method and system. The method comprises the following steps of: (1) collecting an earthquake motion waveform by earthquake monitoring instruments of various regions, and sending to a local earthquake early warning key information generation instrument; (2) processing received data to generate earthquake early warning key information by the earthquake early warning key information generation instrument, and sending the earthquake early warning key information to an early warning center server to be collected; and (3) calculating an earthquake basic parameter according to the earthquake early warning key information by the early warning center server, and then sending the early warning information which is obtained by a user according to the earthquake basic parameter and is input into the early warning center server to early warning information receiving and disposing equipment to finish earthquake early warning information processing. Because the early warning key information of each station is calculated on the station and is sent to the early warning center server, the distributed type earthquake early warning information processing method has the outstanding advantages that real-time dataflow transmission is greatly reduced, the communication cost is saved, and the data timeliness can be improved due to the reduction of the transmission data amount.

The invention provides a microseism simulating and monitoring method and belongs to the micro-vibration generation and detection field. The method comprises the steps of pressurizing a fracturing fluid and injecting the fracturing fluid into a model to be detected; cracking the inside of the model to be detected by utilization of the fracturing fluid, wherein microseism signals are generated when cracks are produced; detecting the microseism signals via an accelerometer disposed on the surface of the model to be detected and also a laser doppler vibration meter disposed above the surface of the model to be detected and converting the signals into voltage signals; converting the voltage signals into digital signals; and finally storing, calculating and analyzing the digital signals by a computer to obtain information of the cracks. Through the method, microseism signals can be generated indoors through a micro-fracturing way and can be monitored, and water fracturing of field oil and gas wells and a three-dimensional microseism monitoring process can be simulated.

A method for managing a fracturing operation. In one implementation, the method may include positioning a seismic source and at least one seismic receiver near a hydrocarbon reservoir; pumping a fracturing fluid into a well bore of the hydrocarbon reservoir; performing a seismic survey with the seismic source and the at least one seismic receiver during the fracturing operation; and identifying locations of the fracturing fluid within subsurface formations in which the hydrocarbon reservoir is located.

The invention provides a dual-mass-block high sensitivity silicon micro resonant accelerometer structure based on two-level micro-levers. The structure comprises mass blocks, two-level micro-lever amplification mechanisms, and tuning fork resonators. Two mass blocks is employed by an accelerometer to sense acceleration, and the accelerometer is connected to the two mass blocks through connecting the support beam of a substrate and a measured object. One end of each of two completely same resonators is fixed to the substrate through an anchor point, and the other end is connected to the mass blocks through the micro-lever mechanisms. Each mass block is connected to two same two-level micro-levers. When the accelerometer is working, the inertia force generated by mass blocks is amplified by the two-level micro-lever mechanisms and then is acted on the tuning fork resonators, the natural vibration frequency is changed, and through detecting the change of the natural frequencies of the tuning fork resonators, a measured acceleration value can be calculated. The dual-mass-block high sensitivity silicon micro resonant accelerometer structure has the advantages of high sensitivity, a large scale, differential detection, good stability, a small size, a simple structure, and the realization of tuning fork vibration coupling suppression, and the structure can be used in the field of aerospace and aviation, automotive, and earthquake monitoring.

The invention relates to the field of earthquake monitoring and early warning, in particular to a novel earthquake early warning method having advantages of on-site early warning and front-detection early warning. By the method, the problems that the position of earthquake epicenter cannot be pre-estimated by the conventional on-site earthquake early warning method and an early warning dead zone exists in the conventional front-detection earthquake early warning method can be solved. The method is implemented on the basis of a front-detection monitoring and early warning network and a plurality of on-site early warning monitors Bj. The method comprises the following steps of: interacting monitoring information; determining and executing early warning; and defining a range and executing the early warning. The method has the advantages of the front-detection early warning and the on-site early warning, so the early warning dead zone within a range covered by the front-detection earthquake monitoring and early warning network is eliminated effectively, and early warning signals can be provided in a meizoseismal area; furthermore, favorable early warning measures are provided for earthquake protection of important monitoring areas within a monitoring range, and the requirement of people such as unceasing enterprise on the earthquake natural disaster reduction science and technology can be met.

The invention discloses a micro-earthquake monitoring system and method, comprising the following steps: collecting the micro-earthquake measurement data to be transmitted to an initial wave distinguishing unit, acquiring the waveform signal by the initial wave distinguishing unit in which the signal to noise ratio of the waveform signal is greater than the specified threshold, encapsulating and compressing the date of the waveform signal, transmitting the compressed data to the master station, acquiring the waveform signal via compressing and decoding the data, and processing the wave signal. The technical scheme of the invention not only reduces the micro-earthquake measurement data to be transmitted, improves the efficiency of transmission, reduces the collection cost, but also effectively restores the waveform data due to the data encapsulation and recombinant technology; at the same time, the whole beautifulness of the monitoring area is not destroyed, the installation is simple,the operation is simple and convenient, the network organization is flexible, the expansibility is good, the comprehensive cost is low; and the micro-earthquake monitoring system and method is particularly applicable to the field data collection.

The invention relates to an early warning method for a regional earthquake monitoring net, which solves the technical problem that a lot of inconvenience is brought to lives of people due to the fact that the unnecessary panics of residents are caused because of mistake report, false report and missing report which are caused by low accuracy of earthquake monitoring and analyzing of the regional earthquake monitoring net. In the technical measure adopted by the invention, the early warning method for the regional earthquake monitoring net is realized on the basis of a set of sub monitoring stations with earthquake monitors, a master control center arranged at the regional center and provided with assorted management software and a regional earthquake monitoring net system formed by means of a topology network. The early warning method for the regional earthquake monitoring net has the beneficial effect that the accuracy of earthquake information is judged through a double-layer threshold comparison method, thereby, valuable time is strived for the escape of people, and simultaneously, the inconvenience brought to the lives of people because of false report is also avoided.

The invention discloses a real-time monitoring system and method for mine earthquake, and belongs to the technical field of mine earthquake monitoring. The system comprises 40 monitoring stations, 40 large-power outdoor routers, a wireless WiFi relay / switcher, an Ethernet / China Mobile 4G network, a data processing server, and terminal equipment. One monitoring station is correspondingly connected with one large-power outdoor router, and each large-power outdoor router is connected to the input end of the data processing server through the wireless WiFi relay / switcher and the Ethernet / China Mobile 4G network. The output end of the data processing server is connected to the input end of the terminal equipment. The output end of the terminal equipment is connected with the output ends of the 40 monitoring stations through the Ethernet / China Mobile 4G network, the wireless WiFi relay / switcher and the 40 large-power outdoor routers. The system is convenient to install, is flexible in monitoring range, is high in positioning precision, is good in monitoring effect, is low in cost, and is good in prospect of application in the fields of coal mine dynamic disaster monitoring and early warning.

The invention discloses a single station earthquake P wave detection warning device and relates to seismological observation technology. The single station earthquake P wave detection warning device comprises a data acquisition module, a data analysis and logging module and a communication and alarm module, wherein the data acquisition module, the data analysis and logging module and the communication and alarm module are connected in sequence. The data acquisition module is composed of three-axial force balance acceleration sensor and an external connection acceleration sensor interface. The data analysis and logging module is composed of a analog-digital (AD) convertor, a digital signal processor (DSP), an advanced RISC machine (ARM) and system thereof, a global position system (GPRS) module, a P wave early warning algorithm, a real-time clock and a secure digital (SD) card storage. The communication and alarm module is composed of a computer, an alarm box and a P wave early warning instrument application software. The single station earthquake P wave detection warning device has the functions of acquisition, storage, analysis and alarm. Earthquake monitoring and earthquake P wave early warning are achieved only a single device is needed. The single station earthquake P wave detection warning device has the advantages of being small in size, light, easy to carry, convenient to install, low in cost and suitable for network layout of an earthquake early warning project and a national earthquake early warning science research project for a key project.

The invention discloses a wireless network-based earthquake monitoring system. The system comprises earthquake monitoring devices, earthquake monitoring substations, a control center, positioning devices, ARM plates and satellite positioning and timing devices, wherein the earthquake monitoring devices are respectively arranged at different earthquake monitoring points to monitor the crustal shock of corresponding earthquake monitoring points; the earthquake monitoring substations receive data of the earthquake monitoring devices and transmit the data to an earthquake monitoring master station through a 3G wireless network; the control center analyzes and processes the data received by the earthquake monitoring master station; the earthquake monitoring devices are connected with the positioning devices; displacement sensors are arranged in the positioning devices; the positioning devices are used for monitoring the crustal shock; the substations are communicated with the master station through the 3G wireless communication network; and the ARM plates and the satellite positioning and timing devices are arranged in the earthquake monitoring devices. The displacement sensors in the horizontal and vertical directions are arranged at the monitoring points and accurately sense the crustal shock in the horizontal and vertical directions; the GPS positioning and timing devices are used for positioning and timing; the monitored accurate earthquake information is sent to the control center through the 3G wireless network; the earthquake information is accurately and timely transmitted without the limitation of transmission media; and the earthquake monitoring devices are powered by solar power supply equipment without the limitation of electrical infrastructures and can be connected with video acquisition devices, computers, faxes and / or telephones and transmit related data to a data center through the 3G wireless network.

The application describes methods and apparatus for seismic monitoring using fiber optic distributed acoustic sensing (DAS). The method involves interrogating a first optical fiber (102) deployed in an area of interest to provide a distributed acoustic sensor comprising a plurality of longitudinal sensing portions of fiber and also monitoring at least one geophone (107) deployed in the area of interest. The signal from the at least one geophone is analyzed to detect an event of interest (105). If an event of interest is detected the data from the distributed acoustic sensor acquired during said event of interest is recorded. The geophone may be co-located with part of the sensing fiber and in some embodiments may be integrated (307) with the sensing fiber.

The invention discloses an earthquake monitoring and pre-warning device and a working method thereof, and relates to an earthquake monitoring and pre-warning technology. The earthquake monitoring and pre-warning device is mainly characterized by comprising seismic signal acquisition units, seismic signal monitoring units, a seismic signal processing unit and a client, wherein (two or more) seismic signal monitoring units are used for judging whether to send seismic alarm signals, each seismic signal monitoring unit is connected with two or more seismic signal acquisition units, the seismic signal monitoring units are connected with the same seismic signal processing unit, and the seismic signal processing unit is also connected with the client through a signal. The earthquake monitoring and pre-warning device has the characteristics of high pre-warning reliability and good timeliness, and is mainly used for the earthquake monitoring and pre-warning of a railway system.

A monitoring data processing method for earthquake prediction, an earthquake prediction method and a system, relates to the field of disaster early warning. By arranging earthquake monitoring points in a pre-monitoring area, various physical quantities and chemical quantities of the earthquake monitoring points are monitored, and multi-component monitoring data is acquired. The multi-component monitoring data is associated with change characteristics of physical and chemical fields at the earthquake monitoring points caused by underground activities. The multi-component monitoring data is processed to obtain characteristic changes of the multi-component monitoring data. The characteristic changes are then input into a tree model, and an earthquake risk index of the earthquake monitoring point or the pre-monitoring area is output. The multi-component monitoring data of the earthquake monitoring points in the pre-monitoring area is processed by innovative proposing the tree model application, so that all-weather monitoring and real-time updating of the data of the earthquake is realized, and early warning can be timely issued on the danger of earthquake occurrence by analyzing the data.

The invention discloses a method for detecting the stability of a roadway group surrounding rock by utilizing blasting operation vibration waves. The method comprises the following steps: taking blasting earthquake waves of roadways under construction as detection signal sources; distributing a blasting earthquake monitoring instrument in each constructed roadway; utilizing a distance and a time difference of two adjacent measuring points to obtain transmission apparent velocities of each earthquake wave among the adjacent measuring points of a roadway surrounding rock to be detected; calculating quality factors of rock bodies of the adjacent measuring points by utilizing predominant frequencies of the different measuring points; judging the quality of the surrounding rock by utilizing the change of the apparent velocities and the quality factors. According to the method disclosed by the invention, a concept of an earthquake exploration technology is used for reference and blasting direct waves which have strongest energy and are most easily recognized are sufficiently utilized, the direct waves are recorded, and the treatment on the aspects of time and frequency is carried out; the change of a time domain and a frequency domain index is utilized to realize the back analysis of the state of the roadway group surrounding rock.

The invention relates to a smart phone with an earthquake early warning function and an early warning method thereof. The smart phone comprises a cell phone body which is provided with a control mainboard, an electronic compass connected with the control mainboard and used for detecting geomagnetism, a three-axis gyroscope for detecting seismic wave, a capacitance screen earth electricity sensor for detecting earth electricity, a communication module, an early warning countdown device for early-warning left time before an earth quake, a cell phone capacitance screen and an alarming device for transmitting alarming signals. The electronic compass, the three-axis gyroscope and the capacitance screen earth electricity sensor are arranged on a cell phone simultaneously, accuracy of earthquake early warning is improved, and early warning false alarm rate of the earthquake can be reduced. The communication module can be networked with an earthquake monitoring department through an internet to further confirm earthquake information, and the accuracy of the earthquake information is improved. The communication module has a function of locating a current cell phone position and further confirms a current earthquake place.

The present invention relates to a high speed rail earthquake pre-warning and emergency disposal system which is mainly used for monitoring earthquake sport situation and response of high speed rail tramroad and relevant building structure, providing earthquake information to rail operation personnel, and processing emergency dispose when earthquake take places. The system utilizes a plurality of earthquake monitoring points located on various parts, such as along high speed rail tramroad line and bridge, tunnel structure. When once detecting earthquake for endangering rail operation safety, the system can adopt some emergency dispose measures, such as alarm, reducing speed and packing, for avoiding and reducing damage caused by earthquake, and ensuring operation sureness of the train. The system records a whole data in process of earthquake, can analyze and evaluate structure safety of rail facility, and provide basis for high speed rail operation decision.

The invention discloses a wired network-based earthquake real-time monitoring method, and belongs to the field of earthquake monitoring. The method comprises the following steps of: 1, dividing an area which needs to be monitored into a plurality of small squares and installing displacement sensing subsystems and monitoring centers to which power is supplied by solar power supply equipment at four corners of each small square; 2, positioning and providing synchronous clock signals for the displacement sensing subsystems and the monitoring centers by using global positioning system (GPS) positioning and a time service system and sending signals to start the operation of each monitoring center by a control center when monitoring; and 3, transmitting acquired data to the control center through an Internet network system by the displacement sensing subsystems. The method can accurately and rapidly monitor a large area in real time when earthquake occurs.

The invention discloses a bored grouting slurry spatial diffusion range and path description method, and relates to the technical field of a coal mining area bored grouting slurry diffusion range monitoring method. The method concretely comprises the following steps that a micro-earthquake monitoring system is constructed around a bored grouting area by utilizing an underground tunnel; artificial grouting is performed on a target aquifer through boring, and a micro-earthquake event is induced; grouting pressure, slurry concentration and slurry composition are adjusted, and the micro-earthquake event spatial distribution situation formed by slurry diffusion of different stages is observed; and the law of micro-earthquake event spatial distribution is analyzed, and full-space, real-time and continuous description of the slurry diffusion range, path and process is performed. With application of the method, the grouting slurry diffusion range, path and process can be accurately determined, and working area aquifer water storage structures and underground water flow field characteristics and other information can be provided so that the basis can be provided for grouting project optimization, grouting effect evaluation, rapid treatment of the water inrush accident and water resource protection.

The invention relates to a rock burst and mine earthquake real-time monitoring system and a method. The rock burst and mine earthquake real-time monitoring system comprises a rock burst monitoring system and a mine earthquake monitoring system which are arranged underground, wherein the two monitoring systems commonly share an underground power supply, an underground monitoring host and a switch. The rock burst monitoring system comprises a junction box and a pressure sensor, wherein one end of the junction box is connected with the pressure sensor, and the other end of the junction box is connected with the underground power supply through a pressure signal wire and a sensor power supply line. The mine earthquake monitoring system consists of a geophone which is connected with the underground power supply through a vibration signal line and a geophone power supply line; the underground monitoring host and the switch can keep the monitoring of the rock burst and the monitoring of the mine earthquake synchronously, and signals collected by the geophone and the pressure sensor can be transmitted to ground equipment through the underground monitoring host and the switch. The rock burst and mine earthquake real-time monitoring system realizes the synchronous real-time monitoring of the rock burst and the mine earthquake, and has wide application prospects in the fields of coal mine dynamic disaster monitoring and early warning.

The invention belongs to the technical field of cluster node monitoring, and provides an earthquake industry cluster equipment active monitoring system and a polling mechanism. The system comprises a central monitoring system and a cluster. The cluster comprises multiple cluster nodes. Each cluster node is connected with the central monitoring system via a communication link. The cluster nodes in the cluster are divided into two queues, and the polling sequence of each node in the queues is dynamical allocated step by step according to priority; a dynamic queue priority threshold value is set; each node of the static queue has equal status; in one polling period, polling is performed by the central monitoring system according to node priority, and node priority is reduced after polling; polling of the static queue is performed if polling is completed; and if one time polling of the dynamic queue is not completed within polling time, polling directly ends. Earthquake monitoring waveform and other information are ensured to be accurately and timely acquired when an earthquake comes so that earthquake disaster influence can be reduced to the largest extent, and communication link guarantee can be provided to earthquake monitoring data transmission.

The invention discloses a seismic magnitude rapid estimation method based on deep learning feature fusion. The method comprises the following steps: (1) collecting a large number of seismic monitoringstation ground vibration waveform records and corresponding seismic catalogues; (2) calculating traditional parameter characteristics and statistical characteristics of a data sample; (3) training adepth model, and extracting image features and time sequence features in the data sample; and (4) fusing the features extracted from the data sample to form vector representation, training an XGBoostmodel to obtain a seismic magnitude rapid estimation model, and further utilizing the model to obtain a corresponding seismic magnitude according to seismic waveform record estimation. Research results of traditional seismology are utilized, and are combined with deep learning, a seismic magnitude rapid estimation model is learned by utilizing a large amount of seismic data, and the accuracy of seismic magnitude rapid estimation is improved.