59 results about "Earthquake risk" patented technology

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 seismic isolation control method having anti-girder-falling and anti-collision functions and a seismic isolation control structure, belonging to the field of the seismic isolation technology for bridges. According to the invention, measurement devices positioned between a main girder I and a bridge pier and a main girder II and the bridge pier are utilized respectively to acquire data in real time and transmit the data to a control module; the control module is used for analyzing and judging the lap-jointing status of the main girder I and the bridge pier and the main girder II and the bridge pier, and the distance status and the lap-jointing length variation tendency of the main girder I and the main girder II in real time in combination with the acquired data, and is used for adjusting the input voltages of damping devices between the main girder I and the bridge pier and between the main girder II and the bridge pier respectively, so as to control the movements of the main girder I and the main girder II relative to the bridge pier according to the lap-jointing status of the main girder I and the bridge pier and the main girder II and the bridge pier, and the distance status and the lap-jointing status variation tendency of the main girder I and the main girder II. The method can prevent a collision between the falling girder and the adjoined main girder, and can comprehensively improve the earthquake risk resisting ability of the bridge structure.

The invention provides a monitoring data processing method for earthquake forecasting, an earthquake forecasting method and a system thereof, wherein the methods and the system relate to the field ofdisaster early warning. Through arranging an earthquake precursor monitoring point in a pre-monitoring area, the change characteristics of a surface physical field and a chemical field at the earthquake precursor monitoring point caused by internal earth activities are monitored, and furthermore measurement data which are related with the change characteristics of the surface physical field and the chemical field caused by the internal earth activities are obtained. Statistics are performed on the measurement data, and earthquake forecasting is performed on the pre-monitoring area is performedaccording to a statistics result. Because monitoring to the change characteristics of the surface physical field and the chemical field caused by internal activity of the earth is novely presented, all-weather monitoring to the earthquake and real-time data updating are realized. Through data analysis, early warning can be generated for an earthquake risk. Therefore the people in an earthquake area can perform risk avoiding measures in advance, thereby reducing causality and property loss of wide population.

The invention discloses a multi-well combined artificial heat storage construction system based on hot dry rock and a construction method. A new idea for artificial heat storage construction based onhot dry rock is provided, a well group effect on multi-well combined reservoir construction can be realized with a multi-well combined construction method as a core through integration of hydraulic fracturing, chemical stimulation and other means, communication distance between an injection well and a mining well in dry hot rock development is effectively increased, effective volume and heat exchange area of artificial heat storage are increased, long-term and low-pump-volume shear fracturing and chemical stimulation on multiple wells are continued, pumping pressure and scale are small, stressrelease process is slow, and earthquake risk can be effectively reduced; with adoption of the method, large-scale effective artificial heat storage construction for hot dry rock is realized, economicbenefit of the hot dry rock development is increased, and therefore, the requirement of commercial development is met.

The present invention discloses a bridge seismic risk probability analysis method based on performance design. The method comprises: (1) establishing a seismic vulnerability function according to an IDA method and a section (as shown in the specification) analysis method; (2) according to a seismic risk probability analysis method, establishing a seismic hazard function at the bridge site; (3) establishing a seismic risk probability function in the design reference period according to the obtained seismic vulnerability function and the seismic hazard function; and (4) according to the design theory of the seismic risk probability function and seismic performance, perform performance analysis on the bridge. According to the seismic risk probability analysis method based on performance design provided by the present invention, whether the bridge structure satisfies objectives of each level of seismic performance based on performance design can be determined in a probabilistic manner, thevulnerable damage position of the bridge structure under the seismic action can be further determined, and the method has certain guiding significance to seismic loss assessment and maintenance operation management of bridges.

The invention relates to an anti-seismic technology analysis method, in particular to a performance seismic oscillation risk analysis method based on a three-layer data set neural network. The methodcomprises the following steps of: (1) performing seismic oscillation data acquisition and data noise removal; (2) performing data characteristic parameter extraction and initialization processing; (3)generating a training set, an interval set and a test set ; (4) training a multi-layer neural network based on the training set; (5) training a neural network output value based on the interval set,and calculating a mean value and a standard deviation of the relative errors of the output value; (6) training the neural network based on the test set to determine an output value, and calculating amagnitude interval based on interval confidence; (7) performing probabilistic earthquake risk analysis, and determining the annual transcendental probability and recurrence period of a performance earthquake; and (8) based on performance seismic oscillation and consistency probability, determining the magnitude and epicenter distance of performance seismic oscillation. And a new neural network training method is adopted to predict a seismic oscillation attenuation relationship, so that the universality and toughness of the attenuation relationship are improved.

The invention provides a method and a system for realizing visualization of an aftershock fault structure. Acquired aftershock point cloud data is converted into a three-dimensional view point cloud,and the three-dimensional view point cloud is projected to a plane perpendicular to a fault to obtain a two-dimensional plane projection image; a plurality of points with linear features in the two-dimensional plane projection image are selected out, a fault plane is fitted out according to the selected points with the linear features, and the fault structure is positioned according to the fittedfault plane; and the positioned fault structure is input into a three-dimensional view to obtain a visual image of the three-dimensional fault. According to the method and the system provided by the invention, the aftershock point cloud data is converted into the visual image, so that the fault structure of an earthquake can be accurately presented, the space-time process of aftershocks can be reproduced, and technical support is provided for research personnel in earthquake mechanism recognition and earthquake risk assessment.

The invention relates to the field of tunnel risks, and provides a shield tunnel risk assessment method considering uncertainty of an earthquake vulnerability model. The method comprises the followingsteps: (1) determining various earthquake vulnerability models FC1, FC2 to FCn of tunnels in the same type; (2) establishing a vulnerability model FC0 considering uncertainty; (3) selecting a certainearthquake intensity PGA; (4) setting a sampling frequency N, and sampling the vulnerability model FC0 in the step (2) to obtain N groups of discrete probabilities P0, P1, P2 and P3 of different damage states; (5) obtaining N groups of average expected losses lsm1 according to the step (4); (6) calculating the average expected loss lsm2 of each quantile; (7) repeating the steps (3)-(6) to obtainthe average expected loss lsm of different PGAs; and (8) obtaining a risk index R value based on the result of the step (7). The scheme provided by the invention has the beneficial effects that errorscaused by a single model can be reduced, different vulnerability curve models are comprehensively considered, and the tunnel earthquake risk is analyzed more reasonably.

The invention discloses a transformer substation or converter station coupling loop earthquake risk assessment method. The method comprises the steps that calculating the station site earthquake riskprobability of a transformer substation or a converter station; establishing a failure model of the equipment of the transformer substation or the converter station under the coupling effect, and obtaining the failure probability of the equipment under the coupling effect under the earthquake condition; establishing a disaster loss model of the equipment in an earthquake to obtain economic loss ofequipment failure in the earthquake; and obtaining an earthquake risk, wherein the earthquake risk = station location earthquake risk probability * failure probability of the equipment under the coupling effect * disaster economic loss. The method not only considers the failure probability of a single device, but also considers the failure mode and the failure probability of a connection bus, andtakes the influence of large displacement on the electrical performance of the device under the earthquake action as an influence factor of the risk, and a coupling loop failure model is provided onthe basis so as to form a coupling loop earthquake risk index.

The invention provides an earthquake monitoring early-warning system and an earthquake monitoring early-warning method. The system comprises an Internet of Things constellation, a ground center, a ground terminal and an earthquake monitoring early-warning platform, wherein the Internet of Things constellation consists of a plurality of Internet of Things satellites; the ground terminal is used foracquiring crustal movement data detected by an earthquake monitoring device and used for transmitting acquired data to the Internet of Things satellites; the Internet of Things satellites are used for receiving data transmitted from the ground terminal, used for storing data, and used for transmitting data to the ground center when being moved above the ground center; the ground center is used for receiving data transmitted from the Internet of Things satellites, used for analyzing and processing the data, and used for transmitting the data to the earthquake monitoring early-warning platform;the earthquake monitoring early-warning platform is used for receiving the data, and used for judging an earthquake risk and / or implementing earthquake magnitude prediction on the basis of the data and prestored earthquake criterions. By adopting the system and the method provided by the invention, data acquisition and transmission are carried out through the Internet of Things constellation, remote-distance real-time monitoring and early warning of earthquake can be achieved, and active effects that ground network covering and operator guard are not needed are achieved.

The invention discloses a method for establishing a pulse seismic oscillation response model taking a mountain terrain effect into consideration. A near-fault area tends to generate strong pulse seismic oscillation, and the mountain terrain can cause obvious amplification effect on pulse earthquake. According to the method, by comparing the acceleration spectrums of a trapezoid mountain model anda free field model under the action of pulse seismic oscillation, the obvious amplification effect of mountain terrains on pulse seismic oscillation is verified. Therefore, when the mountainous area is subjected to near-fault region earthquake risk evaluation, the amplification effect of mountain terrain on pulse seismic oscillation needs to be considered, so that pre-seismic disaster prevention and evaluation, earthquake-time emergency response and post-earthquake reconstruction planning can be realized in a manner of being closer to the actual situations.

The invention is suitable for the technical field of regional earthquake risk assessment, and provides a highway bridge earthquake vulnerability analysis method and device and terminal device.The method comprises the steps that a bridge failure probability model is determined according to a bridge structure and earthquake vibration characteristics; establishing a bridge fine finite element model and performing nonlinear dynamic time-history analysis on the bridge fine finite element model to obtain a linear relationship between the seismic oscillation intensity index and the seismic demand of the seismic related component; calculating a bridge failure probability according to the linear relation and a bridge failure probability model; an artificial neural network is adopted to learn the incidence relation between the bridge structure and the bridge failure probability and between the seismic oscillation characteristics and the bridge failure probability, a plurality of highway bridge seismic vulnerability models are obtained, the highway bridge seismic vulnerability models are trained, and a highway bridge seismic vulnerability optimal model is obtained. And determining the earthquake vulnerability of the highway bridge based on the highway bridge earthquake vulnerability optimal model. According to the invention, the earthquake vulnerability of the highway bridge can be rapidly and accurately obtained.

The invention relates to a Mindlin solution-based earthquake ground surface fracture permanent displacement estimation method. The method comprises the following steps of 1, determining a potential source of an area where an active fault is located and the maximum magnitude Mu of the potential source in combination with data; 2, setting the magnitude and epicentral distance of the earthquake by adopting a maximum probability method; 3, fault model parameters are determined; and 4, on the basis of the determined fault model parameters, establishing a finite seismic source model based on a Mindlin solution, and applying the finite seismic source model to seismic surface permanent displacement estimation. According to the method, a fault model and potential source region parameters of a Chinese fourth-generation seismic zoning map are fully utilized, an earthquake risk analysis method is combined, a Mindlin solution is applied to estimation of the seismic surface permanent displacement, and a seismic surface permanent displacement field near a seismic fault is subjected to numerical simulation.

The invention provides a nuclear power plant earthquake response early warning device and a building method therefor. The nuclear power plant earthquake response early warning device comprises an earthquake instrument monitoring system which is arranged in a nuclear power plant and used for inputting earthquake intensity and frequency data, earthquake risk interval data and weight data to an earthquake motion risk data table to generate an earthquake motion risk database, and a list output module which is used for outputting a list of primary risk equipment and buildings with shock resistance lower than the earthquake intensity according to the earthquake intensity and frequency data in the earthquake motion risk database and shock resistance mid-value data in a vulnerability degree database. The nuclear power plant earthquake response early warning device and the building method therefor have the advantages of ingenious technique and high practicality.

The invention discloses an earthquake safety evaluation and calculation device. The device is characterized by comprising an earthquake risk calculation module, an earthquake motion synthesis module,a site calculation-1D module and a site calculation-2D module, wherein the earthquake risk calculation module comprises five parts including basic parameters, latent source parameters, an earthquake motion model, earthquake risk calculation and result input, the seismic oscillation synthesis module comprises five parts including control parameters, a target spectrum, initial seismic oscillation, seismic oscillation synthesis and result output, and the site calculation-1D module and the site calculation-2D module each comprise a calculation model part, an input ground vibration part, a calculation part and a result output part.

The invention discloses an earthquake risk analysis method for an underground structure of a subway station, and the method comprises the steps: deducing a structural earthquake demand risk probability analytic function and an earthquake damage risk probability analytic function which comprehensively consider essential uncertainty and cognitive uncertainty from the perspective of uncertainty transmission; according to the method, the essential uncertainty of seismic oscillation, structural material size and the like can be considered, the cognitive uncertainty of seismic risk, numerical approximation, model simplification and the like is comprehensively considered, and the limitation of singly considering the cognitive uncertainty of the seismic vulnerability function in traditional analysis is avoided, so that a more accurate seismic risk assessment result can be obtained.

The invention provides a body-based building earthquake risk assessment method. The method comprises the steps of setting basic data; defining a plurality of classes corresponding to a body model, defining individuals corresponding to the plurality of classes and attributes corresponding to the classes according to use functions of a building, with the attributes including relationships among theplurality of classes and data corresponding to the individuals contained in the plurality of classes; formulating semantic network rules according to the multiple classes, wherein the semantic networkrules comprise semantic network rule names, operating the body model according to the semantic network rules, and acquiring building earthquake risk assessment parameters; and taking anti-seismic reinforcement measures for the building according to the building seismic risk assessment parameters. Abody of the invention can combine a plurality of target fields to establish a unified knowledge base, and obtain obvious and implicit information of related entity classes through logical relationships among the fields and preset semantic rules, so that related personnel can quickly obtain target information, and the body has great significance for guiding earthquake prevention and disaster reduction work.

The invention belongs to the technical field of quakeproofness and particularly relates to an earthquake risk avoiding bed mainly comprising a bed body, a drawer, ventilation openings, a motor, a storage battery, a chain transmission device, a cabinet, a signal transmitter, air filter devices, a spring, a spring pin, a bracket, a control switch and an LED (Light Emitting Diode) lamp. The earthquake risk avoiding bed is characterized in that the drawer, the motor, the storage battery and the chain transmission device form a drawer transmission mechanism; a mattress, a bed board, the bracket, the spring and the spring pin form a bed board mechanism; the drawer transmission mechanism is arranged below the bed board mechanism and integrated with the bed body; the front and the rear of the bed body are respectively provided with the ventilation openings and the air filter devices; and flexible package is adopted in the bed body, and the LED lamp, the cabinet and a new generation satellite positioner are arranged in the bed body. Due to the adoption of a drawer type human entering mechanism, the way that a human body enters the bed body is optimized, and the bed body is attractive, rapid in reaction, strong in seismic capacity at the obverse side, high in safety and capable of playing an overall protection role for the human body.

The invention relates to a method for modifying the aseismic importance coefficient of a bridge, which mainly considers four evaluation indexes, including an evaluation index R1 considering earthquakevulnerability, an evaluation index R2 considering earthquake risk, an evaluation index R3 considering bridge series connection and an evaluation index R4 considering road parallel connection. The seismic importance correction coefficient R is obtained by multiplying four evaluation indexes, R = R 1 * R 2 * R 3 * R 4. The modified seismic importance coefficient is obtained by multiplying the original seismic importance coefficient by the seismic importance correction coefficient R. The technical scheme of the invention can greatly improve the economy of the bridge design in the dense area of the road network, and has important practical significance.

The invention discloses a transformer substation main transformer earthquake risk assessment method and system, and the method comprises the steps: carrying out the experiment of a to-be-assessed maintransformer under different earthquake intensities based on a preset earthquake loss index system according to different performance level requirements; judging the obtained experimental result and safety critical values under different earthquake intensity and performance level requirements to obtain a vulnerable probability; and evaluating the risk of the main transformer based on the vulnerability probability. According to the method, the anti-seismic level is divided into three indexes, the range of each anti-seismic performance index corresponding to each index is provided, and comprehensive and accurate risk assessment is carried out on multiple components of the main transformer in an earthquake prone area.

The invention relates to the field of mine earthquake risk assessment in a coal mining process, in particular to a method for assessing mine earthquake risk caused by overlying strata key layer fracture in the coal mining process, which comprises the following steps of: calculating theoretical fracture step pitch and released energy of a key layer; evaluating whether the key layer can be broken or not; the mine earthquake intensity caused by key layer fracture is evaluated; evaluating the potential influence of mine earthquakes on the earth surface; and evaluating the potential influence of the mine earthquake on the underground. According to the method, a technical means for scientifically evaluating the mine earthquake risk is provided for a mine, the mine earthquake risk source and the risk level can be effectively identified, then mine earthquake disaster prevention and control measures are formulated in a targeted mode, the mine earthquake risk is reduced to the maximum extent, rock burst disasters induced by mine earthquakes are weakened or even eliminated, and safe production of the mine is guaranteed.

The invention relates to the technical field of earthquake risk assessment, particularly provides a power grid facility anti-seismic safety risk assessment method and device, and aims to solve the technical problem of how to integrally and comprehensively know the specific influence range and intensity distribution of a certain earthquake event and the relevant information of an earthquake source position. The method comprising the steps of analyzing seismic intensity of a position where a power grid facility is located during an earthquake; calculating safety coefficients of all the power grid facilities within an earthquake influence range based on the seismic intensity of the positions of the power grid facilities; and carrying out risk assessment on all the power grid facilities in the earthquake influence range based on the safety coefficients of all the power grid facilities in the earthquake influence range. According to the technical scheme provided by the invention, the overall influence range and intensity distribution of the earthquake can be displayed through a map, the complete information of the earthquake can be displayed, further, the earthquake influence degree of the electric power facility can be matched through a map matching mode, and the facility does not need to have monitoring point monitoring data.

The invention relates to a base isolation-tuned mass damper shock isolation and vibration absorption device for a nuclear power plant without earthquake risk. The base isolation-tuned mass damper shock isolation and vibration absorption device is characterized by comprising a base shock isolation base structure and a tuned mass damper structure. The tuned mass damper structure is of a shell structure with a circular cross section, and includes a tuned mass damper main structure and a tuned mass damper substructure. The main structure and the substructure are connected by at least two tuned mass damper support units, and the substructure is located above the main structure. Each of the tuned mass damper support units is composed of support stiffness and support damping, and is sealed by a flexible sealing device. The tuned mass damper main structure is connected with the base shock isolation base structure through at least two base shock isolation support units, and each of the base isolation support units is composed of support stiffness and support damping. The base isolation-tuned mass damper shock isolation and vibration absorption device for the nuclear power plant without earthquake risk is good in seismic robustness and stable in shock absorption effect, and has no special requirements of a site, implementation of the device is simple, and the anti-seismic safety of the structure of the nuclear power plant is greatly improved.