102 results about "Earthquake hazard" patented technology

The invention relates to a single-pass full-polarization interferometric synthetic aperture radar (SAR) which combines a polarization technology and an interferometric technology. The single-pass full-polarization interferometric SAR comprises a dual-polarization active phased-array antenna, a receiving sub-machine, a calibration and acquisition sub-machine, a monitoring sub-machine, a distribution sub-machine and a recorder. By adoption of the single-pass full-polarization interferometric SAR, the polarization interferometric SAR data of eight channels can be simultaneously obtained, and a three-dimensional topographic map of a target scene can be obtained through interferometry. The obtained polarization interferometric SAR data can be applied to vegetation parameter inversion in forestry and agriculture and can be also applied to detection of surface deformation in an earthquake disaster and large-area three-dimensional topographic mapping.

A passive damper for earthquake hazard reduction includes an inner member received in an outer member, with an elastomeric material disposed in the gaps between the inner and outer member. The elastomeric material has at least a first and a second portion. The first portion is bonded or connected to both the inner member and outer member such that no slippage occurs between the members and the material. The second portion is not bonded or connected to at least one of the inner and outer members such that slippage may occur.

The invention discloses a dissipative element of a grouting sleeve, comprising an inner tube and an outer tube which are arranged coaxially. The slit between the lap sections of the outer tube and the inner tube is provided with expanding cement slurry, and an expanding cement sheath is formed after the expanding cement slurry is cured. The pretension force of the expanding cement slurry enables the friction force of the contact surface between the expanding cement sheath and the sleeve body to be increased. At normal operating condition, the dissipative element can be used as ordinary support to bear axial loading; with the effect of earthquake loading, the dissipative element consumes and absorbs the earthquake energy by relative sliding of inner and outer tubes. The member has no too high requirement for machining precision, thereby saving steel material and having low cost. After the dissipative element is damaged and inactive in earthquake hazard, the dissipative element of a grouting sleeve is just needed to be replaced and the operation is very convenient.

The invention discloses an earthquake disaster loss prediction and evaluation method and system based on a Softmax regression model. The invention relates to the technical field of earthquake disasterloss prediction and evaluation. The problem of how to improve the precision and training speed of earthquake disaster loss prediction is solved. The method comprises the steps of: serving different earthquake disaster loss degree levels as classification labels of a Softmax regression classification model, selecting past earthquake disaster feature data for training, wherein the Softmax regression classification model is used for predicting past earthquake disaster loss; inputting new earthquake disaster feature data and classification labels into the Softmax regression classification model;judging that the input data belongs to the classification weight of each earthquake disaster loss degree level; determining a classification label corresponding to the input data according to the classification weight so as to determine the loss degree grade of the new earthquake disaster. Compared with a BP (Back Propagation) neural network and an SVM (Support Vector Machine), the method and thesystem provided by the invention have the advantages that the capability of distinguishing the earthquake disaster loss is stronger, the test precision is high, and the test time is short.

The invention discloses a theory of durable three-dimensional energy dissipation shock absorption and shock insulation base for a large sized vertical type liquid storage tank, a structural method thereof and a structure thereof. The base takes a reinforced concrete rotary thin shell with ring beams as a shock insulation and bearing structure, a sand bedding layer thickly laid under the rotary thin shell as a bearing and energy dissipation shock absorption structure, and an underlayer as a concrete precast slab protective layer and a earthwork synthetic material impermeable layer. The engineering construction method is briefly introduced here. The liquid storage tank which is good in rigidity as well as flexibility can resist a destructive 10-magnitude earthquake, the service life is as long as 70 to 100 years, but for other disasters such as earthquake downfall, bad slip, collapse and debris flow, etc., additional protective measurements need to be taken.

For providing earthquake data for a defined area, stored are locations of a plurality of earthquake epicenters and seismic parameters associated with a plurality of seismic zones. The seismic parameters are indicative at least of magnitude and likelihood of earthquakes in each of the seismic zones. A location of a selected epicenter, within the defined area, is determined (S31) from the stored locations. Determined from the seismic parameters is a selected magnitude (S34) associated with a selected seismic zone comprising the selected epicenter. Established are characteristics of a plurality of earthquake events (S3) in the area over a defined length of time. The characteristics of an earthquake event include at least a selected epicenter and a selected magnitude. Generated is a signal indicative of the characteristics of the earthquake events. Enabled is an easy to maintain earthquake hazard model, having flexible and simple parameterization, and providing earthquake data consistent with historical data.

The invention provides an earthquake monitoring and early-warning system and method. The earthquake monitoring and early-warning system is arranged in a monitored deformation area and a stable area. An active fault surface is arranged between the deformation area and the stable area. The system comprises a plurality of constant-resistance large-deformation anchor cables and force monitoring devices. The constant-resistance large-deformation anchor cables are installed in the deformation area and the stable area and penetrate through the active fault surface. The force monitoring devices are arranged on the constant-resistance large-deformation anchor cables so as to monitor the forces acted on the constant-resistance large-deformation anchor cables by the active fault surface. According to the invention, the constant-resistance large-deformation anchor cables penetrate through the active fault surface, the earthquake force acted on the active fault surface is reflected by the constant-resistance large-deformation anchor cables, the magnitude and the change of the acting force are measured by the force monitoring devices, and the scientificity and the reliability of earthquake disaster monitoring and early-warning are substantially improved.

The invention provides an orthotropic dielectric fluid factor and fracture parameter inversion method. The method comprises the following steps: deducing a rigidity matrix of an ortho-symmetric anisotropic fracture medium by using a vertical transverse isotropic medium under a dry rock background according to fracture weakness; with utilization of hypotheses of weak anisotropy and small fracture weakness, deducing a new expression of weak anisotropy approximate rigidity of a saturated fluid rock in an orthogonal medium by combining an anisotropy Gassmann equation; acquiring a PP wave linearized reflection coefficient for fluid and fracture parameter decoupling in the orthogonally symmetrical weak anisotropic medium by combining stiffness disturbance and scattering theories; and with logging information as prior information, realizing elastic impedance pre-stack inversion changing with offset and azimuth angle by using a partial incident angle stacked by azimuth seismic data under Bayesian framework. According to the invention, Reliable results can be provided for fluid identification and fracture characterization; and technical supports are provided for seismic wave propagation research, oil and gas development and seismic disaster prevention.

The invention provides a slope geological disaster early warning system. The early warning system acquires deformation monitoring information through the slope deformation monitoring device; meteorological early warning information is received through a meteorological monitoring device; a seismic wave intensity map and a maximum seismic wave acceleration value are obtained through an earthquake disaster monitoring device; and landslide alarm, meteorological alarm and earthquake alarm are carried out through the disaster early warning center according to the deformation monitoring information,the meteorological early warning information, the seismic wave intensity map and the maximum seismic wave acceleration value. According to the invention, deformation quantity information, meteorological information and seismic wave information related to slope geological disasters are comprehensively considered, a slope geological disaster early warning system platform is constructed, slope geological disaster early warning is carried out, and comprehensive and effective slope geological disaster early warning is realized. And the auxiliary rescue device is arranged to assist personnel in evacuation and send position information and scene information to the rescue command center, so that a basis is provided for rescue of the rescue command center, the rescue efficiency is improved, and theloss of geological disasters is reduced.

The invention discloses an earthquake disaster risk assessment and countermeasure analysis system. The system starts from five aspects of earthquake disaster risk investigation management, earthquakedisaster risk assessment, earthquake disaster loss pre-assessment, earthquake disaster risk treatment auxiliary decision and earthquake disaster risk assessment public service. The whole process frominvestigation, evaluation to governance of the earthquake disaster risk is covered, and a scientific technical platform is provided for improving the earthquake disaster risk evaluation and governancecapacity. The formation of a key technical system for earthquake disaster risk prevention in China is effectively promoted, and a scientific and technological application technology for reducing earthquake disaster risks is promoted. Scientific basis can be provided for government to carry out earthquake disaster risk prevention and control and the like, and the earthquake disaster risk prevention capacity is effectively improved, so normal disaster reduction is achieved, and the earthquake disaster risk is effectively reduced. Important engineering such as national energy development strategies, economic development strategies and the like, social and economic development and life and property safety of people are guaranteed, and important actual quakeproof and disaster reduction significance is achieved.

The invention relates to a method utilizing a horizontal interlayer between foundations to avoid destructive effect on building upper structure from earthquake horizontal waves. The method includes designing one or more than one rafts between foundations, designing one or more horizontal separating layer (sand-gravel cushion) smooth surface (slabs with different upper and lower materials and minimum friction index) between the rafts, thereby eliminating and avoiding transmission of earthquake horizontal waves from up to down and from foundation to foundation after the upper and lower structure of the foundations are separated, and then maintaining safety and stability of upper structure of buildings. Passive resistance from the upper main structure is changed to positively eliminate source from lower foundations. Energy from earthquake horizontal waves can be freely released from horizontal layers between foundations, and safety and stability of the upper building main structure can be maintained when the foundations release earthquake energy. The method is a major breakthrough for high layer buildings to resist earthquake disaster, is low in cost, feasible and convenient, and good in earthquake effect.

The invention discloses a system and method for responding earthquake disaster of rail transit. The system comprises a switchboard a arranged on a control center, one or more working stations, one or more server sets, one or more switchboards b, one or more serial servers and one or more seismic detectors, wherein the switchboards b, the serial servers and the seismic detectors are arranged in a subway control chamber; the control center is interconnected with the subway control chamber through a communication system; the working stations are connected with the server sets through the switchboards a, the server sets comprise communication servers, database servers and application servers, which are interconnected with the switchboards a; and each switchboard b is respectively connected with the seismic detectors and the serial servers, and the serial servers are connected with the seismic detectors. According to the invention, earthquake disaster of a subway and a light railway is monitored in real time and is immediately accurately alarmed, accurate data support is provided for the subway and the light railway for responding the disaster, a responding mode or automatic responding treatment of manual decision are realized, the functions of plan prompting, reserving and the like are achieved; and normal works of other parts can not be influenced when local faults occur.

The invention relates to the field of engineering site earthquake effect evaluation, in particular to an engineering site earthquake hazard analysis method considering the effect of potential earthquake source orientations, which comprises the following steps: step 1, defining an engineering site earthquake affected zone; step 2, defining a potential earthquake source; step 3, establishing a site earthquake effect analysis framework; step 4, establishing an earthquake annual incidence rate matrix; step 5, establishing an earthquake effect intensity matrix; step 6, determining the exceeding rate of earthquake effect intensity in different orientations; step 7, calculating the exceeding probability of the earthquake effect intensity in the different orientations. The engineering site earthquake hazard analysis method has the benefits that the effect of the potential earthquake source orientations on an engineering site earthquake is fully considered, the deviation between an earthquake hazard analysis result and an actual earthquake effect is reduced, and the requirement of engineering anti-earthquake for the analysis of an earthquake damage way is met.

The invention relates to a construction method and an application method of an offline earthquake disaster loss evaluation system. The construction method comprises the steps of obtaining basic data;wherein the basic data comprises basic geographic data and earthquake professional element data; processing and sorting the basic data to generate offline map data; generating earthquake loss pre-evaluation result data of each kilometer grid under different intensities by utilizing the earthquake loss evaluation model; performing block storage on the earthquake loss pre-evaluation result data of each kilometer grid under different intensities; superposing the stored earthquake loss pre-evaluation result data of each kilometer grid under different intensities with the offline map data to obtaina drawing expression of a loss result; based on object-oriented programming and a graphic image processing technology, constructing and developing an interactive interface and an interactive operation function, and obtaining the offline earthquake disaster loss evaluation system. According to the invention, the efficiency and stability of earthquake disaster loss assessment can be improved.

The invention relates to earthquake disaster processing, and discloses an earthquake area landslide susceptibility evaluation method. The method comprises the following steps: 1, obtaining an earthquake landslide catalogue according to the difference between earthquake area pre-earthquake information and earthquake post-earthquake information; (2) selecting a landslide sample from the landslide catalogue, based on the landslide sample, adopting a single-class support vector machine model to obtain an initial earthquake landslide susceptibility index, normalizing the initial earthquake landslide susceptibility index into a probability index, and partitioning the landslide according to the probability index; (3) selecting non-landslide samples from the first landslide first easy-to-occur area and the first landslide second easy-to-occur area, and constructing a sample data set; and (4) based on the sample data set, obtaining landslide susceptibility indexes of the seismic region throughtwo support vector machine models, and partitioning the landslide by adopting a natural breakpoint method. The evaluation method can rapidly and accurately realize landslide easy-to-occur evaluation of the earthquake disaster area so as to provide a guidance basis for subsequent disaster emergency rescue, disaster monitoring and land planning.

The invention relates to an urban earthquake disaster risk assessment method and system. The method comprises the following steps: S1, obtaining a relation model among disaster-causing factors, disaster-bearing bodies and action forms based on disaster events; s2, obtaining an analysis model of a disaster event action process based on the relation model; s3, based on the analysis model, obtainingan evaluation matrix, and predicting the risk of the target; according to the method, the analysis model is obtained through the relationship among the disaster-causing factors, the disaster-bearing body and the action form, and the disaster size is judged according to the analysis model and the evaluation matrix, so that the urban safety guarantee capability and the disaster emergency capabilitycan be effectively improved.

The invention relates to an earthquake disaster risk assessment method, and discloses a Newmark correction model earthquake landslide risk assessment method, which comprises the following steps of (1) collecting geological topography information, earthquake information and geological environment information; (2) obtaining the critical acceleration acN of the rock mass according to the geological topography information, and judging the influence weight of geological factors in the information obtained in the step (1) on the landslide by utilizing an analytic hierarchy process model; (3) correcting the critical acceleration acN of the rock mass according to the influence weight of each geological factor on the landslide, and recording the corrected critical acceleration as acM; and (4) combining the seismic oscillation peak acceleration PGA and the corrected critical acceleration acM in the geological and topographic information, and utilizing a Newmark displacement model to solve the cumulative displacement of the rock mass so as to evaluate the risk of seismic landslide according to the cumulative displacement of the rock mass. According to the Newmark correction model earthquake landslide risk assessment method, the earthquake landslide risk can be rapidly and accurately assessed.

The invention provides a cloud model urban earthquake hazard risk assessment method and device and a storage device. The method comprises the steps of determining an urban earthquake hazard risk indicator factor system; layering the urban earthquake hazard risk indicator factor system; constructing a judgment matrix for urban earthquake hazard risk indicator factors belonging to the same layer; building a cloud model for each element of the judgment matrix; calculating a weight cloud model by using the cloud models of the elements; building a membership cloud model through a reverse cloud generator by using historical sample data of the earthquake as cloud droplets; constructing a relationship matrix by using the hazard indicator factors and the corresponding membership cloud model; and performing fuzzy synthesis by using the relationship matrix and the weight cloud model to obtain an assessment cloud model. The cloud model urban earthquake hazard risk assessment device and the storage device are used for implementing the cloud model urban earthquake hazard risk assessment method. According to the invention, the urban earthquake hazard grade can be assessed more visually and more accurately.

The invention provides a fabricated wallboard structure system. The system comprises a foundation, prefabricated wallboards and prestressed tendons, wherein the prefabricated wallboards are arranged on the foundation; the prestressed tendons connect the prefabricated wallboards and the foundation into a whole. The system is characterized in that at least two prefabricated wallboards are connected and positioned by horizontal seam connecting pieces in the vertical direction and are connected and positioned by vertical seam connecting pieces in the horizontal direction. The system not only is convenient to install and has high assembly efficiency but also has the effects of reducing damages of earthquake action to transverse seam and vertical seam connection nodes of adjacent wallboards in the case of earthquake disasters or under other exogenic actions and improving the shock resistance of the wallboards or other corresponding safety factors.

The invention relates to the technical field of synchronous grouting. The invention relates to a rubber particle anti-seismic synchronous grouting material. The synchronous grouting material is prepared from the following raw materials in parts by weight: 70 to 90 parts of cement, 595 to 685 parts of aggregate, 350 to 450 parts of water, 200 to 300 parts of fly ash, 80 to 110 parts of special soiland 10 to 12 parts of additive, wherein the aggregate is rubber particles or a mixture of the rubber particles and sand. The synchronous grouting material disclosed by the invention is low in elasticity modulus, can effectively fill gaps of duct pieces, plays due waterproof and anti-settling roles during tunnel construction, and can effectively absorb energy and provide buffer for the duct pieceswhen earthquake disasters happen, thereby playing a shockproof and anti-seismic role.

The invention discloses a rescuing system used in an earthquake relief site. The rescuing system comprises a user device, a signal transfer system and a disaster area rear-area decision-making command system, wherein information of the user device is transmitted to the disaster area rear-area decision-making command system through the signal transfer system, a sensor performs detection, and user vital sign data is obtained and is sent to a cloud-side in a network or wireless mode, the wireless information of a user is forwarded to the cloud-side through a wireless transfer device, and the user data is analyzed on the cloud-side. When an earthquake disaster occurs, a rescue plan is scientifically formulated according to the data sent by the user, and rapid and accurate rescue is performed according to the specific user rescue information. The rescuing system is simple in structure and operation, capable of achieving real-time transmission and low cost, good in usage effect and convenient to popularize and use. In addition, the large the number of users, more accurate the disaster situation judgment is.

The invention relates to an earthquake disaster risk assessment method, and discloses an earthquake region landslide susceptibility assessment method based on multi-modal classification, which comprises the following steps: (1) collecting and preprocessing landslide disaster-causing factor characteristic data, and combining related landslide disaster-causing factor characteristic data according to the intrinsic attribute difference of the landslide disaster-causing factor characteristic data to obtain a landslide risk assessment result; and obtaining different types of landslide disaster-causing factor modal data; (2) obtaining similarity graphs of various landslide disaster-causing factor modal data by adopting a random forest principle; (3) fusing similarity graphs of the various landslide disaster-causing factor modal data by adopting a nonlinear fusion method so as to generate a similarity fusion graph; and (4) obtaining a landslide sensitivity graph through a related classification algorithm on the basis of the similarity fusion graph so as to evaluate the earthquake region landslide susceptibility. According to the earthquake region landslide susceptibility evaluation method based on multi-modal classification, earthquake landslide risk evaluation can be rapidly and accurately realized.

The invention discloses a dissipative element of a grouting sleeve, comprising an inner tube and an outer tube which are arranged coaxially. The slit between the lap sections of the outer tube and the inner tube is provided with expanding cement slurry, and an expanding cement sheath is formed after the expanding cement slurry is cured. The pretension force of the expanding cement slurry enables the friction force of the contact surface between the expanding cement sheath and the sleeve body to be increased. At normal operating condition, the dissipative element can be used as ordinary support to bear axial loading; with the effect of earthquake loading, the dissipative element consumes and absorbs the earthquake energy by relative sliding of inner and outer tubes. The member has no too high requirement for machining precision, thereby saving steel material and having low cost. After the dissipative element is damaged and inactive in earthquake hazard, the dissipative element of a grouting sleeve is just needed to be replaced and the operation is very convenient.

The invention relates to an SMA-GFRP (Styrene Maleic Anhydride-Glassfiber Reinforced Plastics) hyperelastic composite bar and a manufacturing method thereof. The manufacturing method of the SMA-GFRP hyperelastic composite bar comprises the following specific steps: a, placing extremely-fine SMA filaments which are 24 percent in volume percentage and are 0.5mm in diameters and 44 percent of GFRP tows in parallel or annularly, and curing a flexible vinyl ester resin matrix between two kinds of fibers through a pultrusion process, wherein the volume percentage of the flexible vinyl ester resin matrix is 32 percent, and a section is a circle being the same as a steel bar through molding of the pultrusion process; b, deforming the surface of the SMA-GFRP bar or performing sand burning treatment on the surface to enhance anchoring between the SMA-GFRP and concrete. The SMA-GFRP hyperelastic composite bar has high ductility and corrosion resistance, and the problem of limited use of the GFRP bar in an anti-earthquake structure is solved; when the SMA-GFRP composite bar is applied to a plastic hinging area, the anti-earthquake performance of a structure is enhanced, residual displacement accumulation after continuous earthquakes is reduced, and the integral performance of the structure after continuous earthquakes is improved.

The invention discloses an electrical interconnection system toughness evaluation and improvement method considering earthquake uncertainty, and the method comprises the steps: carrying out the combination enumeration of an earthquake source position and an earthquake magnitude gear, and obtaining the probability of each potential earthquake scene according to an earthquake disaster probability model; then, obtaining intensity distribution of different earthquake scenes through the intensity attenuation model, and solving the element failure probability based on the intensity according to a pre-built electrical interconnection system; applying an electrical interconnection system load reduction optimization algorithm based on a two-stage gas network optimization power flow model to solve the load reduction amount in each order fault state; calculating a toughness index according to the probability of each potential earthquake scene, the element failure probability and the load reduction amount in each order of fault state, if the system-level toughness index is lower than a set standard value, determining that the planning scheme reaches the standard, and otherwise, determining that a toughness improvement strategy needs to be implemented; and obtaining a plurality of alternative schemes according to the element-level toughness index, and formulating an element strengthening scheme through cost-benefit analysis, so as to correct the planning scheme.

The invention discloses a virtual earthquake disaster scene optimization method based on an earthquake rescue virtual drilling system. The method comprises the following steps: 1, a primary model is established; 2, according to the primary model, a macroscopic disaster area model, a search area model and a work site model are established with three layers of different detail degrees, the models with the different detail degrees correspond to different drilling tasks, and the earthquake rescue virtual drilling system comprises an earthquake rescue drilling scene setting subsystem; an earthquake rescue drilling analogue simulation subsystem; and an earthquake rescue drilling performance evaluation subsystem; the step 1 comprises the steps of according to an earthquake occurrence principle, establishing an earthquake motion model and simulation; building a building damage model and simulation according to the intensity and a building anti-seismic structure principle; according to an emergency behavior principle, establishing a disaster victim behavior model and simulation; establishing a secondary disaster model and simulation according to the earthquake secondary disaster theory; and establishing a department collaborative rescue model and simulation according to the actual earthquake rescue emergency plan.

The invention relates to an earthquake disaster information service method and system based on knowledge graph semantic matching. The method comprises the following steps: constructing an earthquake disaster prevention and control corpus; constructing an earthquake disaster prevention and control knowledge graph according to the earthquake disaster prevention and control corpus; semantically matching the answer information corresponding to the content input by the user from the earthquake disaster prevention and control knowledge graph according to the content input by the user, the earthquake disaster prevention and control corpus is firstly constructed, the pertinence is higher than that of a general corpus, and then the earthquake disaster prevention and control knowledge graph is constructed according to the earthquake disaster prevention and control corpus, semantically matching answer information corresponding to content input by a user from an earthquake disaster prevention and control knowledge graph, establishing semantic association among information through the knowledge graph on the basis of semantic matching, and establishing information matching between the user input content and an entity in the earthquake disaster prevention and control knowledge graph according to the user input content so as to obtain the answer information. The problem that the difference between the user retrieval intention and the information service provided by the system is too large is solved.

The invention disclose a width detector for the cracks and the fractures of the houses after an earthquake which comprises a digital camera, a zoom lens, a lengthened drawtube and a standard graduation plate; wherein, the lengthened drawtube consists of a body, a power, a power box, a switch, a small lamp and a lead and has a simple structure. When in use, the lengthened drawtube is provided with a lighting power and can directly shoot images in time and obtain the image data. The lengthened drawtube is applicable for detecting the width of the cracks and the fractures of the houses after an earthquake in particular.

The invention belongs to the technical field of Internet of Things, and relates to an Application method of earthquake disaster early warning information to IoT equipment, which comprises the following implementation steps of: after the IoT equipment with a processor accesses the network for the first time, obtaining own geographical location information; establishing information connection between the IoT server and the disaster server, and the IoT equipment executing disaster information analysis and calculation tasks at the highest priority; the IoT device calculating the distance S between the seismic source and the IoT device; the IoT device calculating the time when the seismic wave arrives at the position of the IoT device; the IoT device calculating the remaining time when the earthquake actually arrives at the position of the IoT device, and the IoT device executing the set earthquake early warning information prompt rule; expanding an earthquake prediction information broadcasting channel, the reaching range of the earthquake prediction information being enlarged, accurate broadcasting content striving for disaster avoidance time, and voice broadcasting being suitable for special crowds. The device is reasonable in design, easy to use, convenient to popularize and environment-friendly in application.