58 results about "Fault slip" patented technology

The invention relates to the technical field of roadway surrounding rock danger identification, and discloses a roadway surrounding rock danger identification model construction method, which comprises the steps of collecting multi-modal data, and generating preprocessed data through synchronous calibration and denoising; extracting a seismic wave frequency domain and image texture features, and generating a multi-modal feature matrix; in combination with a geological prior clustering mining abnormal mode, generating a labeled sample data set; generating a danger identification model based on a transfer learning and feature fusion training network; and the edge deployment model performs real-time reasoning, and generates an early warning result through an adaptive algorithm. According to the method, the frequency domain features of the seismic fluctuation signals and the depth texture features of the surrounding rock images are fused, the multi-modal feature matrix is constructed, abnormal mode mining is carried out in combination with geological prior knowledge, and early weak abnormal signals such as hidden fault slippage or asymmetric microfracture extension which are difficult to find by a single monitoring means can be effectively recognized.

The invention discloses a fault co-seismic sliding surface inversion method and system based on Beidou and artificial intelligence. The method comprises the steps of collecting Beidou data and seismic waveform data of a target area in real time, and performing preprocessing to extract co-seismic displacement and waveform features; fusing the Beidou deformation features and the seismic wave features to form a multi-modal feature vector; a fault prediction model is constructed based on a graph neural network, forward modeling and historical earthquake example data training are utilized, and multi-modal features are input to obtain preliminary fault sliding distribution prediction; rapid optimization under physical constraint is carried out through the elastic dislocation model, and a final fault sliding model conforming to the geophysical law is obtained; finally, uncertainty quantification is carried out, and a visual product of the dynamic process including sliding distribution, seismic moments and fault deformation is generated. According to the system, full-process automatic processing is achieved through cooperation of all the units, the inversion speed, precision and physical credibility are improved, and reliable support is provided for earthquake emergency response and disaster assessment.

The invention relates to the technical field of hydrofracture simulation experiments, in particular to a true triaxial hydrofracture fault slippage casing deformation monitoring method and system, and the method comprises the steps: preparing a target reservoir simulation sample; arranging and installing a shaft and a sensor; carrying out a water pressure physical model experiment and recording experiment data; and analyzing and processing the experimental data, and performing quantitative evaluation by combining the final state of the target reservoir simulation sample. According to the method, the shear deformation influence of fault slippage on the shaft casing under the true triaxial hydraulic fracturing condition can be quantitatively evaluated; scientific basis is provided for optimization of fracturing optimization design parameters, and engineering practical significance is achieved for optimization of the horizontal well casing damage prevention and control theory and on-site construction design.

The invention discloses a fault slip model smoothing method based on SAR observation data, and the method comprises the steps: firstly, obtaining multi-source observation data (including SAR, GNSS and optical images), and carrying out the joint calculation, and generating a high-resolution earth surface deformation field; the method comprises the following steps: combining a remote sensing image, visually interpreting and drawing a fracture trace, then carrying out data downsampling along an inclination angle direction, and finally constructing an irregular fault geometric model by using a TIN method so as to obtain an initial fault plane model. On this basis, a Laplacian operator suitable for triangular dislocation is defined, a slip inversion model is constructed in combination with an elastic dislocation theory, and a smoothing factor is introduced to balance slip details and calculation efficiency. And finally, optimizing a fault inclination angle and a smoothing factor through a grid search method, evaluating fitting errors and slippage roughness under different combinations, and determining optimal parameters. The final model not only comprises a triangular connection relation, but also provides slip amount distribution and fault dip angle information, and an important basis is provided for seismic activity evaluation and disaster response.

The invention provides a shale reservoir hydraulic fracturing wellbore casing deformation risk judgment method which comprises the steps that geological parameters and principal stress of a target area are obtained, and the principal stress comprises horizontal principal stress, maximum principal stress and vertical principal stress. And determining an included angle between the fault plane and the hydraulic fracture plane according to the normal vector of the fault plane and the normal vector of the hydraulic fracture plane. And calculating by substituting the geological parameters, the principal stress and the included angle into an established stress calculation model of the fault plane to obtain shear stress and normal stress of the fault plane in the target area. And calculating by substituting the shear stress and the normal stress into the established displacement component calculation model to obtain the slip component of the fault plane in the target area. And performing safety early warning based on the risk level. The fault slip amount is calculated by accurately identifying the stratum physical property parameters and the fault structure, so that the casing deformation risk is judged.

The invention discloses a casing deformation and crack slip amount measuring method and a casing deformation adjusting method based on an optical fiber, a DIC and a strain gauge, is applied to the technical field of geological engineering and mechanical monitoring, and aims at the limitation in monitoring fault slip and casing deformation in the prior art. The invention provides a casing deformation and crack slip simulation method based on DIC and strain gauges. Preparing a transparent soil sample by referring to the rock property of the researched stratum, and processing to obtain a standard sample; a standard sample is cut, fault mud is laid on a cutting surface, a strain gauge is arranged near a fault, and an optical fiber sensor on the surface of a sleeve and a DIC technology are combined, so that the deformation behavior of the sleeve in the fault slippage process can be accurately monitored in real time, and the slippage amount, the deformation amount and related mechanical parameters can be obtained. The multi-technology fusion monitoring method provides a high-precision and high-efficiency solution for dynamic monitoring and analysis of mechanical behaviors of the casing, and has important significance for optimizing casing design and improving safety of mining engineering.

The invention discloses an earthquake hazard assessment method and system based on fault inter-earthquake sliding inversion, and relates to the technical field of earthquake assessment, and the method comprises the steps: obtaining a high-resolution surface line-of-sight velocity diagram of a sliding fault in an inter-earthquake period, and obtaining a fault surface trace through the surface line-of-sight velocity diagram; determining a triangular dislocation model of the shallow fault based on the fault surface trace, performing vertical projection on nodes of the shallow fault to obtain a deep rectangular model, and combining the triangular dislocation model and the deep rectangular model to obtain a deep and shallow fault model; carrying out fault slip distribution inversion by combining an InSAR earth surface deformation result with a triangular dislocation model, estimating the slip amount on each dislocation element, and obtaining a seismic moment accumulation rate and a seismic moment; the earthquake repetition time of the fault is obtained through the accumulated earthquake moment and the historical earthquake magnitude, and the earthquake risk of each fault section is evaluated. According to the invention, the seismic moment accumulation rate and the seismic moment are directly obtained, and the accuracy of earthquake risk assessment is improved.

The invention belongs to the technical field of induced earthquakes in hot dry rock exploitation, and provides a hot dry rock development induced earthquake and safety regulation ultra-large physical simulation system which comprises an experimental model, the experimental model comprises a top surface, a bottom surface and side surfaces, and distributed stress loading systems are arranged on the top surface, the bottom surface and the side surfaces of the experimental model; a heating feedback system is arranged between the distributed stress loading system and the bottom surface and the side surface of the experimental model, and an injection well and a production well are formed in the experimental model along opposite angles; the first temperature sensor, the high-temperature-resistant deformation sensor and the high-temperature-resistant fluid pressure sensor are arranged on the prefabricated fault, and the high-temperature-resistant acoustic emission and microseismic sensor is arranged on the boundary of the experimental model, so that the prefabricated fault is comprehensively monitored in the experimental process; the whole-process monitoring of the inoculation process of the induced earthquake caused by injection and production of the hot dry rock, the sliding of the prefabricated fault and the fracture of the bedrock is realized, and the mechanism of the induced earthquake is revealed.

The invention relates to a fault slippage shear casing deformation simulation and evaluation device in a hydraulic fracturing process. The fault slippage shear casing deformation simulation and evaluation device comprises a shaft simulation system, a fluid circulation system, a heating system, a displacement load applying system and a measuring system, the shaft simulation system comprises a sleeve and an outer frame arranged on the periphery of the sleeve, and cement is poured into the outer frame on the periphery of the sleeve to form a simulation stratum; the fluid circulating system comprises a liquid storage tank, pressure regulating valves and a water pump, the liquid storage tank, the water pump and the sleeve are connected through a circulating pipeline, and the pressure regulating valves are arranged at the two ends of the sleeve respectively; the displacement load applying system comprises a fixing mechanism, a moving mechanism and a hydraulic cylinder, and is used for pushing a fault of a simulated stratum to slide along a weak plane so as to apply shear deformation to a sleeve; the measuring system is used for capturing fault slippage parameters and shear deformation parameters of the casing pipe. The monitoring and the evaluation on the shear deformation of the horizontal casing under the stratum caused by various factors in the hydraulic fracturing process are realized in a real working condition environment.

The application discloses a shale oil and gas casing deformation early warning method and device. The method comprises the following steps: determining the microseismic event point risk level of the real-time fracturing well section of the target fracturing operation well according to the microseismic event point data of the target fracturing operation well and the pre-determined microseismic event point risk level standard; determining the construction pressure risk level of the real-time fracturing well section according to the construction pressure data and the construction discharge data of the target fracturing operation well and the pre-determined construction pressure drop early warning standard; determining the natural fracture / fault slip probability according to the risk level of the microseismic event point, the spatial distribution characteristics of the microseismic event point and the risk level of the construction pressure of the real-time fracturing well section of the target fracturing operation well; and issuing the early warning reminder of the casing deformation according to the natural fracture / fault slip probability and the position relationship between the microseismic event point and the wellbore of the real-time fracturing well section. The casing deformation can be effectively early warned to reduce the probability of the casing deformation, and the accuracy and reliability are higher.

The application discloses a kind of quantitative description fault inversion process method based on balanced section, comprising the following steps: S1: selecting geological profile;S2: division different inversion stage sequence stratigraphy;S3: determine the geologic time of different activity stages of inversion fault;S4: use balanced section technology to restore the evolution history of inversion fault;S5-S7: calculate the slip distance of different stages inversion fault, and calculate the slip rate, inversion intensity coefficient of different inversion stages;S8: establish equivalent point distance, total slip distance, slip rate and inversion intensity coefficient trend chart with geologic time variation, the application is suitable for basin structural analysis technical field, introduce balanced section technology, can more accurately restore fault inversion process;Moreover, can clearly, accurately, quantitative characterization fault inversion process from fault slip distance, the activity intensity of different stages and inversion intensity etc., facilitate different inversion structure contrast, basin structural analysis etc. work is carried out.

This invention discloses a method, apparatus, equipment, medium, and product for determining the upper limit of fault bearing capacity. The method includes: acquiring seismic data and establishing a stress field around the fractured well based on the seismic data to obtain the fault stress around the fractured well; acquiring core sample data and establishing a fault slip map based on the core sample data; determining the stress at a target point based on the fault stress around the fractured well, and mapping the stress at the target point onto the fault slip map to obtain the upper limit of bearing capacity corresponding to the target point. This technical solution determines the maximum additional fluid pressure required for fault slippage, enabling pre-fracturing fault slipability evaluation and reducing the risk of casing deformation caused by fault slippage during fracturing.

The present invention provides a method for restoring the slip trajectory of dip-slip faults, including: Step 1, obtaining the structural map of the bottom interface of the target interval, the structural map of the boundary fault plane, and their combined mosaic; Step 2, establishing a profile of the basic interpretation results along the survey line direction; Step 3, obtaining the true dip angle of the fault plane; Step 4, obtaining the spatial position and true length of the fault; Step 5, obtaining the vertical displacement and dip displacement of the fault breakpoint in space; Step 6, obtaining the strike displacement of the fault breakpoint along the fault plane; Step 7, constructing the fault slip trajectory; Step 8, conducting a spatio-temporal displacement difference evaluation. This method for restoring the slip trajectory of dip-slip faults can quantitatively obtain the three-dimensional displacement components of the hanging wall's dip-slip activity along the fault plane, accurately describe the slip trajectory and locate the initial breakpoint position, realize the quantitative characterization of the activity difference characteristics of the spatial target fault, and lay a foundation for the restoration of the prototype basin and its application in oil and gas exploration.

The invention discloses a laser vision and cantilever beam combined type fault slippage real-time monitoring device, which comprises a laser vision monitoring subunit, a first upper sleeve, a first lower sleeve, a high-definition camera and a plurality of positioning laser heads, the coordinate measuring compass is arranged on the first lower sleeve and is provided with a plurality of annular scale marks corresponding to the plurality of positioning laser heads; the cantilever beam strain monitoring subunit comprises a second upper sleeve and a second lower sleeve which are embedded in the upper fault and the lower fault respectively, the fixed end of the cantilever beam is arranged in the second lower sleeve, the free end of the cantilever beam is provided with a connecting assembly, the connecting assembly is slidably connected to the second upper sleeve in an abutting mode, and a strain gauge is arranged in the area, close to the fixed end, of the cantilever beam; and the data processing unit is in signal connection with the high-definition camera and the strain gauges, so that all-directional real-time and accurate monitoring of fault slippage is realized.

The invention relates to the technical field of geotechnical engineering and geological engineering, and discloses a CO2 geological utilization and storage induced earthquake multi-field coupling numerical analysis method, which comprises the following steps of 1, acquiring rock fault geometric characteristic parameters, reservoir geological characteristic parameters, tectonic stress characteristic parameters and construction parameters of a well production point; 2, simulating the CO2 phase change process according to the seepage field, the temperature field, the chemical field and the stress field, constructing a heat-fluid-solid-chemical multi-field coupling mathematical model in the CO2 injection process, including a seepage source confluence item, a thermal field equation, a reaction rate and effective stress, and realizing simulation of the whole fault activation-fracture process under the heat-fluid-solid-chemical multi-field coupling action; the multi-field coupling analysis is more comprehensive; 3, injection-induced fault activation simulation is carried out, and normal stress and shear stress of the fault surface and the fault slip rate are analyzed; and step 4, non-seismic slippage and seismic slippage are evaluated, corresponding seismic moments and induced seismic magnitudes are output, and the seismic nucleation precision is high.

The present application discloses a method for preventing casing deformation, comprising the steps of: determining a target position of a formation where the casing is located and which has a fault slip risk, setting a perforation on the casing corresponding to the target position; extending a formation drilling tool provided with a formation rock crushing tool at the front end from the perforation to the target position; and starting the formation rock crushing tool to crush the rock mass at the target position, so that the formation rock at the target position uniformly loads and extrudes the casing. The present application crushes the larger rocks in the formation around the casing into small rock masses, so that the casing outer surface and the formation rock can be in full contact, and the casing changes from non-uniform loading to uniform loading, thereby prolonging the service life of the casing. The method provided by the present application is simple in operation and low in cost, fills the gap in the prior art in this aspect, greatly improves the well completion quality, effectively reduces the occurrence of downhole accidents, and greatly reduces the production cost of oil and gas wells.

The utility model discloses a combined casing pipe for resisting fault slippage shear failure, which is characterized by comprising an inner casing pipe and an outer casing pipe which are sleeved inside and outside, two ends of the inner casing pipe and the outer casing pipe are respectively connected with an upper joint and a lower joint, a gap is arranged between the inner casing pipe and the outer casing pipe, and foamed aluminum is filled in the gap. Through combined energy absorption of the inner sleeve, the outer sleeve and the foamed aluminum, the external extrusion resistance and the shear resistance of the sleeve are greatly improved, the risk of deformation of the sleeve on site is reduced, and efficient production of oil gas is assisted.

The embodiment of the application provides a casing inner diameter calculation model training method and a method for determining the casing inner diameter, and belongs to the technical field of computers. The casing inner diameter calculation model training method comprises the following steps: acquiring microseismic data and a shear modulus, determining a distance range of fault slip based on the microseismic data and the shear modulus, acquiring a geological parameter variation range of geological engineering parameters and a wellbore parameter variation range of wellbore parameters, determining engineering parameters based on the distance range, the geological parameter variation range and the wellbore parameter variation range, performing numerical simulation according to the engineering parameters to obtain a casing inner diameter result corresponding to the engineering parameters, training a BP neural network model based on the engineering parameters and the casing inner diameter result to obtain a casing inner diameter calculation model. Through the casing inner diameter calculation model, the calculation error is effectively reduced, and the convenience of casing inner diameter calculation is improved.

The present invention provides a method, system, electronic device and storage medium for optimizing the sequence of multi-stage fracturing of shale gas horizontal wells. The method includes performing segmented fracturing on the wellbore of the horizontal well to form multiple fracturing sections perpendicular to the wellbore of the horizontal well; collecting information on multiple horizontal wells that penetrate the same fault in the target shale layer, and dividing the wellbore of the horizontal well penetrated by the fault into a pre-sequence fracturing section, a through-sequence fracturing section and a post-sequence fracturing section; obtaining the section information of the through-sequence fracturing section of each horizontal well; judging whether the through-sequence fracturing section of each horizontal well is located at the same section; selecting the corresponding fracturing method according to the judgment result to sequentially complete the fracturing of the pre-sequence fracturing section, the through-sequence fracturing section and the post-sequence fracturing section of each horizontal well, and performing synchronous fracturing on the through-sequence fracturing section of each horizontal well. The fracturing sequence optimization method of the present invention can effectively reduce the fracturing section loss caused by fault slip in the shale gas horizontal well, and effectively ensure the smooth progress of the multi-stage fracturing construction of the shale gas horizontal well.

The present invention discloses a GNSS aseismic slip signal extraction method based on template matching and linear rate correction, which relates to the field of geodetic surveying and geophysical monitoring technology, including: decomposing the mixed noise in the GNSS / InSAR time series and extracting the denoised residual signal; using masking technology to separate transient and non-transient signal segments, dynamically correcting the linear trend error based on the variance-weighted average rate of the non-transient data before and after the transient segment, and achieving millimeter-level amplitude extraction of transient signals through iterative optimization; constructing an exponential decay and cosine-type transient signal template library, calculating the full sequence cross-correlation by sliding the template along the residual sequence, and accurately identifying the signal amplitude, duration, and spatial distribution. The present invention breaks through the bottleneck of linear rate interference and multi-signal superposition technology, provides high-precision data support for fault slip behavior, aseismic slip identification, and earthquake risk assessment, and significantly enhances the engineering application value of GNSS / InSAR technology in geophysical research and disaster warning.

The invention relates to the related technical field of geological engineering testing, in particular to a single-force-source loading device and method for multidirectional synchronous equal-force testing of rock fault slippage, and the device comprises a base, two vertical arms which are oppositely arranged on the base, and two assembly plates which are movably arranged between the two vertical arms, the two assembling plates can be driven by a power mechanism arranged between the two vertical arms to be close to or away from each other. The pressure heads are respectively arranged on the two assembly plates and are connected with the assembly plates through buffer mechanisms, and when the rock is loaded, the power mechanism drives the two pressure heads to synchronously apply vertical stress to the rock; in the previous stroke of loading, through relative sliding of the assembly cylinder and the vertical rod, the preloading function of the test piece is realized, so that a gap and friction between the test piece and the loading device can be eliminated, the loading uniformity is ensured, the stability and reliability of a loading system are improved, and test errors are reduced.

The invention discloses a coal mine fault stick-slip instability critical stress criterion method based on a speed-state friction law, and the method comprises the steps: building a mining overburden rock mechanical model, combining a fault speed-state friction constitutive equation, quantitatively calculating a dynamic friction coefficient, and then building a fault stick-slip instability critical stress criterion. Advanced and accurate early warning of fault slippage instability is achieved, and the defect that traditional static friction criterion early warning is low in reliability is overcome.

The invention discloses a fault zone intelligent modeling method based on a rock mass drilling RQD value, and belongs to the field of fault modeling, and the method comprises the following steps: S1, obtaining fault detection data through a geological structure comprehensive exploration means, and carrying out fault positioning and parameter acquisition; s2, drilling data features are extracted, and a model is established; s3, rock mass fracture density division is carried out, and a fault fractured zone numerical model is constructed according to a random fracture generation method; s4, constructing a fault fissure zone spatial network, and determining a spatial fissure geometric distribution rule and a permeability rule by combining the obtained function relationship between the data and the RQD; s5, the fault slip plane is processed through the contact pair, a normal contact force corresponding relation is established, and multi-field coupling verification and optimization are carried out; and S6, carrying out integrated modeling on the fault zone. By adopting the method, the numerical analysis model of the fault zone structure is constructed, and the hydraulic characteristic change rule in the fault zone stress conduction process under the mining influence can be conveniently researched.

The invention belongs to the technical field of coal mining simulation tests, and particularly relates to a fault zone tunneling and grouting integrated rock burst simulation test system and method. The test system comprises a triaxial confining pressure loading unit, a modular boundary constraint unit, a data monitoring feedback unit, a roadway tunneling unit and a fault grouting unit. The modularized boundary constraint unit comprises a test cavity which is defined by a first loading plate, a second loading plate, a third loading plate, a fourth loading plate, a first barrier plate and a second barrier plate and is used for accommodating a sample; each of the first loading plate and the second loading plate comprises two segmented plates, and the two segmented plates are connected through an inclined plane; the defect that a traditional test process is split is overcome, integrated continuous simulation from stress loading, fault slippage, tunneling disturbance to grouting reinforcement is achieved, and reliable experimental equipment and theoretical support are provided for deep underground engineering disaster prevention and control.

The present invention relates to a fault slip early warning method and system based on acoustic emission waveform recognition. The method obtains the original acoustic emission waveform generated by the rock, and uses a trained acoustic emission waveform recognition model to predict the probability that the original acoustic emission waveform belongs to each type. A certain type of waveform is extracted, and when at least one of the total value, maximum value, minimum value or differential value of a set parameter X exceeds a threshold, an early warning of the risk of fault slip is issued. When training the acoustic emission waveform recognition model, based on the features in the original acoustic emission waveform, spectral data corresponding to the original acoustic emission waveform is spliced ​​in the layer dimension as input to subsequent layers, and high-order features are output after feature extraction and downsampling. The probability of the original acoustic emission waveform belonging to each type is obtained through classification in a fully connected layer.

The invention relates to an intelligent mountain tunnel gushing water prevention and control system under complex geological conditions, which comprises a coupling sensor module, a detection equipment module, a data transmission module and a central control module, the coupling sensor module is used for acquiring geological physical field data including temperature gradient, fracture opening degree, ground stress, water pressure, fault slip rate and / or pressure wave amplitude; the central control module is used for dynamically identifying a geological scene and an evolution state by receiving geological physical field data from the coupling sensor module, generating a regulation and control instruction based on an identification result, sending the regulation and control instruction to the detection equipment module, and driving the detection equipment module to execute a corresponding detection behavior and an engineering intervention action; the detection equipment module can respond to a regulation and control instruction generated by the central control module and is matched with the coupling sensor module to complete collection and detection of geological physical field evolution data in special scenes of the mountain tunnel, and the special scenes comprise a single scene and a coupling scene.

The invention discloses a fault slip measurement device and method based on an artificial cavern condition, and the device comprises a downhole mechanism, the downhole mechanism comprises a rock stratum, the interior of the rock stratum is provided with a collection well and a measurement well, the interior of the rock stratum is provided with a fault zone, and the collection well and the measurement well are communicated with each other. According to the fault slip measurement device and method based on the artificial cavern condition, optical fiber sensor fault slip measurement and strain gauge sensor fault slip measurement can be carried out, and a plurality of plastic hoses which are in threaded butt joint are matched with a fixed seat and a measurement well to be used in a compatible and combined mode; according to the BOTDA technology based on the stimulated Brillouin scattering amplification effect, the influence of fault slippage on the whole large range of a rock stratum and an acquisition well can be measured through an optical fiber sensor, meanwhile, local strain data can be measured more accurately through a strain gauge sensor, and therefore the accuracy of fault slippage measurement data can be effectively improved, and the measurement accuracy is improved. And fault slip data information can be obtained more comprehensively.

The invention relates to the technical field of test simulation, and provides a simulation test system and a simulation test method for fault slippage. The simulation test system comprises a top loading assembly, a bottom first loading assembly, a bottom bearing assembly, a horizontal first loading assembly and a horizontal second loading assembly, and the above assemblies define a containing cavity used for installing a model sample. The top loading assembly comprises a plurality of independent loading units extending in the horizontal direction, and a preset position of a fault vertex of the model sample is formed between every two preset adjacent loading units; a preset position is taken as a boundary of the top loading assembly, one side is taken as a top first loading assembly corresponding to a dynamic area of the model sample, and the other side is taken as a top second loading assembly corresponding to a static area of the model sample; the connection position of the bottom first loading assembly and the bottom bearing assembly is aligned with the fault bottom point of the model sample; the first horizontal loading assembly and the second horizontal loading assembly apply pressure to the model sample in the opposite directions.

This invention discloses a network monitoring method and system for short-term earthquake precursor information, relating to the interdisciplinary fields of earthquake monitoring and quantum precision measurement. The method includes constructing a three-dimensional evaluation function based on fault slip rate, historical earthquake frequency, and gravity field gradient, dividing the monitoring area into three risk levels from high to low; deploying a three-level monitoring network according to the risk level, including a main monitoring layer, an auxiliary monitoring layer, and a reference layer; acquiring TLF-GV signals from the main and auxiliary monitoring layers, and performing dynamic calibration and component separation through the reference layer; fusing the relative data after calibration of the main and auxiliary layers with the component data of the reference layer using Kalman filtering to generate a TLF-GV signal dataset containing the absolute amplitude of the gravity component, the relative amplitude of the vibration component, and the signal phase; this method, through reference layer calibration and Kalman filtering fusion, significantly improves the signal fidelity provided by subsequent processing.

The invention discloses a networking monitoring method and system for earthquake short-term precursor information, and relates to the technical field of intersection of earthquake monitoring and quantum precision measurement, and the method comprises the steps: constructing a three-dimensional evaluation function based on a fault sliding rate, a historical earthquake frequency and a gravitational field gradient, and dividing a monitoring region into three risk levels from high to low; arranging a three-level monitoring network according to the risk level, wherein the three-level monitoring network comprises a main monitoring layer, an auxiliary monitoring layer and a reference layer; tLF-GV signals of the main monitoring layer and the auxiliary monitoring layer are collected, and dynamic calibration and component separation are carried out through the reference layer; using Kalman filtering to fuse the calibrated relative data of the main and auxiliary layers and the component data of the reference layer, and generating a TLF-GV signal data set containing the gravity component absolute amplitude, the vibration component relative amplitude and the signal phase; according to the method, reference layer calibration and Kalman filtering are fused, so that the fidelity of signals provided by subsequent processing is remarkably improved.