214 results about "Soil mechanics" patented technology

The invention discloses a deep learning-based intelligent identification method and system for rock and soil mechanical parameters, and aims to accurately identify the elastic modulus, strength parameter and permeability coefficient of rock and soil and support the decision and design of engineering projects under complex geological conditions. And starting from data demand analysis, determining a parameter identification target and planning a field test layout. A basic data set is constructed by comprehensively collecting and integrating multi-source data including laboratory and field test data, remote sensing information and the like. The data is pre-processed and analyzed to remove noise and explore associations between the data. The method comprises the following core steps: constructing a rock-soil mechanical model by using a deep learning algorithm, and realizing high-precision inversion of parameters by defining and optimizing an objective function. And verifying an inversion result and carrying out uncertainty analysis. According to the method, an analysis result is fed back to engineering design adjustment and decision support, and scheme optimization is achieved. The model and strategy are dynamically adjusted through continuous monitoring and real-time data, and safety and high efficiency of engineering implementation are guaranteed.

The invention relates to the technical field of underground engineering and geotechnical mechanics, and provides a marine facies soft soil tunnel construction disturbance induced surrounding rock energy dissipation grading evaluation method which comprises the following steps: step 1, establishing a marine facies soft soil energy dissipation constitutive model based on thermodynamics; 2, determining mechanical parameters of the constitutive model; 3, establishing a tunnel construction mechanical model, embedding the constitutive model in the step 1 and the mechanical parameters in the step 2 into the tunnel construction mechanical model, and outputting an energy subitem output quantity in real time; step 4, establishing a damage unit identification system; 5, arranging a monitoring system to obtain monitoring data and feeding the monitoring data back to the numerical model for verification; and step 6, performing graded early warning according to the closeness degree of the structural unit to the instability failure energy threshold value. According to the scheme, a surrounding rock damage grading system is constructed through an energetic perspective, rapid risk identification is realized in combination with multi-source monitoring data, and a new theoretical and engineering means is provided for safe construction of the marine soft soil tunnel.

The invention discloses a low-carbon stability conjoint analysis method and system for underground engineering, and particularly relates to the technical field of engineering modeling optimization, and the method comprises the steps: obtaining rock-soil mechanical parameters, construction parameters and full-life-cycle carbon emission factor data of a target area; dividing a collaborative optimization region based on parameter fusion and identifying a conflict section; constructing a mechanical stability numerical model and a carbon emission quantitative model, outputting double indexes, and generating a double-target optimization decision space through dynamic weight distribution; traversing and screening candidate schemes meeting a safety threshold and carbon emission constraints, and extracting an anti-interference Pareto solution set in combination with geological sensitivity simulation; a low-carbon-stability balance scheme is generated through reverse coupling verification, and full-life-cycle low-carbon stability optimization support is provided for complex geological engineering.

The invention discloses a weak intercalated layer control-based closed conduit-slope system optimization layout method, which comprises the following steps of S1, geological survey and parameter acquisition: accurately positioning a weak intercalated layer through a geological radar and drilling coring, and determining a rock-soil body strength parameter by combining a laboratory rock-soil mechanical test, geological radar data and rock-soil body strength parameters are analyzed through a random forest algorithm, and the interlayer space distribution rule is predicted. By combining geological survey, numerical simulation, intelligent optimization and dynamic monitoring technologies, scientific layout and adjustment of a closed conduit-side slope system are realized, a weak intercalated layer seepage path is accurately cut off, the safety coefficient of the side slope is effectively improved, meanwhile, expansion of a plastic zone is effectively inhibited, settlement of an overlying soil body or large-range deformation of the side slope is reduced, and the stability of the side slope is improved. The seepage stability and the stress slow release capacity of the system are enhanced, the safety of the water diversion project in a complex geological area is improved, and an operable technical path and basis can be provided for layout of similar projects in the future.

The invention relates to the technical field of geotechnical mechanics and engineering, and particularly discloses a soft soil foundation settlement monitoring method and system based on multi-field multi-source information, and the method comprises the steps: collecting multi-source data of a target soft soil area; performing constitutive parameter inversion, data standardization and discrete Fourier transform frequency domain conversion on the data to obtain a standardized frequency domain multi-field multi-source data set; based on the data set, a soft soil constitutive parameter library and a soil mechanics physical equation, constructing an FD-PINN frequency domain physical information neural network, embedding the physical equation as a prior constraint, and training the model by adopting an alternating optimization strategy; inputting the real-time frequency domain data flow into the model, and outputting the current settlement amount, the settlement rate and the multi-physical field frequency domain distribution; and in combination with a pre-established large scale model test result, through IDFT inverse transformation, a time-space domain settlement field is reconstructed, multi-stage early warning is triggered, a targeted reinforcement scheme is recommended, the soft soil foundation settlement monitoring precision and the engineering practicability are remarkably improved, and the method is suitable for construction, operation and maintenance of infrastructures such as high-speed rails and highways.

The invention belongs to the field of rock-soil mechanical test equipment, and particularly discloses a shear slip test device for testing mechanical properties of high-temperature fractured rock mass, which comprises a shear test platform, a shear test box, a sound wave emission system, and a temperature control module and a circulating cooling system integrated in the shear test box. The shear test platform realizes independent control of normal force and shear force through a first loading block and a second loading block; the temperature control module and the circulating cooling system can simulate a high-temperature environment and perform a cold and hot cycle test; the acoustic emission system is used for monitoring acoustic emission signals in the rock sample in real time. The device can accurately simulate a high-temperature and cold-hot cycle environment, has high-precision mechanical loading capacity and a multi-parameter monitoring function, provides an effective experimental means for researching the mechanical property and damage mechanism of a high-temperature fractured rock mass, and can be widely applied to the research fields of deep geothermal resource development and enhanced geothermal systems.

The invention discloses a pumped storage power station building foundation dangerous point management and control system based on BIM, and the system comprises a data layer which enables linear engineering monitoring data to be organized into a high-order tensor of pile number * time * sensor type * spatial position through four-dimensional tensor modeling, and carries out the Tucker decomposition, strain rate abrupt change points are dynamically recognized in the compression process by combining sliding window anomaly detection, original data are directly stored, and then a hierarchical storage strategy is implemented on non-abrupt change data through a data value evaluation model driven by deep reinforcement learning; the model layer is used for fusing a physical information neural network, embedding a rock-soil mechanics constitutive equation into an LSTM network to construct a mixed loss function, pre-training a general geologic model through transfer learning, and then carrying out few-sample fine tuning in combination with project data; and the application layer is used for dynamically generating a hazard source list through a BIM model and triggering instant early warning based on the compressed and reconstructed data of the data layer and the output of the model layer, and simulating a disaster situation development path in combination with a digital twinborn technology.

The invention relates to the technical field of underground engineering and geotechnical mechanics, and provides an ABAQUS secondary development-based underground engineering blasting simulation method, which comprises the following steps of: 1, establishing a geometric model and dividing a calculation region into an Euler domain and a Lagrange domain; step 2, calling and realizing a JH-2 constitutive model through a UMAT user subprogram interface of the ABAQUS; step 3, modeling in an Euler domain by adopting a JWL state equation; step 4, applying a coupling Euler-Lagrange method; 5, setting boundary conditions and blasting loading parameters of the geometric model; and step 6, performing transient dynamics calculation, and outputting a result for analyzing a blasting effect. According to the scheme, a high-precision numerical test platform can be provided for underground engineering blasting design and safety control, engineering risks are reduced, blasting parameter configuration is optimized, and remarkable engineering application value and popularization significance are achieved.

The invention discloses a method and system for predicting the full mix proportion strength and modulus of sludge solidified soil, and relates to the field of building materials, and the method comprises the following steps: obtaining related input data of the sludge solidified soil; constructing a physical information neural network model, and embedding a physical equation describing the mechanical behavior of the sludge solidified soil into the neural network model as a constraint; training a physical information neural network model by using the input data to enable model parameters to converge step by step, and comprehensively considering experimental data errors and physical equation residual errors in the training process; and using the trained and converged physical information neural network model to predict the strength and modulus of the sludge solidified soil. The system comprises all modules for implementing all the steps. According to the method, a traditional neural network is combined with a physical equation for describing the sludge solidified soil, and the problems that a traditional prediction method excessively depends on an empirical formula, the data demand quantity is large, and the generalization performance is poor are effectively solved.

The invention relates to the technical field of underground engineering construction, in particular to a subway contact channel freezing method parameter optimization method and system. Through multi-source data fusion and real-time perception, based on a heat transfer theory and soil mechanics coupling model, a three-dimensional stratum stable field distribution diagram is constructed through real-time state parameters, and the stability of the frozen wall is visually presented, so that the limitation that a traditional empirical formula cannot reflect complex geological response is solved; defect features such as non-intersection circles and insufficient thickness are extracted through a multi-scale algorithm, automatic identification and positioning of defects are achieved, subjectivity and hysteresis of manual judgment are overcome, process parameters are optimized in combination with finite element simulation, an optimal parameter set is obtained, and therefore the problem that static parameters are difficult to cope with geological mutation is solved. And finally, a closed-loop optimization mode is formed by comparing the quality evaluation value with a preset threshold value, the'one-time optimization 'mode of a traditional method is broken through, it is ensured that parameters are matched with dynamic geology, and the frozen wall quality and the stratum reinforcement effect are guaranteed.

The invention discloses a multifunctional geotechnical mechanical testing system for controlling temperature, humidity and salinity in an extreme environment, and relates to the technical field of ocean geotechnical engineering and geotechnical engineering. The system integrates a high-precision temperature and humidity and salinity control system, can accurately simulate the influence of complex environments such as extreme temperature and humidity, salt spray corrosion and the like on the mechanical properties of geotechnical materials, supports a direct shear test, a pull-out test, a soil body single-particle crushing test and a geosynthetic material stretching and puncturing test, can distinguish static, dynamic and long-term creep test modes, and can be used for testing the mechanical properties of the geotechnical materials. Comprising creep mechanical property testing under cyclic direct shear and continuous load. A visual monitoring assembly is additionally arranged, so that the microscopic deformation and damage process of the sample can be recorded in real time. Through multifunctional integration, temperature, humidity and salinity joint control, visual monitoring and dynamic and static coupling test devices, the technical bottlenecks of single function, environment simulation limitation and microcosmic observation deficiency of traditional equipment are solved, and high engineering application value and popularization potential are achieved.

The invention provides a high-position rock landslide starting identification method and device under the earthquake action, and relates to the technical field of rock mechanics, and the method comprises the steps: S1, building a high and steep slope numerical model through an exploration data set; s2, applying a strong shock load to the bottom of the high and steep slope numerical model to obtain a velocity field and a stress field of the high and steep slope numerical model; s3, carrying out earthquake fracturing mechanism analysis on the velocity field and the stress field, and constructing a high-position rock mass fracture network; s4, dynamically retrieving a closed loop in the high-position rock mass fracture network, if not, returning to the step S3, and otherwise, entering the step S5; s5, carrying out high-position rock mass sliding stability analysis on the potential instability area defined by the closed loop under the action of strong shock, and calculating to obtain a dynamic stability coefficient; and if the dynamic stability coefficient is greater than a preset value, judging that the high-position rock mass landslide is started, otherwise, returning to the step S3. The method systematically understands the starting condition of the earthquake-induced high-position rock landslide from the perspective of mathematical mechanics, so that the prediction of the high-position rock landslide is more accurate.

The invention discloses transparent soil with high transparency and high similarity with natural soil and a preparation method of the transparent soil. The transparent soil comprises transparent particles, transparent pore liquid and an additive. The refractive indexes of the transparent particles and the transparent pore liquid are consistent, and the contact infiltration characteristic of the particle surfaces and the liquid is improved through the surfactant, so that the transparent soil with higher transparency, such as sandy soil, clay and floury soil, is obtained. Hydrophilic fumed silica is matched with polar pore liquid or hydrophobic fumed silica is matched with non-polar pore liquid to prepare high-strength transparent clay or silt with mechanical properties highly similar to those of natural clay or silt. According to the invention, the clay or silt consolidation time can be greatly shortened. The transparent soil with high transparency and high similarity with natural soil can improve the geometric dimension of a transparent soil model, reduce the dimension difference between a model test and a real engineering problem, and provide a more excellent method for researching various geotechnical geological engineering problems.

The invention provides a lunar lava tube rock wall mechanical parameter testing device and method based on a rebound principle, and relates to the technical field of lunar rock-soil mechanics detection.The device comprises an ejection module, a driving module, an energy storage locking module, a control module and an impact measuring module which are arranged in a protective shell; the ejection module comprises an ejection body of a hollow cylinder structure, the ejection body is arranged in the center of the interior of the protective shell, the upper end face of the ejection body is connected with a clamping pin, a pair of lug stoppers are arranged on the outer walls of the lower portions of the two sides of the ejection body, and the lug stoppers are reset through first springs. The lower end face of the elastic striking body is connected with the upper end of the extension spring, the lower end of the extension spring is connected with the upper end of the striking end support, and the lower end face of the striking end support is connected with the upper end face of the striking rod. The problems that a traditional Schmidt hammer is poor in adaptability in the lunar environment, low in automation degree, ineffective in parameter measurement basis and the like are solved.

The invention discloses a highway high slope landslide early warning method based on multi-source data fusion. The method comprises the following steps: collecting high slope multi-source data; cleaning, synchronizing and standardizing the high slope multi-source data, and constructing a time-space association data set; a future displacement trend is predicted based on an improved ARIMA-GARCH dynamic time sequence model, a modified Mohr-Coulomb slope stability mechanical model is established in combination with a rock-soil mechanical strength criterion, and a potential sliding surface is determined; sHAP value analysis and RF screening key features are utilized to construct a landslide early warning model fused with multi-source data; a model is trained through historical data, parameters are optimized, risk grade dynamic evaluation is achieved in combination with real-time monitoring data, and graded early warning signals are triggered through a DBN; according to the invention, the problems of data isolation and insufficient model generalization ability of an existing early warning system are solved, and high-precision and real-time landslide active early warning is realized.

The invention discloses a recycled concrete precast pile mix proportion improvement method considering acid salt erosion influence, which comprises the following steps: firstly, determining an initial replacement rate and a water cement ratio of a building solid waste recycled concrete precast pile, and then establishing a mechanical property estimation model and a durability estimation model; judging whether the concrete mechanical property and durability of the precast pile meet the design standard or not under the condition of acid salt erosion; if so, completing the mix proportion improvement; if not, the concrete mix proportion is adjusted, and the mechanical property and the durability are evaluated again according to the pre-estimation model until the optimal mix proportion meeting the design requirement is found. The design of the building solid waste recycled concrete precast pile is optimized, and scientific basis and technical support are provided for practical engineering application. The problem that in the prior art, research on building solid waste recycled aggregate in soft soil foundation treatment application is insufficient is solved.

The invention relates to the technical field of space exploration and lunar soil experiments, in particular to a melting centrifugal type mineral particle morphology remodeling device and a lunar soil glass ball preparation method. The device comprises a mineral protolith high-temperature melting system, a mineral melting slurry conveying system, a centrifugal mineral particle size control system and a mineral particle cooling and morphology remodeling system. The preparation method of the lunar soil glass ball comprises the following steps: adding basalt mineral powder and mineral melting additive powder into a melting centrifugal mineral particle morphology remodeling device to obtain simulated lunar soil glass balls with different particle sizes, and performing morphology transformation on the simulated lunar soil glass balls with different particle sizes by using an ion beam gun. And the lunar soil glass ball state of the impact melting history is reduced. According to the method, high-precision engineering mass production of components, morphology and mechanical properties of the lunar soil glass balls is realized through a fusion centrifugal forming and ion beam surface control composite process, and the problem of soil mechanical behavior deviation caused by morphology distortion of existing simulated lunar soil is solved.

The utility model discloses a geotechnical test chamber capable of providing super-large counter-force support, relates to the field of underground structures, solves the problem that counter-force provided by a column type counter-force frame is not large enough, and adopts the technical scheme that a tunnel communicated with the outside is arranged on the side wall of a chamber of the geotechnical test chamber capable of providing super-large counter-force support; reinforced concrete linings are arranged on the top, the bottom and the side walls of the chamber, a first bearing plate is arranged on the surface of the lining on the top of the chamber, and the top face of the first bearing plate is fixedly connected with a first anchoring part; two second bearing plates are arranged on the surface of a lining of the side wall of the chamber, two planes corresponding to the two second bearing plates are vertical and parallel to each other, and the faces, back to the chamber, of the two second bearing plates are fixedly connected with second anchoring parts respectively. According to the utility model, the chamber surrounding rock is used as a counter-force foundation of a soil test, and strong counter-force can be provided for vertical pressure and horizontal pressure required by the soil test. The full-graded coarse-grained soil mechanical property test device is used for full-graded coarse-grained soil mechanical property tests.

The invention provides a mine geological disaster early warning method and system based on digital twinning and electronic equipment, and relates to the technical field of geological disaster monitoring and early warning. The method comprises the following steps: constructing a digital twinborn model corresponding to a target mine based on multi-dimensional geological data and rock physical and mechanical parameters; collecting multi-source heterogeneous monitoring data of the target mine in real time, and mapping the multi-source heterogeneous monitoring data to corresponding grid nodes of the digital twinborn body based on the spatial coordinate relationship so as to update state attributes of the digital twinborn model in real time; according to the rock mass physical and mechanical parameters of the grid nodes and the updated state attributes, a slope stability coefficient is calculated through a rock and soil mechanical model; calculating a displacement predicted value based on historical time sequence characteristics of the multi-source heterogeneous monitoring data by using a data driving model; and carrying out fusion calculation on the slope stability coefficient and the displacement prediction value to obtain a comprehensive early warning index, and when the comprehensive early warning index meets a preset geological disaster alarm condition, rendering a risk area in the digital twinborn body.

The invention discloses a multi-parameter shallow gas detection method which comprises the following steps: S1, self-adaptive sensing network layout and multi-parameter synchronous acquisition: monitoring nodes synchronously acquire underground electrical parameters, soil gas composition and concentration, soil mechanics and pore pressure parameters and an environmental noise background value; accessing a hydro-meteorological data stream of the target area in real time; s2, multi-source interference signal identification and data purification: obtaining a purified multi-parameter data sequence reflecting real geological anomalies; s3, water-gas-force coupling dynamic modeling and migration simulation: outputting a shallow gas migration risk thermodynamic diagram; s4, intelligent diagnosis based on transfer learning and causal discovery: performing time sequence analysis on the purified multi-parameter data sequence, and identifying a gas reservoir core area, a dominant migration channel and dominant control factors influencing gas aggregation and migration; and S5, dynamic risk assessment and graded early warning: quantitatively calculating the risk probability.

The invention relates to the field of mine engineering and geotechnical mechanics, in particular to a rectangular roadway surrounding rock plastic zone prediction system under three-dimensional far-field principal stress rotation. According to the method, the magnitude and direction of the far-field principal stress of the rectangular roadway are obtained through field actual measurement, six stress components of the far-field principal stress of the roadway in a space rectangular coordinate system are obtained through matrix transformation of three-dimensional stress rotation, and a stress component function and a principal stress function of any unit around the roadway are obtained through a complex variable function analytical solution. A proper strength criterion is selected to obtain a roadway surrounding rock plastic zone boundary implicit equation, and the calculation process is coded into an executable automatic system through modular programming. Spatial feature points are extracted through a geometric reconstruction algorithm, and a scientific calculation visualization tool is called to automatically generate a two-dimensional section roadway surrounding rock plastic zone distribution diagram.

The invention discloses a pile sinking soil body response prediction regulation and control method based on a physical model, and relates to the technical field of geotechnical mechanics pile foundation engineering, and the method comprises the following steps: constructing an experimental model, arranging a sensor, and operating a loading device to enable the experimental model to sink a pile; according to the model pile sinking process, the soil body response is monitored in real time, and monitoring data are obtained; inverting the dynamic response of the soil body through the PINN inversion model, and coupling the DEM and the FEM to simulate and predict the response of the soil body; and risk control is carried out through a CEI early warning decision-making method. The device and the method are used for solving the problems of incomplete data acquisition, inaccurate simulation and lack of early warning in a traditional open tubular pile soil squeezing model test.

The invention discloses a method for evaluating surrounding building wall structure deformation caused by foundation pit excavation, which comprises the following steps of: determining foundation pit excavation process parameters and stratum soil mechanical parameters, and determining the size of a foundation pit and the distance between the edge of the foundation pit and a surrounding building; monitoring points are arranged, the deformation condition of wall structures of surrounding buildings is monitored in the foundation pit excavation process, and monitoring data are collected and statistically analyzed; the method comprises the following steps: performing simulation analysis on underground soil deformation caused in the excavation process of a foundation pit by adopting Plaxis finite element calculation software, simulating deformation of a wall structure of a building around the foundation pit due to excavation of the foundation pit, and generating simulation deformation data of a corresponding monitoring point; generating predicted deformation data of the next time or process node through Plaxis finite element calculation software on the basis of the actually measured deformation data of the current time or process node; and predicting and evaluating the deformation degree of the building wall structure according to the predicted deformation data. According to the method, the influence of foundation pit excavation on surrounding buildings is effectively evaluated.

The invention discloses a parameter prediction method and device, electronic equipment and a storage medium. According to the method and the device, the essential rule of a salt cavern gas storage system is described on the basis of a physical driving model; meanwhile, systematic errors, caused by parameter simplification, ignoring of shaft dynamic heat exchange and other effects, of a pure mechanism model are accurately learned and compensated by means of a data driving model, and advantage complementation is achieved through fusion of the two; the technical problem that systematic deviation is generated between model output and actual operation data due to the fact that rock and soil mechanical parameters are simplified, a fixed friction coefficient is adopted or a shaft dynamic heat exchange effect is ignored in an existing pure mechanism model under complex geological conditions can be solved. The technical effects of improving the accuracy and reliability of thermodynamic parameter prediction of the salt-cavern gas storage system, adapting to complex geological conditions and further guaranteeing stable operation of the compressed air energy storage system are achieved.

The invention relates to the technical field of geotechnical engineering and geomechanics, in particular to a round gravel soil constitutive model construction method and system. The method comprises the following steps: performing a triaxial consolidation drainage experiment on round gravel soil to obtain mechanical test data of the round gravel soil; according to the mechanical test data, the Duncan-Chang model is improved; and based on the improved Duncan-Chang model, constructing a roundstone soil constitutive model. According to the method, by improving the curvilinear relation between the axial strain and the lateral strain of the Duncan-Chang model, the volume strain and the tangent Poisson's ratio, the applicability of the Duncan-Chang model to the round gravel soil is improved, and the problem that under the combined action of mountainous area alluviation and lacustrine facies deposition on the rushing-lacustrine round gravel soil, the model is difficult to deform is solved. The problem that an existing constitutive model cannot accurately describe the mechanical behavior of round gravel soil is solved.

The invention relates to the technical field of foundation settlement monitoring, and discloses a BIM-based foundation settlement dynamic monitoring system and a use method, and the BIM-based foundation settlement dynamic monitoring system comprises a BIM parametric modeling module, a dynamic monitoring module and a settlement compensation regulation and control module. The BIM parametric modeling module generates a three-dimensional model containing rock-soil mechanical parameters, underground water level data and soil layer distribution information, and receives real-time data to update a settlement state; the dynamic monitoring module collects foundation key node vertical displacement, bearing structure internal stress and edge horizontal inclination angle data and transmits the data to the BIM module and the settlement compensation regulation and control module. The settlement compensation regulation and control module comprises a compensation decision unit, an execution mechanism unit and a feedback control unit, and a'monitoring-decision-execution-feedback 'closed-loop control link is formed. According to the invention, the three modules are integrated to realize full-flow dynamic linkage of foundation settlement, so that the problems that a traditional geologic model is disjointed with monitoring data and settlement is difficult to compensate in real time are solved, and the construction precision and the structural stability are improved.

The invention discloses a pipeline early warning method, device and equipment, a medium and a product. The method comprises the steps that construction parameters of a target pipeline and current soil mechanics parameters are obtained; determining a vertical external force load of each section of the target pipeline according to the construction parameters and the current soil mechanics parameters; constructing a pipeline model based on the vertical external force load, and determining a mechanical response state of the target pipeline; according to the mechanical response state, early warning information of the target pipeline is determined, and early warning is conducted. The mechanical response state of the target pipeline is determined by considering the soil body condition of the environment where the pipeline is located and the vertical external force load condition of different pipeline sections, and then the high-risk part in the target pipeline is positioned through the mechanical response state and early warning is conducted. According to the method, the mechanical response of the buried pipeline under the action of stratum settlement is rapidly and effectively calculated, the calculation and evaluation efficiency of the stress condition of the buried pipeline under the action of stratum settlement is improved, early warning of settlement danger is achieved, and then the safety of the pipeline is guaranteed.

A multi-medium three-dimensional modeling and rock-soil mechanical response coupling method comprises the steps that a collapse risk assessment model is established according to time sequence evolution data of deformation accumulation, if the local deformation rate exceeds a preset threshold value, a high-risk area is judged, and if the deformation accumulation amount reaches a critical value, a potential collapse position is determined; constructing a spatial prediction model through the high-risk area and the potential collapse position information, and performing quantitative calculation on collapse probabilities of different areas by adopting a risk assessment algorithm to obtain a spatial distribution prediction result of karst collapse; and updating numerical model parameters by adopting spatio-temporal information output by the early warning mechanism, and optimizing and adjusting the prediction precision through a feedback correction mechanism to obtain a karst collapse prediction technical system adapted to complex geological conditions. According to the method, accurate prediction and early warning of the karst collapse are achieved in a data driving and model coupling mode, technical support is provided for prevention and treatment of the karst collapse under complex geological conditions, and the method has important practical value.

The invention relates to a test device and method capable of testing mechanical properties of hydrophilic and hydrophobic unsaturated soil, the test device comprises a pressure chamber, the pressure chamber is located at the center position of the whole device, an axial loading system is located below the pressure chamber, and the axial loading system is connected with the pressure chamber through a loading frame; the axial loading system is connected with the information acquisition system; the pneumatic control system is positioned on the side of the pressure chamber and connected with the pressure chamber through a pipeline; the data acquisition system is positioned beside the console or the computer and is connected with the sensor at each unit; the data processing system is connected with the air pressure control system and the back pressure control system, and the data processing system is connected with the axial loading system; the sample is positioned in the center of the pressure chamber; the hydrophobic soil suction control unit and the hydrophilic suction control unit are located at the upper end and the lower end of the sample, make close contact with the sample, ensure uniform pressure transmission and are connected with the air pressure control system through pipelines. According to the invention, the accuracy and wide applicability of the mechanical property test of the unsaturated soil are improved.

This invention relates to the field of geological disaster monitoring and distance sensor technology, specifically disclosing a real-time monitoring and early warning method for slope deformation based on interferometric radar images. The method includes: acquiring multi-time-series interferometric radar images and extracting high-precision surface deformation field sequences; constructing a physical information neural network model integrating the constitutive relations of rock and soil mechanics; using the deformation field as input to invert the internal stress, pore water pressure, and potential sliding surface of the slope in real time; determining the instability risk level based on preset thresholds and triggering a three-level early warning response mechanism to generate a visualized early warning report. This invention achieves highly timely and interpretable early warnings at the minute or even second level by deeply coupling millimeter-level deformation observation with physical constraints, thus improving the scientific rigor and reliability of slope disaster monitoring.