39 results about "Submarine landslide" patented technology

The invention provides a method for evaluating the stability of an offshore wind power pile foundation under the coupling action of submarine landslide and wind wave impact load, and develops a finite element model of pile-soil interaction under the action of complex lateral load. Based on an established seabed landslide impact load quantification formula, the lateral load of the single pile under the coupling action of the seabed landslide, wind, wave and flow in the complex environment is given. And finally, carrying out single pile stability analysis under the action of complex lateral load, and discussing the stability of the single pile foundation by considering the sediment strength of different sea areas at the same time. Through the technical scheme of the invention, the method can judge the stability evaluation of the single pile foundation under the action of the wind wave current load and the potential landslide load in the research area, provides reference for site selection of offshore wind power, establishment of the offshore wind power and the like, and reduces the economic loss caused by the instability of the offshore wind power.

The invention discloses a seabed landslide simulation experiment device and method, and relates to the technical field of marine geological disaster simulation, the seabed landslide simulation experiment device comprises a closed test box, and at least one side of the test box is provided with a visual structure; the seabed simulation assembly is arranged at the bottom of the test box, the seabed simulation assembly comprises a bearing part, the gradient of the bearing part is adjustable, and a sediment layer, a trap layer and a storage layer which are sequentially arranged on the bearing part form a landslide mass; a seabed water pressure simulation assembly; a water flow simulation assembly; a pore water pressure simulation assembly; the measuring assembly comprises a camera module and a sensor module, the camera module obtains image information of the seabed simulation assembly through the visual structure, and the sensor module is used for obtaining the pressure condition in the test box and the pressure condition of the landslide mass. According to the seabed landslide simulation experiment device, a complex seabed environment can be truly simulated, so that the prediction accuracy of an experiment result on an actual seabed landslide condition is improved.

A method for characterizing thixotropic characteristics of submarine landslide mass material, including: performing steady shear on landslide mass material, and determining solid-fluid transition boundary according to variation of yield stress value in yield stress test; performing conversions between shear speed and shear rate and between shear torque and shear stress according to variations of apparent viscosity-shear speed and shear torque-shear speed of landslide mass material at different shear times in apparent viscosity test to obtain variations of the apparent viscosity and the shear stress at different shear rates to construct conventional rheological model; constructing thixotropy characterization equation according to variations of the shear stress and the apparent viscosity with the shear time in the thixotropy test; and constructing rheological model for characterizing the thixotropic characteristics of the submarine landslide mass material according to the solid-fluid transition boundary, the conventional rheological model, and the thixotropy characterization equation.

A submarine landslide-seabed-pipeline three-dimensional mechanical analysis experiment system comprises a high-speed landslide driving system, a high-pressure photoelastic observation system, a three-dimensional stress acquisition system and a central controller. The high-speed landslide driving system drives the photoelastic landslide body to achieve high-speed linear motion under the gradient condition through a crawler-type driving mechanism, and the gradient high-speed motion characteristic of a real submarine landslide is simulated. The high-pressure photoelastic observation system comprises a photoelastic seabed, a photoelastic pipeline assembly, a high-pressure sealed cabin and a top hydraulic loading mechanism, and pore pressure distribution and a three-dimensional stress field in the impact process are dynamically developed through the photoelastic effect by combining the refractive index difference of fluid in pores and a photoelastic material with pore pressure data. The three-dimensional stress acquisition system captures multi-angle photoelastic stripes in real time and solves a global three-dimensional stress tensor. The central controller cooperatively regulates and controls all the systems, and control over high-speed movement, the high-pressure environment and material variables is achieved. The system well meets the quantitative research requirements of the submarine landslide disaster-causing mechanism and the protection design.

This invention provides a method for designing a submarine structure based on the biomimetic characteristics of the peregrine falcon's hydrodynamics. The submarine structure retains the traditional internal structure of a submarine pipeline, but the outermost concrete counterweight layer (5) is modified from its circular shape to a streamlined design that mimics the peregrine falcon's body shape. This streamlined design features a smooth exterior contour and a surface covered with honeycomb-like holes, free of large undulations and sharp corners, effectively reducing fluid resistance. The submarine structure comprises, radially from the inside out, a steel pipe (1), an anti-corrosion insulation layer (2), a thermal insulation layer (3), a casing (4), a concrete protective layer (5), and a honeycomb structure (6). Through the technical solutions of this invention, this method optimizes the hydrodynamic performance of the submarine structure, significantly reducing the impact of hydrodynamic impact loads on the structure. It also demonstrates comprehensive protection against environmental loads such as submarine landslides, undercurrent scour, and sand wave migration. This method has broad application prospects and is suitable for a variety of marine engineering structures.

The invention provides a test device and method for simulating rapid deposition to trigger submarine landslide, and relates to the field of marine geological disaster simulation, and the test device comprises a simulation box, a soil particle release module, a deposition rate measurement module, a contact measurement module and a non-contact measurement module. The device has the beneficial effects that the soil particle release module adjusts the height of a deposited soil body in a soil supply box through a push rod motor, and the suspension amount of soil particles of the deposited soil body in air and the settling amount of the soil particles in water are controlled through the wind speed of a fan, so that sediments are uniformly distributed and deposited on a slope surface; and the deposition rate of the sediment is measured in real time. The test device also realizes collaborative measurement of linear domain lateral displacement and excess pore water pressure in the sedimentary layer. The testing device and the testing method can be applied to simulation of seabed slope response processes under different sedimentary environments and sediment mechanical property conditions, so that a seabed landslide failure instability mechanism is researched.

The present invention discloses a method for evaluating the risk of submarine landslides during the process of hydrate exploitation. First, a thermal-fluid-mechanical-phase change coupling model is established based on a mechanical model and its coupling relationship with a thermal-fluid-phase change coupling model. Subsequently, a multi-physical field coupling numerical simulation platform for hydrate exploitation at the site scale is built according to the established thermal-fluid-mechanical-phase change coupling model. By using the multi-physical field coupling numerical simulation platform for hydrate exploitation at the site scale, a reservoir model of natural gas hydrate in the target area is established based on on-site geological exploration data. The formation settlement behavior is quantitatively analyzed according to the calculation results, and the stress monitoring area is selected. At the same time, the risk of submarine landslides during the exploitation process can be quantitatively evaluated by combining the stress evolution curve in the monitoring area with the Mohr-Coulomb failure curve.

The invention relates to the technical field of marine geological exploration, in particular to a seabed landslide mass recognition and age defining method based on big data analysis, which comprises the following steps: S1, collecting multi-source data such as multi-beam sounding, side-scan sonar and shallow stratum profile, constructing a dynamic weight distribution model, and fusing to generate a three-dimensional terrain model; s2, extracting a gradient sudden change region and an acoustic chaos region as initial boundaries based on a terrain model, verifying boundary validity in combination with a shear wave velocity difference rate, introducing a turbidity current correction coefficient, and outputting a final landslide mass region; and S3, extracting section sequence features and constructing a feature vector group, establishing a mapping table by combining the demersal perforated worm oxygen isotope data of the rock core sample, and outputting an age interval of the sedimentary unit through a matching algorithm. According to the method, through multi-source data fusion, intelligent landslide boundary correction and sequence-fossil combination matching, high-precision identification of the seabed landslide mass and intelligent definition of the deposition unit age are realized.

The invention relates to the technical field of optical cables, in particular to a nonmetal sensing optical cable for ocean dynamic monitoring, the optical cable comprises a cable core, an optical fiber unit and an outer protection unit, the optical fiber unit is wound on the cable core and extends along the axial direction of the cable core; the outer protection unit sleeves the outer side of the optical fiber unit and is used for fixing the optical fiber unit. The multi-layer composite structure is adopted, the sensitization layer improves the sensitivity to external signal changes, and the high-performance optical fiber assembly achieves accurate data transmission and monitoring functions. The wrapping tape layer and the inner sheath provide basic protection for the optical cable, the aramid fiber enhancement layer significantly improves the tensile strength, and the outer sheath is formed by extruding a TPU material, so that the optical cable is endowed with excellent corrosion resistance and durability, and the optical cable can adapt to a complex marine environment and meet the requirement of long-term dynamic monitoring. The method is suitable for real-time stress monitoring of ocean platform pile foundations and submarine pipelines, micro-deformation early warning of submarine landslides and earthquake activities and distributed sensing scenes of ocean temperature and salt flow fields and ecological environments.

The present invention belongs to the technical field of test equipment, and in particular, relates to a submarine landslide physical model test equipment and working method. The equipment includes: a transparent test cabin; a wave-making part, which is arranged at one end in the transparent test cabin; a wave-breaking part, which is arranged at the other end in the transparent test cabin; a simulation component, which is arranged between the wave-making part and the wave-breaking part; a water circulation component, which is connected to the transparent test cabin; and a monitoring part, which is buried in the simulation component. When working, water is firstly poured into the transparent test cabin, and then the simulation component is placed in the transparent test cabin. Waves are made by the wave-making part to simulate the seabed environment. The monitoring part is used to monitor the simulation component placed in the transparent test cabin, and the data of the simulation component is collected. It not only provides teaching test instruments for submarine landslide model tests, but also provides physical experimental data for numerical simulation of submarine landslides, which plays a reference role in the study of submarine landslide phenomena. After the test is completed, the water used in the test is purified and recycled to save water resources.

The invention relates to the technical field of geological disaster assessment, in particular to a seafloor landslide mass stability assessment method based on multi-source geophysical data, which comprises the following steps: S1, acquiring multi-beam sounding, side-scan sonar, seafloor seismograph and sediment columnar sample data, completing space-time registration, and performing equivalent density conversion on acoustic wave impedance and shear wave velocity to obtain an acoustic wave impedance and shear wave velocity; constructing a three-dimensional grid model; s2, based on the three-dimensional grid model, calculating a curvature mutation index by adopting sliding window Fourier analysis, calculating a pressure gradient in combination with pore water pressure data, and generating a characteristic parameter matrix composed of density, curvature and pressure gradient; and S3, based on the characteristic parameter matrix, calculating shear strain energy and gravitational potential energy superposition field intensity, and generating a landslide mass stability map taking the instability probability as an index. According to the invention, a visual three-dimensional landslide mass stability map is constructed, and high-precision identification and three-dimensional early warning of submarine landslide risks are realized.

The invention relates to the technical field of data processing, and particularly discloses a distributed marine earthquake monitoring and data processing system based on the Internet of Things, which comprises a seabed node earthquake sensor network, edge computing equipment, a distributed Internet of Things platform, a central data processing server, a multi-wave-source numerical simulation module and a visual early warning platform, wave field simulation of ocean earthquakes and seabed landslides is optimized through a data processing algorithm, the tsunami wave propagation path, intensity and expected arrival time are displayed in real time, and abnormal wave detection and early warning are carried out based on the wave field topology change rate; data are collected and transmitted in real time through the seabed node seismic sensor network and the Internet of Things platform, multi-wave source simulation and wave field topology change rate detection are integrated, and tsunami and seismic waves are monitored.

The application discloses a kind of pressure-maintaining core cross plate shear device and shear strength test method, device includes sample pressure-maintaining system, test system, control system, data acquisition system;Sample pressure-maintaining system is guaranteed by ball valve to ensure the pressure state, reach the purpose of pressure-maintaining stable before and after testing, test system carries out shear test to test sample shear strength by cross plate, control system realizes the extension and contraction of telescopic rod and the work of torque applicator, ensure that cross plate enters sample and carries out work, data acquisition system is in real time by torque sensor, HX711 module, single-chip microcomputer, RS485 communication serial port acquisition, transport and process data, and save in PC end.The application can carry out the pressure-maintaining core shear test device of testing on ship.It has strong guiding function to study submarine landslide generation mechanism, realize the safe exploitation of flammable ice and ensure the safety of submarine engineering construction.

The application discloses a submarine landslide multi-source data simulation data preprocessing method, belongs to the technical field of marine geological disaster data processing, and comprises multi-source simulation data aggregation and format normalization. Different types and formats of submarine landslide simulation data are integrated into the same data set and converted into a unified data format. According to the application, multi-source data is subjected to space-time registration in a unified geographic reference framework and time reference. Through topographic data re-projection, time series data interpolation synchronization, and accurate matching of strata and sediment parameters to corresponding land elements, strict alignment of multi-dimensional simulation data in spatial position and time node is realized, different physical processes are ensured to be comparable, fusable and superimposable in the same space-time scale, and the collaborative expression capability of multi-source information in landslide evolution mechanism analysis is significantly enhanced.

The invention provides a reservoir stability monitoring device and method in the natural gas hydrate exploitation process. The monitoring device comprises a monitoring well, an electromagnetic induction coil and a measuring circuit. The electromagnetic induction coil is wound on a shaft of the monitoring well, and the measuring circuit is electrically connected with the two ends of the electromagnetic induction coil; according to the electromagnetic induction principle, measured non-electric quantity such as displacement, strain, pressure, flow, vibration and the like is converted into the change of the inductance value of the electromagnetic induction coil, so that sensing monitoring is carried out; according to the measurement method, the monitoring device is longitudinally fixed on the submarine landslide slope. According to the monitoring device and the monitoring method, measured non-electric quantity such as displacement, strain, pressure, flow, vibration and the like is converted into change of coil inductance for monitoring by utilizing an electromagnetic induction principle. The coil with tensile strength is adopted, so that the coil can be deformed in a large range, and the inductance type monitoring device has the characteristic of large strain and is suitable for submarine landslide deformation monitoring.

The present invention discloses a method for multi-scale evaluation of the capping ability of mass transport deposits. The method is as follows: identifying mass transport deposits; judging the continental margin type, depositional system tract, depositional environment and submarine landslide source of the mass transport deposits; finely depicting the mass transport deposit system in seismic profiles, distinguishing its strain domain, counting its thickness, identifying the number of fluid escape structures and the number of floating blocks; establishing an evaluation matrix diagram, plotting the evaluations of each parameter on the above diagram; listing an evaluation table based on the plotting results, assigning scores to each parameter, and calculating the average scores X 盆地 and X 地震 ; based on the sub-item evaluation results, calculating the capping ability score by weighted calculation to determine the capping ability of the mass transport deposits. Starting from seismic profiles, the present invention comprehensively analyzes the capping ability of mass transport deposits with multi-scale parameters, and finally realizes the semi-quantitative evaluation of the capping ability of mass transport deposits to meet the requirements of oil and gas exploration and development at different stages.

The invention provides a test device and a test method for earthquake-triggered submarine landslide based on a large-scale vibration table, the test device comprises a vibration table test module, a waterproof module and a data dynamic acquisition module, the waterproof module is arranged around the vibration table test module, and the data dynamic acquisition module is arranged in the vibration table test module. The vibration table test module comprises a test model box, a foam plastic board, a gravel friction boundary and a vibration table; the waterproof module comprises a waterproof plate and waterproof cloth; the data dynamic acquisition module comprises an acquisition instrument, an acceleration sensor, a soil pressure sensor, a pore water pressure sensor, a stay wire type displacement sensor, a high-speed camera and a supporting rod. Through cooperation of the vibration table test module, the waterproof module and the data dynamic acquisition module, a technical blank in the field of simulation of earthquake triggered submarine landslide by a large vibration table is filled up, and reproduction and simulation of submarine landslide slope dynamic response and instability deformation and damage processes under the action of earthquake can be realized.

The invention provides a submarine landslide motion path monitoring device and a working method, the submarine landslide motion path monitoring device comprises a sink coupling frame, a motion tracking ball, a communication cable and an emergency subsurface buoy, the sink coupling frame is connected with the motion tracking ball through a first fusing releaser; a first battery pack, a three-axis acceleration sensor, a three-axis gyroscope, a three-axis magnetometer and a first-level data storage module are arranged in the motion tracking ball, a deep sea hydrophone is installed on one side of the upper portion of the motion tracking ball, and the motion tracking ball is connected with an emergency subsurface buoy through a communication cable and a second fusing releaser. The emergency subsurface buoy is internally provided with a second battery pack and a secondary data storage module, the bottom is provided with a height alarm, and the top is provided with a satellite positioner. According to the technical scheme, the submarine landslide motion path monitoring device directly monitors and interprets submarine landslide and is matched with a corresponding working method, safe recovery of monitoring data is completed after the landslide occurs, and direct acquisition of key parameters such as speed and displacement in a submarine landslide sediment instability motion process is realized.

The application discloses a submarine landslide multi-source data numerical simulation algorithm and belongs to the technical field of marine geological disaster simulation. The application comprises multi-source data acquisition and preprocessing, collection of multiple types of original data related to submarine landslides, and effective data sources in a unified format through data preprocessing. The application precisely focuses on the feature area playing a key role in landslide evolution by constructing a weighted fusion matrix and introducing an improved convolutional neural network with an attention mechanism, and efficiently extracts core parameters. The application not only realizes deep fusion of multi-source heterogeneous data, but also automatically mines implicit features through deep learning, greatly improves the accuracy and physical interpretability of feature extraction, comprehensively considers multiple boundary conditions such as seawater dynamic load, pore water pressure, contact friction and initial stress, realizes comprehensive description of the complex environment of the seabed, makes the initial state closer to the actual geological conditions, and significantly enhances the physical authenticity of the model.

According to the submarine structure design method based on the tenon fluid dynamics bionic characteristics, the submarine structure keeps the internal structure of a traditional submarine pipeline, and the circular type of a concrete counterweight layer 5 on the outermost portion of the traditional submarine pipeline structure is changed into a streamline type simulating the tenon body shape; according to the streamline type, the outer contour line is smooth, honeycomb-shaped holes are distributed in the surface, large fluctuation and sharp edges and corners do not exist, resistance generated by fluid can be effectively reduced, and the seabed structure sequentially comprises a steel pipe 1, an anti-corrosion insulating layer 2, a heat preservation layer 3, a sleeve 4, a concrete protection layer 5 and a honeycomb hole structure 6 from inside to outside in the radial direction. According to the technical scheme, the method optimizes the hydrodynamic performance of the seabed structure, obviously reduces the influence of hydrodynamic impact load on the structure, and shows comprehensive protection efficiency on environmental loads such as seabed landslide, underflow scouring and sand wave migration. The method has wide application prospects and is suitable for various ocean engineering structures.

The application provides a submarine landslide surge wave impact effect model test device and test method, and the device comprises a landslide body, a baffle, a clamping groove, a sliding groove, a spring, a fixing column, a torpedo anchor, a tension sensor I, a tension sensor II, a vibrating block, an anchor chain, a platform, a soil layer, a box body and an industrial camera. The impact of the landslide body on water in the inclined sliding groove simulates the submarine landslide surge wave load; the impact effect of the submarine landslide surge wave on the anchor chain can be obtained by analyzing the motion track of each vibrating block on the anchor chain and the numerical value of the tension sensor; the two-way mechanical feedback of the anchor chain load to the torpedo anchor end and the platform end under the special motion form of the anchor chain can be further analyzed; the stability law of the platform end on the water surface can be analyzed by the motion law and stress characteristic of the platform end, and the motion mechanical feedback of the submarine landslide surge wave to the offshore platform system via the anchor chain can be determined.

The application provides a submarine landslide intelligent identification and deformation prediction method based on time sequence multi-beam data. The method takes 2.5 m grid DEM obtained by a ship-borne multi-beam sounding system as input, and automatically extracts single-stage submarine landslide rear edge vector through GST coherence weighting, 3D weighted principal component analysis, three-dimensional Kuwahara filtering and region growing algorithm in turn; then, confidence, trend and geometric type are obtained simultaneously by using feature enhancement vectorization, three-dimensional mapping and attribute calculation, so that fine identification of submarine landslide rear edge is realized. Spatial registration based on features is carried out on different period rear edge lines, displacement, trend and curvature difference are calculated point by point, and finally through time and space sliding window weighted extrapolation, historical difference features are superimposed to the latest rear edge line, the next period prediction rear edge vector is automatically generated, and the automatic identification and deformation prediction of multi-period submarine landslide are completed. The method has the advantages of full automation, few parameters, strong noise resistance, short cycle, integrated identification and prediction and the like.

This invention relates to a method and system for in-situ identification of seabed sediments based on dual-source differential vibration characteristics. The method includes: simultaneously acquiring vibration signals at the power source location and the location of the working component of the engineering equipment; using the vibration signal acquired at the power source location as a reference signal and the vibration signal acquired at the working component location as a hybrid response signal; constructing a dual-source differential correction model to obtain a correction signal; extracting multidimensional sediment vibration characteristics from the correction signal to characterize the dynamic response of the sediments; and using a sediment category identification model based on the multidimensional sediment vibration characteristics to identify the seabed sediment category in situ. This invention achieves continuous in-situ identification of seabed sediments without altering existing seabed drilling, penetration, or piling operations, thereby providing reliable sediment information support for engineering activities such as seabed landslide identification and risk assessment, seabed resource exploration, and seabed infrastructure construction.

The invention discloses a method and system for simulating a submarine landslide problem based on double-layer double-phase non-local generalized particle dynamics, and belongs to the technical field of simulation calculation, and the method comprises the steps: dividing a submarine landslide calculation model into a fluid layer and a soil body layer, and respectively generating fluid material points and soil body material points; solving a fluid mass conservation equation by considering the relative speed between fluid substance points and soil substance points; calculating the nonlinear drag force between the fluid and the soil body; solving a motion equation of fluid substance points and soil substance points; updating respective substance information of the fluid substance points and the soil substance points, and applying boundary conditions; and obtaining a simulation analysis result of the submarine landslide calculation model based on the updated material information. A numerical framework is provided for researching the water-soil dynamic coupling problem of the submarine landslide, and more effective protection measures can be designed by simulating the interaction between soil and fluid, so that the influence of the submarine landslide on submarine foundations such as oil and gas pipelines and cables is reduced.

The invention discloses a hydrate area submarine landslide risk assessment method based on cascade machine learning, and belongs to the technical field of marine geological disaster prediction. The method comprises the following steps: firstly, acquiring historical landslide data, hydrate occurrence data and various environmental characteristics of a research area, and preprocessing the historical landslide data, the hydrate occurrence data and the various environmental characteristics; constructing a hydrate occurrence data set based on local hydrate data and environmental characteristics, training a neural network model fused with physical constraints, predicting the hydrate occurrence depth of the whole region, and generating a distribution diagram; and finally, fusing the prediction depth as a key feature with an environment feature, constructing an enhanced landslide data set, and training an ensemble learning model by adopting a dynamic weight integration strategy based on a geological landscape unit to complete landslide risk prediction. According to the method, the prediction bottleneck caused by hydrate data scarcity is effectively solved through the cascade architecture, the rationality and robustness of the model are improved through physical constraints, and high-precision and interpretable evaluation of the submarine landslide risk of the hydrate region is realized.

The invention provides a submarine landslide risk prediction method and device, and the method comprises the steps: dividing a submarine slope of a first sea area into sub-sea areas, obtaining the sounding, boundary and geotechnical material strength parameters of the sub-sea areas, respectively selecting the sub-sea areas as a source area and a target area, constructing a three-dimensional search grid, and generating search points, the method comprises the steps of obtaining a reference deterministic model through a three-dimensional slope stability model, generating rock-soil random parameters conforming to logarithmic normal distribution, importing the reference model to calculate a safety coefficient, constructing a data set by using the safety coefficient of a three-dimensional search grid, sounding and the rock-soil random parameters, and training a prediction model based on domain adversarial neural network transfer learning. And finally, predicting a prediction safety coefficient of the second sea area seabed slope according to the prediction model, thereby rapidly completing risk assessment of the second sea area seabed slope.

The application provides a submarine landslide risk prediction method and device, wherein the method comprises the following steps: dividing a first submarine slope into subsea areas, obtaining the depth, boundary and rock-soil material strength parameters of the subsea areas, selecting the subsea areas as source areas and target areas respectively, constructing a three-dimensional search grid and generating search points, obtaining a benchmark deterministic model through a three-dimensional slope stability model, generating rock-soil random parameters conforming to a logarithmic normal distribution, importing the benchmark model to calculate a safety factor, constructing a data set by using the safety factor of the three-dimensional search grid, the depth and the rock-soil random parameters, training a prediction model based on domain adversarial neural network transfer learning, and finally predicting the prediction safety factor of a second submarine slope according to the prediction model, so that the risk evaluation of the second submarine slope can be quickly completed.

The present invention relates to the field of marine geological exploration technology, and specifically to a method for identifying and dating submarine landslides based on big data analysis. The method comprises the following steps: S1, collecting multi-source data such as multi-beam bathymetry, sidescan sonar, and shallow stratigraphic profiles, constructing a dynamic weight allocation model, and fusing these data to generate a three-dimensional terrain model; S2, extracting slope abrupt change zones and acoustic chaos zones based on the terrain model as initial boundaries, verifying the validity of these boundaries by combining shear wave velocity difference ratios, introducing turbidity correction coefficients, and outputting the final landslide region; S3, extracting profile sequence features and constructing a feature vector group. This is then combined with benthic foraminifera oxygen isotope data from core samples to establish a mapping table, and using a matching algorithm to output the age interval of the sedimentary unit. The present invention achieves high-precision identification of submarine landslides and intelligent dating of sedimentary units through multi-source data fusion, intelligent landslide boundary correction, and sequence-fossil combination matching.

The present invention discloses an experimental device and method for simulating submarine landslides triggered by the collision of icebergs with submarine slopes. The experimental device includes a temperature control water tank system, an orbital arrangement system, an ice block vertical impact system, an ice block horizontal impact system, a submarine slope, and an overall control system: The temperature control water tank system is used to simulate the low-temperature environment of glacial waters. The orbital arrangement system is used to change the falling position of the ice block relative to the submarine slope. The ice block vertical impact system controls the falling height of the ice block to simulate the vertical collision behavior of ice blocks falling from different heights on the iceberg with the submarine slope. The ice block horizontal impact system controls the horizontal movement speed of the ice block to simulate the horizontal collision behavior of icebergs with different drift rates under the action of ocean currents with the submarine slope. The overall control system enables each system to work together to accurately simulate the entire process of submarine landslides caused by the collision of icebergs with the submarine slope during the falling and drifting movements.

The invention provides a combustible ice and geothermal collaborative development and utilization system and method, and the system comprises an exploitation platform; the geothermal well is used for introducing a circulating heat storage medium, and the heat storage medium is used for transmitting heat in the geothermal layer into the mining platform and heating the combustible ice layer; the gas well is used for transmitting decomposed gas generated in the combustible ice layer into the exploitation platform; and the pressure regulating device is used for controlling the pressure change rate of the combustible ice layer to be kept below a rate threshold value. According to the combustible ice and terrestrial heat collaborative development and utilization system and method, heat exploited in the terrestrial heat layer is used for heating combustible ice in the combustible ice layer, heating energy consumption of the combustible ice layer is omitted, and therefore the exploiting cost of the combustible ice is effectively reduced, in addition, the pressure change rate of the combustible ice layer is controlled to be kept below the rate threshold value, and the exploiting efficiency of the combustible ice layer is improved. And the risk of occurrence of disasters such as submarine landslide and earthquake is greatly reduced.