493 results about "Breakwater" patented technology

The invention relates to the technical field of structure health monitoring, in particular to a breakwater structure health monitoring method based on a sensing network, which comprises the following steps: S1, collecting stress, acceleration, displacement and environmental parameter data of a breakwater; s2, preprocessing the sensing data acquired in the step S1; s3, integrating the data preprocessed in the S2 into a comprehensive data set reflecting the overall structure state of the breakwater; s4, analyzing and calculating the comprehensive data set in combination with a structural mechanical model of the breakwater so as to extract characteristic parameters; s5, constructing a breakwater health assessment model; s6, evaluating the real-time data based on the health evaluation model constructed in the S5, and calculating the health score of the breakwater; according to the invention, through real-time data acquisition based on the sensor network and the sparse Bayesian learning algorithm, comprehensive monitoring and intelligent early warning of the health state of the breakwater structure are realized, and the monitoring precision, the real-time performance and the risk prediction capability are effectively improved.

The invention relates to the technical field of structural health monitoring, in particular to a wharf breakwater intelligent monitoring system which comprises a multi-modal data acquisition module, a data preprocessing module, a stress prediction module, a structural health assessment module, a self-adaptive early warning module and a remote monitoring and maintenance management module. A plurality of data such as sound waves, vibration, pressure, temperature and corrosion are collected in real time, data cleaning, denoising and standardization processing are carried out, a sparse auto-encoder model is used for extracting low-dimensional sparse features, the breakwater stress change trend is analyzed, and a comprehensive report of stress distribution, crack propagation, corrosion loss and structural fatigue is generated through structural health assessment. The early warning threshold value is dynamically adjusted through a self-adaptive early warning mechanism, an early warning notice is sent to a manager, the remote monitoring and maintenance management module supports real-time monitoring and remote configuration and scheduling of maintenance management of the breakwater, the structural safety of the breakwater is improved, the service life is prolonged, and the management efficiency is improved.

The invention, which relates to the technical field of offshore wave simulation, discloses a wave hydrodynamic numerical simulation method for a sea area with a breakwater, comprising the following steps: S1, determining a target sea area, and collecting sea chart data and water depth topographic data of the target sea area; s2, determining a shoreline position of the target sea area, and establishing a water depth terrain database of the target sea area; s3, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area; s4, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S5, based on the wave hydrodynamic two-dimensional model constructed in the S3, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic data of the target sea area. According to the method provided by the invention, the calculation efficiency can be ensured, the wave transmission characteristics of the open type oyster reef are considered, and the influence of open type oyster reef construction on the wave hydrodynamic environment field can be accurately simulated.

The invention provides a breakwater monitoring data preprocessing method and system based on Kalman filtering, and relates to the technical field of breakwater structure safety monitoring. The method comprises the following steps: acquiring original motion data of acceleration, inclination and displacement through a motion attitude sensor to obtain an original data sequence; initializing a state vector and an error covariance matrix; dynamically correcting the state transition matrix and calculating a prediction state vector and a prediction error covariance matrix; a Kalman gain is generated; updating a state vector and an error covariance matrix; and extracting the filtered motion data as a preprocessing result. According to the method, the state transition matrix is dynamically corrected by introducing the wave force feedback, so that the Kalman filtering algorithm can adapt to the wave impact environment, noise interference in monitoring data is effectively inhibited, and the accuracy and reliability of key motion parameter data of the breakwater are remarkably improved.

The invention relates to the field of intelligent detection, and discloses a breakwater structure rapid scanning diagnosis method based on an unmanned aerial vehicle, and the method comprises the following steps: 1, collecting the multi-modal data of an overwater structure and an underwater structure of a breakwater through a sensor carried by the unmanned aerial vehicle; step 2, carrying out space-time alignment processing on the multi-modal data to generate fusion point cloud data; 3, constructing a multi-dimensional tensor representing damage features based on the fused point cloud data; step 4, uploading the damage classification result to a cloud; 5, dynamically adjusting the scanning path planning of the unmanned aerial vehicle according to the damage classification result and the real-time environment parameters; and 6, outputting a three-dimensional visualization result containing the damage position, the damage type and the emergency scheme. Through cross-medium cooperative acquisition of the millimeter wave radar, the sonar and the multispectral sensor, the coverage range and the information dimension of damage detection are expanded, and reliable data are provided for breakwater structure monitoring in a complex marine environment.

The invention relates to the technical field of structural health monitoring and geotechnical engineering, and discloses a breakwater foundation settlement direction real-time monitoring and early warning system and method, and the system comprises a data collection module which is used for obtaining the measurement data of at least one sensor disposed on a breakwater and a foundation of the breakwater in real time; the storage module is used for storing a preset physics-based reduced-order model, and the reduced-order model represents the overall deformation rule of the breakwater and the foundation system through a group of core deformation modes; and the processing module is connected with the data acquisition module and the storage module, and the processing module comprises a data assimilation module which is used for fusing the measurement data and the order reduction model in real time. By arranging the deformation field reconstruction module, the problem that only discrete point information can be obtained through traditional monitoring is effectively solved, real-time and high-precision expansion from sparse measurement to a continuous overall deformation field is achieved, and a more visual and reliable basis is provided for comprehensively evaluating the safety state of a structure.

The present invention relates to the technical field of coastal engineering, and disclosed is a method for evaluating a radiation hydrodynamic force for a concentric cylindrical structure, comprising the following steps: S1, coordinate system establishment: establishing a cylindrical coordinate system orθz and a Cartesian coordinate system oxyz by taking the intersection of the center of a concentric cylindrical structure and a still water surface as the origin, where the z-axis is vertically upward; S2, flow field division: dividing the entire flow field into an outer domain and an inner domain; S3, perforated boundary condition assumption; S4, determining radiation velocity potentials of the inner domain and the outer domain by means of governing equations and boundary conditions; and S5, by means of the expressions of velocity potential functions of the inner and outer domains, determining first-order radiation forces, added masses and damping coefficients generated by the vibration of an inner cylinder and an outer cylinder. The method takes into account both the effects of seismic and radiation hydrodynamic forces, provides accurate structural response prediction, fills the technological gap in the field of seismic analysis of concentric cylindrical structures as breakwater units, and provides a reliable basis for engineering design.

The invention belongs to the technical field of port, coast and offshore engineering breakwaters, and discloses a method and system for evaluating the stability performance of a wave dissipation embankment of a combined seawall. The method comprises the steps of obtaining hydrological data of an area where the combined seawall is located and structural section data of the combined seawall, establishing a wave power numerical model, and performing breakwater body wave climbing simulation and breakwater top wave overtopping simulation on the target combined seawall by adopting the wave power numerical model, the wave force and the wave moment of the breakwater are obtained through calculation, and a wave load index is determined; calculating the self gravity of the wave dissipation embankment of the target combined seawall, the connection force between the wave dissipation embankment and the slope type seawall and the moment of the wave dissipation embankment to the overturning fulcrum to obtain the gravity and the gravity moment of the wave dissipation embankment, and determining the structural index of the wave dissipation embankment; and according to the wave load index and the wave dissipation embankment structure index, the anti-tilting stability and anti-sliding stability safety coefficients are calculated. According to the invention, the accuracy of disaster early warning is improved. The practical application value is realized.

The invention discloses a dynamic response analysis method of a floating breakwater anchor chain system. The dynamic response analysis method comprises the following steps: determining parameters of a floating box and an anchor chain system in the floating breakwater system; a sea condition environment where the system is located is given; motion of the anchor chain unit is described, and a global position vector of any point P on the axis of the anchor chain unit is given; constructing an expression of an anchor chain unit kinetic energy and mass matrix; calculating strain energy and elastic force of the anchor chain unit; calculating the environmental load borne by the floating breakwater anchor chain system; assembling a system mass matrix and a constraint equation of the system; establishing a dynamic equation set of the system, and correcting to obtain a first-order differential equation set; performing simulation to extract displacement, speed and acceleration data of the top end of the anchor chain rope, and substituting the data as external constraint conditions of the top end of the anchor chain into the dynamic equation set; and performing dynamic solution on the first-order differential equation set. According to the invention, the accuracy of dynamic response calculation is improved.

Disclosed is a floating platform integrating wave attenuation with marine energy power generation and a working method thereof, the platform includes a breakwater, a tuned damping wave energy converter, and an offshore floating wind turbine. The breakwater includes double-cylindrical-boxes and connecting bulkheads, and a moon pool area is formed in a middle of the breakwater; the offshore floating wind turbine and the tuned damping wave energy converter are both connected to the breakwater through a connecting rod. A circular groove is formed on an inner side of each of the connecting bulkheads of the breakwater. The breakwater provides the floating base and power generation environment for the offshore floating wind turbine and the tuned damping wave energy converter, and a plurality of the tuned damping wave energy converters can be disposed, and are evenly distributed beneath the offshore floating wind turbine.

The invention discloses a seawater exchange type breakwater management method based on intelligent control, and particularly relates to the technical field of breakwater management. By constructing a multi-parameter correlation model, environmental data such as dissolved oxygen, turbidity and water temperature are collected in real time, the coupling relation is identified, and a risk factor value is calculated, so that a water change control decision is dynamically corrected; by controlling execution units such as a water gate, a water pump or a valve, water changing operation is accurately implemented, feedback data is collected after operation, the control effect is evaluated, then self-adaptive optimization of a next round of strategy is achieved, and the judgment accuracy, control flexibility and ecological safety of the system in a complex environment are effectively improved.

The adjustable floating breakwater comprises a front floating box and a rear floating box which are fixedly connected, a water guide plate capable of rotating around a rotating shaft in the left-right direction is arranged on the upper end face of the front floating box, a plurality of water guide grooves are formed in the rear end of the water guide plate, and a power generation mechanism is arranged at the position, corresponding to the water guide grooves, of the front end of the water guide plate; the rear end of the upper end face of the front buoyancy tank is rotationally connected with a water guide arc plate, the water guide arc plate is located above the rear end of the water guide plate, and the arc-shaped concave face of the water guide arc plate is a wave facing face. A plurality of guide plates are arranged between the front buoyancy tank and the rear buoyancy tank; the first driving mechanism drives the water guide plate to rotate up and down so as to adjust the inclination angle of the water guide plate; the second driving mechanism drives the water guide arc plate to rotate front and back so as to adjust forward thrust to the front buoyancy tank, and meanwhile drives the flow guide plate to rotate left and right so as to adjust the flow guide plate to form an angle with incoming flow. The floating breakwater is convenient to adjust, long-period waves are effectively reduced, long waves are used for autonomous power generation, self-generated power is used for controlling components on the breakwater, and meanwhile the stability of the floating breakwater is improved.

The invention discloses a near-shore ship tracking method and device based on multi-source data fusion and a storage medium, and the method comprises the steps: obtaining and processing first-class radar point cloud data of a wind power plant millimeter wave radar, vibration sensor data of a breakwater, AIS data and second-class radar point cloud data of multiple radar stations; performing space alignment and time alignment on the processed first type of radar point cloud data and the processed second type of radar point cloud data, and performing time alignment on the processed AIS data; fusing the aligned data to obtain target state information; and predicting a plurality of states of the ship at future moments based on the target state information to obtain a plurality of corresponding prediction trajectories, correcting the prediction trajectories based on a wind power plant wake flow model, and screening out an optimal trajectory from the corrected prediction trajectories as a ship track. Therefore, the method can improve the multi-dimensional anti-risk capability, has higher safety guarantee, and can improve the supervision efficiency in a novel offshore wind power plant and other complex environments.

The invention relates to a tide level obtaining method and system based on an OWC wave energy conversion device. The method comprises the following steps: constructing an energy loss prediction model in the air chamber; acquiring field incident wave energy, reflected wave energy, water potential energy increment, kinetic energy increment and pneumatic output energy at the current time period; inputting incident wave energy and reflected wave energy into the model to obtain predicted energy loss; and the tide level variation is solved based on the energy conservation relational expression, and the current tide level is calculated. The system comprises an energy loss prediction module, a wave energy acquisition module, a water body energy acquisition module, a pneumatic output acquisition module, an energy loss calculation module, a tide energy solving module and a tide level calculation module, which cooperatively realize the method. According to the scheme, an external tide gauge station is not needed, the local sea area tide level can be inversed in situ, at high frequency and with high precision, the method is suitable for an OWC-breakwater fusion scene, and cooperative operation of a port and ocean energy is supported.

The invention relates to the technical field of breakwater structure monitoring, in particular to a wharf breakwater real-time stress analysis and early warning system which comprises a stress data acquisition module, a data processing module, a stress analysis module, an early warning module, a display and interaction module and a data storage module. The stress data acquisition module is used for acquiring stress data of each structural part of the breakwater in real time, the data processing module is used for analyzing and preprocessing the acquired data, and the stress analysis module is used for establishing a stress distribution model and dynamically predicting a stress change trend through a finite element analysis method and a long-short-term memory network algorithm; the early warning module generates early warning information based on a preset threshold value and a dynamic adjustment mechanism, the display and interaction module is used for visually displaying a monitoring result and the early warning information, and the data storage module has compression and encryption functions and guarantees the integrity and security of data. According to the invention, accurate real-time monitoring and intelligent early warning of the breakwater can be realized, and the safety and reliability of the breakwater are improved.

The invention provides an intelligent operation and maintenance decision planning method and device based on port breakwater wind power. According to the method, sea conditions, meteorology, structural health and wind turbine generator operation data of a breakwater area are obtained; defense and application risk coefficients of the breakwater and the wind power equipment are generated based on sea conditions and meteorological data, and a defensive task is generated when the coefficients exceed a threshold value. And according to the structure health data, generating a structure health loss coefficient of the breakwater and the wind power equipment, and when a threshold value is exceeded, generating a repair type task. Generating a corresponding urgency coefficient according to a defensive or repair task; and generating a processing priority coefficient in combination with the target resource quantity and the processing duration of the daily task. And finally, based on the defense urgency coefficient, the repair urgency coefficient and the processing priority coefficient, generating a task processing sequence, and sequentially executing defense type, repair type and daily type tasks. According to the method, efficient and safe management of port breakwater wind power operation and maintenance is realized by monitoring and analyzing data in real time and intelligently sequencing tasks.

The invention belongs to the technical field of breakwaters, and relates to a novel breakwater and a construction method and a using method thereof. Each breakwater section of the breakwater comprises an upper platform, a buoyancy tank and a plurality of foundation piles. The upper platform is arranged on a plurality of foundation piles, and a manger board is arranged on the head wave side of the upper platform; pile holes in one-to-one correspondence with the foundation piles are formed in the floating box, so that the floating box is arranged on the foundation piles in a sleeving manner and can move up and down, and the floating box is locked on the foundation piles or unlocked through the hydraulic locking device; one side of the buoyancy tank is attached to the manger board, and the top surface of the buoyancy tank is higher than the bottom surface of the manger board after the buoyancy tank moves downwards to sit at the bottom; the buoyancy tank is provided with a plurality of hollow cavities, communicating pipes with electric valves are arranged on the side walls of the hollow cavities, water passing pipes connected with the water pump are arranged on the bottom walls of the hollow cavities, and the water pump rotates forwards or reversely to introduce water into or discharge the water out of the hollow cavities. The buoyancy tanks are locked on the foundation piles in small waves, the manger boards are used for blocking waves, the requirement for exchange of water inside and outside the port is met, the buoyancy tanks sink to sit at the bottom and jointly block the waves with the manger boards in large waves, and the wave blocking effect is remarkably improved.

The water surface floating type breakwater capable of dispersing the sea wave energy comprises a floating plate, the bottom of the floating plate is connected with a balancing weight through a fixedly-installed mooring rope, and the balancing weight is used for preventing anchor dragging of anchor mooring equipment; an underwater energy dissipation assembly is arranged at the bottom of the floating plate, and the underwater energy dissipation assembly is used for conducting energy dissipation treatment on energy under the water surface and attenuating the underwater energy; a water surface wave-proof assembly is arranged at the top of the floating plate and used for reducing energy of the sea waves step by step and dispersing the sea waves so as to reduce the overall sea wave energy.

The present invention discloses a method for obtaining the reflection coefficient of a floating breakwater, and belongs to the field of marine engineering technology. The present invention constructs a numerical simulation water tank, adopts a mass source wave generation method to generate waves, the wave height is H, and the period is T; obtains the spatial distribution curve of the free liquid surface height of the synthetic reflection wave; and calculates the wave height H of the synthetic reflection wave according to the spatial distribution curve of the free liquid surface height of the synthetic reflection wave. 合 ; Through the formula H 反 =#imgabs0#get H 反 The value of, where a=H 合 / 2, the radian value corresponding to the phase angle A is equal to the phase difference Φ / 2, and the phase difference Φ is obtained by formula 1. Without the use of measuring instruments such as wave height meters and Doppler current meters, the reflection coefficient of the floating embankment can be obtained by vector superposition analysis using the spatial distribution data of the free liquid surface, avoiding the previous method of extracting data through measuring instruments and solving with the help of complex formulas.

The invention discloses a box type breakwater-semi-submersible photovoltaic platform-swing type wave energy integration device, and belongs to the technical field of offshore power generation devices. Comprising a plurality of box type breakwaters, the rear ends of the box type breakwaters are connected with a plurality of semi-submersible type floating photovoltaic platforms, mooring structures are arranged in the semi-submersible type floating photovoltaic platforms at the two ends, the semi-submersible type floating photovoltaic platforms in the vertical direction are connected through swing type wave energy devices, and the swing type wave energy devices are connected with the semi-submersible type floating photovoltaic platforms in the vertical direction. The semi-submersible floating photovoltaic platforms in the horizontal direction are connected through flexible connecting structures. By the adoption of the device, wave energy and solar energy cooperative power generation and multi-energy complementation are achieved, the limitation of a single photovoltaic platform on the power generation time is broken through, meanwhile, the swing type wave energy device with the PTO can further restrain the motion response of the floating body and improve the stability of the device at the time of capturing wave energy, and then the management efficiency is improved.

The invention discloses a novel floating breakwater-oscillating water column wave energy conversion device integrated system which comprises a breakwater assembly, the bottom of the breakwater assembly is fixed through an anchor chain, an air chamber is arranged in the breakwater assembly, the top of the air chamber is provided with an air hole pipeline, the air hole pipeline is connected with a turbine generator, and the turbine generator is connected with an oscillating water column wave energy conversion device. A permeable structure is fixed to the wave facing side of the breakwater assembly, and a gap is formed between the permeable structure and the breakwater assembly. A permeable structure, an oscillating water column wave energy device and a floating breakwater are integrated, the permeable structure is used for dissipating high-frequency short waves, reducing wave loads acting on the structure and improving the stability and survivability of the structure, and in order to improve the energy dissipation effect of the permeable structure, a certain distance is formed between the permeable structure and an air chamber structure; the OWC wave energy device is used for absorbing long-wave energy for power generation, and the blocking capacity of the integrated system to long waves is improved; through integration of the three, a basic platform is shared, sea area resources are saved, operation and maintenance cost is reduced, and diversification of functions of the integrated system is realized.

The invention discloses a wave energy conversion type double semicircular breakwater and a conversion method under various wave conditions. The wave energy conversion type double semicircular breakwater comprises a first semicircular breakwater body and a second semicircular breakwater body which are overlapped front and back, a partition plate is arranged at the overlapping position in a downward extending mode, and an energy conversion module is arranged at the overlapping position upwards; the transduction module is communicated with the front air chamber; the first semicircular breakwater and the partition plate enclose to form a front air chamber, and the partition plate and the second semicircular breakwater enclose to form a rear air chamber; a narrow opening is formed in the partition plate, and the front air chamber and the rear air chamber are communicated through the narrow opening. A water inlet is formed in the outer wall of the front air chamber; an integrally-communicated guide pipe is arranged on the inner wall of the front air chamber, the partition plate and the inner wall of the rear air chamber, and one end of the guide pipe is communicated with multiple rows of small-diameter air holes formed in the upper portion of the outer wall of the front air chamber. Energy utilization of small waves and dissipation of mechanical energy of a water body during large waves are achieved, and the overtopping frequency of the embankment crest is reduced.

The invention discloses a combined type seafloor data center breakwater system which comprises a honeycomb protection layer, an energy dissipation middle cavity layer, a supporting wall layer and a flow guide adjusting mechanism, and the honeycomb protection layer, the energy dissipation middle cavity layer, the supporting wall layer and the combined type seafloor data center are sequentially arranged in the water flow and wave direction. The flow guide adjusting mechanism is installed on the supporting wall layer, the honeycomb protection layer and the energy dissipation middle cavity layer, the supporting wall layer and the honeycomb protection layer communicate with each other, the flow guide adjusting mechanism is used for adjusting the overflowing area of water flow flowing to the combined type seabed data center, and therefore the flow speed of the water flow is adjusted, and the honeycomb protection layer and the energy dissipation middle cavity layer are used for weakening vibration energy in waves. And the flow velocity influence of water flow is reduced. Wave dissipation and heat dissipation of the combined type seabed data center are well achieved, and the wave dissipation efficiency can be adjusted according to the sea condition.

The lifting type floating breakwater comprises an n-shaped floating box, a water tank, horizontal plates and a manger board, the water tank is embedded in a groove part of the n-shaped floating box in a lifting mode through a first connecting part, and the bottoms of two L-shaped floating bodies on the two sides of the groove part of the n-shaped floating box are each provided with one horizontal plate in a sliding mode through a second connecting part; an angle-adjustable manger board is arranged at the upper part of the head wave side of the n-shaped buoyancy tank through a third connecting part; when stormy waves are heavy, in the process that water is injected into the water tank, the water tank moves downwards and the water tank moves downwards, on one hand, horizontal plates on the two sides are pushed to be far away from each other to be unfolded, the width of the breakwater is increased, and on the other hand, the inclination angle of a manger board is increased, and long-period waves are adjusted; when the water tank descends to the bottom, the n-shaped buoyancy tank is driven to sink, so that the overall draft of the breakwater is increased, and the stability is improved. According to the invention, the stability is improved, the capability of reducing different waves is enhanced, and the flexibility and the stability are improved at the same time.

The invention relates to the technical field of ocean engineering, in particular to a floating type array breakwater construction method. The construction method is used for constructing a floating array breakwater formed by a plurality of wave dissipation structures on the wave facing side of a to-be-shielded area, the wave dissipation structures are floating hollow columnar structures, are arranged in an array mode, are stabilized in an installation sea area through common anchor blocks, and are installed in a matched mode in a buoyancy adjusting mode; and dismounting and mounting are carried out according to the position of a construction area, and circulating flow type operation construction is formed. The floating type array breakwater is simple in structure, convenient to construct and operate, capable of providing good wave-resistant protection for a construction area and extremely high in overall construction efficiency, the breakwater is recycled, the use and manufacturing cost is greatly saved, the number of anchor blocks and anchor cables used by the breakwater is small, and the construction efficiency is extremely high.

The invention relates to a breakwater structure for wave power generation and a construction method of the breakwater structure. The breakwater structure comprises a lower barrel body, an upper caisson and a power generation device. A compartment is arranged in the upper caisson, and the power generation device is installed in the compartment. A wave inlet hole is formed in the wave facing side of the upper caisson, a cast-in-place adjusting node is arranged on the top of the upper caisson, and a wave wall, a cable pipe trench, a detachable road plate and an overhauling device are sequentially arranged above the node. The breakwater structure and the wave power generation system are integrated by adopting standard barrel type foundation factory prefabrication and floating transportation installation and combining cast-in-place joint leveling and the detachable road plates. The structure has the advantages of being convenient to construct, controllable in cost, stable in structure, convenient to maintain and the like, is suitable for wave power generation under medium and small wave conditions, and is particularly suitable for green power supply and coast protection in areas such as ports and islands.

The application relates to the technical field of wave power generation, in particular to a novel box-cylinder type foundation breakwater structure, a working method and an installation method, which comprise front rows of power generation towers and rear rows of power generation towers; the front rows of power generation towers are provided with front guide pipes and horizontal front elastic units, and the rear rows of power generation towers are provided with rear guide pipes and horizontal rear elastic units. When waves surge, the waves will strike the horizontal front elastic units and the horizontal rear elastic units and surge into the front guide pipes and the rear guide pipes, that is, the front rows of power generation towers and the rear rows of power generation towers can be simultaneously impacted by the waves and can dissipate the energy of the waves for multiple times, and the front rows of power generation towers and the rear rows of power generation towers both adopt the combined mode of wave surging power generation and wave striking power generation to generate electricity. The application can improve the recycling rate of wave energy, thereby improving the power generation efficiency of the wave energy.

The invention discloses a hazardous chemical substance wharf breakwater monitoring system and method based on multi-source data integration. The method comprises the steps that firstly, multi-mode monitoring data of a first breakwater surface structure, an environment load, a breakwater underwater structure and a breakwater second surface structure are obtained through a multi-source sensor; calculating four safety monitoring coefficients of the first surface structure, the environment, the underwater structure and the second surface structure by using a model comprising a spatial-temporal feature extraction module, a dynamic feature analysis module and a multi-source data fusion module; an eight-layer fine-grained cross fusion mechanism is innovatively introduced, and deep interaction and fusion of multi-modal features are realized through cross-modal attention, gating aggregation and other methods; a dynamic threshold value is obtained by establishing a digital twinborn model, and self-adaptive adjustment is carried out based on fine-grained feature distribution; and finally, accurate early warning from a single index to a multi-mode associated risk is realized through multi-level early warning logic. According to the invention, the state perception and risk early warning capability of the complex system of the hazardous chemical substance wharf is improved.

The invention discloses a barrel type foundation breakwater with prefabricated walkway plates and wave walls and a mounting method of the barrel type foundation breakwater, and belongs to the technical field of breakwater construction. The barrel type foundation breakwater comprises a barrel body, a caisson, a walkway plate, a wave wall, wave dissipation holes, reserved steel bars and steel structure supporting beams. The bottom of the barrel body is arranged underwater, and the upper end of the barrel body is connected with the caisson; a walkway plate and a wave wall are arranged at the top end of the caisson; wave dissipation holes are formed in the side edge of the caisson; a steel structure supporting beam is arranged at the bottom of the walkway plate; reserved steel bars are arranged on the edge of the wave wall. The prefabricated barrel body and the prefabricated caisson are adopted, the height of the cast-in-place section is determined after elevation rechecking is conducted, then the walkway plate and the upper wave wall are installed, after installation is completed, the reserved steel bars of the caisson, the walkway plate and the reserved steel bars of the wave wall are welded, joints are poured, and then a whole is formed, and operation is easy and convenient.

The invention relates to the technical field of breakwaters, and discloses a novel floating breakwater provided with tuned liquid mass dampers, which comprises a floating box, a fixing frame is mounted on the outer side of the floating box, a buoyancy plate is arranged at the lower end of the fixing frame, and assembling components are arranged on the left side and the right side of the fixing frame. Mooring assemblies are arranged on the front side and the rear side of the fixing frame, a sealing cover is connected to the upper end of the floating box in a screwed mode, two sets of partition plates are installed in an inner cavity of the floating box, damping chambers are formed between the partition plates and the floating box and between the two partition plates, and damping mechanisms are installed in inner cavities of the damping chambers. The floating breakwater is simple in structure and low in cost, the movement response amplitude of the floating breakwater under the action of waves can be remarkably reduced, the reflection effect on incident waves is improved, meanwhile, radiation waves generated by movement of the floating breakwater are reduced, and therefore the sea area behind the breakwater is better shielded.