596 results about "Wind wave" patented technology

The invention discloses an offshore platform anti-collision device and method based on multi-mode BEV perception, and the device comprises a three-dimensional fusion distance measurement module, a UWB distance measurement module, a ship navigation state monitoring module, a platform marine environment monitoring module, and a central processing unit. The three-dimensional fusion ranging module comprises a holder, a laser radar and a camera, and is used for performing 360-degree three-dimensional scanning on the periphery of the offshore platform; the UWB distance measuring modules are installed on the periphery of a ship and pile legs of an offshore platform. The ship navigation state monitoring module is used for acquiring ship position, navigational speed and course information in real time; the platform marine environment monitoring module collects wind wave data and weather data near the offshore platform and route information of passing ships through network communication. The invention discloses an offshore platform anti-collision device with real-time monitoring and collision risk assessment functions, the anti-collision safety of an offshore platform is improved, and the occurrence rate of collision accidents is reduced.

The invention discloses a wind wave-seabed-pile foundation-photovoltaic array multi-physics field coupling calculation system for an ocean photovoltaic power station. The system comprises a wave model construction module, a photovoltaic array wind load numerical simulation module and a multi-physics field coupling numerical model integration module. The wave model construction module is used for extracting wave elements and constructing a wave model; the photovoltaic array wind load numerical simulation module is used for performing photovoltaic array wind load numerical simulation based on the extracted wave elements and the constructed wave model; and the multi-physics field coupling numerical model integration module is used for carrying out multi-physics field coupling numerical model integration, solving and verification based on a numerical simulation structure. According to the method, the wind wave load, the seabed seepage field, the pile foundation stress field and the photovoltaic array wind field are cooperatively calculated by building the multi-field dynamic coupling model, and therefore the accuracy and reliability of offshore photovoltaic power station pile foundation bearing performance evaluation are improved.

The invention belongs to the technical field of comprehensive utilization of ocean renewable energy sources, and particularly relates to a pilot frequency coupling-based wind wave energy multi-degree-of-freedom broadband control method, which comprises the following steps of: performing frequency domain identification on wind wave environment characteristics, and constructing a wind wave pilot frequency energy coupling model; based on the motion response characteristics of the multi-degree-of-freedom floating platform, designing a pilot frequency energy regulation and conversion mechanism; a full-working-condition dynamic optimization control strategy is adopted, and cooperative operation and energy flow self-adaptive distribution of the wind energy conversion unit and the wave energy conversion unit are achieved. Aiming at the significant difference and relevance of wind energy and wave energy in frequency characteristics, time scale and spatial distribution, a pilot frequency wind wave coupling dynamic model is established, and broadband capture of low-frequency wind-induced and high-frequency wave-induced coupling energy is realized under complex sea conditions through multi-degree-of-freedom motion decoupling and state observation, so that the wind-induced and high-frequency wave-induced coupling energy is obtained. The energy utilization rate, the attitude stability and the structural safety of the system are effectively improved, and good robustness and engineering adaptability are achieved.

The invention discloses an SAR sea surface flow velocity inversion method based on physical guidance and data driving fusion, and relates to the field of flow velocity inversion, and the method comprises the steps: carrying out the non-geophysical Doppler frequency shift correction of the Doppler frequency shift observed by a spaceborne synthetic aperture radar, and obtaining the geophysical Doppler frequency shift; predicting based on a wave-induced Doppler frequency shift model according to a radar incident angle, reanalyzed wind direction data, a sea surface 10-meter height wind speed inverted by an SAR (Synthetic Aperture Radar), a simulated wind wave parameter, a simulated surge parameter and a simulated maximum wave parameter to obtain a wave-induced Doppler frequency shift; the wave-induced Doppler frequency shift model is obtained based on physical guidance and data-driven modeling; doppler frequency shift generated by sea surface flow is determined according to the geophysical Doppler frequency shift and the wave-induced Doppler frequency shift; according to the method, the Doppler frequency shift generated based on the sea surface flow is converted to obtain the sea surface radial flow velocity, the wave-induced Doppler frequency shift is accurately removed, and reliable inversion of the sea surface flow velocity is realized.

The invention belongs to the technical field of ocean renewable energy power generation, and particularly relates to a floating type storm power generation system control method based on knowledge distillation and a partitioning strategy. Constructing a multi-teacher model system; knowledge distillation and student model training; designing a partition control strategy; designing a target function; designing a weight adaptive mechanism; defining constraint conditions; performing upper layer optimization solution; executing a lower-layer control instruction; and dynamically feeding back a correction mechanism. The method covers all operation and survival working conditions of the combined power generation system, on one hand, the modeling difficulty and complexity of a control model are reduced, the real-time performance and reliability of prediction and control are improved, on the other hand, the zoning control strategy is proposed in combination with the stormy wave condition from the angle of engineering application of the combined system, and the control efficiency is improved. Therefore, the energy utilization efficiency and the operation stability of the floating type wind and wave combined power generation system under complex sea conditions are enhanced.

The invention discloses a strong anti-overturning power generation device and method based on wind wave combined capture, and the device comprises a four-column type semi-submersible fan platform and a wind driven generator located above the four-column type semi-submersible fan platform, and the four-column type semi-submersible fan platform comprises hollow columns. The bottom of the hollow stand column is fixedly connected with the bottom of the outer side stand column through a horizontal column, a floating wave energy absorption system is arranged on the outer side of the outer side stand column, and the output end of the floating wave energy absorption system is connected with the input end of a power generator system through a bevel gear power generation system in the hollow stand column. One end of the floating wave energy absorption system is connected with the spring system in the hollow stand column; the core technical problems that an existing device is poor in stability, high in cost, low in efficiency, weak in adaptability and the like are solved.

The invention relates to a ship navigation method and device for resisting wind wave influence, and belongs to the technical field of ships, and the method comprises the steps: carrying out the coupling of first data based on an MMG model, and obtaining a meteorological constraint condition; the ship state quantity change rate is obtained based on the state quantity and the control quantity of the target ship, the state quantity is obtained based on the first data, and the control quantity is obtained based on the propulsive force; constructing a target function based on the error of the state quantity and the error of the control quantity of the target ship according to a model predictive control theory; solving the target function by taking the ship state quantity change rate, the initial state quantity of the target ship, the value range of the control quantity and the meteorological constraint condition as constraint conditions to obtain a control quantity set; obtaining a propeller rotating speed and a rudder angle of the target ship at the next moment based on the control quantity set; and controlling the target ship to sail based on the propeller rotating speed and the rudder angle at the next moment. According to the invention, the accuracy of the ship navigation trajectory is improved.

The utility model discloses an unmanned ship rollover prevention device which comprises two rollover prevention assemblies of the same structure, the two rollover prevention assemblies are symmetrically and fixedly installed on the two side portions of a ship body, each rollover prevention assembly comprises an installation base, an extension module and a driving module, the installation bases are fixedly installed on the side portions of the ship body, and the extension modules are fixedly installed on the side portions of the ship body. A mounting groove is formed in the mounting base, one end of the extension module is fixedly mounted in the mounting base, the extension module is located in the mounting groove, and the driving module is mounted in the ship body and connected with the extension module; according to the anti-rollover device for the unmanned ship, the anti-rollover assemblies are arranged on the two sides of the ship body correspondingly, when the anti-rollover assemblies are unfolded, the buoyancy of the ship body can be effectively enhanced, meanwhile, the base contact area of the ship body and the water surface is enlarged, the overall supporting area of the ship body is enlarged, and the wind wave resistance is improved; the situation that the ship body rolls over due to overlarge storm waves is effectively reduced, then the safety of the ship body is effectively guaranteed, and the possibility that the ship body is damaged is reduced.

The invention discloses an unmanned ship adaptive optimal interference control method based on reinforcement learning, and particularly relates to the technical field of unmanned ship automatic control, and the method comprises the steps: building an unmanned ship trajectory kinematics model based on the position information and heading angle information of an unmanned ship under a geodetic coordinate system, and the corresponding speed information under an unmanned ship appendage coordinate system; the method comprises the following steps: establishing an unmanned ship trajectory dynamics model by considering the control operation of the unmanned ship and the time-varying environment interference problems of wind, waves, flow, unmodeled dynamics and the like in a marine environment in which the unmanned ship is located; introducing a radial basis function neural network based on a set unmanned ship trajectory mathematical model; designing a self-adaptive interference observer to estimate and offset time-varying environment interference in unmanned ship trajectory tracking; based on a radial basis function neural network and an interference observer, an unmanned ship adaptive interference suppression controller is designed by using an adaptive vector backstepping method.

The invention discloses a ship route multi-target optimization model oriented to a composite sea condition scene, and relates to the technical field of ship route management, comprising the following steps of: acquiring ship navigation state data and marine environment data in real time by using marine monitoring equipment, a sensor network and ship equipment; establishing motion models of the ship under different sea conditions in combination with historical data; according to the method, the dynamic attitude model of the floating obstacle is constructed, dynamic changes such as rolling and pitching of the floating obstacle under the action of stormy waves are captured in real time, and a time-varying risk field is constructed in combination with a trajectory uncertainty ellipse. Compared with a traditional static obstacle processing mode, the model can accurately quantify real-time changes of the dynamic windward area, the resistance coefficient and the influence range of the obstacle, route planning errors caused by neglecting the dynamic characteristics of the obstacle are avoided, the movement state of the obstacle is updated in real time through the dynamic attitude vector, and the obstacle processing accuracy is improved. The ship can avoid the risk area expanded due to the posture change of the obstacle in advance, and the collision probability is remarkably reduced.

An electric ship seaborne charging docking device comprises a waterproof box, a guide plate is detachably connected to one side of the waterproof box in a sliding mode, a plurality of interfaces are formed in the guide plate, inserting connectors are arranged on the guide plate on the outer sides of the interfaces, and guide holes are formed in the guide plate on the two sides of the interfaces. A directional inserting mechanism is arranged in the waterproof box, the directional inserting mechanism comprises a fixing frame installed on the waterproof box, a sliding rod is arranged on the fixing frame in a sliding mode, and end plates are fixedly arranged at the two ends of the sliding rod respectively; a fixing plate is further arranged between the front sides of the end plates, a fixing block is arranged on the front side of the fixing plate, plugs in one-to-one correspondence with the connectors are installed on the fixing block, guide rods are arranged on the portions, on the two sides of the plugs, of the fixing plate, and guide heads are arranged at the front ends of the guide rods. Butt joint position deviation caused by sea stormy waves can be automatically corrected, accurate centering of a charging interface is ensured, meanwhile, butt joint impact is effectively absorbed, and the stability of equipment in a wave environment is improved.

The invention discloses a wind wave flow-earthquake coupling load simulation device and method for an offshore wind power system, and relates to the technical field of offshore wind power. The device comprises a comprehensive simulation platform, a model installation area and a data acquisition and monitoring system, wherein the comprehensive simulation platform cooperatively simulates a wind wave flow and an earthquake coupling load through a rectangular water tank, a vibration table system, a wave maker system and a water flow driving device; the model installation area is provided with special installation structures matched with multiple types of foundations such as pile foundations and jacket foundations, and multiple types of sensors are arranged in a matched mode. And the data acquisition and monitoring system realizes data acquisition, analysis and image recognition. According to the method, system safety evaluation is completed through model preparation, coupling load application and data acquisition and analysis. The problems that an existing device is single in simulation and poor in adaptability are solved, and an accurate and reliable experiment means is provided for stability research of an offshore wind power system.

The invention discloses a full-coupling numerical simulation system and method for a wind and wave hybrid energy obtaining system, and relates to the field of data analysis, and the method comprises the steps: generating an aerodynamic load of a current period based on incoming flow wind speed and coupling dynamics response data of a previous simulation period; based on preset mooring system parameters and the coupling dynamics response data of the previous simulation period, generating a mooring load of the current period; in the random wave field, determining the hydrodynamic force of the floating foundation entity and the wave energy power generation entity, and generating a wave load; determining a PTO force based on the relative motion between the power generation platform and the wave energy power generation entity; and taking the aerodynamic load, the mooring load, the wave load and the PTO force as external force terms in the same time domain kinetic equation for unified solution, and obtaining a coupling kinetic response of the current simulation period. According to the full-coupling numerical simulation system and method for the wind and wave hybrid energy obtaining system, the simulation precision of the simulation system can be improved, and the overall calculation efficiency of the system is improved.

The invention discloses a marine equipment impact test platform, and relates to the technical field of marine equipment tests. The device comprises a test pool, the bottom of the test pool is fixedly provided with a plurality of water cannon pipes, the top ends of the plurality of water cannon pipes are fixedly provided with turning pipes, the test pool is internally provided with a test floating platform, the test floating platform is internally fixedly provided with a placing platform, and the placing platform is internally provided with equipment to be tested. By arranging the water cannon pipes, a high-pressure water source conveys high-pressure water flow into the test pool through the water cannon pipes, and meanwhile, the water flow is turned through the turning pipes, so that irregular undercurrent is formed in the test pool, large-scale waves appear on the water surface of the test pool, and the test floating platform shakes along with the waves; the wave amplitude can be controlled by controlling the water pressure, so that the stability of the to-be-tested equipment when the ship body is impacted by waves is tested, the scene that the ship body shakes in storm waves is simulated, and the test result is closer to the actual environment.

The invention provides a jacket type offshore electrical platform optimization method based on a sequential quadratic programming algorithm. The jacket type offshore electrical platform optimization method comprises the following steps: S1, establishing a parameterized offshore electrical platform structure analysis model; s2, calculating an environmental load borne by the offshore electrical platform by adopting an equivalent static load method; s3, establishing an offshore electrical platform optimization model which comprises a target function and a constraint function; s4, performing optimization design by adopting a sequential quadratic specification algorithm; and S5, performing dynamic analysis on the optimal structure, judging whether the optimal structure meets a constraint condition or not under a dynamic load working condition, if so, ending optimization, and if not, manually adjusting the size of the component which does not meet the constraint until the constraint condition is met. According to the method, the sequential quadratic programming algorithm is adopted, the optimization efficiency is high, the engineering optimization requirement is met, the size optimization of the offshore structure considering the pile-soil interaction under wind, wave and flow loading can be achieved, and the cost is further reduced on the premise that the structural stability and safety are guaranteed.

The utility model belongs to the technical field of ships, and particularly relates to a launching barge anchoring equipment reinforcing structure which comprises a launching barge. The launching barge comprises a buoyancy tank in the middle and buoyancy towers arranged at four corners of the buoyancy tank; anchoring equipment is arranged on the buoyancy tank, the anchoring equipment is used for fixing the launching barge in a water area, and the buoyancy tank comprises a buoyancy tank deck and a buoyancy tank end sealing plate; a fixing reinforcing device is arranged on the anchoring equipment and used for reinforcing the anchoring equipment. By arranging the anchoring equipment, when a ship is berthed, the anchoring equipment can fix the ship at a preset position and prevent the ship from drifting due to external force such as stormy waves, the structural strength of the anchoring equipment can be enhanced by arranging the fixing and reinforcing device, more loading force can be borne, and falling and damage caused by insufficient structural strength are prevented; the safety of the ship is influenced. The stable, safe and controllable operation of the ship entering and exiting the launching barge and the sinking and floating process is ensured, and the reinforcing structure of the launching barge anchoring equipment is reliable.

The invention discloses a complex sea condition unmanned ship path planning method and system based on a cost grid map. The method and system are suitable for water area navigation tasks of complex environments including ocean currents, wind wave interference, unstable GPS signals and the like. According to the method, firstly, a navigation area is dispersed into a two-dimensional grid map, multi-source environment information such as ocean current velocity, wind speed, GPS signal intensity and visibility is fused, and a comprehensive path cost function is constructed; on the basis, the motion state of the unmanned ship is modeled into a triple containing the position and the course, and course change cost is introduced to represent the steering cost of the unmanned ship. In the path search process, a weighted A * algorithm is adopted, and a multi-target path cost function and a heuristic estimation function are combined to realize efficient path search. According to the method, high-risk areas can be effectively avoided, the steering frequency is reduced, the energy consumption of the unmanned ship is reduced, the safety and feasibility of path planning are improved, and the method has good engineering applicability and robustness.

The utility model discloses a multifunctional deep sea environment simulation system, and relates to the technical field of deep sea engineering experiment devices. Comprising a wave flow experiment water tank which is a containing cavity capable of bearing water, and the top of the water tank is of an open structure; a deepwater experiment area, a transition experiment area and a shallow water experiment area are sequentially arranged in the water tank according to the wind direction; the fan array is used for providing a wind field with a preset condition required by an experiment above the water body; the flow guide array is used for guiding and controlling air generated by the fan array; the current generation array is used for generating current and completing circulation of the water body in the wave current experiment water tank through a backflow channel; the wave making array is used for generating waves with different periods and wave heights for the water body; and the wave absorbing plate is used for dissipating energy of the generated waves. According to the system, multi-factor combined action experiment simulation can be synchronously carried out, and the design precision is remarkably improved; the wind wave coupling effect on the structure is achieved, and the real sea wind wave environment is simulated.

The invention discloses a direct-drive propulsion ship navigational speed optimization control method, which comprises the following steps of: acquiring ship navigational speed and wind, wave and flow meteorological data in a ship channel, combining ship navigational resistance data, a preset navigational time limit and a ship direct-drive motor efficiency characteristic curve, and taking the output rotating speed of a ship direct-drive motor as an optimization variable; the particle swarm optimization algorithm is adopted for optimization calculation, the optimal rotating speed target value of the direct-drive motor is obtained, the output rotating speed of the direct-drive motor is adjusted, on the basis that the sailing time limit requirement is met, the running efficiency of the direct-drive motor is improved, and the consumption and operation cost of a ship are effectively reduced. The optimization control method is suitable for an existing direct-drive propulsion ship, it can be guaranteed that the ship sails stably under the complex sea condition, ship body shaking and speed fluctuation caused by wind wave flow impact are reduced, the motor operation efficiency can be effectively improved, and energy consumption and operation cost are reduced.

The invention provides a hydrodynamic environment forecasting method and system for green navigation of coastal ships, and relates to the technical field of navigation. Aiming at the problem of relatively low accuracy of a forecast result in the prior art, the method comprises the steps of obtaining a calculation boundary condition; monitoring mark stations are arranged at the key positions, and actually-measured hydrodynamic environment data and actually-measured storm data are obtained; establishing a tide wave coupling numerical model according to calculation boundary conditions, and performing model calibration according to measured data; the calibrated tidal current wave coupling numerical model outputs initial environment forecast data according to calculation boundary conditions; comparing the actually measured real-time data with the initial environment forecast data to obtain forecast deviation; and dynamically correcting the calibrated tide wave coupling numerical model in a periodic manner according to the forecast deviation, and correcting the tide wave coupling numerical model to output final environment forecast data according to calculation boundary conditions. The periodic dynamic correction mode accurately adapts to the change characteristics of tidal current and waves, small deviation of each period is eliminated in time, and the accuracy of a forecast result is improved.

The invention relates to the field of ocean engineering equipment, and discloses a device and method for water surface close-range active auxiliary recovery of an unmanned autonomous vehicle, and the device comprises a blocking frame, a power assembly, an oscillation stopping hook module, a hoisting hook module, a suction device, a release device and a buoyancy material; the buoyancy material is fixed on the blocking frame and is used for providing static buoyancy; the power assembly is installed on the lower supporting structure of the blocking frame and located below the waterline. The power assembly is arranged below the blocking frame, so that the recovery device is endowed with independent water surface maneuvering capacity. Compared with a passive recovery mode which only depends on mother ship maneuvering or UUV autonomous homing, the device can actively approach the floating UUV by utilizing thrust and correct course deviation, and can realize axis alignment with the UUV even in a non-still water environment with stormy wave interference, so that the flexibility of recovery operation and the capture success rate are improved.

The invention relates to the field of wind power, and provides a foundation device for a floating type fan, a wind turbine generator and a control method. The foundation device for the floating type draught fan comprises a base. The tower is mounted on the base and used for mounting a fan assembly; and the propeller is installed on the base and electrically connected with the wind measuring mechanism of the fan assembly, and the propeller is suitable for adjusting the pose of the base based on wind measuring data of the wind measuring mechanism. According to the foundation device for the floating type fan, the pose of the base can be adjusted in real time according to wind measurement data, and it is ensured that the fan assembly is always located at the optimal windward angle; wind energy can be captured to the maximum extent, and the power generation efficiency and the overall operation performance of the fan are improved; stable operation can be kept under different ocean conditions, and the adaptability to complex environments is remarkably enhanced; the wind energy capturing efficiency is optimized, structural vibration and fatigue loads caused by natural factors such as stormy waves can be reduced, the service life of the draught fan and the supporting structure of the draught fan is prolonged, and the stability and safety of the whole system are improved.

The invention discloses an acoustic-optical-electric multi-dimensional sensing integrated underwater disaster-causing object monitoring system which is suitable for water areas with strict stability requirements such as nuclear power plants. The system comprises a floating body, a control integrated cabin, a solar power supply module and a liftable regulation and control cabin. The regulation and control cabin is driven by a rack-gear mechanism and can drive the acoustic, optical and electrical monitoring modules installed on the outer wall of the regulation and control cabin to dive as a whole, and flexible adjustment of the monitoring depth is achieved. When stormy waves are large, the gravity center of the system can be lowered through the descending regulation and control cabin, and the anti-overturning stability is further enhanced by combining the active water injection function of a water storage cavity in the descending regulation and control cabin. In addition, by coordinating multidirectional drainage of the water storage cavity, active impact resistance and low-speed position fine adjustment can be achieved. Through collaborative design of the structure and control, the stability of the floating body is improved, meanwhile, continuous, stable and collaborative work of acoustic, optical and electric sensors under complex hydrological conditions is guaranteed, and reliable, multi-dimensional and in-situ monitoring of underwater disaster-causing objects is achieved.

The application relates to the field of water ecological environment, in particular to a floating island device for water ecological environment, which comprises a floating block, the floating block is spliced by a plurality of rectangular block structures, hollow floating pipes for fixation are arranged at the edges of the floating block, inclined plates are installed on the four edges of the floating block, support plates are arranged in the middle sides of the inclined plates, the support plates are cross-shaped, fixed columns are arranged at the centers, the fixed columns contain power supplies, and vertical telescopic rods are installed in the inner sides of the vertically arranged support plates. The extendable air cushion structure can splice multiple floating islands into a whole according to actual control and the size of current wind and waves, and can directly adhere to the bank when necessary, so that the overall fixation integrity and the fixation effect with the bank are provided, and the phenomenon that the floating islands collide with each other to cause damage to the floating blocks is prevented.

The invention relates to the technical field of marine environment numerical simulation, in particular to a near-shore typhoon wave refined simulation method based on terrain adaptive grids and parameter dynamic correction, and the method comprises the steps: obtaining basic data and simulation parameters of a target sea area, constructing a computational domain and an initial grid, and constructing a target sea area; the initial grid is an unstructured grid fused with multiple physical constraint factors; performing optimization processing on the initial grid based on a numerical stability criterion to obtain a final calculation grid meeting a calculation convergence requirement; establishing a bidirectional coupling model, and applying the final computational grid to the bidirectional coupling model; carrying out localization iteration calibration on key physical parameters of the bidirectional coupling model to obtain an optimal parameter set; and carrying out typhoon wave process simulation calculation and constructing a typhoon wave feature database by utilizing the final calculation grid and the optimal parameter set, and realizing high-precision simulation and prediction of the typhoon wave process by constructing an adaptive optimization grid, a bidirectional coupling model and a parameter localization calibration mechanism.

The invention relates to the field of offshore wind power generation equipment installation, and discloses an offshore wind power equipment transformer installation device which comprises a hoisting connector body composed of a hoisting plate, a hoisting rope mechanism, a traction steel wire rope, a butt joint mechanism, a first anti-falling mechanism and a second anti-falling mechanism. The hoisting connector body is used for connecting the transformer body for the offshore wind power equipment with a lifting hook of a hoisting device. The butt joint mechanism is arranged, and the butt joint mechanism is matched with the locking ring through the butt joint column, the T-shaped locking block and the locking ring, so that rapid connection with the transformer lifting lug is achieved; due to the oblique angle design of the butt-joint columns, the butt-joint columns can be conveniently inserted into the connecting holes, the T-shaped locking blocks are transversely limited to be matched with the locking rings to extrude the lifting lugs bidirectionally, a traditional rope knot or shackle fixing mode is replaced, operation time is shortened to be within 5 minutes from traditional about 30 minutes, lifting efficiency is improved, and the device is particularly suitable for operation in narrow spaces such as offshore operation platforms and tower barrels and in stormy wave shaking scenes. The device is suitable for efficient and safe installation of the transformer for offshore wind power equipment.

The invention relates to the field of marine floating bridges, and discloses a marine floating bridge floating island module which comprises a seabed pile foundation, the side wall of the top end of the seabed pile foundation is sleeved with a lifting lug a through a cable a, the surface of the top end of the seabed pile foundation is sleeved with a lifting lug b through a cable b, and floating bridge mechanisms are arranged on the surfaces of the lifting lug b and the lifting lug a. The platform can be quickly built at positions such as the sea surface so as to cope with different use environments. A storm-resistant stable system is constructed through a semi-cylindrical structure, a two-way mooring rope and gravity center adjustment, the curved surface contour of a semi-cylindrical floating plate can guide waves to flow along the side face of a plate body, front impact is avoided, wave impact force is dispersed, and the transverse swing angle is controlled within 5 degrees; the seabed pile foundation forms pull-down and side-pull two-way fixation through the mooring rope a and the mooring rope b, vertical movement is limited, horizontal drifting is restrained, and the module is prevented from being separated from a preset area; the gravity center of the sealed clean water bags in the water storage cavity can be flexibly adjusted by increasing and decreasing the number.

The invention discloses a forward modeling simulation method for a multidirectional sea wave induction electromagnetic field. The method comprises the following steps: expressing energy distribution of different propagation directions and frequency components through a spectral function; setting external environment input required by forward modeling according to the seawater depth and geomagnetic field parameters of the research area; after parameter setting is completed, electromagnetic response calculation is carried out on each frequency-direction sampling point; component response is called on a preset frequency set and a preset direction set, linear superposition is carried out by adopting a frequency direction correspondence method, and a total electromagnetic field is obtained; and outputting time sequences and frequency spectrum results of the wind wave induction electromagnetic field, the surge induction electromagnetic field and the mixed wave induction electromagnetic field, thereby providing a reference basis for noise analysis, background interference suppression and target signal identification in electromagnetic detection. According to the method, the limitation of a traditional model is broken through, the electromagnetic interference characteristics under the complex sea condition are represented more truly, and reliable support is provided for noise suppression and target recognition in electromagnetic detection.

The invention provides a sludge dewatering device for water conservancy river ecological management, and relates to the technical field of water conservancy project and river ecological management. The mounting bottom plate is mounted in ship body equipment, and the supporting frame is fixedly mounted at the upper end of the mounting bottom plate; the upper end of the supporting frame is of an inclined face structure inclining towards the lower portion of one side, and an inclined frame is fixedly installed on the inclined face structure of the supporting frame. A dewatering box with an upward opening end is fixedly mounted at the upper end of the inclined frame; a floating platform is arranged on one side of the mounting bottom plate and located in the water surface. A sludge mixing box is mounted at the upper end of the floating platform. The floating platform is in sliding fit with a hanging pin of the supporting frame through a movable strip hole in a connecting arm and is matched with a stable row, extending into water, at the bottom of the floating platform, so that the floating platform can adapt to water surface fluctuation, wind wave impact is effectively buffered, and a dynamic and stable working platform is provided for a sludge pumping box and a sludge mixing box; and continuity and reliability of mud pumping and mixing operation are ensured.

The invention relates to the technical field of water environment treatment and lake ecological restoration, and solves the technical problems that in the prior art, an underwater forest shadow area cannot be stably constructed, purification and inhabitation functions cannot be flexibly configured, and engineering quantitative design and long-term optimization cannot be achieved. In particular to a shallow lake underwater forest modularization inhabitation unit and a water function improving method thereof. The inhabitation unit is composed of a hollow hexagonal bottom bearing and anchoring base, a three-dimensional supporting framework, a plant inhabitation layer and an ecological function core block, and an inclined water-permeable wave blocking wing plate is arranged on the head wave side of the bottom bearing and anchoring base; an open grating structure with high aperture ratio is arranged on the back wave side, a dephosphorization, denitrification and inhabitation enhancing core block can be inserted and pulled out in the open grating structure, submerged plants are planted in a plurality of layers of planting baskets at the upper part, and a three-dimensional aquatic vegetation zone with directional hydrodynamic force regulation and control is formed. The shallow lake underwater forest can be stably constructed under the stormy wave condition, the water function is remarkably improved, and engineering construction of the shallow lake underwater forest and quantitative improvement of the water function are achieved.