8 results about "Rip tide" patented technology

The invention relates to the technical field of marine planting, and discloses a seaweed planting device for marine ecological restoration, which comprises a frame, a buoyancy device is arranged above the frame, an attachment plate is arranged in the frame through an adjusting mechanism, and the adjusting mechanism is used for adjusting the angle of the attachment plate. A distance measuring mechanism is arranged on the front side wall of the attachment plate, an anchoring device is arranged at the bottom end of the frame, the adjusting mechanism comprises a first pull rod connected into the frame in a sliding mode, a fluted disc is fixedly connected to the end, close to the attachment plate, of the first pull rod, and the fluted disc is connected into the frame in a sliding mode. Through the structural arrangement of the adjusting mechanism, the problems that the spatial position cannot be dynamically adjusted according to the illumination condition, the illumination of algae on the lower layer of the base plate is insufficient, the growth of the algae is influenced, meanwhile, the wave impact resistance of the attachment plate is poor, the disturbance of sea waves and strong water flow is difficult to resist, and algae seedlings are difficult to stably attach are solved.

The invention discloses a three-dimensional red tide drift risk early warning method and system based on set disturbance, and relates to the technical field of physical oceanography, and the system comprises an ocean data summarization module, a red tide outbreak evaluation module, a red tide underwater three-dimensional drift module, and a red tide water surface multi-parameter disturbance drift module. A red tide risk early warning module and a red tide visual product manufacturing module. Performing dynamic evaluation by combining a biological model structure set to obtain a red tide outbreak early warning result, performing calculation by adopting a three-dimensional floating dynamic equation to obtain an upward floating speed of the red tide, performing calculation based on multi-parameter disturbance to obtain a red tide drift path, and performing spatial overlay analysis based on a red tide potential coverage area to obtain a red tide hazard risk grade result. And a visual product is generated. According to the method, the whole-process and three-dimensional early warning of the red tide from underwater growth and floating to water surface drifting is realized, and the accuracy and decision support value of red tide risk forecasting are remarkably improved through wave-tide-flow-ecology coupling analysis.

This application discloses a method and system for assessing extreme environmental conditions in coastal engineering, relating to the fields of marine and coastal engineering technology. The method includes: establishing wave propagation deformation conversion relationships; performing quality control on multi-source wave-tide data; performing tidal level decomposition on the total water level time series; identifying multiple independent extreme wave-tide coupling events, extracting characteristic parameters to form a multi-dimensional extreme sample set, and establishing a joint distribution model; determining the target probability level and constructing an environmental profile with equal exceedance probabilities; selecting representative combined operating conditions, and using the wave propagation deformation conversion relationships to convert the representative combined operating conditions to nearshore control points to obtain design wave elements. This application, driven by multi-source wave-tide data, establishes a joint distribution model of wave height, period, and tidal level and constructs an environmental profile with equal exceedance probabilities, achieving quantitative determination of extreme design wave conditions with clear joint probability meanings, thus improving the scientific and economical nature of coastal engineering design.

The invention discloses an event-based flood-destroyed seawall armor block repair weight calculation method, which comprises the following steps of: determining typical typhoons according to optimal tropical cyclone path data, seawall completion time, armor block arrangement and a seawall front tide level process, and collecting multi-element collaborative observation data during the typical typhoons; constructing an astronomical tide-storm surge mathematical model and a typhoon wave mathematical model according to the typical typhoon, then correcting the two mathematical models by using multi-element collaborative observation data, and after correction, calculating the tide level in front of the embankment and scour corrected typhoon waves; designing a stable weight parameterization scheme of the armor block, obtaining a stable calculated weight based on the tide level in front of the embankment and typhoon waves, and determining an optimal scheme in combination with the actual weight of the armor block; the design wind speed is calculated according to the wind speed data of the weather station, the design tide level and the scour-corrected design wave are calculated based on the tide level data and the wind-wave-tide relation, and the repair weight of the armor block is obtained by adopting the optimal scheme. The method has a relatively high guiding effect on coast protection engineering design.

The invention provides a wave dissipation seawall structure based on ecological transformation and a construction method thereof, and belongs to the technical field of dam protection engineering. Comprising a seawall base, a supporting wall body and an upstream slope are fixedly arranged on the seawall base at intervals, a water passing groove is formed between the upstream slope and the supporting wall body, and an ecological planting area is arranged on the supporting wall body. When the seawall structure receives sea waves, small waves enter the guide channels on the upstream slope, large waves are shared by the wave absorbing blocks above the guide channels and the guide channels, water flow collides with each other in every two guide channels for primary energy dissipation, and part of kinetic energy is converted into kinetic energy for secondary energy dissipation through the electric power conversion mechanism in the water guide grooves. Water flow flows out of the water guide grooves and impacts on the impact plate, the energy dissipation assembly absorbs impact force borne by the impact plate for three times of energy dissipation, finally, the water flow flows back into the sea through the communication channel, the impact force of sea waves is effectively relieved, the wave spray caused by waves at the seawall is reduced, and the effect of effectively protecting the seawall structure is achieved.

The application discloses an event-based water-destroyed sea embankment facing block weight repair calculation method, which comprises the following steps: determining a typical typhoon according to tropical cyclone optimal path data, sea embankment completion time, facing block arrangement and embankment front tide level process, and collecting multi-element coordinated observation data during the typical typhoon; constructing an astronomical tide-storm surge mathematical model and a typhoon wave mathematical model according to the typical typhoon, and then correcting the two mathematical models by using the multi-element coordinated observation data; calculating the embankment front tide level and the typhoon wave corrected by scouring after correction; designing a facing block stable weight parameterization scheme, obtaining a stable calculation weight based on the embankment front tide level and the typhoon wave, and determining an optimal scheme in combination with an actual weight of the facing block; calculating a design wind speed according to meteorological station wind speed data, calculating a design tide level and a design wave corrected by scouring based on a relationship between the tide level data and the wind wave, and obtaining a facing block repair weight by using the optimal scheme. The method has a high guiding effect on coastal protection engineering design.

The application discloses an anchoring device for floating photovoltaics, which comprises a hollow pile with a plurality of through holes in the top, a counterweight module and a plurality of anchor ropes; the bottom of the hollow pile extends into the seabed and is fixedly connected with the seabed, and the top is located below the sea surface; the counterweight module is arranged around the outer wall of the hollow pile and is connected with the upper surface of the seabed; and the plurality of anchor ropes are arranged on the pile body of the hollow pile and are flexibly connected with the pile body. The anchoring device for floating photovoltaics can adapt to large deformation of wind, wave and tide, has remarkable anti-pulling effect, can prevent scouring, has good stability and effectively guarantees the safety of the floating photovoltaic system. Meanwhile, since the main components are all prefabricated parts, the installation difficulty is reduced, the problem of large offshore construction difficulty and low safety is solved, and since the hollow pile is clearly positioned, the construction progress is accelerated, and the anchoring device is suitable for large-scale offshore photovoltaic development.

The application relates to the technical field of marine planting, and discloses a seaweed planting device for marine ecological restoration, which comprises a frame, a buoyancy device arranged above the frame, an attachment plate arranged in the frame through an adjusting mechanism, the adjusting mechanism being used for adjusting the angle of the attachment plate, a distance measuring mechanism arranged on the front side wall of the attachment plate, an anchoring device arranged at the bottom end of the frame, and the adjusting mechanism comprising a first pull rod slidingly connected in the frame, one end of the first pull rod close to the attachment plate being fixedly connected with a gear disc, and the gear disc being slidingly connected in the frame. Through the structural arrangement of the adjusting mechanism, the problem that the spatial position cannot be dynamically adjusted according to the illumination condition, the illumination of the algae under the substrate is insufficient, the growth of seaweed is affected, the wave and tide impact resistance of the attachment plate is poor, the disturbance of the sea waves and strong water flow is difficult to resist, and the seaweed seedlings are difficult to stably attach is solved.