11 results about "Coastal erosion" patented technology

The invention provides a coastal erosion rate prediction method, and belongs to the technical field of coastal erosion, and the method comprises the steps: building a three-dimensional seabed grid model, solving a hydrodynamic field through depth average simplification and GPU parallel calculation, and calculating sediment flux distribution based on shear stress discrimination and a high-order windward format. Outputting an erosion mode category and a local erosion strength coefficient by using a coastline erosion feature recognition model comprising a Josephh ring screening layer and a self-organizing mapping projection layer, starting adaptive grid encryption when the local erosion strength exceeds a threshold value, and calling a corresponding parameter set according to an erosion mode to calculate a seabed elevation change and a coastline erosion rate; and a wave energy spectrum reconstruction algorithm is adopted to generate future wave sequence cycle prediction, so that the technical problem that calculation precision and calculation efficiency are difficult to consider in coast erosion rate prediction under a complex wave power condition is solved.

The present invention highlights the use of an innovative submersible structure made of concrete enriched with dead algae to promote marine biodiversity. This biodegradable material ensures better integration into aquatic ecosystems while providing a sustainable habitat for marine organisms. Furthermore, the integration of modern technologies such as sensors, sounders, cameras, GPS, modems, and underwater drones is highlighted in both texts. These tools enable real-time monitoring of artificial reefs, ensuring precise tracking of changes in marine habitats and local ecosystems. This monitoring ensures not only effective management of marine ecosystems but also enhanced protection against threats such as coastal erosion. Finally, both sections agree on the environmental and economic benefits of the project. In addition to promoting marine conservation, this invention paves the way for sustainable activities, including ecotourism, while emphasizing ecological sustainability and technological innovation. The project thus illustrates a holistic approach to addressing the environmental challenges linked to the degradation of marine ecosystems. The project represents a significant step forward in the management of marine ecosystems thanks to the combination of modern technological solutions and innovative, eco-friendly materials. By combining biodegradable artificial reefs with advanced monitoring devices, this solution offers an integrated approach to restoring marine biodiversity, protecting coastlines, and promoting sustainable activities. It represents an exemplary model of responsible and technological development, meeting current environmental conservation needs while offering viable economic opportunities.

The invention provides a coastal erosion prediction method and system based on adaptive STL decomposition and CNN-LSTM, and the method comprises the steps: obtaining the elevation scatter data of a coastal zone region in a specified time period, and constructing a three-dimensional spatio-temporal data set according to the elevation scatter data; subsequence data is extracted from the three-dimensional spatiotemporal data set through a specified sliding time window for calculating the window length, a seasonal stability index value is calculated according to the subsequence data, and the seasonal stability index value is converted into a corresponding adaptive seasonal window length according to a preset mapping relation; performing STL decomposition processing on the three-dimensional spatiotemporal data set in combination with the adaptive seasonal window length to obtain a seasonal item sequence, a trend item sequence and a residual item sequence; and performing elevation value prediction on the seasonal term sequence, the trend term sequence and the residual term sequence based on the trained CNN-LSTM combination model to obtain a final coast erosion prediction result. According to the method, the accuracy of coastal zone space-time erosion feature prediction can be improved.

The invention discloses a seabed sediment starting flow velocity measuring device and method. The device comprises a testing groove, a limiting groove used for fixing the testing groove to prevent the testing groove from moving in the experiment process and a propelling motor used for driving the testing groove to move up and down. The method comprises the steps that the limiting groove is pressed into the seabed sediment to be measured, and the motor is propelled to enable the testing groove to be downwards inserted into the seabed sediment to a preset depth; the speed of water flowing into the experiment module is gradually increased, and when the measured turbidity of the water body reaches a preset index, the water body is sampled to test the particle size of the sediment in the suspension; the propulsion motor drives the test groove to penetrate downwards for a sampling depth interval, and a new round of test sampling is carried out; and the downward penetration distance of the test groove reaches a preset value. According to the invention, in-situ experiments can be directly carried out on undisturbed seabed sediments, hydrodynamic data required by restart after sediment deposition can be obtained, and accurate data can be provided for research on marine sedimentology, coast erosion and protection, delta settlement and the like.

The invention discloses a seabed sediment property multi-parameter in-situ testing device and method. The device comprises an annular water tank with an opening in the bottom, annular horizontal operation platforms are arranged on the inner side and the outer side of the annular water tank, a wave current generating device is installed below an inner annular track, a water seepage supplementing device is arranged on the outer side of the annular water tank, a plurality of water intakes arranged up and down are formed in the outer side wall, and a hanging device is arranged at the top of the annular water tank. The method comprises the following steps: pressing the bottom of the device into sediments, photographing the inside and measuring topography, injecting water into the annular water tank to a preset height, simulating the erosion effect of a hydrodynamic environment on the sediments through the wave current generation device, simultaneously obtaining the permeability characteristics of the sediments in the water tank in an experiment process, and emptying water and silt when the experiment is finished. And photographing and topographic survey are carried out on the interior again. According to the invention, an in-situ experiment can be directly carried out on undisturbed seabed sediments, the starting, carrying and redeposition characteristics of the sediments after deposition can be obtained, and accurate data support is provided for research of marine sedimentology, coast erosion and protection, delta settlement and the like.

The present application provides a kind of based on unmanned aerial vehicle image's coast erosion monitoring method, belong to coast erosion monitoring technical field, the present application is by in the space and time reference control network of coastal zone monitoring region layout, adopts overall adjustment strategy to simultaneously enter unified coordinate system with multiple time phase image and is registered, utilizes octree space index organization point cloud data and extracts standard coast line position in combination with tide level-coast line response model, changes feature of coast line form is identified by persistence topological analysis, adopts hogge decomposition to reveal erosion driving force direction, topographic feature is input embedded into sediment transport physical constraint, and artificial intelligence prediction model outputs erosion rate field, based on the voxel grid method, calculates erosion volume and according to the erosion response adjustment function value dynamic adjustment sediment discharge flux correction coefficient, establishes multi-dimensional early warning index system to realize risk grade discrimination, solves the technical problem that multiple time phase coast erosion monitoring data registration accumulates large error and leads to the low precision of erosion change amount calculation.

1. The name of the design product: coast erosion prevention block. 2. The use of the design product: preventing the coast where the product is placed from being eroded by seawater and sand loss, and forming a habitat for seaweed and various underwater fish. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

A pre-cast concave dome device mitigates shoreline, river-bank, or lake-edge erosion. The dome approximates the outer quarter of a sphere and is cast from reinforced concrete with a wall-thickness gradient, heavier adjacent the base and lighter near the apex, to create integral ballast. An apex vent opening, subdivided by converging radial reinforcement, is dimensioned to admit ambient water and suspended sediment while excluding large organisms. After installation in shallow water, incident waves are redirected and dissipated by the curved exterior; sediment entering through the vent settles inside the dome, progressively increasing mass and anchoring the structure. Multiple domes can be arranged in staggered rows or layered arrays to tailor attenuation performance. Methods of deploying the domes and systems of plural domes disposed in offset rows are also disclosed.

The invention discloses a composite ecological seawall structure and a layout method thereof, and belongs to the technical field of coast engineering. The structure comprises a dam body, a foot protection wall is arranged on the upstream side of the dam body, a planting layer and a rubble layer are arranged between the foot protection wall and the dam body, a reinforcing assembly is embedded in the planting layer, a first buffer slope and a wave-resistant platform are arranged on the top of the planting layer, an ecological protection assembly is laid, ecological vegetation is planted on the ecological protection assembly on the wave-resistant platform, and a second buffer slope is arranged on the top of the rubble layer. The ecological protection assembly comprises a grating protection plate or a hexagonal porous protection plate and a filling block, and adjacent assemblies are connected through a connecting block. The dam body comprises a core wall piled by bentonite, a barrier layer is arranged on the surface of the core wall, and a dam shell poured by concrete is arranged outside the core wall. The reinforcing assembly comprises an anchor rod and a blocking rod, and one end of the anchor rod is fixed in the dam shell. The structure is stable, the good ecological property is achieved, wave impact can be effectively relieved, coast erosion is prevented, and meanwhile coast ecological system recovery is promoted.

The invention provides a coast erosion risk multi-dimensional evaluation method based on machine learning. According to the method, a multi-dimensional and comprehensive evaluation index is adopted as an erosion factor, a coast erosion grade is adopted as a grading label to evaluate the severity of coast erosion, and a nonlinear mapping relation between the erosion factor and the coast erosion grade is established by utilizing machine learning; the coupling influence of interaction between wave energy and human activity factors on coast erosion is fully considered, and the accuracy and the refinement degree of risk judgment are effectively improved. The method further provides a comprehensive model precision evaluation method based on three indexes of mean absolute error, weighted Kappa coefficient and high-risk missing report rate, the optimal machine learning model can be screened out to be suitable for the current scene, and the accuracy of the model is further improved.

The invention provides a check block provided with a sand screen and used for preventing coast erosion and sand loss. The stopper provided with the sand screen and used for preventing coast erosion and sand loss is characterized by comprising a stopper main body, the cross section of the stopper main body is in a shape which becomes narrower from the lower part to the upper part and becomes narrower from the lower part to the upper part, and a water through hole for enabling seawater to flow in and out is formed in the front-back direction in a penetrating manner; the water through holes are formed at specified intervals in the length direction; and a sand screen which is integrally formed on the stopper main body on the inner side of the water through hole, and which captures the sand on the coast side by intercepting the outflow of the sand when the seawater flows out through the water through hole.