108 results about "Seabed sediment" patented technology

The invention relates to the technical field of a seabed substrate advanced detection device and method for a seabed mining vehicle, and provides a seabed substrate advanced detection device and method for a seabed mining vehicle, which can simultaneously obtain submarine topography and landform and detect multiple parameters of a seabed substrate. The deep sea detection system is matched with a mine car to ensure smooth proceeding of a rear mine car in deep sea bottom detection, and comprises a sea surface data processing system and a frame with the cross section in a structure shaped like a Chinese character'tian ', a master control device, a signal receiver and at least four detection modules arranged in a matrix are arranged on the frame, and the master control device is used for controlling the detection modules. The signal receiver is used for transmitting information of the detection module and the sea surface receiving device; the detection module comprises a side-scan sonar module used for rapidly obtaining the topography and landform in front, a transverse push toothed plate used for cutting into a soil body, a turbidity meter module used for measuring the concentration of suspended particles and dissolved matters in the seabed, and a pressing plate module used for obtaining the bearing capacity and the subsidence index of the seabed sediment.

The utility model relates to an electrical system for a submarine sediment acoustic in-situ measurement device, which belongs to the technical field of submarine measurement electrical control and comprises a shipborne part and an underwater part which are connected through a photoelectric composite cable. The shipborne part is used for controlling the work of the underwater part; wherein the underwater part comprises a plurality of modular units which are connected through standardized interfaces, and the modular units comprise a main control unit, an acoustic measurement unit, a power amplifier unit, a transducer unit, a hydrophone unit and a power supply unit. According to the electrical system for the acoustic in-situ measurement device for the submarine sediments, through modular design, the adaptability and universality of the electrical system are improved; and moreover, a worker can add corresponding units or modules according to measurement requirements, so that the expandability of the system is improved, and different measurement scenes and requirements are better met.

The invention discloses a natural gas hydrate generation accelerant containing amino acid and nano calcium carbonate as well as a preparation method and application of the natural gas hydrate generation accelerant, and belongs to the technical field of natural gas hydrates. The problems of low natural gas hydrate forming rate, low gas storage density, low natural gas recovery efficiency, poor environmental protection property and the like in the prior art are solved. The accelerant is obtained by taking a hydrophobic amino acid solution as a base solution, adding nano calcium carbonate into the base solution and adjusting or not adjusting the pH value. By regulating and controlling the type and the concentration of a base solution in the accelerant, the hydrate formation rate and the gas storage density are improved, and the induction time of hydrate generation is shortened; nanoparticles in the accelerant are small in particle size and large in specific surface area, so that disturbance and convective heat transfer of the accelerant are enhanced; in addition, the chemical components of the nanoparticles in the accelerant and the main component of the seabed sediment with a large amount of natural gas hydrate in the nature are calcium carbonate, the environmental risk is reduced, and the calcium carbonate and hydrophobic amino acid are wide in source and environmentally friendly.

Belonging to the field of marine resource exploration equipment, the invention relates to a portable pressure maintaining gravity sampler, which comprises an extraction hole, an empennage, a counterweight, a connecting piece, a control piece, a large spring, a control mechanism shell, a positioning block, a release pipe, a small spring, a spacer pin, a sliding pipe, a pressure maintaining pipe, a closed ring, a mandrel, a flap valve, a check valve ball, a sampling pipe, a one-way flap, a tool bit, a drain hole, a limiter and a pipe body. According to the design scheme, the sampler is provided, through the design of the control mechanism shell, the pressure maintaining pipe and the sampling pipe, a light-weight pressure maintaining structure is provided, and complex pressure compensation or a hydraulic system is not needed; in addition, a sealing and pressure maintaining device is optimized, the in-situ pressure of the seabed sediment can be stably maintained so as to guarantee the integrity of the sample, meanwhile, the operation process of the sampling process is simplified, the manufacturing cost and the fault risk are reduced, and the dual requirements of marine geological research, mineral resource exploration and other scenes for high-quality samples and efficient operation are met.

The invention belongs to the technical field of seabed exploration, and particularly relates to an anti-sloughing hole seabed drilling sampling device suitable for loose sediments, which comprises a suspension platform, a double-pipe isolation sampling assembly and a loading assembly, a group of brackets are uniformly distributed on the surface of the suspension platform; the double-pipe isolation sampling assembly comprises a supporting pipe on the outer layer and a sampling pipe on the inner layer; a group of guide rods are uniformly distributed at the top of the supporting pipe; the guide rod penetrates through the suspension platform and is in sliding connection with the suspension platform; the upper end of the guide rod is fixedly connected with a stress plate; the stress plate is hammered intermittently through the loading assembly, the supporting pipe is promoted to be inserted into the seabed sediment, then the supporting pipe can play a role in supporting and enclosing the surrounding sediment, the hole collapse phenomenon in the sampling process is prevented, then the sediment in the supporting pipe is collected layer by layer through the sampling pipe, stratified sampling operation is achieved, and the sampling efficiency is improved. And disturbance to the sediments in the supporting pipe can be reduced to the greatest extent in the operation process, so that an almost original sediment sample can be obtained.

The invention relates to a bionic rotifer preying wheel disc type composite underwater target collection device and method, the collection device comprises an underwater robot and a bionic collection head, and the underwater robot is provided with a high-definition camera, a foresight sonar, an adjustable highlight LED underwater lighting lamp and a seabed in-situ metal measurement sensor; the bionic collecting head is provided with a bionic roller wheel and a conveying pipeline; the conveying pipeline is of a Venturi tube type conveying structure, and bionic protruding structures are arranged on the surfaces of the bionic roller wheels. The bionic roller wheels are coaxially connected with rotating output shafts of the waterproof driving motors correspondingly, and the waterproof driving motors drive the bionic roller wheels on the two sides of the conveying pipeline to rotate and vibrate relatively. Disturbance on a seabed sedimentary layer and influence on a seabed ecological environment can be reduced, so that collecting mechanical parts are not easy to damage in operation, the service life is prolonged, and the safety and the accuracy are improved; seabed ocean current disturbance is reduced, and an acquisition path is accurately controlled; energy consumption is reduced, jamming is avoided, sampling efficiency is improved, and the application range is widened.

The invention relates to the field of seabed sediment classification mapping, and provides a seabed sediment classification mapping method based on shallow stratum profile data, which comprises the following steps: acquiring sensor data of a target seabed, including multi-beam topographic data, side-scan image data, seismic data and shallow stratum profile data; multi-dimensional acoustic-terrain-seismic features are constructed, acoustic feature matching is carried out on multi-beam terrain data and side-scan image data, seismic data are introduced, and an extended hierarchical model is constructed; constructing a preliminary submarine topography model diagram by using a spatial interpolation algorithm, repairing a preliminary missing region by using a generative adversarial network, generating a complete submarine topography model diagram, embedding multi-dimensional acoustic-topography-seismic features, and predicting a sediment migration trend; and generating a seabed substrate classification planar graph and a three-dimensional geological profile map, and performing seabed substrate classification mapping in combination with a sediment migration trend. According to the invention, the resolution and integrity of the submarine topography model can be significantly improved, and the dynamic classification map reflecting the current and future patterns is generated.

The invention discloses a high-pressure self-balancing type seabed sediment sampling bottle nitrogen charging anti-oxidation method, and belongs to the technical field of chemical analysis and material testing, and the method comprises the following steps: obtaining physical characteristic parameters of sediment in a sampling bottle; performing analysis and calculation according to the physical characteristic parameters, and determining initial nitrogen charging control parameters; filling nitrogen into the sampling bottle based on the initial nitrogen filling control parameter, and synchronously monitoring the pressure in the bottle and the pressure of the external environment to form a driving pressure difference; and a preset self-balancing exhaust valve is driven through the driving pressure difference, and residual gas is exhausted. According to the method, the initial nitrogen charging parameter is determined by firstly obtaining the physical characteristic parameters of the sediment, and then the driving pressure difference formed by nitrogen charging is used for driving the self-balancing exhaust valve to exhaust the residual gas, so that personalized, high-efficiency and high-reliability nitrogen charging anti-oxidation treatment can be carried out on different sediment samples.

The application discloses a kind of sea surface convergence zone parameter calculation method and system based on sound propagation loss, method includes: propagation loss acquisition step: according to horizontal sound velocity profile variation data, seabed topography variation data and seabed sediment parameter, propagation loss data is obtained by sound propagation model;Convergence path acquisition step: based on propagation loss data, convergence path data and convergence zone quantity parameter are obtained by constant false alarm processing technique and connected domain technique;Convergence zone center point acquisition step: based on convergence path data, the position of convergence zone center point is determined by constant false alarm technique;Convergence zone boundary acquisition step: based on the gradient variation characteristics of convergence zone center point position combined with propagation loss data, the range boundary of the range boundary of convergence zone center point position is determined, and the detection and identification of underwater acoustic field convergence zone under complex marine environment are realized by the application.

The present application relates to the technical field of deep-sea resource development, and specifically relates to a deep-sea low-disturbance mining robot control system, comprising: an information perception module for acquiring and transmitting multi-source sensing data; a central control module for receiving and processing the multi-source sensing data to generate coordinated control instructions; a motion and attitude adjustment module for receiving the coordinated control instructions to drive a piston-type variable buoyancy tank and walking feet to execute actions, and to adjust the overall buoyancy, attitude and walking state of the robot; a collection and storage and transportation operation module for receiving the coordinated control instructions to drive a suction mechanical arm and a mineral storage and transportation box to execute actions, and to collect and transport minerals. The present application improves the walking stability and operation adaptability of the robot in complex terrain, effectively prevents subsidence and attitude instability, combines a sand filtering structure and dynamic buoyancy compensation, reduces disturbance to seabed sediments, reduces turbidity current diffusion, and has environmental friendliness, and can perform long-term, continuous and stable high-efficiency mining operations in deep sea.

The deep-sea mining system comprises a mining device, a mining ship, a transfer device and a transport ship, the mining device comprises a walking assembly, a crushing assembly, a spray head assembly and a collecting assembly, the crushing assembly, the spray head assembly and the collecting assembly are all arranged on the walking assembly, the walking assembly is used for walking in deep sea, and the collecting assembly is used for collecting the spray head assembly. The crushing assembly is used for crushing the seabed sediments, the spray head assembly is used for spraying the crushed seabed sediments so that the crushed seabed sediments can be flushed into the collecting assembly, the mining ship is used for collecting the seabed sediments, and the transferring device is connected with the collecting assembly and the mining ship. The transport ship is suitable for floating on the sea surface, the mining ship is matched with the transport ship, and the transport ship can move on the sea surface relative to the mining ship, so that the submarine sediments on the mining ship can be transported through the transport ship. The deep-sea mining system has the advantages of low cost, high mining efficiency and the like.

The invention relates to the technical field of marine ecology monitoring, and discloses a marine ecology-based monitoring and early warning system, which comprises a monitoring terminal, a data transmission module for transmitting monitoring data acquired by the monitoring terminal to a data analysis and processing module, and an early warning module for performing early warning according to an ecological risk assessment result of the analysis and processing module, the early warning module is used for issuing early warning information in a grading manner; the monitoring terminal comprises a hydro-meteorological monitoring module and a water body environment monitoring module; the water body environment monitoring module comprises a water body monitoring unit, a sediment monitoring unit and an acquisition unit. According to the monitoring and early warning system based on marine ecology, the hydrometeorological monitoring module and the water body environment monitoring module are integrated, so that multi-dimensional monitoring data can be synchronously acquired, and comprehensive evaluation of marine ecological conditions is realized; and a box-type mud sampler for collecting seabed sediments and a water body collector for collecting water bodies with different depths are jointly arranged on a steel rope through the collecting unit, so that an efficient and synergistic collecting combination is formed.

1. The name of this design product: Deep-sea sediment long column sampler. 2. Purpose of this design product: used to extract seabed sediment samples. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses a marine sediment detecting and sampling device, and relates to the technical field of marine sediment sampling, the marine sediment detecting and sampling device comprises a sampling assembly, and further comprises a flow stabilizing assembly which is located at the bottom of the sampling assembly and used for reducing disturbance to submarine sediments when the sampling assembly rapidly descends; the distance sensor is used for monitoring the depth from the steady flow assembly to the seabed; the plugging assembly is arranged in the flow stabilizing assembly and is used for plugging the bottom of the sampling assembly and limiting the sampling assembly at the same time; and the hydraulic system is used for controlling the plugging assembly to release the limiting of the sampling assembly and controlling the plugging assembly to release the plugging of the sampling assembly when the distance sensor detects that the distance between the flow stabilizing assembly and the seabed is smaller than a preset value. Flow guide is realized under the action of the flow stabilizing hole and the flow guide plate, so that the sampling equipment quickly descends under the action of gravity, and turbulent flow caused by impact on seabed sediments is reduced.

The present invention provides a mining system comprising: a mining device, a mining vessel, a transfer device, and a transport vessel. The mining device comprises a traveling assembly, a crushing assembly, a nozzle assembly, and a collection assembly. The crushing assembly, nozzle assembly, and collection assembly are all mounted on the traveling assembly. The traveling assembly is configured to travel in the deep sea. The crushing assembly is configured to crush seabed sediments. The nozzle assembly is configured to spray the crushed seabed sediments so that the crushed seabed sediments are flushed into the collection assembly. The mining vessel is configured to collect the seabed sediments. The transfer device is connected to the collection assembly and the mining vessel, respectively, so that the seabed sediments collected by the collection assembly are transported to the mining vessel via the transfer device. The transport vessel is adapted to float on the sea surface. The mining vessel cooperates with the transport vessel and is movable relative to the mining vessel on the sea surface so that the seabed sediments on the mining vessel can be transported via the transport vessel. The mining system of the present invention has the advantages of low cost and high mining efficiency.

The application discloses a kind of monitoring instruments, including outer probe rod, pressure-resistant cabin, baffle, differential pressure sensor and temperature sensor;Baffle is arranged in the inside of the outer probe rod, baffle is used to divide the internal cavity of outer probe rod into first cavity and second cavity, and outer probe rod is used to insert seabed deposit;Pressure-resistant cabin is arranged at the top of outer probe rod, and circuit board is arranged in the inside of pressure-resistant cabin, differential pressure sensor is arranged in first cavity and is connected with circuit board, temperature sensor is arranged in second cavity and is connected with circuit board, differential pressure sensor is used to output differential pressure signal, and temperature sensor is used to output temperature signal;Circuit board is used to monitor seabed deposit according to differential pressure signal and temperature signal.The monitoring instrument provided by the application can realize differential pressure monitoring.

The application provides a seabed deposit mining method and relates to the technical field of ocean engineering. The seabed deposit mining method applies a multifunctional automatic deep-sea mining vehicle. The method comprises the following steps: placing the multifunctional automatic deep-sea mining vehicle in a mining area of a seabed deposit; collecting seabed deposit materials through a collecting mechanism; pushing the seabed deposit materials to a sieve plate and a transfer mechanism by a rake; removing the soil mixed in the seabed deposit materials through the sieve plate; transferring the seabed deposit materials to a crushing mechanism by the transfer mechanism; crushing, grinding and storing the seabed deposit materials in sequence by the crushing mechanism; and loading the seabed deposit materials into a bag by a loading mechanism. The multifunctional automatic deep-sea mining vehicle is used for mining operations of seabed deposits, realizes the collection, transfer, crushing and loading operations of materials (seabed deposit materials), greatly simplifies the mining operation and improves the mining efficiency.

The invention discloses a hard rock ditching operation robot for submarine pipe cable laying. The hard rock ditching operation robot comprises a self-adaptive rock breaking control milling, drilling and crushing mechanism and a combined water jet spraying mechanism, and the self-adaptive rock breaking control milling, drilling and crushing mechanism comprises a multispectral submarine sediment scanner, a shaft punching part and a self-propelled drill bit connected with the shaft punching part; the shaft punching part is used for applying impact perpendicular to a milling surface to the self-propelled drill bit; the multispectral seabed sediment scanner is used for scanning the sediment at the ditching position to determine the type of the sediment and adjusting the rotating speed and the impact frequency of the self-propelled drill bit according to the type of the sediment. The problem that the hard rock substrate seabed is broken and ditching is difficult is solved, the pipe cable is buried in the groove through hard rock ditching, the problem that the pipe cable is prone to damage due to the fact that the pipe cable is suspended on the surface of bed rock is avoided, and meanwhile the problem that cost is increased due to the fact that the pipe cable bypasses is also avoided.

The invention belongs to the technical field of marine geological exploration, and particularly relates to a seabed sediment classification method and system based on a side-scan sonar image, and the method comprises the steps: introducing an acoustic imaging physical mechanism based on a Lambertian reflection model, carrying out the inversion of acoustic parameters of seabed sediments, and revealing the cause of echo intensity from the physical level; meanwhile, a superpixel segmentation algorithm is combined, analysis units with consistent structures are formed in space, noise interference is effectively reduced, and the salt and pepper phenomenon in pixel-level classification is avoided; furthermore, multi-source fusion is performed on image features, reflection features and topographic features, and the precision, the spatial continuity and the physical interpretability of seabed sediment classification are remarkably improved by utilizing the complementary advantage of multi-dimensional information. The method is suitable for seabed sediment classification in a complex terrain environment. The invention also provides a non-transitory readable recording medium storing the program of the method and a system comprising the medium, and the program can be called through a processing circuit to execute the method.

The present application relates to a kind of pile foundation based on the erosion prevention device of bionic helical structure and construction method, pile foundation erosion prevention device, including pile basic body, the bottom end part of the pile basic body is buried in seabed, the base of the device is installed at the junction of seabed surface and pile foundation, several limiting support rods are installed around the pile basic body, and several limiting support rods are all laid perpendicular to base;Fixed sleeve is installed at the position of the bottom end of the pile basic body, and the top end of several limiting support rods is tightly clamped by fixed sleeve;With each limiting support rod as reference, one spiral rod is matched and set, the top end of the spiral rod is fixed with fixed sleeve, and several spiral rods are arranged in the form of circumference along the outside of the pile basic body to form a hollow cylindrical structure with the pile basic body as central axis, which expands outward in the middle;The present application aims to change the flow path and speed of water flow, thereby reducing the direct impact force of water flow on pile and the erosion effect on seabed sediment, not only the effect of erosion prevention is good, but also easy to install.

The embodiment of the invention discloses a statistical analysis method and system for a micro-plastic detection result of a marine sample, and relates to the technical field of marine micro-plastics. The method comprises the following steps: determining the position of a temperature spring layer and / or a salinity spring layer in a preset depth interval below the sea surface, so as to obtain a seawater sample at the position; determining detection methods corresponding to the ocean micro-plastic particles with different sizes according to the size information of the ocean micro-plastic particles determined from the seawater sample and the seabed sediment sample; and respectively detecting the marine micro-plastic particles based on the detection methods corresponding to the marine micro-plastic particles with different sizes to obtain component information of the marine micro-plastic particles, and carrying out visual display and analysis based on the component information. According to the technical scheme, the seawater sample is sampled according to the temperature spring layer and / or the salinity spring layer, the sample rich in more micro-plastics is obtained, and component identification of the marine micro-plastics is more accurate by combining multiple detection methods.

This invention discloses a portable sediment sampler with a multifunctional collection structure for shallow sea use. It includes a connecting cylinder with a T-shaped operating handle fixedly connected to its top. A connecting layer column is movably installed at the bottom of the connecting cylinder, and a sampling mechanism is fixedly installed at the bottom of the connecting layer column. The sampling mechanism comprises a vertical cylinder, a compression spring, a sediment sampling cylinder, a first slot, a second slot, and a folded cylindrical plate. The sampling mechanism also includes a sealing cylinder, a threaded ring, a filter cotton sheet, and a filter plate. This sampler can simultaneously sample seabed sediment and seabed water, and can separate the sediment from the seabed water. During use, the sampler can be fixed to the side plate of a small fishing boat using an N-type mounting bracket, an adjusting rod, and a pressure disc. Furthermore, during the deep-sea sampling process, the support mechanism effectively prevents the sampling mechanism from tilting. The sampler also has an anti-loss function.

The present application relates to the technical field of seabed sediment collection, and discloses a seabed surface layer sediment layered collection device, wherein the collection cylinder is composed of multiple segments in a splicing mode, and the inside of the collection cylinder is provided with multiple layered intercepting boxes. The collection cylinder is composed of multiple segments in a splicing mode, so that the collection depth of the collection cylinder can be adjusted according to actual needs. The splicing ring seat, limiting groove and limiting bolt are used to facilitate the quick combination and connection between multiple collection cylinders, so that the connection is stable, and the subsequent quick taking of samples is facilitated. By adjusting the length of the single-segment collection cylinder, the requirements of different sampling layer spacings in layered sampling can be met, so that the flexible application conditions are met. By arranging multiple layered intercepting boxes in the collection cylinder, the internal space of the collection cylinder is divided into multiple groups of collection cavities, so that the samples with different layer spacings can be stored separately in layers during layered sampling.

The invention relates to a seabed sediment sampler, in particular to a columnar sediment sampler with a detection function, an electric hydraulic rod is fixedly mounted in a columnar sampler main body, the top end of the columnar sampler main body is connected with a mounting box, and a pressure sensor is fixedly mounted on the outer wall of one side of the mounting box; a first rotating assembly is arranged on the outer wall of the mounting box, an illuminating lamp is connected to the first rotating assembly, a protection box is fixedly connected to the bottom end of the mounting box, a second rotating assembly is arranged at the bottom of the protection box, and a camera is connected to the second rotating assembly. According to the invention, the pressure of the seabed can be measured through the pressure sensor, the reaching depth of the columnar sampler can be calculated through the pressure, and the sampling environment can be shot through the camera, so that the columnar sampler can be used for surveying the sampling place when being used, and a worker can conveniently carry out subsequent data test on the sample.

The invention relates to the technical field of marine exploration equipment, and discloses a submarine sediment testing device based on underwater robot laying and recycling, which comprises an underwater robot, the underwater robot is connected with a laying and recycling mechanism, and the laying and recycling mechanism is used for laying and recycling a testing assembly and can test sediments. In the testing process, it can be guaranteed that the testing assembly vertically falls down and is inserted into the sediment, the overall weight can be increased through automatic water suction and drainage, the insertion depth in the sediment is increased, and the testing efficiency is improved; the overall size of the testing assembly is small, the testing assembly can be laid and recycled based on the underwater robot, laying and recycling efficiency is high, and testing of sediments at multiple positions on the seabed can be achieved; according to the testing device, a plurality of testing assemblies can be clamped and carried, testing at different positions is facilitated, the testing efficiency is improved, and the testing assemblies can be supplied during clamping.

This invention relates to an adaptive correction method for multi-beam backscattering based on statistical change point detection, belonging to the field of marine acoustic detection and seabed sediment information processing technology. The method includes acquiring multi-beam data and constructing a proxy signal; adaptively grouping the proxy signal sequence using a bisection change point detection algorithm; statistically processing the backscattering intensity data within each group according to the beam incident angle; smoothing the average angle response curve using a smoothing filter; unsupervised partitioning based on curvature and clustering; and constructing a piecewise angle response reference model, using this model to calculate the correction value. This invention effectively weakens the central highlighting, edge attenuation, and striped structure caused by angle response effects, reduces the block effect or mosaic phenomenon common in fixed window methods, and effectively weakens the systematic correlation between backscattering intensity and incident angle, providing a more stable and reliable data foundation for subsequent seabed sediment classification, seabed geomorphological identification, and related marine survey applications.

According to the submarine mining vehicle walking device, the sliding plate devices are arranged in front of the two sets of crawler belt devices respectively, the sliding plate devices are installed on a mining vehicle through the installation supports and the cushioning devices, and the sliding plate devices conduct pre-compaction on submarine sediments so as to avoid excessive sinking and slipping of the crawler belt devices; the stability of the mining vehicle in the deep sea soft soil environment can be effectively improved, disturbance to seabed sediments is effectively reduced through the design of the sliding plate part, generation of plume is reduced, and the benthic organism habitat in the seabed ecological environment is effectively protected; the method adapts to complex geological environments.

The application provides a kind of cast-off seabed sediment acoustic property in-situ measuring instrument, belongs to geophysical prospecting equipment technical field, by cast-off part and floating part two parts composition.Casting-off part includes acoustic probe, counterweight and fuse separation mechanism, realize the sinking and contact seabed of instrument;Floating part includes battery cabin, fuse cabin, electronic cabin and buoyancy module, for control, data acquisition and floating.Acoustic probe is installed with receiving transducer, counterweight provides the gravity required for sinking, fuse separation mechanism realizes the separation of cast-off part and floating part.Battery cabin provides power, fuse cabin has fuse, electronic cabin includes electronic devices, underwater wet plug connector and the like.Buoyancy module controls the sinking posture and data transmission in the process of floating of instrument through tail wing and antenna.The measuring instrument solves the problems that existing cast-off measuring instrument cannot measure seabed sediment acoustic property, sinking process is unstable and floating separation is unreliable.

This invention discloses a biomimetic anchoring device based on a double-helix structure and an active adhesion mechanism, belonging to the technical field of biomimetic and marine engineering mooring equipment. Addressing the shortcomings of existing deep-water mooring anchors, such as large soil disturbance and easy failure of passive pull-out resistance, this invention provides a biomimetic anchoring structure adapted to complex seabed sediments. The device includes a rigid body, double-helix blades, and an active adhesion triggering mechanism. The rigid body consists of a solid bullet head, a central oval hollow structure, and a top conical structure. The double-helix blades adopt a variable pitch and variable diameter design, with evenly distributed grooves on the surface. The active adhesion triggering mechanism includes an anchor ring and an anchor ring piston structure, with a built-in drive motor and intelligent sensing and control module in the center. The device achieves low-disturbance penetration through double-helix micro-screwing and kinematic matching. Active adhesion is triggered under tension, forming a deep mechanical interlock and high-pressure consolidated soil crust with the soil, significantly improving pull-out bearing capacity. It is suitable for complex seabed sediments such as soft mud and gravel mixtures.

This invention discloses a subsea pipeline scour protection device, belonging to the field of subsea pipeline protection technology. The device includes a concrete base and a connecting part comprising a sleeve and a mounting base, the mounting base being connected to the sleeve and having a ring structure; two flow guides symmetrically arranged on both sides of the central axis of the sleeve, each including an arc-shaped guide plate and a counterflow plate. A gap is left between the arc-shaped guide plate and the outer wall of the sleeve, the thickness of the first end of the gap facing the flow-facing side of the sleeve being greater than the thickness of the last end facing the flow-trailing side of the sleeve; the counterflow plate is located on the flow-trailing side of the sleeve and connected to the sleeve, and has an arc structure. The counterflow plate is used to guide the water flow discharged from the last end of the gap to flow towards the side away from the central axis of the sleeve. This subsea pipeline scour protection device can weaken the ability of negative pressure eddies to entrain sediment, prevent the seabed sediment from being eroded, and prevent the concrete base from sinking due to suspension.