52 results about "Seabed sediment" patented technology

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 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 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 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.

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 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.

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.

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.

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.

The invention belongs to the technical field of deep sea in-situ measurement, and particularly relates to a macro biological metabolism in-situ measurement device and method, and the device comprises an underwater remote control robot and a measurement unit carried by the underwater remote control robot. The core of the measuring unit is a multi-cabin measuring module, the multi-cabin measuring module comprises an experiment cabin with an open bottom and capable of being inserted into seabed sediments, a rotten food contrast cabin and an environment contrast cabin, and environment background interference is effectively eliminated through the three-cabin contrast design. The device is integrated with a cabin door opening and closing module, so that the cabin can be quickly sealed after target macroorganisms enter the experiment cabin; the dissolved oxygen monitoring module is used for synchronously monitoring the change of dissolved oxygen in each cabin in real time; the sediment sampling module and the water body sampling module can synchronously collect sediment and water body samples after the measurement period is ended. Through cooperative work of multiple modules, in-situ and stress-free trapping and long-term real-time monitoring of deep-sea macroorganisms and synchronous collection of various samples are achieved, and the accuracy and reliability of metabolic rate measurement data are remarkably improved.

This invention discloses a biomimetic coral reef-based anti-scour device and method for offshore wind power foundations with monitoring capabilities. The device includes a biomimetic coral reef body, fixing components, an ecological reinforcement layer, and a monitoring component. The biomimetic coral reef body has a radially porous branched structure, surrounding the outer perimeter of the offshore wind power foundation, effectively reducing water scour and seabed sediment loss. The fixing components include anchor piles and connecting ropes. The anchor piles are anchored to the seabed, and the connecting ropes connect the anchor piles to the roots of the main body branches, achieving stable installation of the main body. The ecological reinforcement layer covers the outer surface of the main body, improving the device's ecological compatibility. The monitoring component is located at the main body branches and the seabed, enabling real-time monitoring of the scour status of the wind power foundation and the surrounding seabed. This device has strong scour resistance, excellent ecological adaptability, and can dynamically monitor the protective effect, ensuring the long-term stable and safe operation of the offshore wind power foundation.

The application provides a crawler soil interaction test device applied to a deep-sea mining vehicle, comprising a test bench, a simulated sediment unit, a simulated crawler device, a horizontal movement mechanism, a vertical movement mechanism and a rotary movement mechanism; the simulated sediment unit is placed at the bottom of the test bench, and the simulated crawler device is arranged at the lower part of the test bench and is in transmission connection with the horizontal movement mechanism, the vertical movement mechanism and the rotary movement mechanism. The application of the crawler soil interaction test device applied to the deep-sea mining vehicle can realize the experimental research on the interaction between the deep-sea mining vehicle and the seabed sediment, and can obtain the motion response of the crawler plate of the deep-sea mining vehicle under different working conditions, the disturbance to the flow field, the generation, diffusion and settlement of the plume and other key technical researches, thereby providing a technical basis for the development of the deep-sea mining vehicle.

The present application belongs to the technical field of marine geological exploration, and particularly relates to a seabed sediment classification method and system based on side-scan sonar images. By introducing an acoustic imaging physical mechanism based on a Lambertian reflection model, the inversion of acoustic parameters of seabed sediments can reveal the causes of echo intensity from a physical level. Meanwhile, combined with a superpixel segmentation algorithm, a structure-consistent analysis unit is formed in space, effectively reducing noise interference and avoiding the salt-and-pepper phenomenon in pixel-level classification. Further, multi-source fusion of image features, reflection features and terrain features is carried out, and the complementary advantages of multi-dimensional information are utilized, so that the precision, spatial continuity and physical interpretability of seabed sediment classification are significantly improved. The method of the present application is suitable for seabed sediment classification in complex terrain environments. The present application also provides a non-transitory readable recording medium storing a program of the method and a system comprising the medium, and the program can be called by a processing circuit to execute the above method.

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 utility model relates to a carbon dioxide hydrate carbon sequestration micro-fluidic experimental device which comprises a pressure-resistant micro-fluidic hydrate reaction system, a micro-fluid injection and pressure control system, a pressure and temperature real-time display system and a gas introduction system, the pressure-resistant micro-fluidic hydrate reaction system comprises a pressure-resistant micro-fluidic chip, a tablet and a confining pressure kettle, the pressure-resistant micro-fluidic chip is fixed in the confining pressure kettle through the tablet, the pressure-resistant micro-fluidic chip is a glass micro-fluidic chip with four injection holes, the confining pressure kettle is provided with four gas-liquid channels, the four injection holes correspond to the four gas-liquid channels, and the four gas-liquid channels are communicated with the pressure-resistant micro-fluidic chip. The four gas-liquid channels comprise three injection channels and a liquid outlet channel. The gas-liquid two-phase displacement flow in the hydrate can be realized so as to achieve a better gas-liquid mixing ratio, and the simultaneous injection of liquid and gas is realized through multiple channels, so that the device is more suitable for a complex environment in seabed sediments, and the diversity and authenticity of an experiment are improved.

The invention discloses a seabed erosion and deposition risk assessment method and device. The method comprises the following steps: acquiring underwater topographic data, hydrological observation data and seabed sediment data of an engineering sea area; according to the hydrological observation data and the underwater topographic data, calculating to obtain a hydrodynamic condition by utilizing a tidal current numerical model and a wave numerical model; wherein the hydrodynamic conditions comprise tidal flow velocity, tidal cycle, wave height and wave cycle; inputting seabed sediment data into the trained sediment starting model, and outputting to obtain sediment starting conditions; wherein the sediment starting condition comprises a starting flow rate and a starting wave height; and carrying out risk grade division on the engineering sea area according to the underwater topographic data, the hydrodynamic condition and the sediment starting condition to obtain a seabed erosion and deposition risk assessment result. According to the seabed erosion and deposition risk assessment method and device provided by the invention, the accuracy of seabed erosion and deposition risk assessment is improved, the risk grade index is clearly quantified, and engineering practice can be directly guided.

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.

This invention discloses a visualization experimental device and method for multiphase carbon dioxide sequestration in sediments under hypergravity conditions. The visualization experimental device includes a central controller, a hypergravity centrifuge, a sediment carbon dioxide sequestration simulation mechanism, and an image acquisition mechanism. The sediment carbon dioxide sequestration simulation mechanism and the image acquisition mechanism are both housed in the same basket of the hypergravity centrifuge, with a counterweight installed in another basket of the hypergravity centrifuge. This invention utilizes the hypergravity environment generated by the hypergravity centrifuge to simulate the stress field of seabed sediment samples in the same way as the actual target reservoir in an indoor simulation experiment. Furthermore, the image acquisition mechanism allows for real-time observation of the phase transformation process of the target reservoir and the uplift or subsidence behavior of the seabed sediment surface through a viewing window. Compared to conducting exploratory experiments in the deep-sea environment, this method is lower in cost, less difficult, has higher fidelity, and is repeatable.

The utility model discloses an underwater sediment monitoring technology, and aims to provide an automatically-released seabed sediment in-situ monitoring device which is characterized by comprising an overwater floating body part and a sediment in-situ monitoring integrated part, the overwater floating body part comprises a floating body base, a solar charging panel, a winch unit, an upper cabin unit and an antenna; the sediment in-situ monitoring integrated part comprises a gravity counterweight base, a buffer plate, a lower cabin unit, a floating ball, a support frame, a cylinder, a plurality of sensors and a conical head; compared with the prior art, the device is divided into the water floating body part and the sediment in-situ monitoring integrated part, so that the technical field of modularized underwater sediment monitoring and function decoupling are realized; the method is suitable for use.

The transformation of seabed sediments into organic sludge is a serious problem, both in improving the water environment of enclosed sea areas through sediment improvement and in river dredging as a flood control measure. Japan's organic sludge disposal sites are controlled facilities, and their remaining capacity is becoming critical. Constructing new disposal sites requires enormous project costs and construction time. [Solution] The solution of this invention involves forming a subsoil improvement layer on the seabed by consolidating the surface layer of the organic sludge using a rapid vacuum consolidation method, thereby increasing its density and strength, and stabilizing it on the seabed. Substances that cause water pollution in the subsoil are forcibly dissolved by consolidation wastewater to form an impermeable improved soil layer, which then seals in the organic sludge below. Meanwhile, the wastewater containing pollutants is properly treated. By forming an even more effective impermeable improved soil layer instead of permeable sand capping, a sustainable and healthy aquatic environment is restored without the need for sand capping materials or the generation of dredged soil.

This invention relates to a method and system for in-situ identification of seabed sediments based on dual-source differential vibration characteristics. The method includes: simultaneously acquiring vibration signals at the power source location and the location of the working component of the engineering equipment; using the vibration signal acquired at the power source location as a reference signal and the vibration signal acquired at the working component location as a hybrid response signal; constructing a dual-source differential correction model to obtain a correction signal; extracting multidimensional sediment vibration characteristics from the correction signal to characterize the dynamic response of the sediments; and using a sediment category identification model based on the multidimensional sediment vibration characteristics to identify the seabed sediment category in situ. This invention achieves continuous in-situ identification of seabed sediments without altering existing seabed drilling, penetration, or piling operations, thereby providing reliable sediment information support for engineering activities such as seabed landslide identification and risk assessment, seabed resource exploration, and seabed infrastructure construction.

The invention discloses a seabed sediment sample separating device which comprises a first fixed sample module and a second fixed sample module which are used for horizontally bearing and fixing sediment samples; the precise sample separation module is arranged between the first sample fixing module and the second sample fixing module and is used for automatically conveying, drilling, cutting and separating the samples; the sample collecting and packaging module is arranged below the precise sample separating module and is used for automatically collecting, bagging, sealing and marking information of the separated sample sections; wherein the first fixed sample module, the second fixed sample module, the precise sample separating module and the sample collecting and packaging module are detachably connected, dismounting and mounting are convenient, and the device achieves full-process automation and integrated treatment of seabed sediments from pore water extraction to sample segmentation and packaging; the device has the advantages of high sample separation precision, good sample fidelity, high portability and high operation efficiency.

The invention belongs to the technical field of deep sea mineral resource development equipment, and discloses a multi-body-section deep sea bionic sectional type mining robot which comprises a sectional type main body, a multi-foot bionic walking module is installed at the bottom end of the sectional type main body, and the sectional type main body comprises a head end collecting section, a plurality of middle conveying sections and a tail discharging section which are sequentially connected in series; and the conveying assembly comprises a conveying storage piece and a collecting piece, the collecting piece is installed at the front end of the collecting section at the head end, the conveying storage piece is arranged in the sectional type main body, the collecting piece is used for collecting ore and conveying the ore into the sectional type main body, and the collected ore is conveyed and stored into all the sections through the conveying storage piece in a relay mode. The tail unloading section is in butt joint with external recovery equipment for unloading; and the connecting pieces are arranged in the sections respectively, and every two adjacent sections are connected through the corresponding connecting piece. According to the invention, disturbance to seabed sediments is reduced, the problem of cross-segment material conveying is solved, and high trafficability and stability in a deep sea thin and soft substrate environment are realized.

The utility model discloses a multi-mode submarine cable ditching device which comprises a main body frame, an electric propeller is arranged on the main body frame, a seabed walking device, a movable cart and two injection devices are arranged at the bottom of the main body frame, and the two injection devices are symmetrically arranged at the bottom of the main body frame. The movable cart is arranged above the two injection devices and is movably connected with the two injection devices; the electric propeller is used for driving the submarine electric ditching device to sail in water, and the submarine walking device is used for driving the submarine cable ditching device to walk on the submarine surface; the movable cart is used for adjusting the distance between the injection arms of the two injection devices; and the two injection devices are used for shearing seabed soil in a mode of injecting high-pressure liquid to form a cable trough with a corresponding width. The device has the universality of operation with different trenching widths and the universality of operation with different seabed sediment hardness, the operation efficiency and safety are improved, and the cost and the risk are reduced.

The invention discloses a deep-sea sediment enclosure device for in-situ culture of microorganisms. The device comprises core components such as an enclosure main body, a four-channel balanced timing liquid injection mechanism, a trigger type door control mechanism, a PLC (Programmable Logic Controller) control system, a liquid injection needle disc and a nutrient source cabin. In the device lowering stage, the liquid injection needle disc penetrates into seabed sediments under the action of gravity, and when the surfaces of the sediments make contact with the trigger ring, the telescopic mechanism is triggered to ensure that the liquid injection holes are accurately positioned at the preset depth; in the in-situ experiment stage, the PLC control system controls the four-channel balanced timing liquid injection mechanism to inject different nutrient substances into the surface layer and the deep layer of the sediment layer by layer, and the trigger type gating mechanism automatically starts the gating mechanism to sample when detecting that the sampling device approaches. After the preset culture time is reached, the device releases the balancing weight and floats up by virtue of the buoyancy of the floating body material to finish recovery.