835 results about "Stern" patented technology

A marine propulsion system includes a first propulsion device that is steerable and located at a stern of a hull, a second propulsion device that is steerable and located in front of the stern, a controller configured or programmed to include an obtaining unit to obtain information about a propulsion force of the first propulsion device in forward and backward directions, and information about a propulsion force of the second propulsion device, a determination unit to determine whether to cause the first propulsion device during a lateral motion of the hull to generate a propulsion force in a direction in a first range including a component in the forward direction, or to generate a propulsion force in a direction in a second range including a component in the backward direction based on the obtained information, and a storage to store a content determined by the determination unit.

The invention provides an underway ship draft detection method, system, medium and equipment. The method comprises the following steps: acquiring laser point cloud data and image data of an underway ship; extracting an instant feature surface of the underway ship, comparing the instant feature surface with typical feature surfaces of various typical ship types, and selecting similar typical ship types; marking the side board part of the underway ship according to the side board part on the typical characteristic surface, and separating a point cloud set of the side board part; calculating the head freeboard height, the middle freeboard height and the tail freeboard height of the side broadside of the underway ship to obtain the freeboard height of the underway ship, and calculating the confidence coefficient; on the basis of the image data, identifying a waterline of the on-board ship so as to calculate bow, midship and stern drafts and confidence coefficients, and obtaining an initial draft; acquiring static structure data of the underway ship; according to the method, the laser point cloud data and the image data are used, so that the final draft of the underway ship can be accurately calculated.

The invention relates to the technical field of ships, in particular to a stern-direction icebreaking structure and a ship, the stern-direction icebreaking structure comprises two ice pressing appendages, the two ice pressing appendages are oppositely arranged in a spaced mode, the ice pressing appendages are fixedly arranged at the lower end of the stern, and inclined ice pressing structures are formed on the sides, away from the bow, of the ice pressing appendages; the inclined ice pressing structure is inclined downwards in the direction from the stern to the bow; the two rudder blades and the two ice pressing appendages are arranged in a one-to-one correspondence mode, and the rudder blades are rotationally arranged on the lower end faces of the ice pressing appendages. According to the invention, the stern sailing icebreaking capability of the ship can be obviously improved, and the power can be reduced.

The invention provides a flow guiding device of a ship propeller and a ship. The flow guide device comprises a plurality of guide vanes, the guide vanes are fixedly connected to the stern of the ship in the circumferential direction of the propeller, and the guide vanes are arranged at different positions in the axial direction of the propeller. The guide vanes are arranged at different positions in the axial direction of the propeller, so that the stress borne by the flow guide device is reduced; by limiting the circumferential length of flow guide, the resistance borne by the flow guide device can be reduced on the premise that the stability of the structure is improved. The ship stern and the flow field around the propeller are improved, the propelling efficiency of the propeller is improved, and the pressure at the blade backs of the propeller blades can be increased, so that the stress of the propeller is increased, and the thrust component is increased accordingly; the flow field pressure at the guide vanes outside the guide wheel can be reduced, so that the flow velocity of the flow field is increased, and the propeller efficiency is improved.

The invention relates to the technical field of remote sensing image ship motion, and discloses a wake matching-based ship motion parameter estimation method, which comprises the following steps of: constructing a ship wake model comprising an infrared sea surface model, a ship wake height field and a ship wake temperature field; setting multiple navigational speeds, multiple navigations and multiple sea condition parameters by using the model to generate a ship wake infrared image, and constructing a ship wake database; a deep learning convolutional neural network and a multi-task loss function are adopted to extract a wake to be estimated; and constructing a multi-stage image matching model based on the feature point extraction module, the feature vector description module and the feature point matching module, and matching the database and the batch to-be-estimated trails by using the multi-stage image matching model. According to the method, the infrared sea surface model mixedly calculates two sea surfaces, so that the repeatability of the sea surfaces is reduced while the authenticity is ensured; by simulating the wake temperature field and the wake height field, the authenticity of the wake is improved, the constructed wake data set can be reused, and efficient estimation of ship motion parameters is realized.

The utility model provides a multi-laser radar fusion ship loader non-blind area measuring system, which relates to the field of laser radar measurement and comprises a ship body, a multi-laser radar fusion measuring device, a ship loader and a mechanical arm. The mechanical arm clamps the upper end of the multi-laser radar fusion measurement device; the mechanical arm is movably arranged on the ship loader, the moving route of the mechanical arm is from the bow to the stern of the ship body, and the mechanical arm is always located on the center line above the ship body. According to the utility model, the two long-distance laser radars are longitudinally installed, the high-precision holder is equipped, and the holder rotates at a low speed and at a small angle, so that dynamic splicing of scanning data is realized, accurate point cloud data can be rapidly obtained in a short time, data acquisition efficiency and precision are greatly improved, and the system is suitable for large-scale popularization and application. Through the installation of two long-distance radars and the cooperation of the other two short-distance radars, the non-blind area type measurement of the ship body is realized.

To provide a uniaxial two-rudder vessel capable of easily carrying out directional control and speed control and capable of carrying out vessel position retention maneuvering with fixed retention capacity at a low speed range.SOLUTION: A biaxial four-rudder vessel includes a maneuvering controller 201 for controlling an action direction of thrust around a stern working on a hull 110 by controlling a direction of a propeller wake flow of propulsion propellers 101a, 101b. The maneuvering controller 201 has parallel movement maneuvering unit 286 for moving the hull 110 in parallel in an arbitrary direction by combining an action direction of thrust of a starboard propulsion system 100a and an action direction of thrust of a stern propulsion system 100b in low speed range maneuvering.SELECTED DRAWING: Figure 2

The invention relates to the technical field of intelligent unmanned ships, in particular to a wave self-adaptive unmanned ship, a self-adaptive control system and a control method.The wave self-adaptive unmanned ship comprises a main ship body, a front arch, a rear arch, a suspension system, a propelling nacelle, a rigid sliding plate and a buoy, the main ship body is connected with the rear arch and the front arch, and the rigid sliding plate is fixed to the buoy; the propulsion nacelle is installed at the tail of the rigid sliding plate, the rear arch and the rigid sliding plate are installed through two bearings perpendicular to each other, the suspension system comprises a rocker arm, a plate spring and a TPMLM actuator, the rocker arm is connected to the rigid sliding plate, the plate spring and the TPMLM actuator are connected between the rocker arm and the rigid sliding plate and support the rocker arm to be in an upward inclined posture, and the rear arch is connected to the rigid sliding plate. The front arch is connected with the rocker arm, the plate spring and the TPMLM actuator are installed in parallel in the vertical direction, the TPMLM actuator is used for outputting active control force for restraining movement of the ship body, and the unmanned ship, the self-adaptive control system and the self-adaptive control method have the advantages that wave loads can be actively counteracted, and therefore movement restraining is achieved.

The invention relates to a catamaran hull system to improve performance characteristics. The catamaran hull system comprises a hull having a bow and a stern, at least one transverse step, and a posi-flow inductor system. The posi-flow inductor system includes an interior inductor channel extending vertically up the hull and terminating above a waterline when the hull is at rest, and a posi-flow cover plate attached to the hull and covering the interior inductor channel to form a posi-flow duct. This catamaran hull system provides a solution that reduces suction, improves air flow to the transverse step, and enhances overall hull efficiency. Overall, it offers improved performance, stability, and handling characteristics for catamaran vessels.

The invention provides a vibration reduction boat bottom structure and an amphibious boat, and relates to the technical field of amphibious boats. The vibration reduction boat bottom structure comprises a vibration reduction air bag and a macromolecule wear-resisting plate. The damping air bag and the macromolecule wear-resisting plate are located at the bottom of the main hull. The damping air bag is located between the macromolecule wear-resisting plate and the main hull. The vibration reduction air bag is of a cylindrical structure and extends from the stern to the bow of the main hull. The multiple damping air bags are arranged in the left-right direction of the main ship body. The shape of the damping air bag follows the boat bottom molded line of the main boat body. The multiple macromolecule wear-resisting plates are laid in a crossed and stacked mode, and the shapes of the macromolecule wear-resisting plates follow the boat bottom molded line of the main boat body. And the left and right sides of the macromolecular wear-resistant plate are fixed with the left and right sides of the main hull. The problems that a damping system arranged on a traditional wear-resistant layer is poor in damping effect and difficult to maintain can be solved.

The utility model discloses an unmanned ship for underwater topographic surveying and mapping, which belongs to the technical field of underwater topographic surveying and mapping and comprises a ship body divided into a bow end and a stern end. The bow end comprises a first flow guide plate and a second flow guide plate, and the first flow guide plate and the second flow guide plate are connected to the two sides of the hull respectively. And one side of the top of the ship body is connected with a cutting device capable of cutting. The device has the beneficial effects that by arranging the first flow guide plate, the second flow guide plate, the flow guide groove and the cutting device, aquatic plants on the traveling path of the unmanned ship are cut, the situation that the aquatic plants are wound at the bow end of the ship body and affect traveling of the ship body to conduct underwater surveying and mapping operation is avoided, the cut aquatic plants can be guided to the two sides of the ship body, and influences are reduced; by arranging a supporting rod, a pushing plate, a sliding frame, an electric pushing rod and the like, the ship body is blocked when encountering a shoal during traveling, and the ship body is pushed to retreat to enter the water surface when encountering stranding, and traveling operation is conducted again.

The invention belongs to the technical field of ships, and discloses an arrangement position type polar region ship with a stern-direction ice breaking and discharging structure. The arrangement position type polar region ship comprises a ship body, an ice discharging piece and a rudder, and the width size of the ship body is B; the ice discharging piece is fixed to the bottom face of the stern, the outer surfaces of the ice discharging piece are all curved surfaces, the curvature radius R1 of the ice discharging piece in the ship length direction ranges from 0.20 B to 0.80 B, the curvature radius R2 of the ice discharging piece in the ship width direction ranges from 2 to 8, the contact area of the large-curvature outer surface and crushed ice is small, the crushed ice and the curved surfaces are difficult to form a stable attachment relation, and the ice discharging piece is not prone to falling off. Therefore, under the action of hydrodynamic force, crushed ice at different positions of the curved surface can quickly slide to different positions, accumulation of the crushed ice on the inner side of the upper portion of the rudder is avoided, and the sailing safety of a ship is improved. The rudder extends in the height direction of the ship, and the upper end of the rudder is installed on the bottom face of the ice discharging piece in a swinging mode and located at the end, close to the bow, of the ice discharging piece in the length direction of the ship, so that the ice discharging piece plays a role in protecting the rudder.

Apparatuses for marine vessels to maximize solar energy collection are provided, along with systems and methods relating thereto. In some embodiments, an apparatus is mounted on the top of a marine vessel and extends its surface area, facilitating optimal sun exposure for solar panels. In some embodiments, prior to docking, the apparatus can be folded and rotated to fit within the original ship's profile, allowing for efficient cargo loading and unloading from the top as is standard in the cargo industry. In some embodiments, an apparatus comprises a plurality of solar panels and a plurality of skids configured to trail behind a stern portion of a marine vessel.

The invention discloses a hoisting pile driving barge suitable for offshore photovoltaic foundation construction and an operation method thereof. The hoisting pile driving barge comprises a main barge body, the bow of the main barge body is provided with a cabin, the middle of the main barge body is provided with a steel pile positioning system, and the stern of the main barge body is provided with a full-rotation crane and two pile driving mechanisms; the steel pile positioning system comprises four sets of steel pile positioning mechanisms which are symmetrically arranged on decks on the two sides of a ship side. The steel pile positioning mechanism comprises a positioning steel pile, a pile pulling device and a position adjusting mechanism; the rotary crane is fixed to a deck, and the two piling mechanisms are symmetrically arranged on the outer side of the main hull in the width direction of the main hull and rotationally arranged through rotary supporting structures correspondingly. According to the hoisting pile driving barge, through the steel pile positioning system and the anchoring positioning system, rapid positioning transition can be achieved, the positioning efficiency of the positioning barge is effectively improved, and the poor positioning precision is improved; the two piling mechanisms are matched with the rotary supporting structure, construction of a plurality of straight piles and inclined piles can be completed through one-time parking, and the piling efficiency in the operation construction process is improved.

The invention relates to a slamming strength evaluation method for a duct fin at the tail of a ship, which comprises the following steps of: (1) establishing finite element models of the duct fin and an adjacent ship body structure, and setting boundary conditions; (2) selecting the lower surface of the upper region of the conduit and the lower surface of the fin as slamming pressure acting surfaces, and calculating a slamming pressure peak value of each point; (3) applying slamming pressure to the finite element model, and applying a slamming pressure peak value as a static load to a plurality of local areas of the conduit and the fin to generate different loading conditions; and (4) calculating the structure response, evaluating the Von Mises stress of the plate shell unit and the axial stress of the rod unit, and judging whether the Von Mises stress and the axial stress meet the allowable stress related to the grid size or not. Compared with a method for calculating the slamming load based on CFD, the slamming strength evaluation method has the advantages that the calculation efficiency is extremely high, and the slamming strength of the conduit fin can be quickly evaluated in a short time; the method is more suitable for slamming pressure calculation of the tail conduit fin, and the considered loading mode is more comprehensive.

The batten type water lubricated bearing comprises a shaft sleeve and a plurality of composite battens which are installed on the inner wall of the shaft sleeve at intervals in the circumferential direction of the shaft sleeve, and the composite battens comprise the first battens installed in a bearing area of the bearing and the second battens installed in a non-bearing area of the bearing. A through type variable cross-section groove is formed in the side, away from the ship stern shaft, of the first batten in the length direction of the first batten, and the cross-section area of the variable cross-section groove is gradually increased from the bow to the stern. The invention further discloses an assembly method of the batten type water lubricated bearing. The first batten is arranged in the bearing carrying area and provided with the variable cross-section groove, so that the rigidity of the first batten is gradually reduced in the direction from the bow to the stern, axial gradient rigidity distribution is formed, the low-rigidity area at the stern end can adapt to deformation of the stern shaft to be adjusted in a self-adaptive mode, local stress concentration is reduced, and the stability of the stern end is improved. And a high-rigidity area at the bow end maintains necessary bearing strength, so that the axial load of the bearing is homogenized as a whole.

The invention relates to the technical field of ship group intelligent control, and discloses a ship motion trail optimization control system based on deep learning, which comprises control devices deployed on ships, receiving navigation state information of adjacent ships through a ship automatic identification system, generating asymmetric virtual energy-saving potential fields, superposing the asymmetric virtual energy-saving potential fields to form a total potential field, and outputting the total potential field; according to the method, a ship group spontaneously forms a dynamic navigation manifold with relatively low overall energy consumption, and through the asymmetric potential field design of bow repulsive force and stern gravitational force, linkage course correction caused by traditional collision avoidance is converted into collaborative energy-saving motion, so that the energy-saving effect of the ship is improved. Meanwhile, navigation safety is ensured in combination with a post-arbitration mechanism, and environment self-adaptive compensation is achieved through micro-disturbance inversion ocean currents.

A cable laying vessel and method are provided for laying an underwater cable, the cable laying vessel including a floating hull with a bow, a stern and a deck. The hull has a forward shipping direction. The cable laying vessel further includes a cable handling installation that includes a cable chute at the stern, and a cable quadrant and a quadrant manipulator for the cable quadrant on the deck. The cable chute includes a convex curved bottom wall with a bottom wall apex where the bottom wall faces furthest away from the stern. The bottom wall continues as from the bottom wall apex downwards back towards the stern. The cable chute includes a left outer guide wall and a right outer guide wall that extend under an angle with the bottom wall and that flare away from each other in a downward direction.

The invention provides an identification and early warning method and system for dangerous behaviors of inland ships. The method comprises the following steps: acquiring infrared monitoring video image data of an inland river water area to obtain a standard data set; then, performing ship main shaft identification according to the standard data set, performing bow and stern identification according to a ship gray value, and performing ship motion direction judgment; then, according to a method based on sample generation, a large number of ship target tracking virtual samples are generated; then, inputting the generated ship target tracking virtual sample into a DVIS model tracking training framework to realize tracking training, and obtaining a tracking model; and finally, according to the obtained tracking model and input real sample data, analyzing motion track data and a motion mode of the ship, and carrying out identification and early warning on dangerous behaviors of the ship. According to the method, tracking of ship behaviors under the complex ship shore environment condition is achieved, early warning is conducted on the ship dangerous behaviors, and the recognition rate of the ship navigation dangerous behaviors is further increased.

An assembly adapted for mounting a water engagement device to a marine vessel may include a transom plate, an actuator plate and a clamping assembly. The transom plate may be adapted to be connected to the marine vessel. The actuator plate may include a flange that is disposed under a bottom side of the transom plate. The clamping assembly is configured to engage the transom plate and the actuator plate to connect the actuator plate to the transom plate.

The invention discloses a steel wire rope splicing device and method for deepwater salvage, and relates to the technical field of salvage and salvage of offshore sunken ships, the steel wire rope splicing device comprises a sunken ship, a crane ship and a crane installed on a deck of the crane ship, a stern side jack is arranged at the stern of the deck of the crane ship, and a bow side jack is arranged at the bow of the deck; a 80t anchor gear is arranged at one end of the stern side jack, and a wave compensator is arranged at the other end of the stern side jack; one end of the bow side jack is provided with a rope container used for storing bow side steel wire ropes, the crane is provided with two main hook steel wire ropes, each main hook steel wire rope is provided with a triangular plate, the main hook steel wire ropes are spliced or disassembled through the bow side steel wire ropes and a second steel wire rope, and the triangular plates can achieve switching of lifting force when the steel wire ropes are spliced; the stern side jack is used for bearing ship sinking acting force when the steel wire rope is spliced or detached; the ship bow side jack plays a role in temporarily fixing the steel wire rope B in seawater when the crane of the crane ship is connected with or dismantled from the steel wire rope B.

An adjustable seat assembly may have a seat back that is configurable in a fore position or a stern-facing seat, an aft position for a bow-facing seat, and a pillow position which facilitates a user laying down across the stern-facing seat. In addition, the seat back may be placed in a stowed position in which the seat back is absent from both the bow-facing and stern-facing seats, such that the seats cooperate to provide a planar support surface along an aft-to-fore extent of the seat assembly. The seat back may be adjustable by hand without tools, such that a user may easily reconfigure the seat assembly to sit facing the bow, to sit facing the stern, or to lie down.

A modular keel is arranged along a centerline of a boat hull for displacing a bow wave towards the stern and creating distinct pressure zone situations to draw the keel back into water and reduce pitching. The keel features a base extending along a centerline of the boat hull and two symmetric curved segments. The base tapers toward a vertex on the centerline at a fore transitional area that generates a concentrated high pressure zone to help lift the hull and reduce pitching. The keel includes an aft transitional area for expelling water away from the keel in a laminar flow pattern during forward movement of the boat hull. The keel further includes an intermediate transitional area that creates a low pressure zone to dampen the motion of the hull through waves.

The invention provides a method and a system for analyzing the abrasion loss of a marine water-lubricated stern bearing and ship monitoring equipment. The method comprises the following steps: acquiring multi-modal data of the marine water-lubricated stern bearing; performing multi-dimensional feature extraction on the multi-modal data to obtain multi-dimensional feature data; inputting the multi-dimensional feature data into a wear quantitative evaluation model to obtain a wear quantitative evaluation result of the marine water-lubricated stern bearing, and determining an operation state of the marine water-lubricated stern bearing based on the wear quantitative evaluation result; and inputting the wear quantitative evaluation result and the historical wear quantitative evaluation result into a wear trend prediction model to obtain a predicted wear trend of the marine water-lubricated stern bearing in a future preset time period. According to the method, the accuracy and the reliability of abrasion loss analysis of the marine water-lubricated stern bearing are improved.

The invention provides a ship tail abnormal noise source separation method and system, and the method comprises the steps: employing a ship noise reference benchmark database, combining ship water navigation features, and sequentially collecting noise source correlation features when a ship is in an independent start-stop state, a steady state working condition and an unsteady state working condition of each main and auxiliary equipment; performing preset combined analysis of total-level contrastive analysis, 1 / 3oct frequency band analysis, line spectrum analysis, DEMON spectrogram analysis, frequency multiplication analysis and LOFAR spectrum analysis on the noise source correlation characteristics to obtain a plurality of ship tail abnormal noise source correlation results; and determining a noise comprehensive proportion of a plurality of ship tail abnormal noise source correlation results, and generating a ship tail abnormal noise source separation analysis result. According to the method, the problems of incomplete testing, inaccurate positioning and unclear abnormal reason analysis in the ship tail abnormal noise processing process can be solved, and technical support is provided for formulating an abnormal noise troubleshooting and repairing scheme.

The invention discloses a multifunctional unmanned patrol rescue boat which comprises a boat body, a first equipment area, an unmanned aerial vehicle, a first life buoy and a manipulator. The rescue boat further comprises water spraying propulsion mechanisms arranged on the two sides of the tail of the boat body and comprising a water outlet pipeline connected with the boat body and an angle adjusting mechanism arranged on the boat body. A propeller is arranged in the water outlet pipeline; the adjusting end of the angle adjusting mechanism is connected with the water outlet pipeline and used for adjusting the spraying inclination angle of the water outlet pipeline. The life buoy launching mechanisms are arranged on the two sides of the front end of the ship body; the lifesaving lifting mechanisms are arranged on the two sides of the ship body; the lifesaving lifting mechanism lifts the person to be rescued after the person sits on the lifesaving lifting mechanism to get rid of water immersion. According to the water spraying propulsion mechanism, the spraying inclination angle of the water outlet pipeline can be flexibly adjusted in the rescue process, so that dynamic increase and decrease control over the immersion depth of the ship body is achieved, the problem of ship body unbalance in the rescue process is solved, and the stability of the rescue boat is improved.

The invention provides a stern side thrust hole design method, which comprises the following steps: S1, calculating pressure distribution and streamline distribution of the surface of a ship body; S2, determining the position of a stern side thrust hole; S3, designing a diversion trench based on the position of the side thrust hole: outwards extending the diversion trench by taking the side thrust hole as the center of a horn mouth to form a horn mouth structure with a deep inner part and a shallow outer part; the center point of a first arc at the front end of the intersecting periphery of the flow guide grooves right faces the water flow direction in streamline distribution of the tail of the ship. The water flow passes through the central point of the second arc at the tail end of the diversion trench; and S4, designing grids in the side pushing hole, wherein the first grid is parallel to the water flow direction, and the second grid is perpendicular to the first grid. According to the design method of the stern lateral thrust hole, the resistance of the ship body after the hole is formed is effectively reduced, through the shape and depth design of the diversion trenches, the pressure distribution at the diversion trenches is uniform and gentle, the pressure gradient is small, the transition is smooth, local stress concentration and flow separation are reduced, and the resistance of the small stern lateral thrust hole to the ship body is reduced; and the influence on the rapidity of the ship is reduced.

According to the ultra-efficient energy-saving method and device for automobiles, ships, trains, submarines and aircrafts, when the automobiles and the ships advance, the heads push air to scatter all around, and negative pressure areas are formed on the bodies and the tails of the automobiles and the ships to suck and pull the automobiles and the ships. A rear flow cover 2 is additionally arranged at the head of the vehicle and vessel, scattered air is forced to leave the rear flow cover in an accelerated mode in the direction opposite to the advancing direction of the vehicle and vessel and flow towards the side and the tail of the vehicle and vessel, power (reverse thrust) is provided for the vehicle and vessel, air in a negative pressure area of the side and the tail of the vehicle and vessel is supplemented, the speed of airflow leaving the rear flow cover relative to the ground is reduced, and energy loss is reduced. A water baffle 4 is arranged on the bow, and the bottom edge of the water baffle is connected with a water pressing plate 5, so that the water pressure of the raised water level pushes the boat to advance. The water pressing plate is located on a static horizontal plane, so that the ship does not easily shovel water when advancing. The two sides of the ship are respectively provided with a manger board 1, so that waves generated by the ship surge towards the tail of the ship to reversely push the ship to advance. The air bag is arranged at the tail of the vehicle, high-pressure air generated by the windward side of the head of the vehicle is conveyed to the air bag, the air bag is prone to deformation and automatically searches for a large-negative-pressure position to fill a negative-pressure area, resistance is reduced, and safety is achieved.

This invention provides an in-situ stratified rapid sampling device and method for river and lake sediment pollution, relating to the field of river and lake sediment pollution monitoring technology. The device includes: a main control system, a main sampling system, a mounting frame, a depth sounding module, a working vessel hull, and a crane. The depth sounding module is installed below the stern of the working vessel hull. The main control system and the crane are both mounted on the working vessel hull. The main sampling system is connected to the crane and fixed within the mounting frame. The depth sounding module is used to detect and determine water depth and the thickness of floating mud, flowing mud, and silt. The main control system is used to control the sampling process of the main sampling system and to read the water depth, sediment thickness, and determine whether the main sampling system has completely inserted into the sediment in real time. The main sampling system is used to insert into the sediment to perform stratified sampling of the sediment pore solution. This invention solves the problems of low sampling rate, inability to perform stratified sampling, deviation between stratified sediment samples and actual conditions, low efficiency, and large errors in detection results in existing technologies.