39 results about "Water layer" patented technology

The invention discloses a semi-solid-state complex no-tillage dry direct seeding method for crop seeds. The no-tillage dry direct seeding method comprises the following steps: S1, keeping a water layer of 1cm-5cm in a ditch, and paving straws obtained by harvesting preceding crops on a ditch surface; S2, applying a base fertilizer on the ditch surface paved with the straws and cleaning the ditch; S3, seeding the crop seeds on the ditch surface, and mixing the crop seeds with semi-solid-state biomass materials, a compound fertilizer and a biopesticide before seeding before seeding seeds, wherein the mixing mass ratio is that the crop seeds to the semi-solid-state biomass materials to the biopesticide is (1-10) to (70-800) to (1-3), and the moisture content of the semi-solid-state biomass materials is 40%-80%; and S4, after seeding the seeds, keeping the ditch surface at a dry state for 3-7 days. According to the semi-solid-state complex no-tillage dry direct seeding method, tillage and combustion of winter crop straws are not carried out, a whole land of field immersing water is not used for irrigation and the water immerses after the seeding, and the biological benefits are obvious; the working energy consumption is reduced, stubbles are not killed by pesticides, haze is reduced and the irrigation water is reduced.

The invention relates to a power transmission flexible bus which has three waterproof layers from inside to outside through the arrangement of a metal protection layer, a first waterproof layer and a second waterproof layer, ensures the electrical insulation, and also has the waterproof effect through the arrangement of a mechanical protection layer. Stable and reliable protection is formed on the surface of a product, which is directly exposed to seawater, and the mechanical strength is improved; therefore, the waterproof and compressive properties of the product in the deep sea environment are remarkably improved, the use safety of the product is effectively improved, and the service life of the product is effectively prolonged. Meanwhile, through the arrangement of the first lining layer and the second lining layer, stable and reliable supporting and buffering are formed for the metal protection layer and the mechanical protection layer, the metal protection layer is prevented from damaging the insulating layer, the mechanical protection layer is also prevented from damaging the second waterproof layer and the metal protection layer, and the durability of each layer of the product is further ensured; mutual damage between different layers is avoided, and the function integrity of the function of each layer in the preset use period is guaranteed.

The invention discloses an underwater profile water sample automatic collection device capable of setting trigger pressure, and relates to the technical field of underwater sampling. The sampler comprises a sampling mechanism and a driving mechanism. The sampling mechanism comprises a sampling barrel, a one-way valve and a piston type water pumping assembly with a piston and a spring; a water inlet is formed in the upper end of the sampling cylinder. The driving mechanism is mainly a transmission assembly, and the transmission assembly is specifically composed of a plug pin, a rotating shaft, a transmission gear, a driving cam, a pressure response air cylinder and the like. A piston rod in the pressure response air cylinder moves under the action of water pressure, a transmission gear is driven to rotate through a rack, a driving cam coaxially arranged with the transmission gear rotates along with the transmission gear and pushes a limiting device on a plug pin, limiting of the plug pin to a piston in the water pumping assembly is relieved, and the sampling barrel starts to collect water immediately. Automatic and reliable opening and closing are achieved through mechanical self-locking and spring energy storage, and the sampling fidelity is high; by setting the relative positions of the driving cam and the rotating shaft, a user can preset the closing triggering depth according to operation requirements; and meanwhile, by configuring a plurality of trigger nodes, the grading response and closing functions of the device under different water layer depths are realized, the sampling flexibility and the adaptability to different water layer environments are improved, and the operation requirements of diversified section sampling can be accurately met.

The application discloses a short-term accurate prediction method for tuna longline fishing center fishing ground and hooking route based on middle layer water temperature and ocean current spatial characteristics, and has the characteristics that the fishing ground position is accurately predicted according to the spatial vortex characteristics of the middle layer water temperature (reference 100m water layer, auxiliary reference 50m water layer) and the ocean current (preferably the ocean current of the 100m water layer, auxiliary reference the ocean current of the 50m water layer), and the hooking route is designed according to the method that the hooking route is maximally 90 degrees with the 100m water layer ocean current. The application can accurately predict the fishing ground position and the hooking route by combining the marine environment and the tuna longline fishing boat operation characteristics, and can improve the catch by 10-20% and improve the production effect.

This invention relates to the field of float monitoring station technology, specifically disclosing a float monitoring station for water quality testing, comprising: a buoy structure, a propulsion device, and a sampling device. The buoy structure is capable of floating on the water surface; the propulsion device is disposed on the top surface of the buoy structure near the center; two sets of sampling devices are symmetrically arranged at the output end of the propulsion device, and the two sampling devices can move up and down under the limitation of the propulsion device. The two sampling devices can sample the shallow and deep water of the target water area respectively. The propulsion device and the sampling devices cooperate with each other to improve the detection quality and accuracy after water quality sampling. In summary, this invention achieves efficient and accurate sampling of different water layers through the layered layout of dual sampling devices, precise positioning of high-precision drive components, and synergistic design of sampling end rotational motion mixing, combining the representativeness of sampling data with the stability of equipment operation, thereby providing high-quality and high-precision test water for subsequent detection.

The invention discloses a basic scouring real-time monitoring system based on a time domain reflection technology, and the system comprises a signal collection module which is used for detecting and collecting water-soil-gas three-phase dielectric constant difference data in real time; the data processing module is used for carrying out preprocessing and feature extraction on the collected data, and calculating the elevation change of the seabed surface according to the delay inequality of the time domain reflection signal to obtain a mapping curve of the measured volume dielectric constant of the composite layer including the water layer and the sediment and the seabed surface elevation; the early warning module is used for triggering multi-stage alarm when the elevation change of the seabed surface exceeds a safety value; and the output module is used for outputting a mapping curve of the measured volume dielectric constant of the composite layer including the water layer and the sediment and the seabed surface elevation to a cloud analysis platform in real time. The invention further discloses a basic scouring real-time monitoring method based on the time domain reflection technology. Interference of silt and suspended solids can be eliminated, and real-time recognition and early warning of underwater foundation scouring are achieved.

The invention discloses a preparation method of solar concentrating resin. According to the method, bi-phenolic methane and dimethoxypropane are dissolved in the molar ratio being 1:(8-12), meanwhile, 8-12 ml of a catalyst is added, and the mixture is heated to the temperature of 65-70 DEG C and has a reaction at the temperature for 28-32 min; the mixture is cooled to the temperature of 60 DEG C, a first part of liquid caustic soda is slowly and dropwise added, the mixture is heated, and the reaction temperature is kept to range from 65 DEG C to 70 DEG C, reflux is performed for 2 h, the dimethoxypropane which does not react is recovered in a reduced pressure manner, the mixture is cooled to the temperature below 65 DEG C, 55-65 ml of a solvent is added, meanwhile, a second part of liquid caustic soda is dropwise added, reflux is performed for 2 h, a solvent solution turns yellow and is cooled and washed with hot water, a water layer is separated until the solvent solution is transparent, the solvent is evaporated out, and the resin is prepared. The resin has the characteristics of high concentrating property, high precision, good weather resistance, low cost and the like and can comprehensively improve the efficiency and the quality of a solar concentrating power generation system in the aspects of the optical effect, the weather resistance and the technology.

This invention discloses a method and apparatus for predicting multiples in seabed node multi-component data. The method includes: obtaining a migration data volume using Kirchhoff pre-stack time migration based on the P-wave component data of the seabed node; constructing a seabed depth model based on interactive picking and time-depth conversion using the migration data volume; acquiring multiple seabed sample points based on the seabed depth model; determining the seabed reflection travel time and distance spread based on the multiple seabed sample points; and predicting multiples in the seabed based on the component data of the seabed node, the seabed reflection travel time, and the distance spread. This method effectively solves the problem that existing SRME methods cannot predict multiples in OBN converted wave data, and can significantly improve the multiple suppression effect of OBN data. Furthermore, it is adaptable to arbitrary water depths and rugged seabed areas, significantly improving the accuracy of multiple prediction.

The invention relates to the field of tunnel engineering, in particular to a supergravity test device and a seabed shield segment deformation evaluation and prediction method. The supergravity experimental device comprises a geotechnical centrifuge and a hanging basket provided with a counterweight mass block and a model box, a similar stratum and a shield tunnel model in the similar stratum are arranged in the model box, and a displacement sensor is arranged in the tunnel model; a lead sand counterweight layer is laid at the uppermost end of the similar stratum; and an annular water tank sleeves a rotating shaft of the centrifugal machine and is communicated with the interior of the model box through a water pipe. The seabed shield segment deformation evaluation and prediction method based on the supergravity test device comprises the following steps: accelerating a geotechnical centrifuge to a target centrifugal acceleration, and restoring a prototype stress field; the height of an overlying water layer is dynamically adjusted through a water tank in the running process of the centrifugal machine, and overlying load evolution is simulated; calculating the equivalent flexural rigidity of the tunnel model based on the equivalent flexural rigidity model; deformation data are obtained in real time through a displacement sensor of the tunnel segment, the segment deformation amount is obtained, and the bending moment is solved in combination with the equivalent bending rigidity. The method can truly reproduce the long-term deformation and disaster development law, provides a key basis for early risk identification, structural design optimization and operation and maintenance strategy formulation, and has important significance for guaranteeing the full life cycle safety of the subsea tunnel.

This invention discloses a method for evaluating the hydrodynamic response of flexible floating structures considering the equivalent effect of impermeable upper water. First, a three-dimensional hydroelastic-porous sidewall coupled model is established, equating the flexible structure to an elastic disk below the still water surface, with the outer impermeable boundary equivalent to a porous sidewall with minimal permeability. By dividing the external water area, the internal confined overlying water layer, and the lower water body and defining velocity potentials, semi-analytical solutions for the velocity potentials of each region are constructed using the separation of variables method and the eigenfunction expansion method. Combining fluid continuity conditions and porous sidewall matching conditions with pressure jump compensation, watershed matching is performed to solve for each modal coefficient, and then wave excitation force, deflection response, and free surface response are calculated. This invention, through layered modeling and near-impermeable boundary equivalence treatment, evaluates the water-blocking effect of the solid floating ring and the influence of the confined overlying water layer on the hydrodynamic response of the flexible structure, providing a theoretical basis for the structural optimization and wave-resistant design of floating photovoltaic systems under impermeable upper water conditions.

The invention discloses a river regulation data analysis management system and method based on artificial intelligence, and relates to the field of intelligent management, and the system comprises a main control module which is used for the general control of the data stream editing and instruction transmission of each function module; the water layer division module is used for defining and dividing a water layer of a target water area, dividing the water area into a plurality of independent water layers according to hydrological characteristics, and distributing a unique identifier for each water layer; the silt collection module is used for acquiring obstruction accumulation data in a specified water layer through a sensor network; the floating acquisition module is used for acquiring floating object coverage data in a specified water layer; fusion analysis is carried out on multi-dimensional and real-time collected data by using an artificial intelligence deep learning algorithm, and the deterioration risk probability of a specific period in the future can be output, so that a management department can identify a high-risk area and intervene in advance before a water quality or sedimentation problem actually occurs or deteriorates, and then the logic of river regulation is assisted to be changed.

The invention discloses a design method for active guiding, avoiding and repelling of a high-density-level floating body of a near water taking open channel. The design method comprises the following steps that the water taking opening width, the open channel depth, the water flow condition and the vertical distribution characteristic of the floating body of a target open channel are obtained; the layering number of the underwater pump pushing system and the installation height corresponding to each layer are determined; each layer of pump pushing system takes the midpoint in the width direction of the water intake as the circle center, and fan-shaped plane layout design of the single-layer pump pushing system is carried out in the area in front of the water intake; aiming at different layers, different hydraulic parameters are configured for the single pumps of the different layers, and the hydraulic parameters comprise the spraying angle and the water flow speed; in the layout of the pump pushing system on each layer, the multiple single pumps are divided into main thrust pumps and auxiliary flow guide pumps, and the thrust of the main thrust pumps and the thrust of the auxiliary flow guide pumps are distributed in a gradient mode in the expelling direction. According to the invention, non-blind area coverage of the whole water layer can be realized, various floating bodies are effectively guided and repelled, water taking safety is guaranteed, and high efficiency and environmental friendliness are realized.

The application discloses a kind of gas-liquid balance sampling systems and methods based on vacuum negative pressure drive, including low-pressure tank and high-pressure tank, sample solution is loaded in high-pressure tank, and high-pressure tank is provided with baffle, baffle separates high-pressure tank inner chamber into first cavity and second cavity, first cavity is connected with low-pressure tank by first flow guide pipe, first control valve is arranged on first flow guide pipe, shunt hole is arranged on baffle, second control valve is arranged in shunt hole.The application realizes the automatic formation of sampling cavity and the efficient precipitation of target gas through two times of sequential controllable negative pressure operation, does not rely on carrier gas, consumable components such as fragile membrane, so that the overall structure is simple, low in cost and convenient to maintain, and the device can be submerged into seabed or deep water to locate and precipitate in real time in specific water layer, without sampling to analysis room for precipitation operation, the overall process is convenient and fast.

The invention discloses a control method for automatically adjusting the position of a net cage. The control method sequentially comprises the following steps: S1, inputting parameters of a set height value from the net cage to the sea level, a wave peak value beta and a height Y from a net cage monitoring point to the sea level to a host; s2, matching the parameters with a database; if the data are not matched with the data in the database, directly entering S3; s3, judging whether the net cage is currently located in a set height range or not; s4, after lifting of the net cage is completed, whether the current height of the net cage is within the set height range value or not is judged again till the net cage is within the set height range value. The device can freely ascend and descend according to breeding requirements and environmental conditions, and specific water layer breeding is achieved.

The invention relates to a multi-dimensional self-adaptive portable underwater detection device and a multi-dimensional self-adaptive portable underwater detection method. In order to solve the problems that an existing fixed camera cannot cover a whole water layer, is inconvenient to adjust, has a large monitoring blind area and the like, the device comprises an underwater camera arranged on a lifting rod at an interval of 1 meter, a vertical moving module driven by a gear and a rack, a horizontal moving module driven by a bevel gear and a fixing module. Horizontal / vertical movement is independently controlled through the double gear motors, and accurate positioning of the camera within the depth of 5-10 m and the full-width range of the net cage is achieved; the cameras are distributed at equal intervals to eliminate view blind areas, and the whole-water-layer fish monitoring deviation is smaller than or equal to 5% in combination with the IP68 anti-corrosion design. Remote control is achieved through wireless communication, the automation degree is high, monitoring blind areas can be reduced, core components are resistant to corrosion, the system is suitable for large-scale breeding monitoring, and efficiency and data accuracy are improved.

The invention relates to a robot device for underwater concrete crack detection. The robot device comprises an external supporting frame, an equipment cabin, a camera, a cleaning rotary brush and a propelling system. The composite optical observation window has the beneficial effects that the composite optical observation window is a three-layer optical cabin, a clear water layer is filled with water, and a water body is directly taken from a clear part of an operation water area, so that the optical consistency of the clear water layer and an external water area is ensured, the three-layer optical cabin fundamentally solves the problems of optical distortion and blurring of underwater imaging, and a clear image is obtained; the integrated rotating brush can clear surface attachments before imaging, meanwhile, the pair of cleaning rotating brushes are symmetrically installed on the two sides of the composite optical observation window, and the telescopic position is accurately controlled through a servo motor. The synchronous control technology is adopted for the rotating brush driving motors, it is guaranteed that the two cleaning rotating brushes rotate oppositely in the reverse direction at the constant speed all the time, the cleaning rotating brushes can be accurately controlled to stretch out or retract in the direction parallel to the central axis of the shell, torque is eliminated through the contra-rotating design, and the cleaning process is stable.

The invention belongs to the technical field of ocean engineering, and particularly discloses a modular floating type artificial fish reef system which comprises a modular buoyancy unit, an ecological function unit, a dynamic anchoring unit and a monitoring system. The buoyancy unit adopts a corrosion-resistant high-density polyethylene shell, and a sealed air cabin and a counterweight cabin are arranged in the buoyancy unit; the ecological function unit is based on a hexagonal main framework and is connected with a triangular truss to form a fractal topological framework, and an inhabiting environment is provided for marine organisms. The dynamic anchoring unit is connected with a seabed adsorption anchor through an elastic mooring chain to fix the system in a set sea area; the modular buoyancy unit is used for enabling the fish reef to stably suspend in a set water layer; the ecological function unit is used for providing a three-dimensional space for inhabitation, attachment and reproduction of marine organisms and simulating a natural marine environment; the dynamic anchoring unit is used for stably suspending the fish reef in a set sea area; the monitoring system is used for quantitative management of the surrounding environment and the ecological effect of the fish reef.

The invention discloses a semi-suspension artificial fish nest, which relates to the technical field of artificial fish nests, and comprises a fixed frame, an adjusting unit and a semi-suspension unit, extension rods are slidably mounted on the two sides of the interior of the fixing frame, and the outer side ends of the extension rods are connected with one end of the inner side face of the fixing base; the adjusting unit comprises a top frame, a first screw rod, an adjusting plate, a frame, a placing frame, a sliding block and a sliding groove, the two ends of the top frame are connected with the middles of the two outer side faces respectively, the first screw rod is installed in a screw hole in the top face of the top frame in a threaded mode, and the bottom end of the first screw rod is connected with the middle of the top face of the adjusting plate. The artificial fish nest can be anchored by adopting the counterweight box so as to ensure the stability of the artificial fish nest under the condition of stormy waves, and the artificial fish nest is kept in a semi-suspension state in cooperation with the retractable fixing rope and the foam plate, so that the optimal environment can be provided for fishes in different water layers so as to ensure the practicability of the artificial fish nest.

In order to solve the problem that the flatness of the bottom of an existing foundation pit in underwater excavation is difficult to detect, the wireless interactive self-adaptive inspection instrument for foundation pit underwater excavation comprises an inspection instrument body used for effectively detecting the flatness of the bottom of the foundation pit, and the inspection instrument body is arranged at the junction of a muddy water layer and a mud layer in the foundation pit. And the absolute position of the inspection instrument in the foundation pit is determined through the electric field frequency between the inspection instrument and the reference point power supply arranged around the foundation pit. According to the invention, the postures of the bottom mark can be obtained through the itinerant detector body, the highest vertex and the highest edge midpoint are calculated, the electric field intensity detectors and the point power supply emitters on the two points are activated, and interaction between the itinerant detector body and the bottom mark is realized through the point power supply electric field frequency. The bottom mark at the nearest position is activated through the itinerant detector body, the coordinate position of the bottom mark is obtained, the bottom mark at the position is hypnotized, the distance itinerant detection position is moved, the bottom mark at the last position is activated, a floating mechanism is started to complete bottom mark recovery, full-coverage itinerant detection of the whole pit bottom face is completed through circulation, and self-adaptive arrangement, wireless interaction and dynamic recovery and reuse of the bottom mark are achieved.

The invention relates to the technical field of detection, in particular to sonar-based cast-in-place pile sediment monitoring equipment, which comprises a hollow cylinder, the bottom of the hollow cylinder is provided with a balancing weight, and the outer side of the middle of the hollow cylinder is movably sleeved with a floating lantern ring; an annular buoyancy pipe fixedly connected with the annular sleeve is arranged on the outer side of the annular sleeve; ultrasonic waves emitted downwards by the ultrasonic probe are perpendicular to the surface of the connecting ring, and a connecting sliding block is fixed to the edge of the connecting ring. The device has the beneficial effects that the outer side of the hollow cylinder is movably sleeved with the floating lantern ring, the annular sleeve is fixed to the lower side of the floating lantern ring, the annular buoyancy pipe fixed to the annular sleeve is arranged on the outer side of the annular sleeve, and the hollow cylinder of the device is lowered to the bottom of a cast-in-place pile hole through the traction rope, suspended under the action of gravity and kept vertical; the annular buoyancy pipe can float on the surface of a water body layer, so that the ultrasonic probe can vertically and downwards emit ultrasonic waves, and the accuracy of a monitoring result is prevented from being influenced by self-inclination.

The invention relates to the technical field of water pollution detection, in particular to a stratified sampling device for water pollution detection, which comprises a sampling barrel, a piston and a control assembly, a barrel cavity is formed in the sampling barrel, a liquid inlet is formed in the circumferential direction of the sampling barrel, the liquid inlet can be communicated with the barrel cavity, and the piston is elastically and slidably arranged in the barrel cavity of the sampling barrel. And the piston moves downwards along the barrel cavity. The control assembly is arranged, the piston is controlled by the control assembly to intermittently move upwards, water samples in a plurality of discontinuous target water layers are sucked into the cylinder cavity, compared with the prior art, when the water samples in the discontinuous target water layers are sampled, the piston automatically sucks and samples every time the sampling cylinder reaches the target water layers, and the sampling efficiency is greatly improved. When the sampling barrel leaves the target water layer, the piston stops sucking and sampling, so that the sampling barrel does not need to be pulled out from the water, water samples of a plurality of discontinuous target water layers can be sampled, and the device is simpler and more convenient to use.

The invention discloses a self-adaptive ocean profile observation system and method, a water surface floating body unit floats on the water surface and communicates with a shore-based terminal and an underwater profile unit, and the underwater profile unit is connected with the water surface floating body unit through an anchor mooring rope; a profile task self-adaptive scheduling module is arranged in the water surface floating body unit and / or the shore-based terminal, and is used for extracting environmental parameters representing a water body vertical structure and / or a time change degree according to historical profile observation data; acquiring working state parameters of the underwater profile unit; determining at least one task parameter of the next profile observation task according to a combination relationship between the environment parameters and the working state parameters; and the water surface floating body unit issues the task parameters to the underwater profile unit, so that the underwater profile unit reciprocates in a preset depth range along the anchoring mooring rope and executes a profile observation task. According to the method, online and adaptive adjustment of task parameters is realized, so that observation resources preferentially cover time periods and key water layers with remarkable environmental changes, and the method is wide in application scene.

The invention discloses a device for collecting seawater in a water layer with specified depth, and aims to provide a device for collecting seawater in a water layer with specified depth, which can effectively improve the consistency of the actual water layer depth and the set water layer depth of a collected water sample. The water sampling barrel comprises an upper piston cavity and a lower piston cavity which vertically extend and are communicated, the inner diameter of the lower piston cavity is larger than that of the upper piston cavity, an upper limiting block is arranged at the bottom of the upper piston cavity, a vertical flow guide groove is formed in the upper portion of the inner wall of the upper piston cavity, and a lower limiting block is arranged at the bottom of the lower piston cavity; the buoyancy piece is connected to the top of the water sampling barrel; the upper piston is arranged in the upper piston cavity in a sliding mode and abuts against the upper limiting block; the lower piston is slidably arranged in the lower piston cavity, and a trigger rod is arranged at the lower end of the lower piston; the supporting sleeve is fixed below the water sampling barrel through a connecting piece, and the trigger rod is inserted into the supporting sleeve; the balance weight is provided with an inserting hole, and the supporting sleeve is inserted into the inserting hole; and the self-releasing assembly is used for installing the counterweight on the supporting sleeve in a releasable manner.

The invention discloses an automatic sampling and measuring device for in-situ monitoring of deep sea dissolved methane, which comprises a gas-liquid balance barrel, the gas-liquid balance barrel is connected with hoisting equipment through a rack assembly, a transverse plate is arranged in the gas-liquid balance barrel, and the transverse plate is used for dividing an inner cavity of the gas-liquid balance barrel into a sampling cavity and a solution cavity; the solution cavity is provided with a water inlet valve, the sampling cavity is arranged in a vacuum mode, the transverse plate is provided with a gas-phase separation valve, the gas-phase separation valve is connected with the control unit, and the control unit controls the gas-phase separation valve to be selectively opened. By arranging the sampling cavity and the solution cavity which can be selectively communicated, after a target water source is obtained from a deep sea target water layer, methane dissolved in seawater is automatically separated out by opening the gas phase separation valve and utilizing the vacuum state of the sampling cavity, and relevant data is obtained through measuring elements such as a methane sensor and a pressure sensor; therefore, the content of the dissolved methane in the target solution is calculated, and real-time monitoring of the content of the methane in the in-situ seawater is formed.

The utility model discloses a kind of offshore rescue climbing nets, belong to offshore rescue technical field, its technical scheme main points include vertical band and horizontal band, the quantity of vertical band and horizontal band is several, the surface of vertical band and horizontal band is provided with water-repellent layer, the front side and the back of vertical band are provided with connecting rod, the surface of connecting rod is provided with hooking mechanism, the quantity of hooking mechanism is two, the surface of hooking mechanism is provided with pulling mechanism;It is solved that part of offshore rescue climbing net in use in the prior art, need to use rope to bind climbing net and ship surface force point, the fixing efficiency of climbing net is lower, in emergency rescue scene, it can consume valuable time, influence rescue efficiency, if binding operation is not standard, it can lead to not firm, under the dynamic load of later sea wave impact or personnel climbing, prone to the problem of loosening even slipping of binding point.

The invention relates to the technical field of tailing pond treatment, in particular to a tailing pond closing efficient energy-saving combined drainage method which comprises a drainage area division step and a combined drainage construction step. Wherein for the deep fine silt saturated water area, a passive self-drainage and drainage layer independent of external power is constructed, the self-drainage and drainage layer is composed of a horizontal layered structure, the structure at least comprises an evaporation water guide layer and a capillary conducting layer which are arranged from top to bottom, and the capillary conducting layer is laid on the leveled beach face and used for sucking water in lower fine silt; the evaporation water guide layer is used for guiding the water absorbed by the capillary conduction layer upwards and promoting the evaporation of the water; through regional identification and differentiated treatment strategies, active drainage and passive drainage technologies are combined, a self-drainage and drainage layer structure based on natural force driving is adopted, comprehensive drainage from ground surface water to deep fine silt confining water is achieved in a safe, economical and efficient mode, the beach face bearing capacity is rapidly improved, and the service life of the beach face is prolonged. And conditions are created for subsequent closed reservoir engineering construction.

To address the difficulty of positioning inspection instruments during underwater excavation quality inspection of foundation pits, this invention provides a wireless autonomous positioning device for an underwater inspection robot in foundation pit construction. The device includes a set of reference point power supply arrays and an inspection instrument. For small foundation pits, the inspection instrument calculates the distance between itself and each reference point power supply by detecting the electric field frequency and intensity emitted by different reference point power supplies, thereby calculating its coordinate position. For large foundation pits, where the signal strength of the reference point power supplies at the pit edge is insufficient, a set of surface buoys is added. The reference point array is equipped with a laser rangefinder, which can perform more than three distance measurements on each buoy to locate it. Subsequently, through the surface buoy array, the power supplies are activated one by one to form an electric field in the muddy water layer within the pit. Each power supply uses a different frequency range, and the underwater inspection instrument, equipped with an electric field strength detector, calculates the distance between the buoys by detecting the electric field frequency and intensity.

The invention provides a seawater oil sample collection method with a visual sampling volume, and belongs to the technical field of marine pollution detection.The seawater oil sample collection method comprises the steps that a sampling bottle is installed on a sampling device after being subjected to pre-acidification treatment in the sampling bottle, the sampling bottle is lowered to a target water layer to trigger peeling operation, the mass value of an empty bottle is measured, a bottle plug is opened, and filling is started; an integrated force sensor continuously measures a real-time total mass value, the total mass value is filtered and then divided by a seawater density estimated value to obtain a current sampling volume value, the sampling progress is displayed on a visual display screen in real time, and a sampling strategy is optimized by dynamically adjusting bottle plug opening control parameters through a sampling process game model. And the seawater sampling signal quality evaluation model identifies and repairs abnormal data, and when the target sampling volume value is reached, the bottle stopper is closed to complete sampling, so that the technical problem that the sampling volume cannot be accurately measured in real time and the sampling progress cannot be visually displayed in real time due to the dynamic change of the seawater density in the seawater oil sampling process is solved.

The invention relates to the technical field of oil and gas geophysics, and discloses a combined suppression method and device for multiple waves in a shallow water work area and electronic equipment. The method comprises the following steps: processing shallow water work area seismic data, and obtaining work area water bottom data; suppressing multiples by adopting a DWD method to obtain an accurate seabed of the whole work area, and then improving and obtaining a DWD multiple prediction model by utilizing a wave field continuation mode; suppressing multiple waves by adopting a GSM (Global System for Mobile Phone) method; the DWD multiple wave prediction model and the multiple wave model predicted by the GSMP are subjected to adaptive subtraction at the same time; and performing simultaneous parallel matching and adaptive subtraction by using the DWD multiple prediction model and the multiple model predicted by the GSMP to obtain data after surface related multiple suppression. According to the technical scheme, the combined method model parallel matching pressing effect is better than the single method pressing or combined method pressing model series pressing effect; effective suppression of short-period multiples of a shallow water layer is achieved, and the suppression effect is good.

This invention discloses a submerged automatic lake water stratification sampling device, relating to the field of water environment monitoring and water sampling technology. The device includes a surface buoy assembly, a main chamber assembly, and a three-point anchoring and lifting assembly. The surface buoy assembly can be deployed to the water surface for positioning and communication, and can be retrieved and submerged. The main chamber assembly includes a top cover, a main shell, a module mounting frame, a sampling module, a battery module, and a functional module; the module mounting frame allows for the detachable installation of the sampling module, battery module, and functional module; the sampling module receives water samples from the target water layer and distributes them to the corresponding sampling bottles; the functional module controls buoy deployment and retrieval, sampling execution, anchor cable deployment and retrieval, and data acquisition. The three-point anchoring and lifting assembly adjusts the vertical position and balance of the main chamber assembly by deploying and retrieving the anchor cable using an anchor winch. This invention enables automatic sampling at fixed points, at fixed times, and across multiple water layers, offering advantages such as underwater submersion stability, convenient modular maintenance, and simultaneous multi-site sampling.