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85 results about "Water layer" patented technology

Water layer weathering occurs in pools of free-standing seawater contained on the platform surface, the water level being maintained by waves, spray, and tide action. On exposed coasts, the pools may lie up to 5m above sea level. Originally termed water-level weathering by Wentworth (1938), it referred to the layer of water in the pools.

Fishery sea area monitoring system based on satellite remote sensing

The invention discloses a fishery sea area monitoring system based on satellite remote sensing, and belongs to the technical field of fishery monitoring, and the system specifically comprises a remote sensing data acquisition module which obtains and preprocesses sea surface temperature, chlorophyll concentration and sea surface height abnormal data; the buoy data acquisition module synchronously acquires temperature-salinity profile data of the Argo buoy array, and the layout density of the Argo buoy array is dynamically adjusted along with historical fish catch and ocean frontal surface intensity; the space-time alignment module divides a time window through an orbital period, corrects space offset in combination with a buoy drift trajectory, sets a time buffer area based on a georotation flow rate and a satellite image resolution, and generates a space-time unified three-dimensional marine environment data set; the fishery suitability calculation module constructs a biophysical coupling model, correlates surface chlorophyll and subsurface thermohaline structures, and calculates the suitability index of each water layer; the fishery division module intelligently defines a core area and an edge area according to the index three-dimensional distribution characteristics; according to the invention, accurate fishery identification based on multi-source data fusion is realized.
Owner:SANYA INST OF OCEANOGRAPHY OCEAN UNIV OF CHINA

Semi-solid-state complex no-tillage dry direct seeding method for crop seeds

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.
Owner:HUNAN AGRI UNIV

Marine ecological regulation and control system

The invention discloses a marine ecological regulation and control system which comprises a lifting type pile leg, an ecological control cabin, a supporting truss and a hydraulic regulation and control supporting arm. The pile legs are fixed to the seabed, support the system and are adjustable in height. The supporting trusses are symmetrically distributed, are connected with the ecological control cabin and the pile legs and are provided with water inlets and water outlets; the hydraulic regulation and control support arm is connected with the lower end of the pile leg and extends to the near seabed to realize full-water-layer regulation and control. The system is provided with a power supply device and a light guide system, and the light guide system conveys natural light to an underwater irradiation probe through a light guide plate, a sunlight collector and an optical fiber to realize deepwater light supplement. The circulating water system is composed of a water pump and a pipeline and drives double-layer water to circulate. The control system integrates monitoring and intelligent regulation and control functions, and links all parts to operate. According to the invention, the whole water layer marine ecological protection and regulation effect from shallow water circulation to deep ecological restoration is improved, the illumination compensation, water exchange and energy self-sufficiency capabilities are enhanced, and the automation, intelligence and long-term operation level of the system are improved.
Owner:SOUTHERN MARINE SCIENCE & ENGINEERING GUANGDONG LABORATORY (ZHANJIANG)

Power transmission flexible bus

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.
Owner:YANG HUA KE CHUANG (SHEN ZHEN) XIN NENG YUAN ZHUANG BEI YOU XIAN GONG SI

A low-contrast reservoir fluid identification method, system, device and medium

The present invention discloses a method, system, device, and medium for identifying fluids in low-contrast reservoirs, including: obtaining the true formation resistivity RT1D based on the resistivity curve from array sensing; obtaining the ratio coefficient Br of the true formation resistivity RT1D and the deep lateral resistivity RT; determining oil and gas layers and water layers by intersecting the logging acoustic wave time difference curve, porosity curve, and the ratio coefficient; obtaining the movable fluid T2 geometric mean based on the long nuclear magnetic resonance echo interval; and identifying the oil, gas, and water layers of the fluid based on the ratio coefficient Br and the movable fluid T2 geometric mean. The present invention uses the array sensing inversion formation resistivity and deep lateral ratio coefficient method, and the intersection diagram of the movable fluid T2 geometric mean and the array sensing inversion formation resistivity to comprehensively identify fluid properties, effectively solving the problem of identifying fluid properties in low-contrast reservoirs in coastal areas. The method of the present invention is simple, practical, highly operational, and has good application effects.
Owner:CHINA NAT PETROLEUM CORP +1

Fish collection and attraction system for fish ladders

PendingCN122649358AMarine engineeringPhototaxis
The present application provides a kind of fish collection and fish luring system of fish passage, including fish blocking electric fence and fish passage;Fish passage is set in the downstream of dam and is close to the shore side, and the one end of fish passage is provided with water inlet, and the other end of fish passage is provided with water outlet, and water inlet is towards the water outlet of dam;Fish blocking electric fence is fixedly connected in the water outlet side away from the shore and extends along the direction away from water inlet, and fish blocking electric fence is used to form electric field below water surface.Combining fish blocking electric fence electric field drive, fish counter-current upstreaming habit and near-shore swimming law, fish group is accurately guided to enter fish passage, and fish luring effect is strengthened with fish luring lamp, to solve the problem of low efficiency of traditional passive phototaxis fish luring.Collaborate water level sensing device and lifting mechanism, can automatically adjust the height of electric fence according to real-time water level, to ensure that electrode stick is always in the main upstreaming water layer of fish, and electric field fully covers effective water layer, without manual intervention.
Owner:YANGTZE RIVER WATER CONSERVANCY COMMISSION LAND & WATER EXPERIMENTAL HUB MANAGEMENT BUREAU +1

Anti-salt solar seawater desalination system based on reverse distillation of low heat capacity water layer

The present invention discloses a salt-resistant solar desalination system based on reverse distillation of a low-heat-capacity water layer, which belongs to the field of solar desalination. The present invention is composed of a transparent cover plate, a light-absorbing plate, a hydrophobic breathable membrane, a support net, a condensation plate, a side plate, a water supply bottle, a water supply pipe, etc. When the system is working, the light-absorbing plate absorbs sunlight and converts it into heat energy to heat the seawater in the water layer. The steam generated by the downward evaporation of seawater passes through the hydrophobic breathable membrane and the support net in turn and is finally condensed on the condensation plate. While the seawater evaporates, the seawater in the high-position water supply bottle is automatically replenished into the water layer, continuously supplying seawater to the water layer. The seawater inlet is located at the lowest position by a tilting device, which promotes the uniform distribution of seawater salinity in the water layer and reduces the risk of salt formation; the seawater outlet is set and a valve is installed to control the discharge of seawater before saturation to achieve sustainable distillation; the latent heat of steam condensation is recovered by setting a multi-stage stacked structure to improve the energy utilization efficiency of the system.
Owner:BEIJING INST OF TECH

Underwater profile water sample automatic collection device capable of setting trigger pressure

PendingCN121954562AAccurate automatic collectionImplement adjustable functionalityWithdrawing sample devicesUnderwater vesselsGear wheelCam
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.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Short-term and accurate prediction method of tuna longline fishing center and hooking route based on middle layer water temperature and ocean current spatial characteristics

ActiveCN114819269BDelicately characterize environmental elementsAccurately grasp the rules of changeForecastingMarine engineeringFishing
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.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1

Underwater clean automatic sampling system

The invention belongs to the technical field of underwater automatic sampling, and particularly relates to an underwater clean automatic sampling system which comprises an in-situ filtering and storing device, a rotary valve device, a first sea water pump, a flow meter, a pressing cover, a connecting rod and a mounting frame. A plurality of layers of in-situ filtering and storing devices with the same structure are stacked on the rotary valve device, a pressing cover is arranged above the in-situ filtering and storing device on the uppermost layer, the pressing cover is connected with the mounting frame through a connecting rod, and each layer of in-situ filtering and storing device is clamped and fixed. The automatic sampling system disclosed by the invention can be used for automatically switching and sampling in water layers with different depths, and the multi-layer in-situ filtering and storing device is provided with an independent water inlet, so that deep sea in-situ filtering and storing are realized; the influence of the change of environmental parameters such as temperature and pressure on the diversity of planktonic microflora and gene expression after the deep sea sample reaches the sea surface is solved.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

A floating monitoring station for water quality detection

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.
Owner:TAIZHOU CHENGXING ENVIRONMENTAL TESTING TECH CO LTD

Basic scouring real-time monitoring system and method based on time domain reflection technology

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.
Owner:CCCC THIRD HARBOR ENGINEERING CO LTD

Preparation method of solar concentrating resin

InactiveCN105061753AImprove efficiencyQuality improvementSolventMethoxypropane
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.
Owner:31HK CO LTD

Offshore multi-water-layer multi-parameter water quality detection device

The invention discloses an offshore multi-water-layer multi-parameter water quality detection device which comprises a control device, a power supply system and a water pumping detection device, the control device is used for controlling the water pumping detection device to operate; the water pumping detection device comprises a container, a pump body, a multi-parameter water quality sensor, a connecting pipe and a plurality of water taking pipes; the plurality of water taking pipes are respectively communicated with the container, and the lengths of the plurality of water taking pipes are different; the multi-parameter water quality sensor is used for detecting parameters of a water source in the container; one end of the connecting pipe communicates with the container, the other end of the connecting pipe is connected with an inlet of the pump body, the connecting pipe is provided with a branch pipe, one end of the branch pipe communicates with the connecting pipe, and the other end of the branch pipe communicates with the outside; a first battery valve is arranged on the branch pipe, and a second battery valve is arranged on each water taking pipe; the offshore multi-water-layer multi-parameter water quality detection device is low in cost, and the problem of marine organism attachment of the water quality detection sensor is solved because the water quality detection sensor does not need to be soaked in seawater for a long time.
Owner:GUANGDONG MODERN AGRI EQUIP RES INST +1

River and beach surface soil body exhausting and danger removing device and method

The invention provides an exhausting and danger removing device and method for river and beach surface soil. The device comprises an exhausting solid pipe section and an exhausting floral pipe section which are connected with each other. The bottom of the exhaust solid pipe section is buried in a river beach weak permeable soil layer, the top end is provided with a top sealing plate for preventing rainwater from entering, and the top side is provided with a horizontal exhaust hole higher than the designed flood level for exhausting; the top of the exhaust floral pipe section is connected with the bottom of the exhaust solid pipe section, the periphery of the exhaust floral pipe section is wrapped with nylon gauze and filled with inverted filter sand to form an inverted filter system to prevent sand from entering, and the bottom of the exhaust floral pipe section is provided with a bottom sealing plate to prevent soil particles from entering the pipe and ensure that gas is collected and exhausted. When the water level of a rainstorm river suddenly rises to form gas sealing after long-term drought, pressure gas generated by'water-gas displacement 'of a sandy gravel stratum can be discharged, 'cavitation' damage of a surface soil body of an embankment beach land is prevented, the anti-seepage function of an aquitard is protected, and the flood prevention safety of the embankment in the flood season is guaranteed.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

A fishery sea area monitoring system based on satellite remote sensing

The present invention discloses a fishery sea area monitoring system based on satellite remote sensing, which belongs to the field of fishery monitoring technology and specifically comprises: a remote sensing data acquisition module that acquires and pre-processes abnormal data on sea surface temperature, chlorophyll concentration and sea level height; a buoy data acquisition module that synchronously acquires temperature and salinity profile data of an Argo buoy array, and whose deployment density is dynamically adjusted according to historical fish catch and ocean front strength; a spatiotemporal alignment module that divides a time window by orbital period, corrects spatial offset in combination with buoy drift trajectory, sets a time buffer interval based on geostrophic velocity and satellite image resolution, and generates a spatiotemporally unified three-dimensional ocean environment data set; a fishery suitability calculation module that constructs a biophysical coupling model, associates surface chlorophyll with subsurface temperature and salinity structure, and calculates the suitability index of each water layer; a fishing ground division module that intelligently demarcates core areas and edge areas based on the three-dimensional distribution characteristics of the index; the present invention realizes accurate identification of fishing grounds based on multi-source data fusion.
Owner:SANYA INST OF OCEANOGRAPHY OCEAN UNIV OF CHINA

A monitoring device for a water sealing layer of a shaft underwater structure

This invention belongs to the field of downhole monitoring technology for vertical shafts, specifically a monitoring device for underwater construction of a water-sealing layer in a vertical shaft. It includes a ground control device connected to a downhole monitoring end via a cable, which is moved by a hoisting device. The downhole monitoring end includes a protective casing and a monitoring instrument. A mounting column is installed on the monitoring instrument, and the protective casing is fitted over the monitoring instrument via the mounting column. The monitoring instrument includes at least the functions of detecting liquid level, temperature, and image capture. A mounting frame is installed at the opening below the protective casing, and a release paper is installed on the mounting frame. An elastic sheet is installed on the side of the protective casing, and an arched rod is installed below the mounting frame. This invention has a simple structure, and the monitoring instrument is used to monitor the construction of the water-sealing layer in real time during grouting, ensuring good grouting and water-sealing effects, and protecting the monitoring instrument from collisions with the well wall or other objects.
Owner:SHANDONG TIANDUN MINING EQUIP

Offshore bottom water thin mutual reservoir fracturing parameter design method

The invention provides an offshore bottom water thin mutual reservoir fracturing parameter design method, and relates to the technical field of oil and gas exploitation, the method comprises the following steps: S1, determining vertical distribution of a reservoir section mud layer, a sandstone layer and a water layer according to logging data, and establishing a target well section crustal stress and rock mechanics profile; s2, acquiring the fracture toughness of rocks with different shale contents under different stresses to obtain a corrected fracture toughness profile; s3, according to the fracture half length, the fracturing displacement, the critical mudstone layer penetrating thickness corresponding to the fracturing fluid viscosity and the penetrating layer fracture height of the reservoir are initially calculated, and parameters needed for avoiding a water layer and fully transforming a thin interbed are obtained; s4, according to the fracture flow conductivity, the sand amount and the sand-carrying fluid amount are calculated initially; s5, the liquid efficiency is determined according to block fracturing historical data, the prepad fluid proportion range is initially calculated, and the prepad fluid amount is calculated; and S6, optimizing parameters through numerical simulation, and determining final fracturing parameters and a pump injection program. According to the method, the requirements of geological and offshore construction can be met, and the optimal fracturing scheme and the optimal pumping program can be rapidly determined.
Owner:CNOOC TIANJIN BRANCH

Shallow water multiple suppression method and device and computing equipment

The embodiment of the invention discloses a shallow water multiple suppression method and device and computing equipment. The method comprises the following steps: acquiring frequency spectrum data of a plurality of seismic traces; for any seismic channel, smoothing the frequency spectrum data of the seismic channel to generate a smooth frequency spectrum of the seismic channel; for any target seismic trace, determining an adjacent seismic trace of the target seismic trace, and generating a seabed wavelet spectrum corresponding to the target seismic trace after performing correction processing on the smooth frequency spectrum of the target seismic trace by using the smooth frequency spectrum of the adjacent seismic trace; and generating a water layer multiple model based on the seabed wavelet spectrum of each target seismic channel. By adopting the scheme, the pressing effect and the pressing efficiency of the multiple waves of the water layer in the shallow water environment can be greatly improved.
Owner:CHINA OILFIELD SERVICES LTD

A bottom-set net cage with segmented lifting control

The present application relates to a kind of bottom-supported net cage of segmented lifting control, comprising: net cage body, and variable buoyancy cabin is arranged at the bottom of net cage body;Air pipe, one end of the air pipe is connected to the variable buoyancy cabin;Air pump, the air pump is connected with the end of the air pipe extending to sea surface;First drain pipe, one end of the first drain pipe is arranged in the first preset position in the variable buoyancy cabin;First switch valve, the first switch valve is arranged on the first drain pipe;First counterweight, the first counterweight is connected to the bottom of the net cage body;Second counterweight, the second counterweight is connected to first counterweight by the rope of preset length.Net cage body will hover in the water layer at a certain distance from the sea bottom during floating, so that the cultured fish in the net cage body has sufficient time to adapt to pressure change, and reduces the risk of rising air bladder to cultured fish caused by huge pressure difference.
Owner:FISHERIES RESEARCH INSTITURE OF FUJIAN

Method and apparatus for predicting multiple waves in seabed nodal multi-component data of water layer

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.
Owner:CHINA OILFIELD SERVICES LTD

Supergravity test device and seabed shield segment deformation evaluation and prediction method

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.
Owner:CHINA CONSTR FIFTH ENG DIV CORP LTD +1

Water sampler

The invention discloses a water sampler, and aims to provide a water sampler which can effectively solve the problem that the actual water layer depth of a water sample collected by the water sampler is greatly different from the set water layer depth due to inclination of a pulling rope of the water sampler due to the influence of ocean current. The consistency of the actual water layer depth and the set water layer depth of the collected water sample is effectively improved. The device comprises a floating frame; the lower barrel and the upper barrel are communicated with each other, the inner diameter of the lower barrel is larger than that of the upper barrel, the upper barrel is fixedly connected to the floating frame, and a vertical flow guide groove is formed in the upper portion of the inner wall of the upper barrel; the upper piston is arranged in the upper cylinder body in a sliding manner; the lower piston is slidably arranged in the lower cylinder, and a matching column is arranged at the lower end of the lower piston; the loading cylinder is connected to the lower end of the lower cylinder body, and a separable bottom cover is arranged at the lower end; the counterweight is supported on the bottom cover; when the lower piston moves upwards by a set distance, the bottom cover moves downwards to be opened, and the balance weight is released.
Owner:MARINE FISHERIES RES INST OF ZHEJIANG

An upright offshore surface oil collection device and method

The present application relates to the technical field of marine ecological environment investigation, more specifically, it particularly relates to a vertical offshore surface oil collection device and a collection method, which comprises a support frame, two first grooves are arranged at the bottom of the support frame, a limiting assembly is movably connected to the two side arms of the support frame, an operating rod is detachably connected to the center of the top arm of the support frame, and a sealing assembly is arranged on the two sides of the operating rod and penetrates the top arm of the support frame; a wheel disc is arranged at the top end of the operating rod, the wheel disc is coupled to two pull ropes, and the other ends of the pull ropes are connected to the sealing assembly. The telescopic adjustment of the operating rod can drive the support frame to sample on the sea surface, the length of the operating rod can be adjusted according to the size of the ship during sampling, the vertical sinking of the water surface 0-1.0 m water layer can be realized to collect surface oil samples, the disturbance to the water layer during sampling can be reduced, and the mutual pollution between samples during continuous sampling can be avoided by clamping the sampling bottle plug with the sealing cover.
Owner:BEIHAI MARINE ENVIRONMENT MONITORING CENT STATION OF SOA

A method for evaluating hydrodynamic response of flexible floating structure considering equivalent effect of upper layer stagnant water

PendingCN122334116AStructural waterPressure jump
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.
Owner:TIANJIN RES INST FOR WATER TRANSPORT ENG M O T

Artificial intelligence-based river regulation data analysis and management system and method

PendingCN121936699Achange logicavoid silosGeneral water supply conservationResourcesHydrometryData stream
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.
Owner:SHANGHAI QUANQI WATER ENG DESIGN CO LTD

Repair structure for concrete leakage position

The repairing structure for the concrete leakage position comprises a crack, and a sealing layer, a sealing layer and a temporary water plugging layer which are arranged layer by layer from the interior of the crack to the exterior; the crack comprises an original crack and a straddle groove, the straddle groove is formed in the surface of concrete, the sealing layer is smeared and compacted at the joint of the straddle groove and the original crack, the original crack is filled with the sealing layer, and the straddle groove is filled with the temporary water plugging layer. The service life of underwater structure leakage repairing can be prolonged.
Owner:CHINA YANGTZE POWER

Monitoring equipment for sand groundwater protection and use method thereof

The invention relates to the technical field of underground water protection, and discloses monitoring equipment for sand land underground water protection and a using method thereof.The monitoring equipment comprises a surface water collecting unit, a water conveying pipeline, a water quality online monitoring module, a central control module and a flow regulation and control executing mechanism; the central control module controls the flow regulation and control execution mechanism through water quality parameter data monitored by the water quality on-line monitoring module, and when the detection result of the water quality on-line monitoring module is qualified, a first control instruction is generated and sent to the flow regulation and control execution mechanism, so that the flow regulation and control execution mechanism is kept open or regulated to preset supply flow; when the detection result of the water quality on-line monitoring module is unqualified, a second control instruction is generated and sent to the flow regulation and control executing mechanism, and unqualified water is prevented from converging into the deep water layer from the water conveying pipeline; by arranging the water conveying pipeline communicating the shallow water layer with the deep water layer, sand surface water is guided into the deep water layer, evaporation of the surface water is reduced, and the water content of the sand deep layer underground water is increased.
Owner:乌审旗水利事业发展中心

Marine ecological regulation system

ActiveCN224684837ULight guideControl system
The utility model discloses a kind of marine ecological regulation systems, including lifting type pile leg, ecological control cabin, support truss and hydraulic control branch arm. Pile leg is fixed to seabed, support system and can be adjusted height;Support truss is symmetrically distributed, connects ecological control cabin and pile leg, and is equipped with inlet and outlet;Hydraulic control branch arm connects the lower end of pile leg, extends to near seabed, realizes whole water layer regulation and control. System is equipped with power supply device and light guide system, latter natural light is transported to underwater irradiation probe by light guide plate, sunlight collector and optical fiber, realizes deep water light compensation. Circulating water system is constituted by water pump and pipeline, and double-layer water body is driven to circulate. Control system integrates monitoring and intelligent control function, and links each component operation. The utility model realizes the whole water layer marine ecological protection and regulation and control effect promotion from shallow water body circulation to deep ecological restoration, enhances light compensation, water exchange and energy self-sufficiency, and improves system automation, intelligentization and long-term operation level.
Owner:SOUTHERN MARINE SCIENCE & ENGINEERING GUANGDONG LABORATORY (ZHANJIANG)

Beam structure for adjusting the water layer variation of an Antarctic krill trawl net

ActiveDE602020061931T2Fishing netsFisheryOceanography
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI