846 results about "Sediment" patented technology

The invention discloses an indoor water tank sediment starting speed measurement system and method, and aims to solve the technical problem that data accuracy is affected due to the fact that a sensor disturbs a flow field in an existing measurement method. The core of the technical scheme is that the non-contact measurement characteristic of the PIV technology is applied to the whole process from flow field construction to data acquisition. The device is mainly composed of an imaging unit, a laser lighting unit, a movable sliding frame, a water flow adjusting unit and a buffer plate. Optical measurement is carried out through the imaging unit and the laser illumination unit, a physical sensor does not need to be arranged in a flow field, and interference of a measuring instrument on a water flow structure and a sediment starting process is fundamentally avoided. The movable sliding frame which is integrally designed integrates the functions of sediment laying, particle throwing and measuring, so that a test area can be quickly positioned; and the buffer plate and the water inlet and drainage adjusting unit are combined, so that a gradually-changed flow field from weak to strong can be accurately and stably simulated.

The invention provides a digital twin model correction method and system based on machine vision. The method comprises the steps that a comprehensive data set is constructed by collecting sounding data, tidal flow velocity data and unmanned aerial vehicle images, wave disturbance deviation and water surface reflection distortion are eliminated based on geometric feature matching, and a dynamic compensation coefficient is generated in combination with tidal parameters; after time deviation of sounding data is corrected, a dynamic incidence relation between terrain elevation and sediment migration rate is calculated, a digital twinborn model fusing sedimentary layer thickness distribution and tidal flow velocity driven erosion boundary prediction is established, and a visual terrain curved surface is generated; through reverse verification of real-time sediment accumulation characteristics and terrain curved surfaces, migration rate weight parameters are adjusted in a self-adaptive mode, and dynamic optimization of the model is achieved. High-precision dynamic coupling simulation of sea area terrain evolution and sediment migration is achieved, the real-time performance and reliability of island surface change prediction are improved, and coastal zone safety and economic collaborative decision making is supported.

The invention relates to the technical field of hydraulic engineering safety monitoring, in particular to a safety monitoring method and system for a flood discharge and sand flushing service gate. The method comprises the steps that a super-strong permanent magnet sensor is installed on an underwater flood discharge and sand flushing service gate, and the magnetic attraction strength of the super-strong permanent magnet sensor is controlled according to real-time water flow; when the real-time water flow is larger than the preset water flow high threshold value, the magnetic attraction strength is enhanced; if the water flow is lower than the preset water flow high threshold value, the magnetic attraction strength is recovered to the standard magnetic attraction value; the ultra-strong permanent magnet sensor monitors vibration state data and dynamic stress data of each structure in the operation process of the underwater flood discharge and sand flushing service gate; obtaining a rigidity evaluation value and a dynamic stress safety evaluation value of the underwater flood discharge and sand flushing service gate; and performing evaluation in combination with the characteristic data in the operation process of the underwater flood discharge and sand flushing service gate to obtain the safety coefficient of the current underwater flood discharge and sand flushing service gate. The stability of the gate is dynamically enhanced, the magnetic attraction strength is matched with water flow impact in real time, and high-flow-speed loads are effectively resisted.

The invention relates to the technical field of sediment section sluicing, in particular to a sediment section sluicing change prediction method under the influence of a water gate. Acquiring a current erosion and deposition topographic sequence corresponding to the target gate at the current moment, and acquiring future rainfall-runoff data, future upstream and downstream water level difference and future tide level change data corresponding to the target gate within a future preset duration; determining future gate scheduling data corresponding to the target gate based on the future rainfall-runoff data, the future upstream and downstream water level difference and the future tide level change data; and inputting the current erosion and deposition topographic sequence, the future rainfall-runoff data, the future upstream and downstream water level difference, the future tide level change data and the future gate scheduling data into a preset erosion and deposition change prediction model, and outputting the silt fracture surface erosion and deposition change corresponding to the target gate in the future preset duration. And timely and reliable technical support is provided for hydraulic scheduling and risk management, and safe and efficient operation of the estuary tide gate is achieved.

The invention provides a deep-sea rare earth deposit mine collecting car and an operation method thereof. According to the method, a double-S-shaped reciprocating collection path is planned through an intelligent controller on the basis of a mining vehicle carrying a multi-stage collection device and aiming at the characteristic that deep sea rare earth is enriched in a sheet and multi-layer mode. According to the difference between the depth and compactness of the sediments, three stages of cutter suction units are adopted for layered collection: the first stage is used for 0-2m surface soft sediments, and the rotating speed of a reamer is 200-400r / min; the second stage is used for 2-4m middle-layer compact sediments, and the rotating speed is 350-600r / min; the third stage is used for 4-10m deep high-strength sediment, and the rotating speed is 500-700r / min. The terrain, posture and pressure are monitored in real time during operation, the posture, speed and obstacle avoidance of the vehicle body are automatically adjusted, and stable collection is achieved. The method has the advantages of accurate layering, comprehensive coverage, small environmental disturbance and high reliability, and is suitable for efficient, safe and environment-friendly collection of deep sea rare earth deposits.

Provided is an environment-friendly mobile collecting box for decoration cutting dust. The mobile collecting box comprises a box body, wherein a water tank is fixedly mounted on one side of the bottomsurface of the inner wall of the box body, the bottom surface and the outer side of the water tank are fixedly connected to the inner wall of the box body separately, the inner side of the water tankis fixedly connected to one side of the box body, and openings are formed in the top surface and the other side of the box body; a first through hole is formed in the bottom of the inner side of theinner wall of the water tank, a switching valve is disposed in the first through hole, and a second through hole is formed in one side of the box body; the interior of the first through hole communicates with the interior of the second through hole, and the second through hole communicates with the interior of the box body; the top surface of the water tank is fixedly connected to one end of a hose, and the other end of the hose is arranged in the box body, and a floating plate is fixedly mounted on the periphery of the other end of the hose. Sediment in the box body can be pushed directly into the garbage bag through cooperative use of a mud box and a garbage bag, and the mud box can be taken and placed freely; after the mud box is taken out, a sealing cap of the garbage bag containing the sediment is removed, and after the garbage bag is replaced by a new garbage bag, the mud box is put back, and the sediment is not in contact with the mud box, and cleaning of the mud box by a user is not needed, so that time and labor are saved.

The invention discloses a comprehensive detection processing and analysis method and system for a deep foundation trench of an immersed tunnel, and relates to the technical field of data processing, and the method comprises the steps: firstly carrying out the acoustic calibration of a multi-beam array in a foundation trench region, and compensating a beam incident angle and echo delay, so as to eliminate systematic sounding errors; then macroscopically scanning the foundation trench based on the corrected sounding equipment to generate a high-resolution three-dimensional point cloud, identifying abnormal elevation change in real time and dynamically adjusting the dredging depth; then multi-frequency acoustic detection is carried out on the silt sediment, a float sludge thickness cloud picture is drawn to evaluate a loose structure, and targeted compensation is carried out; finally, the topographic form and the sediment structure change are jointly used for construction early warning, a closed-loop system from precision calibration to anomaly detection to physical property diagnosis and risk early warning is formed, the precision and integrity of foundation trench depth measurement and sludge monitoring are remarkably improved, potential risks can be found and corrected in time in construction, and the construction efficiency is improved. And the construction safety and efficiency of the immersed tunnel deep foundation trench are guaranteed.

The invention discloses a slurry shield cutterhead nozzle arrangement method and system, and relates to the technical field of tunnel engineering and shield tunneling machines. The method comprises the steps that the total flow of nozzles and the number of the nozzles are determined, and the sediment critical starting flow speed is calculated; obtaining a flow velocity-target distance formula according to a water jet theoretical formula, boundary value conditions and a momentum flux conservation theorem; according to the total flow of the nozzles, the number of the nozzles, the sediment critical starting flow speed and the flow speed-target distance formula, the nozzle arrangement target distance is obtained; and arranging the nozzles according to the nozzle arrangement target distance. According to the method, the arrangement target distance of the nozzles of the slurry shield cutter head is integrally and effectively designed in combination with the water jet theory and the sediment starting mechanism.

The invention discloses a dredged sediment geopolymer mix proportion optimization method, device and equipment and a medium. The method comprises the following steps: acquiring dredging sediment geopolymer mix proportion key parameters and corresponding compressive strength data, and constructing a to-be-processed sample set; constructing and training a compressive strength prediction model based on the to-be-processed sample set, and determining a nonlinear mapping relation function of the dredged sediment geopolymer mix proportion key parameters and compressive strength data; constructing a target fitness function according to the nonlinear mapping relation function, the dredged sediment geopolymer production material cost and the production carbon emission; constructing constraint conditions according to the matching ratio key parameter range of the dredged sediment geopolymer, the use amount range of production materials and the volume of the dredged sediment geopolymer per cubic meter; and based on the target fitness function and the constraint condition, carrying out dredging sediment geopolymer mix proportion key parameter multi-target optimization through a genetic algorithm, and determining a dredging sediment geopolymer target mix proportion. And multi-objective optimization of the mixture ratio of the dredged sediment geopolymer is realized.

The invention relates to the technical field of underwater construction engineering, and discloses an underwater foundation horizontal bearing capacity evaluation method which comprises the following steps: acquiring the geometric dimension and material physical and mechanical properties of a foundation, geological information of a seabed soil sample, ocean current observation data and design wave elements; the maximum scouring depth around the foundation is determined according to ocean current observation data, wave elements and sediment mechanical properties; establishing a foundation-soil body three-dimensional bearing model, and substituting the foundation and soil body mechanical properties and the scouring size to obtain the foundation bearing capacity under each foundation diameter, burial depth, scouring depth and sediment property; according to the relationship between the foundation diameter, the burial depth, the scouring depth and the sediment property and the foundation bearing capacity, a correlation model is established, and the residual value of the foundation bearing capacity after scouring is calculated according to the correlation model. Based on the pile foundation bearing characteristic and the pile-soil interaction mechanical theory, the analysis method has the advantages of being clear in theory, wide in application range, high in reliability and the like. Analysis results are accurate and reliable, influence factors are comprehensively considered, and the method is more scientific.

The invention relates to the technical field of reservoir safety monitoring and early warning, in particular to a reservoir operation state prediction analysis method based on environmental data. The method comprises the following steps: collecting original resistance response sequences of reservoir bottom mud at different depths by adopting low-frequency alternating-current signals through a laid vertical resistivity probe array; performing polarization effect compensation processing on the original resistance response sequence to obtain a sediment resistivity layer spectrogram; collecting reservoir environment data; performing time sequence coupling analysis on the reservoir environment data and the sediment resistivity layer spectrogram to obtain a sediment stability influence factor spectrum; constructing a bottom mud layered structure model according to the bottom mud resistivity layer spectrogram and the bottom mud stability influence factor spectrum; and carrying out basic stress field calculation on the bottom mud layered structure model to obtain an initial stress distribution diagram. Through a full-chain technical route from sediment internal monitoring to multi-factor comprehensive analysis, the early warning timeliness, accuracy and reliability of reservoir sediment disasters are remarkably improved.

The present invention relates to a calculation method for the general scour pattern of a cross-sea bridge considering the turbulence effect. The research area including the cross-sea bridge project is determined and meshed, the elevations of each grid node are obtained, typical computational hydrological boundary conditions are selected, a non-hydrostatic three-dimensional mathematical model including the entire cross-sea bridge project is established, the hydrodynamic fields before and after the bridge construction are calculated, the tidal level and flow velocity are verified, the pulsating velocity at each grid node, the sediment settlement velocity in still water and the settlement velocity under the influence of turbulent kinetic energy are calculated, the sediment carrying capacity is calculated according to the estuarine fine sediment model, and finally the general scour amplitude of the seabed at each grid node position is calculated, thereby obtaining the characteristics of the general scour amplitude in the upstream and downstream areas of the bridge. Combining the plane three-dimensional numerical model and the sediment carrying capacity calculation method considering the turbulence effect, through the dynamic equilibrium theory, the accurate prediction of the general scour pattern of the cross-sea bridge including the depth and range is realized, and the calculation accuracy of the general scour pattern of the cross-sea bridge is improved.

The invention relates to an alkaline miscellaneous rock type niobium ore prospecting method, which belongs to the technical field of geological prospecting, and comprises the following steps: systematically carding regional geological structure evolution and stratum lithology distribution, and mastering the distribution range, rock type and geological age of alkaline miscellaneous rocks; a gravimeter is adopted for measurement, and gravity abnormal data are obtained; the method comprises the following steps: collecting sediment samples in a water system in a target area, analyzing the content of niobium in the sediment, collecting surface and deep soil samples in a niobium element enrichment area, analyzing the content of the niobium element, collecting remote sensing image data in the target area, highlighting geological information related to alkaline miscellaneous rocks, and calculating the content of the niobium element in the target area. Comprehensively analyzing the remote sensing image, and delineating a possible mineralization alteration area; establishing a comprehensive database, and delineating a target region with the highest prospecting potential; sampling is conducted in the delineated target area, and the ore body position, scale and grade of the alkaline miscellaneous rock type niobium ore are determined. By comprehensively applying various technical means, the prospecting accuracy and efficiency are improved.

The present invention discloses a sampling mechanism for detecting sediment content in water conservancy projects, belonging to the technical field of sampling mechanisms. The present invention comprises a support platform and a servo motor mounted on the upper end of the support platform, wherein the output end of the servo motor is connected to a sampling barrel, a retention hole is formed on the side of the upper end of the sampling barrel, and a water leakage cover is fixed inside the sampling barrel. A protective bottom cover is provided at the bottom of the sampling barrel, and a drain pipe is installed on the protective bottom cover. A first cylinder is mounted on the upper end of the support platform, and the telescopic end of the first cylinder is interconnected by a guide connecting rod and a closed ring, the closed ring is used to control the opening and closing of the retention hole, and a sand filter cloth is provided inside the water leakage cover. When sampling water samples, the sampling mechanism for detecting sediment content in water conservancy projects facilitates stirring of the surrounding water area to be sampled, thereby equalizing the sediment content of the water area and improving the accuracy of subsequent test results.

The application relates to the technical field of sediment sampling, and discloses a river water environment treatment and improvement device, which comprises a fixing frame, the inside of the top end and the bottom end of the fixing frame is provided with a sliding rail, the inside of the sliding rail is provided with a sampling assembly for collecting sediment, the sampling assembly comprises a bottom support column, the bottom support column is in sliding connection with the sliding rail, the top of the bottom support column is fixed with a supporting rod, the top of the supporting rod is fixed with a sampling cylinder, the surfaces on the two sides of the sampling cylinder are fixed with connecting blocks, the river water environment treatment and improvement device can intercept garbage and sundries in the sediment in the water body through a filter screen, the probability of garbage entering the inside of the sampling cylinder is reduced, the water flow is limited through the conical pipe shape, the water body shunted by the filter screen can be recombined, a certain flow rate can be maintained to wrap the sediment and enter the inside of the sampling cylinder, the precision of sampling sediment is improved, and the efficiency of water environment treatment is effectively improved.

The invention relates to the technical field of hydraulic engineering safety monitoring, and particularly discloses a reservoir dam safety assessment method based on strategy optimization, which comprises the following steps: collecting sediment accumulation rate and underground water level change rate data in real time through a distributed sensor network, and extracting multi-scale features by adopting variational mode decomposition and wavelet packet transformation; constructing a sedimentary anomaly characteristic value and a water level disturbance characteristic value in combination with the energy entropy and the fluctuation amplitude; fusing the two types of features into a dam body safety feature vector, inputting the dam body safety feature vector into a deep learning model for multi-dimensional risk assessment, and outputting a dam safety level; furthermore, a feedback control loop is constructed based on a digital twinning technology and a meta-learning framework, dynamic adjustment of monitoring frequency and an early warning threshold value and automatic generation of a reinforcement strategy set are realized, a closed-loop intelligent regulation and control mechanism is formed, and the real-time performance, the accuracy and the autonomous decision-making capability of dam safety management are improved.

An experimental apparatus for planar interfacial shear of a hydrate-bearing sediment includes a planar interfacial shear box, a torsional and axial loading device, a nitrogen gas source, a methane gas source, a pressure-volume controller, a water bath device, a back pressure valve, a gas-water separator, a gas flowmeter, and a data acquisition system. The planar interfacial shear box includes an upper pressing plate, an upper adapter, an upper thermal insulation plate, a ram adapter, a lower ram, an upper base, a lower base, a lower thermal insulation plate, a lower adapter, and a lower pressing plate that are coaxially connected in sequence from top to bottom. The experimental apparatus offers a simple specimen preparation method, enabling in-situ formation of a hydrate-bearing sediment in the shear box. The experimental apparatus ensures uniform stress distribution during shearing, and can acquire the interfacial shear mechanical characteristic between the hydrate-bearing sediment and a structure.

The invention discloses an intelligent cableway ADCP flow measurement method, system and device and a medium. The method comprises the following steps that measurement parameters are obtained; wherein the measurement parameters comprise the initial water flow velocity, the propagation velocity of the measurement sound waves in the sand-containing water body and the volume sand content; inputting the initial water flow velocity and the volume sand content into a preset first flow measurement model to obtain a first water flow velocity; inputting the propagation velocity and the volume sand content into a preset second flow measurement model to obtain a second water flow velocity; obtaining a difference value between the first water flow speed measurement and the second water flow speed measurement, and judging whether the difference value is smaller than a preset threshold value or not; if yes, outputting the average value of the first water flow velocity and the second water flow velocity as the final water flow velocity; if not, the credibility of the first water flow velocity measurement and the credibility of the second water flow velocity measurement are obtained respectively, the first water flow velocity measurement or the second water flow velocity measurement with the high credibility is output as the final water flow velocity measurement, and the method and the device have the advantages of being reliable in data and improving the measurement precision.

The application discloses an indoor water tank sediment starting speed measurement system and method, and aims at solving the technical problem of sensor disturbance to a flow field and influence on data accuracy in the prior art measurement method.The technical scheme core is that the non-contact measurement characteristics of the PIV technology are applied to the whole process from flow field construction to data acquisition.The device is mainly composed of an imaging unit, a laser illumination unit, a movable sliding frame, a water flow adjusting unit and a buffer plate.Optical measurement is performed through the imaging unit and the laser illumination unit, and physical sensors do not need to be arranged in the flow field, so that the interference of the measuring instrument on the water flow structure and the sediment starting process is fundamentally avoided.The integrated movable sliding frame integrates the sediment laying, particle throwing and measurement functions, and is convenient for quickly positioning a test area;in combination with the buffer plate and the water inlet and drainage adjusting unit, a gradually changing flow field from weak to strong can be accurately and stably simulated.

The invention discloses a pile foundation settlement detection method and system applied to gradient sediment, which is applied to the technical field of data processing and comprises the following steps: acquiring initial density data and conductivity data of sediment and penetration resistance data of a pile foundation; analyzing and identifying the profile map to obtain gradient density data; the profile map is obtained by cutting the three-dimensional image of the sediment in a selected direction; performing differential processing on the gradient density data to obtain density distribution information; performing mechanical characteristic enhancement processing on the penetration resistance data to obtain density continuous distribution information; determining a bearing capacity reduction coefficient based on the density continuous distribution information; performing feature extraction processing on the conductivity data to obtain a sediment activity index; and inputting the sediment activity index and the bearing capacity reduction coefficient into a pile foundation settlement calculation model to obtain pile foundation settlement data. According to the method provided by the invention, accurate detection of the settlement of the pile foundation can be realized.

The invention discloses a method for non-intrusive detection of pipeline sediments through a sound wave array, and belongs to the technical field of sound wave detection. The invention discloses a method for non-intrusive detection of pipeline sediments by a sound wave array. The method comprises the following steps: step 1, mounting a plurality of sensor groups on a detected pipeline in sequence; 2, acquiring historical flow velocity data and historical sound velocity data of each detection point of the detected pipeline under the deposition-free working condition through a sensor group; and 3, monitoring the flow velocity data of each detection point in real time according to each sensor group, comparing the flow velocity data monitored in real time with historical flow velocity data, and judging the deposition state of each detection point. According to the invention, the sonic sensor arrays distributed along the circumferential direction and the axial direction of the pipeline are adopted, and synchronous, in-situ, non-intrusive and real-time high-precision measurement of the sediment thickness, the three-dimensional space distribution form and the medium flow velocity is realized on the premise that the operation of the pipeline is not interfered.

The invention discloses a lake water and sediment collector based on water quality detection and a packaging device thereof. According to the device, liquid and gas in the sampling barrel are discharged by adopting the upper pressing block and the lower pressing block, a negative pressure environment is formed in the sampling barrel, a sediment sample in the sampling barrel is prevented from falling off after sampling is completed by utilizing a negative pressure adsorption principle, and the success rate of sediment sampling is improved. According to the device, the baffle is driven to be closed through the upper push rod and the lower push rod, and meanwhile, the upper pressing block and the lower pressing block enter the exhaust barrel, so that negative pressure is formed in the exhaust barrel and the sampling barrel, integration and synchronization of water sample and sediment sample sampling operation are formed, and the sampling efficiency of a drainage basin water system is improved; according to the integrated loading device provided by the invention, a plurality of acquisition instruments can be loaded in an integrated manner, single-time multi-quantity acquisition can be realized at a fixed-point acquisition position, and one end of the sampling barrel is inserted into the soil at the bottom of the lake in a manner of slidably mounting the clump weight capable of being beaten in the longitudinal sliding frame and pulling and putting down the rope from the lake surface.

The invention discloses a watershed sediment connectivity evaluation method based on an MATLAB platform and considering relative surface roughness. The method comprises the following steps: acquiring digital elevation model (DEM) data of a target watershed; obtaining a digital elevation model DEMF after depression filling based on the DEM; calculating a flow direction matrix FD; calculating a catchment area A of a catchment area above each DEM cell, and extracting water system position vector data S; calculating a surface roughness factor RRF and a surface undulation factor SLF based on the DEMF, and generating a surface relative roughness factor RRSF; calculating a weighted confluence path length DISTW based on the FD and the RRSF; calculating a sediment'source 'component Dup and a sediment'sink' component Ddown based on A, S, DISTW and FD; and calculating a connectivity index RIC of the target drainage basin based on the Dup and the Ddown. According to the method, the influence of micro-topography evolution of the erosion-driven drainage basin on the sediment connectivity can be more comprehensively represented.

The invention relates to the technical field of water environment monitoring and water ecological protection, solves the technical problem that hydrology, water quality, vegetation and bottom mud monitoring are mutually dispersed and are difficult to correspond in the prior art, and particularly relates to a lakeside microenvironment composite monitoring pile and an ecological disturbance evaluation method. The composite monitoring piles sequentially comprise an overwater area, a variable water level zone monitoring area and an underwater area in the vertical direction, the bottoms of the composite monitoring piles are fixed to bottom mud, the multiple composite monitoring piles are arranged according to the water depth gradient of 0-20 cm, 20-50 cm and 50-100 cm, a hydrodynamic force disturbance index and a microenvironment response index are established by comparing base line and disturbance working condition monitoring results, a composite ecological disturbance index is established, and the water level zone monitoring area and the water level zone monitoring area are located in the bottom mud. The method is used for quantitatively evaluating lakeside disturbance intensity and engineering measure effects. According to the method, quantitative and graded evaluation of the ecological disturbance degree of the lakeside zone is realized, and a scientific basis is provided for lakeside zone revetment form optimization, ecological restoration measure arrangement and water function zone management.

The invention discloses an operation real-time monitoring system based on risk factor dynamic assessment, and relates to the technical field of desilting operation risk assessment, the system can comprehensively assess various potential risks in the desilting operation process through multi-dimensional environmental data acquisition and real-time monitoring, and the risk factor dynamic assessment is realized. Comprise dam instability, water flow shearing force, sediment disturbance, soft foundation stability and the like. The system calculates comprehensive risk factors according to the data, timely identifies risks and triggers early warning, and ensures the safety of an operation area. The system can dynamically evaluate the soil liquefaction risk by monitoring the soil liquefaction factor and the volume change of the workboat in real time, and prevents the workboat from inclining or sinking. In addition, the system generates and implements specific emergency strategies according to different early warning instructions, and takes effective protective measures to deal with sudden risks. The safety and efficiency of the dredging operation are improved, the potential accident risk is reduced, and the sustainability of the dredging operation is guaranteed.

The invention relates to the technical field of hydrological survey, in particular to an intelligent survey buoy for the sand content of water resources and a survey method thereof.The intelligent survey buoy comprises a buoy body, a filtering assembly, a floating body and a gravity center adjusting assembly. The buoy body is of a hollow tubular structure, and a tubular cavity is axially divided into more than one filtering cavity; the filter plate divides the filter cavity into a water inlet cavity and a water outlet cavity; the pressure sensor is arranged at the lower end of the filter plate; the gravity center adjusting assembly adjusts the gravity center of the buoy body. A water inlet and a water outlet are formed in the opposite side walls of the buoy body respectively. The buoy is placed in a water area to be measured, at the moment, under guiding of the guiding assembly, the water inlet directly faces the water flow direction, the filter plate filters water resources entering the filter cavity through the water inlet and discharges the filtered water resources from the water outlet, and the pressure sensor can detect the amount and quality of sand located on the filter plate; meanwhile, the distance sensor and the angle sensor can promote the buoy body to stably suspend in a measured water area, so that the accuracy of a detection result is ensured.

The invention provides a decision-making method and system for the influence of water and sand linkage above a slope on the erosion amount below the slope. The system comprises an experiment control unit, an REE element layout unit, a dynamic monitoring network unit and a data acquisition and analysis unit. The experiment control unit comprises a parameterization experiment design module and a process sample dynamic sampling module, and the REE element laying unit comprises a layering marking module and a tracer agent selection and stability control module; the method not only objectively describes the temporal and spatial change rule of relative erosion amounts of different parts of the slope in the erosion occurrence process, but also can continuously analyze the influence of water and sand coming from the upper part of a certain section of the slope on the erosion process below, thereby dynamically judging and measuring the slope sediment source and analyzing the influence of water and sand linkage above on the erosion process below. The purpose of monitoring the sediment source and the soil erosion amount of different terrain parts is achieved.

The utility model discloses a silt deposition prevention pipeline for long-distance horizontal transportation, and relates to the field of long-distance horizontal pipeline transportation. The device comprises a horizontal pipeline, a connector, a stirrer and the like. The horizontal pipeline and the stirrer are connected through connectors, and the connectors are arranged on the left side and the right side of the stirrer to be connected with the horizontal pipeline to form a whole. Water flow flows into the stirrer through the horizontal pipe, the pipe diameter is enlarged, the water flow scours blades on the lower portion of the rotating paddle in the stirrer to drive the rotating paddle to work, other substances in the water flow are stirred, and sediment and the like are prevented from depositing.

The invention relates to the technical field of intelligent monitoring, and discloses a full-automatic sediment monitoring method and system.The method comprises the steps that a water sampling and distributing unit samples a target water area based on real-time sampling control parameters and conveys a sampled first water sample to a flow cell unit based on sampling control parameters; the flow cell unit simulates and forms a water sample monitoring water area environment matched with the target water area condition; the detection unit detects the water sample in the flow cell unit through a target detection method based on the detection control parameters to obtain a sediment detection result at least containing the sediment content; the reserved sample unit is used for extracting a reserved sample water sample for verifying the sediment detection result from the flow cell unit based on the reserved sample control parameters, and storing the reserved sample water sample and corresponding multi-dimensional water sample parameters. Therefore, the sediment condition of the related water area can be automatically and intelligently tested based on the full-automatic sediment monitoring system, and the testing efficiency and testing accuracy of the sediment condition can be improved.

The invention discloses a sediment collection and supply integrated device for offshore wind turbine pile foundation scour prevention, which is arranged around the periphery of an offshore wind turbine single pile foundation, relates to the technical field of offshore wind power engineering, and comprises an annular sand collection unit, a sand storage unit, a sand unloading unit and a sand supply guide unit which are communicated from top to bottom; the annular sand collecting unit guides sediment in ocean current to be deposited and collected, the sand storage unit receives and stores the collected sediment, and the sand unloading unit can seal a bottom outlet of the sand storage unit in an opening and closing mode; the sand supplementing guide unit directionally guides the discharged silt to the scouring pit; the mechanical triggering unit and the elastic resetting unit are used for opening and resetting the sand unloading unit. Sediment carried by ocean current is utilized, through pure mechanical passive operation, integrated self-circulation of collection, storage, triggering, release and supply of the sediment is achieved, external energy is not needed, the self-adaptive adjusting capacity is achieved, and the construction and operation and maintenance cost is remarkably reduced.