112 results about "River sediment" patented technology

The invention discloses a river sediment multi-parameter sensing self-adaptive sampling method and system, and relates to the technical field of environment monitoring, and the method comprises the following steps: S1, synchronously collecting the pH value, electrochemical potential, heavy metal binding state proportion, water body flow velocity and hydrodynamic parameters of sediment through a sensing device, and establishing a multi-parameter response baseline; and S2, based on the multi-parameter response baseline, collecting monitoring data in real time and executing differential analysis, and identifying a high-risk time period when the pH value change rate exceeds a threshold value and the heavy metal binding state proportion fluctuates. By constructing a multi-parameter response baseline and a linkage recognition mechanism, early sensing and accurate sampling of heavy metal release are realized, a closed-loop response system is constructed by combining chemical form analysis, self-correction and data feedback optimization recognition model, and the accuracy and intelligent level of pollution monitoring are improved.

The invention discloses a river sediment scouring and silting simulation method, and belongs to the technical field of hydraulic engineering and hydrological simulation. In order to solve the problem that it is difficult to accurately simulate the river sediment erosion and deposition evolution trend in the prior art, the method comprises the steps that on the basis of actually measured topographic data and channel chart data of a target river reach, a water-sediment coupling mathematical model is constructed by adopting a non-uniform sediment unbalance sediment transportation theory, and the model interacts with a water power module and a wave module in real time through an MCT coupler; actually measuring a flood and water and sediment series data calibration verification model; and obtaining future water and sediment process data predicted by a plurality of climate modes, inputting the future water and sediment process data into the verified model, dividing river reaches according to the characteristics such as riverbed gradient and river channel curvature, and calculating the erosion and deposition amount of each sub-river reach in the future 50 years. The method can simulate water flow and sediment movement of rivers, reservoirs and lakes, can be applied to the fields of riverway regulation planning, flood control and disaster reduction decision making, reasonable development and utilization of water resources and the like, and provides important data support and scientific basis for construction and management of water conservancy projects.

The invention provides an in-situ curing and repairing method for heavy metals in river sediment. The in-situ curing and repairing method comprises the following steps: S1, detecting the content and physicochemical properties of the heavy metals in the river sediment; s2, designing a repair material formula; s3, preparing and putting a repairing material; s4, mixing and stirring the bottom mud and the repairing material; s5, monitoring and evaluating the repairing effect; and S6, repairing effect feedback and adjustment. According to the method, multiple linear regression, curved surface fitting, self-organizing mapping and mixed density network algorithms are fused, the sediment heavy metal content and physicochemical property data are fully utilized, a repair material formula can be accurately designed, and compared with a traditional single algorithm or empirical formula design, the repair material proportion can better fit the actual pollution condition, and the repair efficiency is improved. The utilization rate of repair materials is improved.

The invention provides a river sediment physical habitat evolution identification method, device and system and a medium. The method comprises the following steps: acquiring a multi-temporal remote sensing image and hydrological data (flow Q, water level Zw and slope S), screening and other hydrological condition image pairs; extracting a water surface range, and calculating the average width B of the main groove; deducing the average water depth h by using a Manning formula, and calculating the riverbed elevation zbed by combining the Zw; the difference value delta zbed of zbed in different periods is calculated, and the substrate state is judged according to the difference value delta zbed and a threshold value epsilon; and performing segment processing along the center line to output a spatial distribution result. On-site measurement is not needed by relying on conventional data, and consumption is reduced; water level interference is eliminated through equal hydrological condition matching, and comparability is ensured; water depth inversion and differential analysis directly reflect scour deposition and quantitatively reveal rules; long-distance automatic processing improves space-time coverage capability and precision, and provides a basis for river regulation, ecological restoration and drainage basin management.

The invention provides a drainage basin sediment prediction method, which comprises the following steps of: sorting various kinds of collected basic data of a target drainage basin into a grid form, carrying out unified space registration, and dividing the basic data based on a small drainage basin boundary serving as a sediment prediction space unit; for each small watershed, respectively predicting gravitational erosion, debris flow erosion, channel erosion and slope erosion to obtain future spatial and temporal distribution of various erosion amounts and the total erosion amount in the target watershed; for the four types of erosion, the future sediment yield and deposition rate of the small watershed scale are calculated respectively; and on the basis of the future sediment production, the small watershed suspended load sediment transport amount in the main river water system is calculated section by section according to the upstream and downstream relation of the convergence river position of each small watershed in the target watershed, and distribution of the suspended load sediment transport amount in the flowing direction of the main river water system is predicted in combination with sand digging, reservoir sedimentation and the input amount and the output amount of the suspended load in the river reach. The method can predict the sediment space-time distribution in the basin erosion and basin sand-producing river sediment transportation multi-physical process.

The invention discloses a deposition numerical simulation acceleration method, device and equipment, and relates to the technical field of oil-gas exploration and development and artificial intelligence crossing. The method comprises the steps of determining a control equation of river deposition; constructing a physical information neural network; adding a low-rank adapter in a hidden layer of the physical information neural network; a training data set is obtained, wherein the training data set comprises water and sediment movement elements of different monitoring points at different time; embedding the control equation into the loss function in a residual form; according to the training data set, training the physical information neural network added with a low-rank adapter by taking the minimum loss calculated by the loss function as a target, and adjusting hidden layer parameters to obtain a trained physical information neural network; and inputting the space coordinates and the prediction time of the to-be-simulated river into the trained physical information neural network to obtain water and sediment motion elements of the to-be-simulated river in different space coordinates and different prediction time in the deposition process. According to the invention, the deposition process can be efficiently and accurately simulated.

The invention provides a multi-temporal-spatial-scale river sediment tracing method, and relates to the field of geomorphology and river dynamics. According to the method, light release light (OLS) samples of terraces and floodplains and zircon sand samples of corresponding layers are collected on the sections of a source (branch) and a sink (main stream), and different age sequences are divided in combination with contemporary zircon sand samples of a tender beach; the contribution rate of a source to a sink is directly calculated by using a zircon age spectrum matrix, and a quality contribution rate algorithm is optimized in combination with a zircon mass percentage. According to the method, contemporary and historical multi-time-scale sediment traceability is realized, the traditional fitting simulation process is simplified, the calculation efficiency and accuracy are improved, and the method is suitable for sediment source analysis in areas poor in data.

The invention discloses PVA fiber reinforced Yellow River sediment geopolymer concrete as well as a preparation method and application thereof, and belongs to the technical field of concrete. According to the concrete, fly ash and slag powder are used as precursors, an alkali activator is used for excitation, Yellow River silt is used for replacing 10-40% of natural river sand to serve as fine aggregate, and PVA fibers with the volume fraction being 0.2-0.8% are doped for reinforcement and toughening. The water-glue ratio is 0.45, the bone-glue ratio is 3.0, and the sand ratio is 40%. The preparation method comprises the steps of alkali activator preparation, dry mixing, wet mixing, fiber dispersion, forming and curing. The material can be applied to hydraulic engineering, building structures and road engineering, and has the advantages of excellent mechanical properties, low carbon, environmental protection, resource utilization of Yellow River silt and the like.

The utility model provides a lake and river sediment particulate matter collecting device, which belongs to the field of hydrogeological technical engineering, is used for solving the problems that in the prior art, the efficiency is low in the lake and river sediment sampling process, and interference is caused by the influence of manual operation on sediment resuspension, and comprises a collector fixing seat and a collector, the collector fixing seat is divided into the counterweight piece and the supporting fixing piece, so that the collector is kept in a vertical state in the sinking process and when the collector is fixed in lake or river sediment; the collector is divided into the collecting barrel body and the collecting barrel cover, the closed ring is arranged in the center of the top end of the collecting barrel body, the collecting barrel cover is designed into a plurality of cover bodies, the bottom ends of the cover bodies are hinged to the top end of the barrel wall of the collecting barrel body, and the top ends of the cover bodies are fixedly connected with the recycling ropes. The recovery rope drives the plurality of cover bodies to be closed at the same time, so that closing of the collection barrel cover and recovery of the device are completed, the sampling efficiency is improved, and interference caused by resuspension of bottom mud is reduced.

The present invention discloses an in-situ permeable ecological revetment structure prepared from polluted riverbed mud, comprising a base layer group, a seepage purification layer group, a bottom anti-seepage layer group, a polluted sediment main layer group, and an ecological planting layer group. The base layer group comprises a first revetment foundation, a second revetment foundation, a gravity retaining wall, and a riverbed slope protection. The seepage purification layer group is arranged on the gravity retaining wall. The seepage purification layer group comprises a permeable reaction wall, which is used to filter harmful substances in the accumulated water. The polluted sediment main layer group comprises multiple polluted sediment layers and multiple waste biomass material layers. The ecological planting layer group comprises ecological concrete, planting soil, and herbaceous plants. By adopting an in-situ treatment method to dispose of the polluted sediment in the river, utilizing the interception effect of the permeable reaction wall on pollutants and the purification effect of plants, the concentration of pollutants that seep into the river from the polluted sediment main structure can be effectively reduced, thereby realizing the in-situ resource utilization of the polluted riverbed mud.

The invention relates to the technical field of river sediment monitoring, in particular to a system for monitoring the sediment content of a river in a sandy and coarse sand area, and aims to solve the problems that the sediment content monitoring deviation is large due to sedimentation and shielding of coarse particles in the river in the sandy and coarse sand area and long-term abrasion of a sensor, and a traditional method does not cooperatively process dual interference. Penetration signals and coarse particle sedimentation characteristic signals are synchronously collected through double-frequency-band ultrasonic waves and transmitted after time synchronization, the dynamic particle size inversion unit inverts the coarse particle distribution proportion according to the signal attenuation rate, shielding virtual contribution is removed through an interference compensation algorithm, a sand content correction value is output, and the sand content is calculated. And the sensor wear compensation unit determines an attenuation correction coefficient by using the resonant frequency deviation of the piezoelectric ceramic vibrating reed, performs wear compensation on a correction value, and finally outputs accurate sand content data through data quality verification, temperature compensation and dimension normalization processing, thereby effectively eliminating the dual influences of coarse particle shielding and equipment wear, and improving the accuracy of sand content measurement. And the river sand content monitoring precision in the sandy and coarse sand area is improved.

The utility model relates to the technical field of river sediment, and discloses a river sediment sampling device which comprises a fixing rod, a fixing plate is fixedly arranged in the fixing rod, a spring is arranged at the top of the fixing plate in the height direction, a sliding block is fixedly connected to the bottom end of the spring, and the sliding block is installed in the fixing rod in a sliding mode. A sampling barrel is inserted into the sliding block, a connecting rope is fixedly connected to the top end of the sampling barrel, the other end of the connecting rope is fixedly connected with the bottom end of the fixing plate, a fastener is fixedly arranged on the outer side of the fixing rod, and one end of the fastener is buckled with the inner wall of the sliding block. The sampling barrel can push the sliding block to be buckled with the fastener, so that the spring deforms, then the lengthening rod and the fixing rod are spliced, the sampling barrel is located at the bottom of a river channel, then the fastener and the sliding block are separated through a pulling structure, and the deformed spring can push the sampling barrel to pop out so as to be inserted into sludge, so that the sampling barrel is sampled, and the use is convenient.

The present invention relates to a soil-sediment organic carbon enrichment factor estimation method based on reflectance spectroscopy, comprising: collecting river sediment samples and soil samples respectively, measuring the organic carbon content and calculating the measured organic carbon enrichment factor; measuring the sample reflectance spectrum to obtain reflectance, and screening the organic carbon key response bands of the sediment and soil reflectance spectra respectively; constructing an organic carbon enrichment factor spectral index based on the key response band, and constructing a soil-sediment organic carbon enrichment factor spectral estimation model based on the measured organic carbon enrichment factor and the spectral index; collecting sediment samples and soil samples to be tested, measuring the reflectance spectrum respectively, calculating the organic carbon enrichment factor spectral index and inputting it into the estimation model to obtain the soil-sediment organic carbon enrichment factor. The method of the present invention can quickly estimate the organic carbon enrichment factor of the soil-sediment in the basin, obtain the enrichment characteristics of local nutrients, and provide technical support for soil and water conservation, eutrophication and the realization of dual carbon goals.

The application discloses a kind of long-time sequence monitoring method and system of suspended load sediment concentration based on multiple river section scales, and relates to river monitoring technical field.The method includes the following steps: obtaining long-time sequence multispectral remote sensing image data and environmental data of the river to be detected, and pre-processing the multispectral remote sensing image data;According to the pre-defined river boundary, divide the river section, and extract the water body pixels of each river section by water surface extraction method;Using median extraction strategy to calculate the band reflectance and band index of each river section;Using machine learning algorithm to predict the suspended load sediment concentration of band reflectance, band index and environmental data.The present application carries out long-term monitoring of sediment concentration of different river section scales based on remote sensing data, and predicts by combining machine learning algorithm, which can accurately grasp the subtle dynamic changes of river sediment.

The present invention relates to the field of data management technology, and in particular to a method and system for analyzing the sediment deposition status of a river channel of a water conservancy project based on big data. The present invention performs sediment deposition difficulty analysis based on the bottom shape of the river and river flow data, performs sediment shedding anomaly analysis under the influence of river impact based on the river flow impact and the soil conditions around the river, performs sediment secondary deposition safety analysis based on the sediment shedding anomaly analysis results, predicts sediment deposition status based on the sediment deposition difficulty analysis results and the sediment secondary deposition safety analysis results, and issues sediment deposition status warning based on the predicted sediment deposition status, which helps to prevent and reduce the risks brought by sediment deposition, improves the scientific nature and effectiveness of river channel management, and promotes ecological environmental protection and sustainable development.

The application discloses the technical field of soil and water loss protection devices and relates to a soil and water conservation device for reducing river sediment accumulation, which comprises a mounting seat and symmetrically arranged sand taking pool groups, the sand taking pool groups comprise sand storage pools and sand setting pools arranged in sequence, and conveying belts are arranged between the sand storage pools and the sand setting pools; an upwardly protruding and downwardly inclined drainage table towards the two side sand setting pools is fixedly arranged at the top of the mounting seat, a drainage groove downwards inclined towards the two side sand setting pools is arranged in the middle of the drainage table, the drainage groove is communicated with the sand setting pools, and the drainage table and the drainage groove are arranged in sequence according to the flowing direction of the river.

The application relates to a plain river sediment concentration recovery method, a system and a storage medium, the method comprising the following steps: reading historical hydrological data of a hydrological station, including daily flow and daily sediment rate; defining a target period and a candidate period; obtaining a comprehensive similarity; selecting a candidate year or a candidate year set with the maximum comprehensive similarity as a reference hydrological year of the target period; respectively performing fitting on a correlation function curve; calculating and supplementing the sediment concentration of the target period; and performing pseudo-missing test. The application considers the water and sediment characteristics of dry and flood periods, can effectively control the reconstructed annual total sediment discharge, and has smaller daily process error and high efficiency in filling the missing historical sediment data.

The application provides a catchment sediment prediction method, which comprises the following steps: collecting various types of basic data of a target catchment, arranging the basic data into a grid form and performing unified spatial registration, and dividing the basic data based on small catchment boundaries as spatial units for sediment prediction; for each small catchment, gravity erosion, debris flow erosion, gully erosion and slope erosion are predicted respectively to obtain the future spatio-temporal distribution of various types of erosion and total erosion in the target catchment; the future sediment yield and deposition of each small catchment are calculated respectively for the four types of erosion; based on the future sediment yield, the upstream and downstream relationships of each small catchment in the target catchment are considered to calculate the suspended sediment transport capacity of the small catchment in the main river system in sections, and the distribution of the suspended sediment transport capacity along the flow direction of the main river system is predicted by combining the dredging, reservoir sedimentation and the input and output of the suspended sediment in the river section. The application can predict the spatio-temporal distribution of sediment in the multi-physical process of catchment erosion, catchment sediment yield and river sediment transport.

The invention discloses a traceability analysis system for a river sediment source in a cold highland area, and belongs to the technical field of sediment traceability. Comprising a data acquisition module, a sediment fingerprint database building module, a source region identification model building module, a sediment source inversion module, a space-time thermodynamic diagram generation module and a visual display module. And the sediment source inversion module is used for carrying out source contribution rate inversion on sediment samples collected by the target river section, the inversion method adopts a non-negative least square method, the feature vectors of the target samples are fitted on the feature vectors of all the source areas in the fingerprint database, and the contribution proportion of each source area to the samples is calculated. The method does not depend on initial artificial point distribution or physical marking of a field source area, a source area fingerprint database is constructed based on natural fingerprint characteristics of sediment, a passive, non-interference and traceable traceability identification mode is achieved, and the method is suitable for application requirements under extreme terrains and seasonal freeze-up restrictions in cold and cold mountainous areas.

The invention discloses an automatic drifting type river sediment cleaning and transporting integrated device which comprises a base, an extraction device, a treatment device and a transporting device. The treatment equipment comprises a shell, and a screening barrel, a screw rod and a water filter screen which are arranged in the shell, the extraction equipment comprises a suction pump, a first suction pipe and a second suction pipe, the second suction pipe is communicated with the screening barrel, a rotating motor is arranged on the side wall of the shell, and an output shaft of the rotating motor is fixedly connected with the screening barrel; the screw rod is slidably sleeved with a spiral piece and two extrusion plates. A control assembly is arranged in the shell; the transportation equipment comprises a spiral conveyor and a communicating pipe; according to the equipment, desilting and transportation are combined, sludge enters the transportation equipment after being subjected to dewatering treatment after being sucked, and the desilting and transportation efficiency is improved.

The invention discloses a method for determining an unsaturated parameter in a reservoir downstream river sediment recovery saturation coefficient, and belongs to the field of river sediment kinematics. The method comprises the following steps: acquiring measurement data of a vertical line average sediment content and a vertical line average sediment carrying capacity of a reservoir downstream river; obtaining the ratio of the average sand content of the vertical line to the average sand carrying capacity of the vertical line based on the measured data; obtaining test data, determining an initial power function relational expression of the unsaturated parameters and the ratio based on the test data, obtaining unknown parameters of the initial function relational expression by fitting the test data, and obtaining a final power function relational expression; and determining an unsaturated parameter in the reservoir downstream river sediment recovery saturation coefficient based on the final power function relational expression. The method can be directly applied to calculation of the sediment recovery saturation coefficient under the condition that the bed sand particle size is 0.18-0.28 mm, and key parameter support is provided for accurate prediction of erosion and deposition of the downstream river channel of the reservoir.

The invention relates to a stratified sampling pipe for sampling river sediment and a use method thereof. The device is suitable for the technical field of river sediment sampling. According to the technical scheme, the sampling device comprises a sampling barrel which is of a semi-cylindrical structure, a mud drilling base is arranged at any end of the sampling barrel, a mud drilling opening is formed in the mud drilling base, a plurality of sampling observation openings are formed in the inner side wall of the sampling barrel in a penetrating mode, and a protection part covering the sampling observation openings is detachably arranged on the outer side wall of the sampling barrel; the half pipe is of a semi-cylindrical structure and is detachably mounted on the mud drilling base, and the half pipe and the sampling barrel are matched to define a cylindrical barrel body; the adjusting assembly is arranged at the end, away from the mud drilling base, of the cylindrical barrel in a sleeving mode and used for locking the half pipe and the sampling barrel; the non-return assembly is arranged in the mud drilling opening of the mud drilling base, can open the mud drilling opening to enable the mud sample to enter the cylindrical barrel when the mud drilling opening is inserted downwards, and can close the mud drilling opening when the mud drilling opening is lifted upwards to prevent the mud sample in the pipe from flowing back; and the sampling assembly is matched with the sampling observation opening in an inserting manner.

The invention provides a method for treating sewage sludge and river sediment, and relates to water treatment engineering and hydraulic engineering for treating river channels. According to the scheme, in the first aspect, the sewage sludge and river sediment treatment method comprises the following steps that sludge and sediment flowing in sewage and a river are intercepted, and the intercepted sludge and sediment are precipitated to a sewage discharging and sediment discharging channel on the lower side of the sewage and the river; on the second aspect, the sewage sludge and river sediment treatment system is characterized in that a conveying device is mounted in a sewage discharging and sediment discharging channel; the conveying device conveys the sludge and the sediment to one side along the length direction of the pollution discharge and sediment discharge channel; the conveying device can gradually lift sludge and silt out of a sewage and river system. According to the device, silt in a river can be cleaned for a long time, secondary utilization of the silt in the river is achieved, cost is saved, and economic benefits are improved. The device can also be used in sewage treatment and feed water treatment, and the sewage treatment capacity can be improved.

The invention discloses a wandering section river sediment deposition treatment scheme optimization method. The method comprises the following steps: A, establishing a simulation model; b, establishing a treatment scheme database; and C, optimizing the treatment scheme by using a dynamic genetic algorithm, and performing simulation confirmation through the simulation model. The defects in the prior art can be overcome, and the efficiency and accuracy of governance scheme optimization are improved.

The invention belongs to the technical field of sludge remediation and treatment, and discloses an urban river sediment remediation and treatment device and method.The urban river sediment remediation and treatment device comprises a measuring ship, a towing bracket is installed at the bottom of the measuring ship, and a mounting plate is fixedly connected to the tail of the towing bracket; a plurality of slotting gears are mounted in the middle of the mounting plate, through cooperation of structures such as hook rakes, drum waist sleeves and shaft rods, the rotating hook rakes continuously fish out large stones in bottom mud to reach the surface of the drum waist sleeves with the high middle and the low two sides, meanwhile, the shaft rods generate extrusion force in reciprocating spiral grooves through round protruding blocks, and the large stones are driven by the shaft rods to rotate. The drum waist sleeve does axial reciprocating motion in the rotating process, stone is accelerated to be discharged to the two sides through slight axial vibration, and the raking depth is synchronously changed according to the adjusting depth of the towing bracket, so that the service life of the slotting gear is effectively prolonged, and the slotting gear is prevented from being abraded or deflected.

The utility model discloses a small-watershed river sediment monitoring device, belongs to the technical field of river sediment monitoring, and aims to solve the problems that an existing river sediment monitoring station is large in occupied area and inconvenient to arrange near a small-watershed river. The monitoring device comprises a sampling pipe fixing unit, a water inlet elbow pipe, a water inlet corrugated pipe, a pre-buried water passing pipe, a first water suction pump, a transition corrugated pipe, a river bank foundation pit, a monitoring box body, a weighing device, a mounting boss, a liquid pumping unit and a heating evaporation unit, after water and sediment in the collected water body sample are separated twice through the liquid pumping unit and the heating evaporation unit, the accurate sediment content is obtained to the maximum degree, the accuracy of sediment monitoring of the small-watershed river channel is improved, and the device is mainly used for monitoring the sediment of the small-watershed river channel.

The invention belongs to the technical field of river sediment interception, and particularly relates to a river sediment interception device for a riverway, which comprises a sinking frame, an interception net, a fishing mechanism and a driving mechanism, the interception net is arranged on the front side of the sinking frame, the sinking frame sinks into the riverway, and the interception net can intercept sediment in the riverway; a fishing mechanism used for fishing silt and a driving mechanism used for driving the fishing mechanism to operate are arranged in the sinking frame, the fishing mechanism comprises sliding guide rails, a sliding frame and a fishing frame, the sliding guide rails are connected to the two sides of the sinking frame in a sliding mode, and the sliding frame is connected between the two sliding guide rails in a sliding mode; the lower portion of the sliding frame is rotationally connected with a fishing frame, and the fishing frame can turn over to fish silt in a river. In the using process, if silt is accumulated in the sinking frame on the lower portion of the intercepting net, the accumulated silt can be fished up through the fishing frame, it is avoided that the silt continuously deposits on the lower portion of the intercepting net, and the effect of automatically cleaning the accumulated silt is achieved.

The present application relates to the technical field of pollution monitoring, and more particularly to a pollution monitoring method and system for river water and a storage medium, comprising: obtaining river sediment spectral data through multi-point synchronous acquisition technology, and extracting characteristic vectors using principal component analysis to determine the types of pollutants; combining hydrodynamic and molecular polarization effects, using back propagation neural networks to predict the diffusion direction of pollutants and the interface polarization intensity, and generating the distribution pattern of pollutants in sediments; obtaining the potential gradient and chemical bond amplitude characteristics of the spatial distribution of pollution sources; matching the signal attenuation rate of the spectral signal with the chemical bond strength model to determine the emission frequency of pollutants and the interface scattering effect; combining the persistence of pollution sources and the chemical bond amplitude to trace the spatial distribution, emission frequency and potential gradient of pollution sources. Through these steps, the present application realizes accurate tracing and dynamic monitoring of pollution sources, effectively improving the accuracy of pollutant detection and the scientificity of water quality management.

The application discloses a riverway sediment sampling device, relates to the technical field of riverway sediment sampling, and comprises a floating component, a collecting cylinder and a limiting component. The collecting cylinder is hingedly connected with cover plates at two ends. The cover plates are provided with lug plates. The limiting component is vertically connected to the outer wall surface of the collecting cylinder and is used for limiting the lug plates so that the cover plates are opened with the ports of the collecting cylinder. The floating component is matched with the limiting component. The buoyancy of water is used as the trigger power for closing the cover plates. The automation of the sampling process is realized. When the collecting cylinder is lowered to the predetermined water depth, the buoyancy of the floating ball is transmitted to the limiting component through the ropes. The clamping plate mechanism rotates oppositely and releases the lug plates. The cover plates are automatically closed under the action of the return springs. Manual remote triggering is not needed. The convenience and reliability of the sampling operation are remarkably improved.

The invention provides a portal crane-monitoring device platform-based online monitoring system and method for overflowing water quality and sediment characteristics of a water-turbine generator set, and the system comprises a portal crane-monitoring device platform, the portal crane-monitoring device platform is connected with a portal crane lifting device through a plug pin structure, and a monitoring device is installed at the bottom end of the portal crane lifting device. The monitoring device is internally provided with a sampling and collecting device for sampling and collecting a water body, and is also provided with an image and water sample detection device for water body detection and image detection; the portal crane-monitoring device platform is connected with a remote control terminal through an SCADA information transmission module, so that dynamic-normalized online monitoring of water quality and sediment characteristics in a drainage basin is realized, and meanwhile, monitored data is timely stored in a remote server for analysis and storage. Full-chain integration is realized from four links of a monitoring method, monitoring equipment, a monitoring position and a monitoring platform, the design of a monitoring system is completed, high-efficiency and high-precision monitoring is realized, the labor intensity is reduced, online analysis of river sediment characteristics is met, and a high intelligent level is realized.