179 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 relates to the technical field of sediment particle size detection, in particular to a river sediment particle size detection device which comprises a main body plate, a centrifugal partition mechanism enabling particles in a solution to be classified according to the size of the particle size is arranged in the main body plate, and the centrifugal partition mechanism comprises a first empty groove formed in the upper end of the main body plate; a supporting plate is rotationally matched in the first empty groove, a rotating body is arranged at the upper end of the supporting plate, the upper end of the rotating body is of an opening structure, a containing shell is arranged in the rotating body in a matched mode, the containing shell is of a transparent structure, and a bubble removing mechanism for removing bubbles through pressure reduction and ultrasonic waves is arranged at the lower end of the main body plate. A detection mechanism for detecting various particle sizes in a solution is arranged at the upper end of the main body plate; under the action of centrifugal force, particles with different particle sizes enter different adjacent baffle rings, meanwhile, under the shaking of the bubble removing mechanism, it can be guaranteed that particles with small particle size differences are evenly laid in the baffle rings, and the situation that small particles are blocked by large particles is prevented.

The invention provides a river sediment depth measuring device for hydrological survey, and relates to the technical field of hydrological survey. The river sediment depth measuring device for hydrological survey comprises a mounting base, a mounting cylinder with a downward opening is mounted on the lower surface of the mounting base, an electromagnet is mounted on the inner wall of the upper end of the mounting cylinder, a magnetic plate is arranged under the electromagnet, the magnetic plate is connected with a detection mechanism, and the detection mechanism is further connected with the inner wall of the mounting cylinder; the detection mechanism comprises a toothed plate, the top of the toothed plate is fixedly connected with the lower surface of the magnetic plate, and the bottom of the toothed plate is fixedly connected with a fixed block; the toothed plate is slidably connected with the inner wall of the mounting cylinder through a connecting block, and the connecting block is arranged close to the top of the toothed plate. And a rotating shaft is rotationally connected into the mounting cylinder, the rotating shaft is fixedly connected with a gear rotating coaxially, the gear is close to the bottom opening of the mounting cylinder, and the gear is meshed with the toothed plate. The river sediment depth measuring device for hydrological survey provided by the invention has the advantage of high detection accuracy.

The invention relates to the technical field of scheme decision, and discloses a river channel clearing scheme decision method, device and equipment based on bottom mud elution, and the method comprises the steps: carrying out the data collection and standardization preprocessing of the river channel space distribution, section morphology, hydrological parameters and bottom mud pollution characteristics of a river network system, and obtaining a river channel network characteristic data set; carrying out sediment pollutant migration and diffusion analysis, and calculating a pollution propagation relationship between nodes to obtain a river sediment pollution propagation network model; carrying out river sediment pollution coupling degree calculation to obtain river sediment elution risk distribution data; and inputting the river sediment elution risk distribution data into the P center problem network optimization model, and generating a river network dredging scheme through pollution diffusion risk minimization and dredging resource utilization efficiency maximization analysis. According to the invention, a plurality of factors of the river network system are incorporated into the decision-making process, a systematized and normalized clearing scheme decision-making method is formed, and the scientificity and efficiency of river regulation are improved.

The invention belongs to the technical field of biological environment monitoring, and particularly relates to a resource investigation monitoring device for aquatic organism environment DNA passive collection, the resource investigation monitoring device comprises a telescopic rod piece and a collection frame, the handheld end of the telescopic rod piece is provided with a timer body, and the collection frame is an independent split module. The resource investigation monitoring device for passively collecting the aquatic organism environment DNA has the effects of improving the biological environment DNA collecting efficiency and being suitable for more environments, in the using process, an operator does not need to make contact with the water environment in most cases, it is avoided that DNA on the operator is mistakenly collected, the device fixing point is located on the shore land, and the device fixing point is not prone to damage. Therefore, the river sediment environment does not need to be selected, and the device is suitable for various stable or unstable water sediment environments such as mud, gravel blocks and fine sand and can be placed in both gentle water areas and torrent water areas.

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 discloses a numerical simulation method for a river water and sediment transportation process based on a multi-GPU parallel framework. The method specifically comprises the following steps: dividing a calculation region into triangular grid calculation regions with the same number as GPUs; the variables are initialized; creating two CUDA flows to control parallel calculation of the two GPUs, and storing data of each river channel into the corresponding GPU; directly carrying out data communication between the GPUs; in each GPU, calculating a source item and flux of each triangular grid to obtain a water depth value, and calculating a water level value of each grid according to the water depth; according to the obtained water level value, water level result data calculated in each GPU are stored in a CPU to complete water level data merging; and calculating to obtain the water level values of each river reach and the outlet section of the river at each moment. According to the river sediment transportation process simulation method based on triangular grid multi-GPU parallel computing, the water and sediment transportation process of the river area can be efficiently simulated, and the water level value of the section can be rapidly predicted.

The utility model provides a riverway sediment sampling device, relates to the technical field of riverway sediment sampling, and solves the problems that when low riverway sediment is sampled, the sediment is easily washed away by water flow and is difficult to take out due to an opening of a container, and the sampling of deep sediment needs to be shoveled obliquely, so that the sampling time is shortened. Therefore, the requirements on the length and the control of the sampling device are higher. A connecting rod is arranged in the middle of the body, a lifting rod is rotationally connected to the bottom of the connecting rod, a threaded groove is formed in the side wall of the connecting rod, and sampling assemblies are connected to the bottom of the lifting rod in a crossed mode and swing along a crossed point to be closed and separated. The sediment at the bottom of the river channel can be conveniently sampled through the sampling assembly arranged in the device, the sediment can be shoveled under vertical control, and deeper sediment can be conveniently taken out.

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 comprehensive treatment and remediation equipment for heavy metal polluted river sediment, and belongs to the technical field of sludge treatment, the comprehensive treatment and remediation equipment comprises a support frame, a treatment cylinder is arranged on the support frame, a treatment filter assembly is arranged at the upper part of the treatment cylinder, and the treatment filter assembly is rotatably connected with the treatment cylinder; the lower part of the treatment cylinder is provided with a treatment mixing assembly, the treatment mixing assembly is rotatably connected with the treatment cylinder, and the top of the treatment cylinder is provided with a feeding funnel which is communicated with the treatment cylinder; a sludge drying assembly is arranged beside the supporting frame and communicates with the treatment barrel. According to the method, the sludge in the bottom of the heavy metal polluted river channel can be repaired and treated.

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 discloses a river sediment content measuring device and method based on ultrasonic attenuation, and relates to the field of river sediment concentration monitoring. A digital-to-analog conversion module in the device is arranged on an FPGA development board; the digital-to-analog conversion module is connected with the ultrasonic transmitting probe; the ultrasonic receiving probe is connected with the analog-to-digital conversion module; the analog-to-digital conversion module is connected with the FPGA development board; the ultrasonic transmitting probe is used for transmitting ultrasonic waves under the driving of the excitation signal transmitted by the digital-to-analog conversion module; the ultrasonic waves are used for spreading in a to-be-detected river in a gradual attenuation mode; the ultrasonic receiving probe is used for receiving ultrasonic waves propagating in a river to be detected, generating voltage signals according to the received ultrasonic waves and sending the voltage signals to the FPGA development board; and the FPGA development board is used for determining the sediment concentration of the river to be measured according to the voltage signal and the calibration curve. According to the invention, high-precision and wide-dynamic-range real-time measurement of the sediment content of the river can be realized.

According to the embodiment of the utility model, the utility model provides a water purifying device which comprises a coagulant adding unit, a flocculation mixing reaction unit, a separation and precipitation unit and a sludge discharge unit, and the coagulant adding unit is used for storing medicaments; the flocculation mixing reaction unit is communicated with the coagulant adding unit and a pipeline for conveying a mud-water mixture, and comprises a mixer and a reaction pipeline connected with the mixer; the separation and precipitation unit comprises a coarse precipitation area and a fine precipitation area, and the coarse precipitation area comprises a flow guide unit and a discharge pipe arranged below the flow guide unit; the fine settling zone comprises a water inlet channel, a separating and settling zone comprising a plurality of separating pipes, a drainage zone and a collecting zone which is arranged below the separating and settling zone and is used for collecting sludge; the sludge discharging unit is communicated with the collecting area and is used for discharging sludge out of the water purifying device. The water purifying device can separate gravel, sludge and water in the river sediment, so that the ecological environment of a riverbed can be reserved, and meanwhile, the muddy water can be subjected to certain dehydration treatment.

Disclosed are a method for preparing a non-sintered shell-wrapped ceramsite using solid waste meanwhile immobilizing a heavy metal in river sediment, and a non-sintered river-sediment-based shell-wrapped ceramsite, which relate to the technical field of building materials. The disclosure combines river sediment with a solid waste powder and an alkali activating powder material, and adopts multiple-step granulations to realize particle size control and physical pore formation, thereby obtaining a non-sintered ceramsite. A sulfoaluminate cement and a Portland cement are used to encapsulate the non-sintered ceramsite and form a shell by wrapping, thereby preparing a non-sintered river-sediment-based shell-wrapped ceramsite with internal porosity and dense shell.

The invention discloses soil leaching equipment suitable for treatment and remediation of heavy metal polluted river sediment in a mining area, and belongs to the technical field of soil remediation. The soil leaching equipment comprises a horizontally-arranged filter box, and a feeding hopper is arranged at the top of the filter box; a soil filtering assembly is arranged in the filtering box, and the soil filtering assembly is rotationally connected with the filtering box; a leaching box in sliding fit is arranged at the bottom of the filtering box, and a filtering moving assembly for driving the filtering box to move left and right is arranged at the top of the leaching box; a soil spraying assembly is arranged in the leaching box, the soil spraying assembly is rotationally connected with the leaching box, and a first mixing assembly and a second mixing assembly which are used for turning over soil are further arranged in the leaching box; and a separation box is arranged at the bottom of the leaching box. In the process of repairing the soil in the river sediment, the soil can be better mixed and stirred with the leacheate, so that the soil treatment and repairing effect is better.

The invention relates to the technical field of building materials, in particular to a solid-waste-based Yellow River sediment cementing material and a preparation method of an artificial flood prevention preparation stone. The solid waste-based Yellow River sediment cementing material is prepared from the following raw materials in parts by weight: 300 to 500 parts of Yellow River sediment, 80 to 130 parts of furnace slag ash, 40 to 80 parts of steel slag, 20 to 50 parts of alunite tailings, 25 to 55 parts of mirabilite gypsum, 0.5 to 1.5 parts of crack self-repairing material and 1 to 3 parts of workability regulator. The artificial flood prevention prepared stone prepared by the method has excellent mechanical properties and erosion resistance, can reduce carbon emission and improve the ecological property, and realizes resource utilization of the Yellow River silt.

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 a river sediment content monitoring device, and relates to the technical field of hydrological monitoring, the river sediment content monitoring device comprises a detection box, a hook is fixedly connected to the side wall of the top end of the detection box, a through hole is formed in the side wall of one end of the detection box, and a water inlet pipe is fixedly connected to the interior of the corresponding through hole; a first water pump is fixedly connected to the inner wall of the detection box, the water inlet end of the first water pump is fixedly communicated with one end of a water inlet pipe, and a first electromagnetic valve is arranged at one end of the water inlet pipe. According to the device, after silt filtering is completed, silt and metal particles mixed in the silt are screened in the detection box, the situation that the metal particles in the silt are mixed in the silt, consequently, the mass of the silt is increased, and detection of the silt content of river silt is affected is prevented, the silt and the metal particles can be independently collected, and the detection efficiency is improved. Subsequent treatment is facilitated, and the accuracy and reliability of the device during monitoring of the sediment content of the river sediment are improved to a great extent.

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 application provides a medium-to-large-sized river channel sediment zero-carbon self-repairing system and topological structure, the medium-to-large-sized river channel sediment zero-carbon self-repairing system comprises: a mud brick integrated machine is provided beside the river channel, a photovoltaic array is installed on at least one side of the river channel bridge, the photovoltaic array converts direct current into alternating current through an inverter to power the mud brick integrated machine; wherein, the number of photovoltaic panels in the photovoltaic array is determined according to the length of the bridge, the maximum photovoltaic output power generated by the photovoltaic array is calculated according to the length of the bridge, the total amount of sediment that the mud brick integrated machine needs to process is calculated, and the model of the mud brick integrated machine is selected based on the maximum photovoltaic output power and the total amount of sediment, so that the amount of photovoltaic energy generated by the photovoltaic array matches the energy consumption of the mud brick integrated machine, forming a medium-to-large-sized river channel sediment zero-carbon self-repairing system. The present application also arranges all river channel data through logical operations by setting a topological structure between the power supply side and the load side of the river channel, thereby realizing sediment zero-carbon self-repairing.

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 present invention belongs to the technical field of hydrological data processing, and relates to a method for estimating the sediment content of rivers in areas with insufficient data. First, according to the dynamic conditions and material source conditions of the study area, the estimation index is screened from the factors affecting the sediment content; secondly, the quantitative value method of each index is given; finally, a sediment content estimation formula is established based on the collected river data, so as to obtain the sediment content change process. The method described in the present invention comprehensively considers the precipitation intensity, terrain conditions, rock and soil anti-scourability and vegetation coverage in the study area, estimates the impact of river sediment content, and considers all factors. Traditional sediment content calculation methods can often only estimate the average sediment content of the river, but cannot give the change process of the sediment content. The method described in this application can be used to estimate the change process of the sediment content of the water flow in the study section over time.

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.