33 results about "Sediment particle size" patented technology

The invention discloses a river suspended sediment particle size spectrum remote sensing method based on drainage basin and water environment characteristics. The method comprises the following steps: obtaining monthly mean value data of drainage basin characteristic factors and daily value and monthly mean value data of an actually measured suspended sediment particle size spectrum; screening drainage basin characteristic factors and water environment factors sensitive to the suspended sediment particle size spectrum; taking monthly mean value data of the screened drainage basin characteristic factors as input and monthly mean value data of the actually measured suspended sediment particle size spectrum as output to train a first random forest model, and obtaining a monthly mean value estimation model of the suspended sediment particle size spectrum; taking the screened water environment factor data as input and daily value data of the suspended sediment particle size spectrum as output to train a second random forest model, and obtaining a daily value estimation model of the suspended sediment particle size spectrum; and estimating the daily value of the suspended sediment particle size spectrum of the to-be-detected drainage basin by combining the monthly mean value and daily value estimation model of the suspended sediment particle size spectrum. According to the method, drainage basin characteristics and water environment condition factors sensitive to the river suspended sediment particle size spectrum are comprehensively utilized, and daily-scale high-precision remote sensing of the suspended sediment particle size spectrum is achieved.

The invention provides a suspended sediment concentration inversion method capable of resisting particle size interference, which comprises the following steps of: standardizing the original acoustic echo intensity of each observation grid to obtain the standardized volume back scattering intensity; establishing a sonar equation considering the sound wave attenuation of the sediment particles, and performing explicit processing on the sonar equation considering the sound wave attenuation of the sediment particles to obtain an explicit inversion model which resists particle size interference and considers the on-way change of the sediment particle size; and performing model parameter calibration on the explicit inversion model, and performing suspended sediment concentration inversion on the river observation section based on the suspended sediment concentration inversion value of each observation grid. According to the method, the dependence of ADCP inversion of the suspended sediment concentration on suspended sediment particle size distribution is effectively eliminated, and the stability and accuracy of suspended sediment concentration inversion are improved. The particle size interference resistant explicit method can realize continuous and real-time suspended sediment concentration monitoring, and is suitable for various water environments such as rivers, lakes, reservoirs and the like.

This utility model relates to the field of sediment separation technology and discloses a cyclone device for sediment separation, including a cyclone separator body and a switching disc. The switching disc has multiple discharge holes arranged in a circular array, each discharge hole containing a screen. The bottom end of each discharge hole is provided with a guide cylinder and an adjusting component, the guide cylinder changing direction via the adjusting component. A rotating component connects the switching disc and the cyclone separator body and is used to rotate the switching disc, switching different discharge holes to the discharge end of the cyclone separator body. This utility model allows for quick and convenient switching of screens with different apertures via the rotating component. Based on the required sediment particle size, the controller starts the motor, driving the switching disc to rotate, aligning the corresponding discharge hole with the discharge end of the cyclone separator body. The entire process is automated, reducing manual intervention and improving screening efficiency.

The invention relates to the technical field of riverbed sediment measurement, in particular to an image-based riverbed sediment measurement method, device and equipment and a computer storage medium. The method comprises the following steps: acquiring a first target riverbed sediment picture sampled by an unmanned aerial vehicle at a height lower than the highest flight height of a first unmanned aerial vehicle under the condition of low flight of the unmanned aerial vehicle for riverbed sediment particle size detection; and acquiring a second target riverbed sediment picture sampled by the unmanned aerial vehicle at a height lower than the highest flight height of the second unmanned aerial vehicle under the condition of no low flight of the unmanned aerial vehicle, inputting the target sediment image super-resolution model to obtain a target super-resolution riverbed sediment image, and carrying out riverbed sediment particle size detection. According to the invention, the accuracy of riverbed sediment measurement is effectively improved.

The invention discloses a method for calculating a vertical suspended sediment distribution rule by considering turbulence influence, which comprises the following steps: S1, considering the diffusivity of a water body to suspended sediment and the sedimentation effect of sediment, and carrying out discrete difference calculation on the vertical spatial and temporal distribution rule of suspended sediment concentration S by using the following differential equation; s2, calculating a turbulence diffusion coefficient in a seabed turbulence boundary layer by using a turbulence k-epsilon model; s3, the diffusion coefficient of the suspended sediment is equal to the diffusion coefficient of the turbulent flow, so that the diffusion coefficient of the suspended sediment is calculated by the following formula; and finally obtaining a time sequence result of the suspended sediment concentration vertical distribution characteristics considering parameters such as turbulence, suspended sediment concentration and sediment particle size by combining a seawater motion equation, the formula and the parameter result. By comprehensively considering the influence of parameters such as turbulence, suspended sediment concentration and sediment particle size, a more accurate result can be obtained.

The invention belongs to the technical field of sand content detection, and particularly relates to a self-adaptive suspension water flow sand content measuring device and method. A lifting buoy; an air bag is arranged at the upper part in the lifting buoy; the air bag is connected with the air supply unit, and the air supply unit performs inflation and deflation control so as to control the sinking and floating position of the lifting buoy on the water surface; a grating detector, a lens and a light source are arranged in the sand content measuring cylinder, and the light source irradiates the grating detector through the lens; a water pressure gauge is mounted on the sand content measuring cylinder; and a controller. According to the scheme, through inflation and deflation control of the air bag, stable suspension and self-adaptive positioning of the equipment at the specified depth in water flow are achieved; the problems of data distortion and high maintenance cost caused by the sensor are avoided; the grating sensor is used for directly obtaining the weight and the sand content of water flow and detailed sand grain grading distribution data in a long time and high precision mode, and the bottleneck that a traditional indirect measuring method is greatly interfered by sand characteristics is broken through.

The invention relates to a wet-type rotary precise sample separation device and method for marine sediment particle size analysis. The wet-type rotary precise sample separation device comprises an anti-sedimentation sample injection unit, a rotary sample separation unit and a driving unit, the anti-sedimentation sample introduction unit comprises a sample introduction funnel and a dynamic homogenizer arranged in the sample introduction funnel, and a liquid outlet is formed in the bottom of the sample introduction funnel; the rotary sample separation unit is positioned below a liquid outlet of the anti-sedimentation sample injection unit and comprises a distribution disc capable of rotating around a vertical axis, and at least two stations for accommodating receiving containers are arranged on the distribution disc along the circumferential direction; and the driving unit is in transmission connection with the distribution disc and is used for driving the distribution disc to rotate. The device is compact in structure, easy and convenient to operate and high in sample separation precision, the influence of gravity sedimentation on sampling uniformity can be overcome in a mechanical mode, and it is ensured that each trace sample separated from original suspension liquid is highly consistent with an original sample in particle size composition, so that the requirement for high-precision laser particle size analysis is met.

The present application relates to a kind of water body silt particle size distribution and sediment concentration online measuring device and method, ultrasonic sediment concentration sensing box is installed on the outside of online measuring transfer box in online measurement, single-chip microcomputer is installed in ultrasonic sediment concentration sensing box, the single-chip microcomputer is connected with the ultrasonic emission head and ultrasonic receiving head installed on the inner wall of online measuring transfer box by line, the bottom side of online measuring transfer box is provided with liquid outlet pipe, one-way liquid outlet electromagnetic valve and liquid pump are installed on liquid outlet pipe, the top of online measuring transfer box is communicated with comprehensive measuring cylinder, the top of comprehensive measuring cylinder is communicated with water source by inlet pipe, inlet pump, anti-backflow electromagnetic valve and liquid flowmeter are installed on inlet pipe;While guaranteeing the accuracy of measurement result, it does not affect the operation of single liquid discharge operation, when single measurement operation detection result reaches early warning value, stop bit user end provides water source, realizes the online detection operation of water end.

The present invention relates to a method, apparatus, device, and storage medium for extracting sediment particle size secondary distribution. The method comprises: establishing a sediment particle size distribution model that integrates two probability density functions based on frequency data of the sediment particle size distribution; obtaining sediment particle size distribution model parameters based on the sediment particle size distribution model that integrates the two probability density functions; and determining particle size secondary distribution statistical parameters based on the sediment particle size distribution model parameters. The present invention solves the existing problem of extracting detrital sediment particle size secondary distribution, improving the accuracy and effectiveness of particle size secondary distribution extraction.

The present invention discloses a method for measuring the turbulence intensity of sediment-laden water flow in a sediment environment and its model. The model includes a water flow control system and a measurement system. The method includes determining the model input conditions, including the range of values ​​of sediment content and median sediment particle size; debugging and running the model, regulating the water flow control system, and measuring the water depth and flow velocity data of the model section; determining the model experimental conditions based on the uniform flow-turbulent flow-slow flow mode; collecting test data, measuring the pulsating pressure of the water flow at each measuring point; processing the collected test data, and outputting a quantitative index of the turbulence intensity of the sediment-laden water flow. The present invention replaces the pulsating flow velocity with the pulsating pressure as a quantitative index of the turbulence intensity of the sediment-laden water flow, while ensuring the measurement accuracy, not only improving the calculation efficiency, but also breaking through the technical bottleneck of high sediment content and extremely fine sediment particles, and providing certain technical support for conducting physical model test research on the turbulence characteristics of sediment-laden water flow, especially high sediment content water flow.

The present application provides a kind of phosphorus transport and distribution calculation method based on suspended sediment settling probability, comprising the following steps: selecting a typical section, field determination section sediment particle size distribution, sediment concentration and water velocity;According to the sediment concentration, etc., the settling velocity of single-component sediment is calculated and checked, and the settling velocity of full particle size suspended sediment is obtained by particle size distribution composition;According to the settling velocity of sediment and the sediment settling probability function, the particle state phosphorus transport trajectory is analyzed;Based on the phase separation model, the functional relationship between different particle size groups of sediment, i.e. different sediment concentrations and adsorption phase phosphorus is determined through laboratory experiment;The sediment particle size distribution grouping information and the settling velocity of full particle size suspended sediment are introduced into the hydrodynamic water quality model to analyze the transport process and distribution characteristics of particle phosphorus and dissolved phase phosphorus. This method realizes the numerical analysis of the particle phosphorus transport trajectory, settling velocity and solid-liquid two-phase distribution of full particle size sediment.

The present invention provides a method and device for predicting the propagation time of sediment peaks in a reservoir area based on different types of floods, which can quickly and accurately determine the propagation time of sediment peaks in the reservoir area for different flood types. The method for predicting the propagation of sediment peaks in the reservoir area includes: Step 1, select the hydrological station at the end of the reservoir backwater as the incoming flow inlet hydrological station, obtain the daily data of the flow rate and sediment concentration, the relevant data of sediment particle size, and the relevant data of the water depth in front of the reservoir dam at this station, and statistically analyze the relevant characteristic quantities when floods occur at the incoming flow hydrological station; Step 2, determine the specific flood type based on the fisher time and the peak shape of the flood itself; Step 3, deduce the movement speed of the water body propagating to the hydrological station in the reservoir area according to the characteristics of the incoming flood events and the position relationship of the hydrological stations in the reservoir area, and calculate the movement time of the water flow in the reservoir area; Step 4, calculate the influence of the asynchronous sediment peak of the initial flood peak and the flood duration; Step 5, calculate the propagation time of the sediment peak of this flood event according to the type of the flood event.

The system comprises a water storage tank, a water pump and an incubator, the incubator comprises an incubator body, the interior of the incubator body is divided into at least one water flow channel serving as a working condition area through a waterproof partition plate, the other end of each flow channel is provided with a water outlet, and the other end of each water flow channel is provided with a water inlet. At least one hatching box is arranged above the gravel-cobble in the flow channel in the water flow direction, the gravel-cobble is laid at the bottom, sediment is laid on the gravel-cobble, and the gravel-cobble and the sediment are immersed in water with a certain flow speed. The oxygen enrichment process of a natural river channel is simulated through the water flow channel, gravel-cobble is laid at the bottom of the hatching box, a substrate of the natural environment is simulated, then roes and silt are arranged on the gravel-cobble, the silt and the roes are naturally deposited in the gravel-cobble, the influence on roe hatching under the real silt deposition condition can be simulated, and the hatching efficiency is improved. The influence of sediment deposition on roe incubation can be qualitatively observed, and the influence of sediment particle size deposition on a roe incubation mechanism can be observed.

The invention discloses a lake basin deepwater fine-grained sediment source analysis method and device, and the method comprises the steps: obtaining sedimentary microfacies recognition result data of a rock core sample of a to-be-detected lake basin region, and generating a sedimentary microfacies profile map of a single well high-frequency sequence; obtaining the fragment zircon age distribution in the fine grain sediment; utilizing the sedimentary microfacies profile map and the detrital zircon age distribution to determine the source associated information of the fine-grained sediment in the same deposition time period; the source associated information comprises fine-grained sediments from the same source; carrying out paleo-landform reduction analysis, paleo-water depth reduction analysis and sediment particle size distribution analysis on the lake basin area to be detected, and outputting sediment carrying characteristic data and sediment distribution characteristic data; based on the object source correlation information, the sediment carrying characteristic data and the deposition distribution characteristic data, density flow deposition body distribution characteristics are analyzed through a well seismic isochronous profile, and a deposition microfacies distribution diagram is output. According to the method, lake basin deepwater fine particle mixed deposition superposed material sources can be distinguished.

The method for tracing a sediment source, including: sampling at sampling points and multiple additional testing points around each sampling point; measuring sediment grain size distribution and corresponding mass percentages to plot sediment grain size distribution curves of each sampling point and its additional testing points; plotting a sediment fingerprint matrix of each sampling point; comparing patterns of the sediment fingerprint matrix of the first sampling point with patterns of the sediment fingerprint matrix of the second sampling point, and determining whether sediment at the first sampling point and that at the second sampling point have the same source. The sediment fingerprint matrix that illustrates the variation of sediment characteristics in different grain size intervals. In addition, by comparing the sediment characteristics in the corresponding grain size intervals, the tracing and classification of sediment from different locations can be achieved.

The method for tracing a sediment source, including: sampling at sampling points and multiple additional testing points around each sampling point; measuring sediment grain size distribution and corresponding mass percentages to plot sediment grain size distribution curves of each sampling point and its additional testing points; plotting a sediment fingerprint matrix of each sampling point; comparing patterns of the sediment fingerprint matrix of the first sampling point with patterns of the sediment fingerprint matrix of the second sampling point, and determining whether sediment at the first sampling point and that at the second sampling point have the same source. The present disclosure provides the sediment fingerprint matrix that illustrates the variation of sediment characteristics in different grain size intervals. In addition, by comparing the sediment characteristics in the corresponding grain size intervals, the precise tracing and classification of sediment from different locations can be achieved.

The application discloses a kind of based on Doppler flow velocity profiler multilayer sediment sound signal attenuation correction's bed load sediment transport rate measurement method, comprising: in the floodplain area of the river reach to be measured, the bed surface of sediment is sampled, and the bed material gradation is measured, and the median size of bed sand is obtained;Obtain flow data, and extract ship speed data from flow data;According to ship speed data, calculate riverbed movement speed;Filter riverbed movement speed data, and calculate the eigenvalue of filtered riverbed movement speed data;According to the eigenvalue of filtered riverbed movement speed data, respectively calculate bed load vertical projection area ratio;According to bed sand median size, calculate dimensionless sediment particle size;According to dimensionless sediment particle size, calculate bed load layer thickness;According to bed load vertical projection area ratio and bed load layer thickness, calculate bed load volume concentration;According to bed load volume concentration, calculate multilayer sediment sound signal attenuation correction coefficient;According to multilayer sediment sound signal attenuation correction coefficient, calculate bed load sediment transport rate.The application accurately and effectively measures bed load sediment transport rate.

The utility model discloses a water-turbine generator set sediment characteristic on-line detection and fault prediction system, which structurally comprises a vibration sensor, a flow velocity sensor, an integrated throw-in type liquid level meter sensor, a turbidity sensor, a laser particle size analyzer data acquisition module, a Raspberry Pi, a network database data processing module and a transmission storage module, and an online platform data display module. According to the utility model, by collecting and analyzing data of various sensors, reservoir basic information, reservoir sediment characteristics and specific information of the proportion of clay mineral components can be displayed to a user in the forms of a textbox, a data pie chart and the like, data uploaded to a MySQL database by a monitoring platform can be read in real time, and data visualization is realized in the forms of a broken line chart and the like; and displaying various data obtained by each sensor, including depth, pressure, surface velocity, sediment content and sediment particle size, and fusing a neural network model obtained by Keras deep learning framework training into a page system to predict the sediment content.

The invention provides a seabed stability evaluation method and device in an offshore photovoltaic scene, a medium and equipment, and relates to the technical field of computers. The method comprises the following steps: collecting seabed surface sediments in an offshore area, determining sediment particle size characteristics and sediment type characteristics according to the collected seabed surface sediments, and evaluating the sediment stability according to the sediment particle size characteristics and the sediment type characteristics; the method comprises the steps of determining historical shoreline data and historical isobath data corresponding to an offshore area in an offshore photovoltaic scene, determining a shoreline advance and retreat rate according to the historical shoreline data, determining an isobath displacement rate according to the historical isobath data, and determining a seabed erosion and deposition rate by combining the shoreline advance and retreat rate and the isobath displacement rate. Evaluating the scouring and silting stability according to the seabed scouring and silting rate; and evaluating the seabed stability by using the evaluation result of the sediment stability and the evaluation result of the erosion and deposition stability. According to the invention, the accuracy of seabed stability evaluation in the offshore photovoltaic scene can be improved.

This invention relates to the field of riverbed sediment measurement technology, and in particular to an image-based method, apparatus, equipment, and computer storage medium for riverbed sediment measurement. Under conditions where low-altitude drone flight is possible, this invention acquires images of the target riverbed sediment sampled by the drone at an altitude below the maximum flight altitude of a first drone, and then performs sediment particle size detection. Under conditions where low-altitude drone flight is not possible, it acquires images of the target riverbed sediment sampled by the drone at an altitude below the maximum flight altitude of a second drone, and inputs these images into a target sediment image super-resolution model to obtain a target super-resolution riverbed sediment image, which is then used for sediment particle size detection. This invention effectively improves the accuracy of riverbed sediment measurement.

The invention discloses an underwater sediment particle size measurement system based on laser light curtain imaging. The underwater sediment particle size measurement system comprises an upper computer, a waterproof metal isolation bin, and a laser light curtain irradiation module, a microscopic optical imaging module and an image sensing module which are mounted in the waterproof metal isolation bin, an optical window is arranged on the waterproof metal isolation bin; the laser light curtain irradiation module is used for generating a stable and uniform laser light curtain, outputting the laser light curtain from an optical window, and exposing and displaying to-be-detected sediment particles; the microscopic optical imaging module is used for realizing high-definition dark field imaging of sediment particles in a laser light curtain plane; the image sensing module is used for acquiring an image of the sediment particles to be detected in real time and uploading the image to the upper computer; and the upper computer is used for processing the to-be-measured sediment particle image so as to measure the sediment particle size. The invention provides a new solution for real-time measurement of the particle size of underwater sediment particles, and has a great application prospect.

The application discloses a kind of asphaltene agglomerated deposition particles and deposition thickness test method and equipment, under the condition of setting temperature, crude oil and settling agent are mixed, the mixture after mixing gradually enters sample tube, when mixture fills test tube, crude oil is injected into sample tube at different flow rates respectively, the inlet pressure and outlet pressure of sample tube are recorded in real time;The pressure difference of sample tube is calculated, and the deposition thickness of asphaltene in crude oil under different flow rates is calculated in real time based on the pressure difference of sample tube;When experiment ends, the deposit in mixed liquid is collected, the initial particle size of deposit in mixed liquid is obtained, the residual liquid in sample tube is replaced, the deposit precipitated in sample tube is dried and collected, and the particle size of the deposit collected at this time is obtained, the method can obtain the deposition thickness and the particle size of deposition particles of asphaltene in deposited crude oil under different flow rates, which is convenient for predicting the size of asphaltene agglomerated deposition particles and deposition thickness in application.

The application discloses a reservoir sedimentation risk two-dimensional evaluation method, comprising the following steps: determining reservoir sedimentation risk evaluation indexes; evaluating reservoir sedimentation present situation; evaluating reservoir sedimentation future development trend; constructing a reservoir sedimentation risk two-dimensional evaluation graph, evaluating reservoir sedimentation risk zoning; analyzing reservoir sedimentation risk regional characteristics; determining reservoir sedimentation risk control measures and engineering quantity schemes. The application comprehensively considers factors such as reservoir sedimentation amount, incoming water and sediment conditions, sediment particle size distribution and slope, quantitatively evaluates reservoir sedimentation risk from two aspects of reservoir sedimentation present situation and future development trend, accurately identifies reservoir groups with the most urgent needs of sedimentation control and reservoir capacity recovery, and gives reservoir sedimentation risk control schemes, which are important bases for reservoir sedimentation control and function recovery.

The application provides a deep-sea sediment washing and screening device capable of monitoring concentration changes and a working method thereof, which comprises, from top to bottom, a mud pretreatment system, a washing and screening system, a vibrating base and a PLC controller. The washing and screening system has a four-layer structure, from top to bottom, three-layer screening cages and a discharging layer, which are connected through flanges. The screening cage comprises, from top to bottom, a screening cage top cover, a sample treatment layer, a sample collection layer and a sample recycling device. Through the technical scheme, the time required for the experiment is greatly reduced through the highly automated vibrating screening system. The deep-sea sediment washing and screening device capable of monitoring concentration changes is provided, and efficient and standardized sediment treatment can be achieved. The improvement of the washing and screening technology of deep-sea sediments improves the working efficiency and accuracy of sediment particle size analysis, which has a positive significance for clarifying the source of seabed sediments, explaining sediment differentiation and determining the sediment environment.

The present invention discloses a sediment concentration monitoring device and method for acoustic-optic signal data fusion, which relates to the technical field of hydrological monitoring. The device includes a frame and an integrated device of a turbidimeter and a hydrophone. The integrated device of the turbidimeter and the hydrophone is installed in the center of the frame, and its signal is emitted upward and perpendicular to the water surface. The frame is used to adjust the water entry depth of the integrated device of the turbidimeter and the hydrophone. In the present invention, the turbidimeter and the hydrophone are integrated with a cable through a fixed bracket structure and installed at the bottom of the water body. According to the principle of acoustic backscattering, the sediment concentration value is inversely calculated by using the echo signal of the hydrophone. At the same time, the turbidimeter data and the hydrophone data are fused to obtain the fused sediment concentration value. By fusing the signal data of the turbidimeter and the hydrophone, the present invention overcomes the deficiencies of a single sediment concentration measurement principle and method, meets the requirements of high-precision measurement of sediment concentration under different sediment particle size conditions, and realizes high-precision sediment concentration monitoring.

The invention belongs to the technical field of sediment monitoring, and particularly relates to a sediment particle size monitoring device and method under the ice cover flow condition, the sediment particle size monitoring device comprises a mounting frame, positioning plates are symmetrically and fixedly mounted at the bottom of the mounting frame, guide rails are symmetrically and fixedly mounted on the vertical section of the mounting frame, and translation blocks are symmetrically and slidably mounted on the inner walls of the guide rails; the translation blocks on the same side form a group, a sliding column is fixedly mounted between the translation blocks in each group, a monitoring assembly is arranged on one side of one translation block in each group, and an adjusting assembly is arranged on the inner side of the mounting frame. By adjusting the position of the monitoring assembly, the monitoring area can be flexibly adjusted according to different monitoring requirements, so that the monitoring assembly can be used for monitoring a water area with more representative sediment particle distribution, and more representative monitoring data can be obtained, so that the sediment particle size data can be more accurately and comprehensively obtained; the monitoring result deviation caused by the fixed monitoring position is avoided, and the scientificity and the reliability of the monitoring data are improved.

The invention provides a reservoir siltation sediment particle size and sound wave penetrability inversion model determination method, which comprises the following steps of: determining a reservoir siltation section through river sections in different periods; through the sediment sediment particle size data set, sediment particle size data of a reservoir sediment section and a cleaning non-sediment section are combined; determining the sound wave penetration thickness according to the sound wave upper edge and lower edge data in the sound wave data set; therefore, a data set of the sound wave penetration thickness and the average particle size of the corresponding deposited sediment is formed, models of the sound wave penetration thickness and the corresponding deposited sediment are established, and model evaluation is performed by using decision coefficients.

The invention provides a deep-sea sediment washing and screening device capable of monitoring concentration changes and a working method of the deep-sea sediment washing and screening device. The deep-sea sediment washing and screening device comprises a slurry pretreatment system, a washing and screening system, a vibration base and a PLC which are sequentially installed from top to bottom. The washing and screening system is of a four-layer structure and comprises three layers of screening cages and a discharging layer from top to bottom, the three layers of screening cages and the discharging layer are communicated through flanges, and each screening cage comprises a screening cage top cover, a sample processing layer, a sample collecting layer and a sample recycling device which are arranged from top to bottom. According to the technical scheme, the time required by an experiment is greatly shortened through the vibrating screen system with the high automation degree. And the deep-sea sediment washing and screening device capable of monitoring the concentration change is arranged, so that efficient and standardized sediment treatment can be realized. The washing and screening technology of the deep-sea sediments is improved, the working efficiency and accuracy of sediment particle size analysis are improved, and the method has positive significance in clarifying the source of the seabed sediments, explaining the sedimentary differentiation effect, determining the sedimentary environment and the like.

The invention discloses a sediment particle size analysis screen analysis method and device, electronic equipment and a storage medium. The method comprises the following steps: determining a first particle size of first sieved powder; determining at least one screen size according to the first particle size, and determining at least one first mass; performing vibration screening on the first screened powder according to a screen mesh, and weighing to obtain second mass; a first mass fraction is determined from the at least one first mass and the second mass. According to the method, the screen is selected according to the first particle size, the first screened powder is weighed according to the selected screen, and the mass fractions of the particles with different particle sizes in the sediment are determined according to the obtained mass, so that automatic weighing can be realized, and meanwhile, due to direct weighing, the particles do not need to be replaced by a weighing tray, and the weighing efficiency is improved. The problem of particle loss generated in the weighing process is avoided, and accurate data basis and higher test efficiency are provided for content analysis of sediments while the accuracy of quality acquisition is improved.

The present disclosure provides a method and device for measuring the sediment particle size of the riverbed in mountainous areas, which relates to the technical field of water conservancy project measurement. The specific implementation scheme is as follows: intercept the first riverbed sediment photo to obtain the first left-bank riverbed sediment photo and the first right-bank riverbed sediment photo; determine a plurality of first sampling points and their sediment type information according to the first left-bank riverbed sediment photo and the first right-bank riverbed sediment photo; determine the first sediment type proportion information according to the sediment type information of each first sampling point among the plurality of first sampling points; determine a plurality of second sampling points from the plurality of first sampling points, and determine the first sediment grading information according to the plurality of second sampling points; determine the average sediment full particle size grading information of the first mountainous river section according to the first sediment type proportion information and the first sediment grading information, so as to improve the measurement accuracy, data representativeness and reliability of the average sediment full particle size grading information of the riverbed in mountainous areas.