56 results about "Suspended load" patented technology

A suspended load sediment sampling device comprises a remote control boat, a vertical rotating shaft is rotatably arranged at the tail of the remote control boat, a flow guide plate is fixedly connected through the rotating shaft, a sampling barrel is slidably arranged on the flow guide plate in the length direction, an opening is formed in the side, close to the flow guide plate, of the sampling barrel, and a steel wire filter screen is fixedly arranged on the side, close to the flow guide plate, of the sampling barrel. According to the suspended sediment sampling device disclosed by the utility model, the position is changed through the movement of the remote control boat, and the automatic angle adjustment of the flow guide plate is matched, so that the plurality of sampling barrels on the flow guide plate obtain representative suspended sediment samples at different depth positions; and the accuracy and the efficiency of the sampling process are improved.

The invention provides a basin sediment budget calculation method, which comprises the following steps of: arranging various types of collected basic data of a target basin into a grid form, carrying out uniform space registration, and dividing the various types of basic data based on a small basin boundary serving as a space unit of sediment budget calculation; for each small watershed, respectively calculating gravitational erosion, debris flow erosion, channel erosion and slope erosion to obtain spatial and temporal distribution of various erosion amounts and the total erosion amount in the target watershed; respectively calculating the sediment yield and the deposition rate of the small watershed scale aiming at the four types of erosion; on the basis of the calculated sediment production, the sediment transport amount of the small watershed suspended load 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 sediment transport amount of the suspended load in the flowing direction of the main river water system is obtained in combination with sand digging, reservoir sedimentation and the input amount and the output amount of the suspended load in the river reach. According to the method, the sediment space-time distribution in the basin erosion and basin sand-producing river sediment transportation multi-physical process can be comprehensively quantified.

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 an anti-bed load impact wear concrete bottom plate rigidity gradient structure and a construction method thereof, which are used for protecting a hydraulic structure bottom plate from impact wear damage and improving the ability of concrete to resist bed load impact wear damage. Aiming at the acting force characteristics of suspended load and bed load at the bottom plate part, a three-layer composite design (a surface layer, a middle layer and a bottom layer) is adopted to form an integral rigidity gradient structure of the anti-bed load impact wear concrete bottom plate. The structure can effectively improve the bed load abrasion resistance of the bottom plate of the hydraulic structure. According to the rigidity gradient structure of the anti-bed load abrasion concrete bottom plate and the construction method of the rigidity gradient structure, the impact energy of rolling block stones can be effectively absorbed, the surface hardness of the concrete bottom plate is guaranteed, the anti-bed load abrasion capacity of the concrete bottom plate is remarkably improved, and the service life is prolonged; the concrete is suitable for construction of anti-abrasion concrete bottom plates of buildings and hydraulic concrete structures with the requirement for resisting abrasion of high-speed water flow.

The invention discloses a suspended sediment stratified sampling device, comprising a plurality of sampling components, a first lifting rope and a second lifting rope; each sampling component comprises a sampling tube, end caps arranged at both ends of the sampling tube, and a control component for controlling the end caps at both ends to remain open or automatically closed; a sleeve is connected to the sampling tube of each sampling component, the sleeve passes through the vertical center of the sampling tube, the lower end of the sleeve of the adjacent upper layer passes through the bottom of the sampling tube and is provided with an inner convex ring, and the upper end of the sleeve of the adjacent lower layer passes through the sleeve of the adjacent upper layer and is provided with an outer convex ring; one end of the first lifting rope passes through the sleeves of each layer in turn and is fixed to the sampling component of the bottom layer, and the other end is connected to the first winch of the lifting device, one end of the second lifting rope is fixed to the sampling component of the top layer, and the other end is connected to the second winch of the lifting device. The invention can reduce the height of the equipment, reduce the volume of the equipment, reduce the lifting height requirement during the sampling process, and is convenient for storage and transportation.

The present invention discloses a test device and test method for the probability of non-uniform sand movement. The device includes a water tank, a sediment feeder, a bed simulation plate, a bed load collector, and a suspended load collector. The method specifically includes: firstly dyeing sediments of different particle sizes to obtain non-uniform dyed sand, sticking sediments of the same grade to the bottom of the water tank to form a rough plate, and arranging the sediment feeder, the bed load collector, and the suspended load collector from top to bottom; soaking the non-uniform dyed sand and spreading it on the sediment feeder, giving a water flow intensity so that the sediment is in partial transport or full transport, and opening the sediment feeder after the water flow is stable to start the test until the sediment stops moving. Collect the sediment in the bed load and suspended load collectors, dry and sieve them, and weigh the dyed sand of different particle sizes. The ratio of the weight of the graded dyed sand obtained by the two collectors to the initial weight is the starting probability and the suspension probability of the non-uniform sand. The present invention obtains two movement probabilities at the same time in one test, with low cost and high efficiency and accuracy.

The invention discloses an aerated stirring suspended sediment experiment sand adding device, comprising a suspended sediment stirring cylinder, a stirring shaft, stirring blades, an air pump, an air inlet conduit, a first aeration valve, a suspended sediment outflow valve, a variable frequency water pump, a flow meter, an outflow pipe, a suspended sediment outflow port, and a second aeration valve. The stirring blades are fixed on the stirring shaft to form a stirrer, which is installed at the central axis position of the suspended sediment stirring cylinder. The bottom of the suspended sediment stirring cylinder is connected to the top center position of the suspended sediment outflow port through an outflow pipe. The suspended sediment outflow valve, the variable frequency water pump, and the flow meter are sequentially installed on the outflow pipe. The air pump is connected to the air inlet conduit, which is divided into two paths, one of which is connected to the hemispherical aeration port at the bottom center of the suspended sediment stirring cylinder through the first aeration valve, and the other is connected to the side bottom of the suspended sediment outflow port through the second aeration valve. The invention makes the water and sand in the sand adding container evenly mixed without residue, the sand adding port is not silted, and the suspended sediment concentration is more accurate and stable during the experiment.

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 invention relates to the technical field of soil and water monitoring, and discloses a method for monitoring and predicting soil and water loss in a small watershed. The method can predict the amount of soil erosion through an established general mathematical model, and provide data support for the implementation of soil and water loss prevention and control work. A collecting device and a data acquisition device are arranged in a selected monitoring field, the collecting device can collect slope runoff to the same outlet, the data acquisition device can respectively collect rainfall and suspended mass, and manual weighing can obtain displacement mass data. Multiple groups of erosion data can be obtained by collecting rainfall, suspended mass and displacement mass within a period of time, and a data correlation analysis method is used to perform curve fitting on multiple groups of erosion data to obtain a general mathematical model. The general mathematical model can predict the amount of soil loss within the rainfall period through the rainfall and suspended mass collected by the data acquisition device, and is conducive to formulating corresponding soil and water loss prevention and control measures according to different situations.

The invention discloses a reservoir suspended load sediment content real-time measurement method based on machine vision. The method comprises the following steps: S1, collecting a water body surface image; s2, carrying out denoising, enhancement and segmentation preprocessing on the image to identify a color difference value; s3, calculating the real-time suspended load sediment content on the basis of a multi-term Logistic model; s4, the change trend is analyzed through a CNN-LSTM model; and S5, performing early warning according to a preset threshold value. According to the invention, non-contact and non-sampling real-time monitoring and early warning are realized, and the defects of a traditional method are overcome.

The present invention provides a method and device for simulating and estimating the flow and suspended sediment content of rivers in data-free areas. The method integrates analysis, simulation, and estimation, enabling simple, rapid, and accurate derivation of the water-sediment correlation and the establishment of a water-sediment simulation and estimation model, thus solving the problem of calculating water and sediment content for rivers in data-free areas over the years and months. The method comprises: Step 1: constructing a flow simulation model for the target area based on data from a river section A that is in the same river system or an adjacent basin as the target data-free area and has observed data on measured flow Q and suspended sediment content CS; Step 2: constructing a suspended sediment content estimation model based on the flow Q and suspended sediment content CS data for river section A; Step 3: simulating the flow of a river section B in the data-free area based on the flow simulation model constructed in Step 1; and then estimating the suspended sediment content of B based on the suspended sediment content estimation model constructed in Step 2.

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.

An experimental device and method for measuring a motion probability of nonuniform sediment are provided. The method includes: dyeing sediment of different particle sizes to obtain nonuniform dyed sediment, sticking sediment with the same grades to the bottom of a flume to form a rough plate; soaking the nonuniform dyed sediment, laying the nonuniform dyed sediment on the sediment feeder, transporting the sediment by water with given intensity, and once the flow is stable, starting the sediment feeder to perform a test until the sediment stops moving. Collecting, drying and sieving the sediment in the bedload collector and the suspended load collector, and weighing the dyed sediment of different particle sizes. Computing the incipient probability and the suspension probability respectively by measuring the weight ratios of the sediment of different grades from the two collectors to the initial ones.

The invention discloses a river basin sediment production estimation method based on a dynamic evolution process of a river-blocking barrier lake, and the method comprises the steps: carrying out the comparative analysis of key physicochemical characteristic parameters through an identification event layer in a residual barrier lake deposition sequence, and constructing a disaster chain extreme surface process river basin sediment production estimation method. Water level changes, hydrodynamic conditions and material source changes of the barrier lake are comprehensively analyzed, different sand production stages from the stable period, the decline period and the extinction period of the barrier lake are divided, the sediment change history from lacustrine facies suspended load to flood plain bed load is analyzed, and a complete barrier lake formation-evolution full life cycle evolution process mode is constructed. A layered triangular irregular network model is constructed to obtain layered accumulated sediment volume data, the layered volume and mass are calculated based on a dry density field of sedimentary stratification and spatial interpolation so as to calculate the total sediment yield, a physical information neural network model inverts a sedimentary thickness field, sediment yield estimation is achieved, and the non-stationary dynamic evolution characteristics of water and sediment of the barrier lake are quantified.

The present invention discloses a river hydrological surveying and monitoring method, which specifically relates to the technical field of hydrological monitoring, and specifically comprises the following steps: based on historical data, collecting hydrological information of areas prone to siltation, obtaining suspended sediment content information, water flow information and water level information of areas prone to siltation, and comprehensively analyzing to generate high-risk signals, medium-risk signals and low-risk signals; if high-risk signals appear in multiple areas prone to siltation, adjusting the strategy for handling siltation in areas prone to siltation based on comprehensive evaluation results of outliers of suspended sediment accumulation and outliers of suspended sediment abnormality duration in multiple areas prone to siltation; the present invention helps to more accurately warn professional staff of siltation in areas prone to siltation, and optimize the priority of maintenance and management work in multiple areas prone to siltation.

The invention discloses a double-layer back-silting observation device for collecting suspended load and bed load, which is placed in a river channel and comprises a first back-silting box for recycling suspended load and a second back-silting box for recycling bed load, the first back-silting box is arranged above the second back-silting box, and the second back-silting box is arranged above the first back-silting box. Collecting openings are formed in the top of the first back-silting box and the top of the second back-silting box, and the first back-silting box and the second back-silting box are connected through a connecting piece, so that a flowing gap allowing bed load and water to flow is formed between the first back-silting box and the second back-silting box. By the adoption of the technical scheme, suspended load is collected through the first back-silting box, flowing of bed load and water is facilitated through the flowing gap, so that the bed load is conveniently collected through the second back-silting box, the first back-silting box and the second back-silting box are matched, the bed load and the suspended load are collected at the same time, and the collecting efficiency is improved; meanwhile, the suspended load and the bed load are collected at the same position, so that the observation precision can be improved.

The invention relates to the technical field of water body sample collection, in particular to a rapid collection and separation device and method for suspended load sediment and surface sediment in a water body, and the rapid collection and separation device comprises a plurality of collection mechanisms which comprise an outer protection assembly, a power increasing assembly arranged above the outer protection assembly, an adsorption assembly arranged in the outer protection assembly and a locking assembly arranged below the outer protection assembly; the outer protection assembly comprises an outer protection box and a box cover fixed to the front end of the outer protection box in a matched mode through bolts, the power increasing assembly comprises an outer protection cylinder, a cylinder cover, fan blades, an abutting disc and a rotating sleeve, and the adsorption assembly comprises an adsorption sleeve, a collecting bag and a rotating rod; the traction mechanism comprises a guide rope and a counterweight assembly arranged at one end of the guide rope, the multiple collection mechanisms are arranged in an array mode in the axis direction of the guide rope, and the outer protection assembly is fixedly matched with the guide rope located on the upper portion through a locking assembly. The device can be effectively suitable for flowing water bodies, and collected samples are good in richness.

The invention relates to the technical field of debris flow prevention and control, in particular to a novel honeycomb debris flow blocking structure of a water diversion project and a construction method thereof. The structure adopts a spatial honeycomb leakage type design, and is formed by sequentially connecting an upstream grid structure, a downstream multi-section honeycomb structure and an outlet energy dissipation and scour prevention section. The upstream grid structure is provided with multiple layers of water inlets for introducing water flow and blocking debris flow impact; the downstream honeycomb structure discharges suspended load through multiple stages of energy dissipation steps and orifices; and the outlet section adopts a diffusion type energy dissipation and scour prevention design. Bed loads in debris flow can be effectively intercepted, suspended loads are discharged, the arresting efficiency and the structural durability are improved, and the structure is suitable for debris flow prevention and control of water diversion projects in mountainous areas and has the advantages of being high in impact resistance, low in manufacturing cost and easy and convenient to construct.

The invention discloses a double-U-shaped lifting rod opening and closing type suspended load continuous sampling device and a sampling method, and belongs to the technical field of hydrological monitoring. The device comprises a double-U-shaped lifting rod opening and closing mechanism, a stratified sampling assembly, an intelligent control system, a base lifting system and a floating ball auxiliary structure, and a sampling bin end cover is controlled to be opened and closed through linkage of a double-U-shaped lifting rod and a stepping motor; an intelligent control system is integrated with a pressure / temperature sensor to achieve accurate layered triggering, and a base lifting system (a lead filling square plate, an underwater winch and a relay buoy) is matched with a floating ball to support unattended sampling in severe weather such as typhoon. The sampling method comprises the steps of system initialization, end cover opening, lowering monitoring, layered bin closing and recovery maintenance. According to the invention, single-person operation is realized, high efficiency, accuracy, labor saving and compliance are considered, the device is suitable for complex environments such as different water depths, high sand contents and severe weather environments, and hydrological specification requirements are met.

The invention relates to the technical field of engineering computational fluid mechanics, and provides a rapid calculation method for water-sediment two-phase flow of suspended load fine particles in a water pump, and the rapid calculation method comprises the following steps: firstly, under the nominal sediment concentration condition, defining an interaction retardation factor to represent the interaction retardation effect between water-sediment two-phase movement; determining a sand phase velocity calculation formula; then determining an interactive retardation source item, and adding the interactive retardation source item into a water phase momentum equation to reflect the momentum change of a water phase under the influence of suspended load fine particles; and finally, sequentially solving the sand phase velocity and the water phase velocity under a transient numerical calculation framework of the water pump. According to the rapid calculation method, separated solution of the concentration field and the velocity field of the water-sand two-phase flow of the suspended load fine particles in the water pump is fully achieved, the characteristics of the water-sand two-phase flow of the suspended load fine particles in the water pump can be accurately and efficiently predicted, and the aim of considering calculation precision and calculation efficiency is achieved; therefore, a new thought is provided for large-scale complex engineering calculation.

To provide a load stabilization system, a system for stabilizing swing motion of a suspended load, and a method for stabilizing the load stabilization system and the swing motion of the suspended load.SOLUTION: This load stabilization system comprises a completely automated self-power type device that uses thrust for canceling and controlling horizontal and rotational motion of an external load. The self-power type device is temporarily fitted to a load, a cable or a boom, and not dependent on a platform (for example, characteristics of helicopter (own ship) on which it is suspended.SELECTED DRAWING: Figure 1

The invention discloses a pit throwing site selection and mud throwing strength planning method and system in sea reclamation engineering. The method comprises the steps that firstly, a hydrodynamic mathematical model and suspended load sediment transportation are constructed through a two-dimensional shallow water equation and a convection diffusion equation; secondly, on the basis of the established mathematical model, a model capable of being applied to an actual project is formed through a parameterization means by combining the actual situation of the project, and finally the loss rate calculation under different pit throwing positions and mud throwing strengths is carried out through the general model. According to the scheme, multi-dimensional information such as construction time, mud blowing ship construction parameters, hydraulic reclamation construction data and soil texture detection reports is comprehensively considered, and an advanced numerical simulation technology and a flow field analysis method are introduced, so that the silt loss rate under different working conditions is accurately predicted; meanwhile, according to the scheme, direct planning of pit throwing site selection and mud throwing strength is concerned, prediction and control of the wastage rate are indirectly optimized by introducing numerical simulation and flow field analysis, and therefore systematicness and comprehensiveness of sea reclamation project planning are enhanced.

The application discloses a kind of high sediment concentration remote sensing inversion method and device of suspended load based on Sentinel-2 image, first, the satellite multispectral data and measured sediment concentration data of target water area are collected, and are preprocessed;Then the initial spectral feature set including the band feature combination of visible light-short wave infrared range is constructed, then the cross-validation recursive feature elimination algorithm (RFECV) is used to carry out preliminary screening from initial feature library, then according to spectral sensitivity analysis, the optimal feature subset is obtained by fine screening;Again, using random forest (RF) model is based on optimal spectral feature and sediment concentration data set training, constructs suspended load sediment concentration inversion model;Finally, the model is applied to realize the remote sensing inversion of high sediment concentration of suspended load, generates the sediment concentration time series of target water area.The present application effectively overcomes the common spectral saturation problem under high sediment concentration condition, can realize high-precision inversion in 0-45 kg / m³ concentration range, significantly improves the robustness and accuracy of suspended load high sediment concentration remote sensing inversion.

The embodiment of the invention provides a method and device for determining riverbed coarsening level assignment, electronic equipment, a computer readable storage medium and a computer program product. The method for determining the layering of the riverbed coarsening layers comprises the following steps: acquiring an initial water and sediment condition of a target river reach; wherein the riverbed of the target river reach is a sand-doped pebble riverbed; based on the initial water and sediment conditions, by means of a preset riverbed coarsening layer gradation calculation rule, riverbed coarsening layer gradation when the target river reach reaches the limit scouring condition is determined; wherein the limit scouring condition is that the sediment scouring thickness and the sediment deposition thickness of the riverbed reach dynamic balance; and pushing the riverbed coarsening level to a user terminal. By means of the method, the response relation between riverbed scouring coarsening and conversion of bed sand, bed load and suspended load can be represented, and the calculation precision of the natural wide grading riverbed is improved.

The invention discloses a method for constructing a pipe bottom sediment scouring model of an SWMM open source model, which comprises the following steps of: S10, constructing a one-dimensional pipe bottom sediment scouring and depositing theoretical model by combining an SWMM water quality model and a two-dimensional suspended load scouring and depositing function; s20, establishing a theoretical model numerical calculation equation according to the one-dimensional pipe bottom sediment scouring deposition theoretical model and an SWMM water quality model numerical method; step S30, updating an SWMM water quality open source calculation engine based on the theoretical model numerical calculation equation; and S40, calling the SWMM water quality open source calculation engine to calibrate the pipe bottom scouring parameters of the localized model. A convenient and efficient water quality model is provided for research on river discharge pollution of a pump station of an urban rain drainage system, the model integrates the advantages of a scouring model and a sand carrying force model, improvement is carried out based on an SWMM open source model, the method is simple and easy to implement, and the depth and efficiency of research on pollution movement change of the rain drainage system are improved.

The present invention discloses a real-time monitoring device for suspended load and bed load sediment transport rate and a monitoring method thereof. The device comprises an eccentric funnel whose edge is flush with the riverbed surface, a transmission shaft driven by a first motor is arranged at the bottom of the eccentric funnel, a sand scale is fixedly installed on the transmission shaft at a position directly opposite to the lower end opening of the eccentric funnel, a pressure sensor is arranged at the bottom of the sand scale, a funnel-shaped sand storage chamber is arranged below the transmission shaft, the lower end opening of the sand storage chamber is connected to the bottom sand inlet of the inclined upward sand transport pipe, a spiral blade extending from the bottom sand inlet to the upper sand outlet is arranged in the sand transport pipe, and the spiral blade is driven by a second motor. The device disclosed by the present invention can effectively measure the suspended load and bed load sediment transport rate on the same cross section of the river, is easy to operate, and has little disturbance to the water flow conditions. The lifting device can be used to realize the measurement of the suspended load sediment transport rate at different heights of the same water-passing cross section, which is of great significance for laboratory simulation experiments.

The invention discloses a density difference-based sediment content stratified observation method and device. The method comprises: running a water level meter and recording the tide level in real time, running a sensor, turning a rotary knob to connect a coil with an electric wire, observing the pressure difference on the i-th sealing box, i∈[1, N], and not observing the remaining i-1 measuring points, obtaining the clear and turbid water pressure difference from a piston to a water surface through a sensor and an electronic balance, obtaining the clear and turbid water pressure difference between an upper and lower water layer through processing by the sensor and the electronic balance, and calculating the stratified sediment content and the suspended sediment transport rate. The invention adopts the sediment content stratified observation method and device with the above structure, which can reduce costs, improve efficiency and increase measurement accuracy.

This invention discloses a method, system, and medium for determining the suspended sediment transport threshold at the watershed outlet and attributing the main controlling factors. The method includes the following steps: 1. Watershed data and multi-factor coding; 2. Definition and extraction of physical constraint thresholds; 3. Batch simulation of multiple scenarios; 4. Generation of monthly-scale threshold sequences; 5. Control variable attribution analysis. This application achieves a formal definition and extraction of the suspended sediment transport threshold at the watershed outlet within a distributed water and sediment model framework. Based on the control variable method and massive scenario simulation, it quantitatively identifies and ranks the contributions of different natural and anthropogenic factors to the change of this threshold, thereby providing a scientific basis for watershed sediment regulation and management.

The invention discloses a suspended load sediment monitoring precision optimization method, and belongs to the field of digital measurement, and the method comprises the steps: configuring a plurality of hydrological devices to form a monitoring line, and constructing a coordinate system; making a tendency chart corresponding to the equipment code by the plurality of first features obtained respectively; inputting the second feature into a server and associating the second feature with a trend chart; any trend chart serves as first data, the second feature is mapped on the trend chart corresponding to the first data according to the error coefficient to form a coverage area, and the server judges whether the trend chart is approximate to the coverage area or not. Historical data of the monitored water area is obtained, the server judges whether the fluctuation characteristics are effective or not through the average deviation value, the server inputs the fluctuation characteristics and first characteristics in the coverage area into the adjustment model, and the adjustment model outputs the characteristic value of the water level layer after weighting operation; the problem that large errors exist in obtained results due to the fact that automatic monitoring equipment is limited by discontinuity and volatility during high-frequency sediment sampling is expected to be solved.

The invention provides a lightweight deep learning model-based water and sediment hysteresis loop automatic classification method and system, and relates to the technical field of hydrology and water resource and river sediment monitoring. The method comprises the following steps: firstly, acquiring runoff and suspended load concentration process data of a karst basin rainstorm event, completing event division, time alignment and unit unification, and mapping a runoff-suspended load concentration relation into a lag loop image; constructing a training set, a verification set and a test set through image preprocessing and data enhancement; a lightweight convolutional neural network is adopted for training and verification, and a hysteresis loop classification model is obtained; and inputting a to-be-detected image into the model for reasoning, and outputting the category and confidence of the lag loop. According to the method, standardized imaging and lightweight intelligent identification of the hysteresis loop are realized, and the problems of high subjectivity of manual interpretation and difficulty in complex form identification are solved.