124 results about "Sediment transport" patented technology

The invention relates to the technical field of river channel desilting treatment, in particular to a dynamic simulation and optimization decision-making-based river channel silt treatment method, which comprises the following steps of: acquiring and treating historical and real-time multi-dimensional environmental data of a to-be-treated river channel and an influence area of the to-be-treated river channel; a river basin process simulation system capable of simulating river water power, sediment transportation, pollutant migration and transformation and ecological response processes is constructed, decision variables forming a river regulation scheme are defined in a parameterized mode, a multi-target optimization problem is defined and set in a formalized mode, a multi-target optimization engine is adopted, and the river regulation scheme is optimized. The method comprises the following steps: embedding a drainage basin process simulation system as a core evaluation module into an optimization iterative loop, implementing an optimization scheme, and continuously monitoring the environmental state change in the implementation process and after the implementation; the method can accurately predict the long-term and short-term influence of different treatment schemes in multiple aspects of hydrodynamic force, silt, pollutant migration and transformation, ecological response and the like, and solves the problem of comprehensive treatment of sludge.

The invention belongs to the technical field of bridge safety evaluation, and particularly discloses a method and a system for evaluating local scouring of a bridge pile foundation based on a flow velocity strain rate. A calculation model of a local scouring pit form and a maximum scouring depth of a river-sea crossing bridge pile foundation is established, and a Reynolds stress tensor is converted into a flow velocity strain rate scalar; the method comprises the following steps: providing an erosion-deposition model, analyzing an erosion-deposition rate, establishing a scouring depth relationship, utilizing a sediment transportation model of grid unit storage parameters, simulating dynamic response of a water-sediment mixture, and triggering sediment sliding and updating a riverbed terrain when the dip angle of a scouring pit is at a supercritical slope by virtue of a slump model. All the models cooperate to achieve efficient simulation of local scouring of the pile foundation. According to the method, the form evolution and the maximum scouring depth of the local scouring pit of the single pile and the pile group can be efficiently and accurately calculated, and support is provided for bridge pile foundation design and anti-scouring structure optimization.

The invention discloses an indoor water tank sediment pushing characteristic acquisition system and method, the system mainly comprises a water tank main body, a buffer unit, a drainage adjusting unit, a sediment throwing device, an imaging unit, an adjustable support and a data processing unit, and according to the method, non-contact data acquisition is carried out through a high-definition camera and a three-dimensional terrain measuring instrument; automatic identification, parameter extraction and migration speed calculation of landforms such as sand waves are achieved, the sediment bed surface is not touched in the whole process, damage to the bed surface form caused by traditional contact type measurement is eliminated, and the authenticity and reliability of data are ensured. Meanwhile, the buffer design of the combination of the flow slowing plate and the multi-stage water baffle is adopted, the kinetic energy of water flow is effectively dissipated through the graded water outlet structure, the impact force of injected water flow is greatly reduced, the bed surface is prevented from being scoured in the initial water injection stage, and the stability of the initial test condition is powerfully protected.

The invention provides a watershed water right marketization configuration method and device under water-sediment coupling constraint, and the method comprises the steps: constructing a water-sediment coupling constraint model which comprises a plurality of constraint conditions, and the constraint conditions are used for constraining the sediment transportation and deposition conditions in a water transportation process; establishing a multi-target water right optimization configuration model based on the importance of various water consumption subjects in the drainage basin and a preset water right distribution strategy; solving the multi-objective water right optimal configuration model by adopting a multi-objective evolutionary algorithm and constraint conditions, and generating a candidate water right configuration solution set; selecting a feasible solution set from the candidate water right configuration solution set based on constraint conditions; scoring each solution in the feasible solution set, and sorting according to a scoring result; and obtaining an optimal water right configuration solution set based on a sorting result. According to the method, the safety and ecological requirements of a watershed water-sediment system can be guaranteed while the water right is reasonably distributed.

The invention discloses a delta-beach bar composite sand body prediction method, which comprises the following steps of S1, acquiring geological background data of a target work area, and dividing delta and beach bar deposition to obtain a beach bar deposition thickness; s2, carrying out source and sink system analysis, establishing a sediment transport channel path, and obtaining a sand body transport path plane distribution diagram; s3, the ancient landform, ancient wind field features and ancient wave field features of the target work area in the deposition period are restored, the ancient landform height and the distance to the source area of the underwater ancient protrusion are obtained according to the ancient landform, and the features include the ancient wind direction, the ancient wind path, the ancient water depth and the ancient wave height; s4, determining a favorable development zone, a favorable development layer section and a favorable development target zone of the delta-beach bar composite sand body; and S5, obtaining distribution characteristics of the delta-beach bar composite sand body of the target work area according to the favorable development zone, the favorable development layer section and the favorable development target area. According to the method, the delta-beach bar composite sand body can be accurately predicted, and technical support is provided for oil exploration and development.

The invention relates to the technical field of data processing, and discloses a wind turbine generator optimization design method based on tidal current-wave-sediment coupling simulation. The method comprises the following steps: carrying out adaptive time step adjustment on marine environment data through a physical process intensity discrimination algorithm to obtain tidal current field, wave field and sediment transportation data; carrying out fluid-solid coupling calculation on the structural parameters of the wind turbine generator to obtain structural vibration response and ocean load distribution data, and predicting pile foundation scouring depth distribution; carrying out time-varying coefficient correction on the pile foundation bearing capacity parameters to obtain dynamic bearing capacity evaluation data; inputting a multi-objective optimization algorithm to obtain a Pareto optimal solution set; and obtaining a wind turbine generator optimization design scheme through engineering feasibility verification and screening. The technical problems that in existing offshore wind turbine generator design, tidal current-wave-sediment coupling simulation space-time scales are not matched, the pile foundation scouring prediction precision is insufficient, bearing capacity evaluation lacks time-varying characteristic consideration, and the multi-target optimization design capacity is insufficient are solved.

The embodiment of the invention provides a reservoir capacity dynamic monitoring method and system based on an unmanned aerial vehicle, and the method comprises the steps: obtaining a reservoir surface feature data set through the unmanned aerial vehicle, determining the boundary of a water area, scanning the bottom of the reservoir, obtaining the underwater terrain elevation and sediment distribution data, and constructing a three-dimensional terrain model; and determining terrain and deposit change data based on the three-dimensional terrain model dynamic change data of the continuous time sequence. Sedimentation space distribution characteristics are obtained through change rate analysis, and the sediment transportation amount and the sedimentation and deposition space rule are determined in combination with the water flow speed. Key driving factors are screened through correlation analysis, a sedimentation high-risk area is determined according to the key driving factors, and the change of sediments in the area is monitored, so that the change of the reservoir capacity is mastered. The reservoir siltation can be accurately and dynamically monitored, the high-risk area and the change mode are defined, the dynamic database is constructed to update the capacity change in real time, and important technical support is provided for reservoir management and flood control and disaster reduction.

The invention discloses an estuary sediment transport simulation method considering environmental factor coupling, and belongs to the technical field of offshore marine deposition dynamics, and the method comprises the steps: processing the geographic data of a target sea area, constructing a non-structural computational grid region of the target sea area, and generating an initial terrain field; for a target sea area, setting boundary conditions and an initial field, and constructing a three-dimensional hydrodynamic numerical model; performing systematic verification and parameter calibration on the three-dimensional hydrodynamic numerical model in S2 by adopting multi-source observation data; based on the three-dimensional hydrodynamic force numerical model verified in S3, constructing a three-dimensional hydrodynamic force-sediment coupling numerical model considering environmental factor driving; and performing systematic verification and parameter calibration on the three-dimensional hydrodynamic force-sediment coupling numerical model in the step S4 by adopting multi-source observation data. According to the method, the real-time dynamic coupling relation between the environmental factors and the sediment settling velocity is established by modifying the sediment settling velocity equation, the flocculation effect of the estuary high-concentration fine-particle sediment is represented, and the accuracy of suspended sediment concentration simulation is improved.

The invention relates to the technical field of environmental governance, and discloses an alpine region reservoir area water and sediment scheduling and water quality scenario prediction method comprising the following steps: river network segmentation and node classification; embedding ice kinetic parameters; transporting and correcting low-temperature silt; carrying out low-temperature adaptation on water quality parameters; performing dynamic boundary transfer and joint solution; and carrying out synchronous real-time iterative calculation. According to the method, ice kinetic parameters are embedded in a one-dimensional Saint-Venant equation, and the coupling relation between the thickness of the ice cover and the hydraulic element is dynamically solved by correcting the effective cross-section area in a continuous equation and the friction gradient in a momentum equation and adopting an iterative algorithm. Therefore, the water level fluctuation in the ice dam forming and outburst process is accurately described, and the problem that an existing model is insufficient in response to ice period hydraulic sudden change is solved.

The invention discloses a cold region water and sediment function connectivity quantification method. The method comprises the following steps of S1, obtaining basic raster data of a research region and performing preprocessing; s2, determining sources and catchment conditions of rivers in the drainage basin, and performing catchment and sediment transport unit identification on a GEE platform; s3, a D-Infinity (DINF) algorithm is applied to determine the flow direction of watershed water flow, an upslope drainage threshold value is defined, and the contribution area of the unit is obtained based on iterative calculation of the flow direction of watershed water flow and the upslope drainage threshold value; s4, writing the weighting factor of each unit and calculating the component factor of each unit; s5, calculating an uphill component and a downhill component of each catchment and sediment transport unit, and sequentially performing iteration and quantitative calculation in combination with the S3 to obtain high-resolution cold region water and sediment function connectivity raster data of the whole drainage basin; the method breaks through the current situation that the method is not suitable for large-area cold region drainage basin calculation, can analyze the response of thermal erosion to the scale of the cold region drainage basin, can also clarify the complex cold region water and sediment cascade process, and is of great significance to cold region ecological protection and landscape evolution research.

The invention relates to the field of seabed sediment classification mapping, and provides a seabed sediment classification mapping method based on shallow stratum profile data, which comprises the following steps: acquiring sensor data of a target seabed, including multi-beam topographic data, side-scan image data, seismic data and shallow stratum profile data; multi-dimensional acoustic-terrain-seismic features are constructed, acoustic feature matching is carried out on multi-beam terrain data and side-scan image data, seismic data are introduced, and an extended hierarchical model is constructed; constructing a preliminary submarine topography model diagram by using a spatial interpolation algorithm, repairing a preliminary missing region by using a generative adversarial network, generating a complete submarine topography model diagram, embedding multi-dimensional acoustic-topography-seismic features, and predicting a sediment migration trend; and generating a seabed substrate classification planar graph and a three-dimensional geological profile map, and performing seabed substrate classification mapping in combination with a sediment migration trend. According to the invention, the resolution and integrity of the submarine topography model can be significantly improved, and the dynamic classification map reflecting the current and future patterns is generated.

This invention belongs to the field of coastal engineering and ecological restoration technology. It discloses a method for optimizing the design of beach ecological restoration trenches based on hydrodynamic simulation. The method includes: collecting beach hydrological datasets, topographic datasets, and ecological datasets, and preprocessing them. The hydrological dataset includes wave data, tidal current data, storm surge data, and sediment transport data. The topographic dataset includes shoreline slope, beach elevation, underwater topography data, and sediment source storage data. The ecological dataset includes tidal flat vegetation distribution, benthic organism density, ecologically sensitive area range, and water environment quality data. This invention, through the coupled processing of hydrological, topographic, and ecological multi-source datasets, obtains hydraulic reference values ​​and topographic adaptation values ​​for the trench, directly reflecting the regional dynamic conditions and the degree of topographic adaptation, significantly reducing the workload of manual calculation and trial and error.

A method for calculating the bedload sediment transport rate by correcting the friction coefficient in the bed sediment movement is provided, including the following steps: S1, creating a calculation formula of a friction coefficient; S2, determining a calculation bedload sediment transport rate formula per unit width; S3, transforming the calculation formula of the bedload sediment transport rate per unit width into a dimensionless form; and S4, substituting the calculation formula of the bedload sediment transport rate per unit width obtained in the S2 into the S3 to obtain a bedload sediment transport rate formula with a corrected friction coefficient.

The invention discloses a suspended sediment transportation and reservoir desilting system, and relates to the technical field of hydraulic engineering, the system comprises an acoustic control array module used for forming an acoustic potential well in water above a reservoir bottom sludge layer to capture sediment particle groups in the reservoir bottom sludge layer; the sediment gathering and collecting module is used for collecting sediment particle groups and gathering the sediment particle groups at a sediment gathering target point to form slurry; the control unit is used for generating an acoustic potential well moving path based on the acoustic control array module position information, the reservoir bottom terrain and the sediment collection target point, and is used for controlling emission parameters of the acoustic control array module based on the acoustic potential well and the movement state of the sediment particle population and the concentration of the sediment particle population; according to the invention, non-contact, directional and collaborative transportation of sediment particle groups can be realized, and the sediment particle groups are orderly guided to a collection point, so that low-energy-consumption, low-disturbance, high-efficiency and intelligent dredging operation is realized.

The invention provides a wide valley U-shaped channel mountain torrent debris flow prevention and control method based on a mountain torrent sediment transport rule, and the method comprises the steps: determining a formation region, a circulation region and an accumulation region of a large watershed debris flow channel, and determining debris flow channel parameters; determining the characteristics of the mud mark section; calculating debris flow characteristic parameters; a target bedrock section is selected, and the design height of a target dam body is calculated according to section characteristics of the target bedrock section, debris flow channel parameters, mud mark section characteristics and debris flow characteristic parameters; according to the method, an open type grating dam is arranged at a section where flood is often encountered, rolling type earth and rockfill dams are arranged at other positions of the section, and design construction is carried out according to a target design specification and the design height of a target dam body, so that the problem that when debris flow occurs, an existing prevention and treatment project loses efficacy due to deposition of silt carried by long-term erosion of mountain torrents is solved; and the service life of the prevention and treatment project in the drainage basin is greatly prolonged, and the expected effect can be achieved when debris flow occurs.

The utility model discloses a mold temperature controller circulation water tank structure, which comprises a water tank main body and a water tank main body top cover, the lower part of the water tank main body is of a semicircular structure, and a delivery pipe is arranged at the bottom of the outer side of the water tank main body along the length direction of the water tank main body; the contact position of the conveying pipe and the water tank body is of an open structure and forms a precipitation opening, a conveying auger is installed on the inner side of the conveying pipe, and a second motor is installed at one end of the conveying pipe. When the water tank is used, water sediments can enter the conveying pipe through the sediment opening, the sediments attached to the inner wall of the water tank body can be cleaned down through rotation of the cleaning scraper driven by the first motor and collected into the conveying pipe, and the sediment opening can be sealed by the cleaning scraper before the second motor drives the conveying auger to convey the sediments. And the water body cannot enter the conveying pipe or is prevented from entering the conveying pipe, so that water body waste during sediment conveying is reduced.

The invention discloses a basin sand reduction efficiency evaluation and regulation method based on a reservoir group topological structure, and belongs to the field of hydraulic engineering, and the method comprises the steps: S1, inputting basin hydrological data; s2, calculating accumulated runoff sediment transport and drawing a double-accumulation curve; s3, recognizing turning years of human activities on the water-sediment relationship through the double-accumulation curve mutation points, and dividing a natural period and a human influence period by combining the mutation points; s4, analyzing a water-sediment relationship, and calculating a drainage basin sediment reduction amount; s5, determining the topology type of the reservoir; s6, calculating an effective control drainage basin area; s7, establishing a relationship between the effective control basin area and the sand reduction rate; and S8, nonlinear regression equation modeling is carried out. The topology cutting effect theory is applied to reservoir group sand reduction efficiency evaluation, and the error problem of a traditional linear superposition model is solved; dynamic prediction of the long-term sand reduction cumulative effect of the cascade reservoir group under the watershed scale is realized; quantitative decision support is provided for newly-built reservoir site selection and built reservoir group optimization scheduling, and the river channel siltation treatment cost is reduced.

This invention proposes an early warning system and method for the impact of ecological submerged breakwaters on nearshore seabed morphology under tsunami wave action. The system includes: a feature extraction module that collects water pressure data inside and outside the breakwater and establishes a high-energy potential difference time window; a potential energy analysis module that retrieves data within the high-energy potential difference time window and performs differential analysis of the vertical gradient to generate the permeability per unit volume of the seabed surface; an erosion analysis module that obtains the loss coefficient and corrects the static critical initiation shear stress to establish a time-evolving erosion resistance threshold sequence; a concealment identification module that identifies concealed scour zones; and a graded early warning module that quantifies and accumulates the surplus characteristics of shear strength in concealed scour zones using sediment transport rates to obtain morphological loss characteristics, performs stability assessment of the breakwater support structure, and triggers graded collapse early warning. This invention achieves the identification and dynamic early warning of concealed scour risks under low flow velocity backgrounds by quantifying soil weakening caused by seepage.

The application provides a method, device and equipment for determining sediment connectivity, which comprises the following steps: obtaining effective concentration areas of each grid unit affected by land use in a target basin; obtaining weight factors and slope gradients of each grid unit; obtaining runoff flow velocity factors of each grid unit, and the concentration path lengths of each grid unit to the nearest river or the nearest deposition area; and determining a sediment connectivity index of the target basin according to the effective concentration areas, the weight factors, the slope gradients, the runoff flow velocity factors and the concentration path lengths. The effective concentration areas are introduced in the uphill component, which can reflect the influence of the land use type, boundary, quantity and position of the uphill on the uphill concentration area. The runoff flow velocity factors are introduced in the downhill component, which enhances the description and response capability of the sediment transport process. Therefore, the present scheme has a clearer physical meaning than other existing algorithms, and can more comprehensively and sensitively represent the erosion and sediment production influence of the land use change of the basin.

The present application relates to the technical field of river dredging treatment, and relates to a river sludge treatment method based on dynamic simulation and optimized decision, obtains and processes historical and real-time multi-dimensional environmental data of a river to be treated and an influence area thereof, constructs a watershed process simulation system capable of simulating river water dynamics, sediment transport, pollutant migration and transformation and ecological response process, parameterizes definition of decision variables constituting a river treatment scheme, formal definition and setting of a multi-objective optimization problem, adopts a multi-objective optimization engine, embeds the watershed process simulation system as a core evaluation module into an optimization iteration loop, implements an optimized scheme, and continuously monitors environmental state changes during and after implementation, the present application can accurately predict long-term and short-term effects of different treatment schemes in terms of water dynamics, sediment, pollutant migration and transformation and ecological response, and solves the problem of sludge comprehensive treatment.

The present disclosure relates to the technical field of watershed water and sediment regulation, and provides a method and device for predicting a watershed sediment transport ratio. The method comprises: obtaining a slope sediment yield parameter and a runoff parameter of a target watershed; calculating a target slope sediment yield according to the slope sediment yield parameter; calculating a target runoff according to the runoff parameter; and introducing the target slope sediment yield and the target runoff into a preset sediment transport ratio prediction model to predict a target sediment transport ratio. The present disclosure can greatly improve the application range and prediction accuracy of the prediction of the watershed sediment transport ratio.

The application discloses a silt treatment control method based on multi-stage filtration, which comprises the following steps: collecting multi-source sensing data of key nodes in an integrated facility in real time, and constructing a feature vector representing the current siltation state of the facility; inputting the feature vector as a boundary condition into a preset water-sediment transport coupling model, simulating and predicting the spatio-temporal evolution trend of the flow field structure and silt deposition in the facility in the future period, and outputting the prediction results including the filter pressure difference and the siltation thickness; inputting the prediction results and the current feature vector into a reinforcement learning decision engine after splicing, and outputting an optimal sand flushing instruction set that maximizes the cumulative reward; and issuing the optimal sand flushing instruction set to a programmable logic controller, and driving an actuator to complete the work in time sequence by the programmable logic controller. Thus, the rapid forward-looking prediction and adaptive sand flushing regulation of the siltation risk of the multi-stage filtration facility under the condition of high-sediment water flow are realized.

The application discloses a full-slope erosion and sediment transport simulation method combining soil properties and land use, collects corresponding erosion and sediment transport basic data of full slopes of beam and valley slopes in a basin, including soil data, terrain data, land use data, vegetation data and water and sediment data; based on the erosion and sediment transport basic data, terrain conditions and land use type boundary conditions, the erosion environment type of the full slope is automatically distinguished, and the initial to-be-optimized parameters affecting the erosion are obtained based on the erosion environment type; the initial to-be-optimized parameters are updated based on the cuckoo search algorithm until the optimal parameters are obtained; the slope combination and slope length in the terrain conditions and the land use type and vegetation coverage combination in the land use type boundary conditions are changed, a plurality of different scenes are obtained, the full-slope sediment production and transport evolution process is simulated based on the different scenes and the optimal parameters, and the slope sediment transport rate under different conditions is obtained.

A parameter continuous creep SWAT time-varying water and sediment simulation method, system and medium, the method comprises the following steps: constructing a SWAT database for land use scenarios before and after the yield calibration parameter set; 24 types of parameters are divided into continuous creep and fixed parameters, and an expression is embedded in the main loop of the SWAT source code; update parameter execution boundary, change rate, rollback control; output runoff and sediment results. Based on the transition matrix, the HRU land class transition path and intensity are identified, and the HRU differentiated creep coefficient and slope-river transmission lag factor are determined by combining slope, distance from river, confluence, hydrological connectivity and area; in the update, the runoff, surface erosion and sediment transport parameter coupling are established, and the water conservation, sediment transport continuity, peak suppression and abnormal rollback are executed. The present application embeds the transfer heterogeneous response and channel transmission into dynamic simulation, reduces the risk of parameter mutation, sediment shock and non-physical combination, and improves the continuity, stability and physical reasonableness in the gradual change period.

The present application relates to the field of dam safety monitoring, and relates to a kind of dam multidimensional safety monitoring method based on during flood peak.The method includes according to the water level time series data of each area of dam body, calculates water level rise rate;Extract peak inflow, combined with flood peak retention time and water level rise rate, obtain hydraulic influence coefficient;According to the time series data of each area silt content and inflow time series data, calculate sediment transport rate, combined with silt median particle size, obtain the influence coefficient of incoming sediment;Extract water head fluctuation main frequency and fluctuation amplitude, combined with dam real-time natural frequency and incoming sediment influence coefficient, obtain fluctuation influence coefficient;According to hydraulic influence coefficient and fluctuation influence coefficient, obtain flood peak dynamic influence coefficient;According to the real-time monitoring stress of each area and corresponding design bearing stress, obtain foundation safety margin, combined with flood peak dynamic influence coefficient, obtain actual safety margin;According to the change rate of actual safety margin of each area at continuous multiple time, judge whether to generate early warning information.

The utility model discloses a side groove spillway sand blocking and rectifying chute device suitable for high-silt-content water flow, which comprises a sand blocking and rectifying chute device consisting of a spillway upstream bottom plate, an overflow weir, a drainage tank contraction section and a side groove spillway, a side groove component consisting of a side groove bottom plate and a side groove opposite side plate, and a plurality of rectifying chute components, the rectification chute assemblies are arranged above the side chute spillway at equal intervals, each rectification chute assembly comprises a first water baffle and a second water baffle, and the first water baffle and the second water baffle are fixedly connected to the two ends of a rectification chute upstream plate correspondingly; by means of the rectification chute assembly and the sand blocking and collecting chute assembly, high-sand-content water flow forms beneficial spiral flow when flowing through the rectification chute assembly, scouring of harmful spiral flow to the side chute side wall is counteracted, meanwhile, the sand blocking and collecting chute assembly intercepts sand in the water flow and guides the sand to a sand conveying path through a sand collecting chute bottom plate, structure abrasion is effectively reduced, and the sand blocking efficiency is improved; and the overflow capacity is prevented from being influenced by sediment deposition.

The invention discloses a sediment transportation prediction data processing method and system based on bidirectional distribution characteristics, and relates to the technical field of data processing, and the method comprises the steps: obtaining a first riverway interval, a second riverway interval and a third riverway interval, and obtaining a riverway direction data sequence and a depth direction data sequence; obtaining a first longitudinal trend index, a second longitudinal trend index and a third longitudinal trend index, and obtaining a first vertical trend index, a second vertical trend index and a third vertical trend index; obtaining a longitudinal variation coefficient, obtaining a vertical variation coefficient, and obtaining a total variation index; if the total variation index is smaller than a preset threshold value, the distance between the to-be-predicted area and the sediment inlet is obtained, river channel direction prediction data of the to-be-predicted area is obtained, and depth direction prediction data of the to-be-predicted area is obtained. The method has the advantages of stability discrimination, quantification of the transport rule and dynamic association verification.

The invention relates to the technical field of hydrological sediment monitoring, and discloses a sediment content calculation method, which comprises the following steps: acquiring a single-point flow velocity vector, a single-point original sediment content and a total water depth of a measuring point; constructing a non-constant inertia index combining the flow velocity change rate and the single-point flow velocity modulus; determining a dynamic lag time window by using a non-constant inertia index and acquiring a reference sand content; calculating a vertical density gradient and a gradient Richardson number by using the reference sand content, and determining a turbulence suppression factor; respectively correcting a vertical flow velocity distribution function and a sand content distribution function by using a turbulence suppression factor and a non-constant inertia index, and constructing a vertical flow velocity distribution data column and a sand content distribution data column through iterative calculation; and integrating to obtain the single-width sediment transport modulus. According to the method, sediment response lag is corrected by introducing a non-constant inertia index and a dynamic lag time window, the damping effect of density stratification on turbulent flow is quantified by using a turbulent flow suppression factor, and the full-water deep-water sediment structure under the non-constant flow condition is accurately inverted by using single-point data.

The invention discloses a modeling method for dynamic deposition simulation and artificial intelligence fusion of meandering river point dam configuration, and belongs to the field of petroleum and natural gas development, and the modeling method comprises the following specific steps: I, collecting and preprocessing multiple types of data of a corresponding research area, simulating the distribution of a flow velocity field and a water depth field of an ancient river, and establishing a state conversion rule; according to the method, synchronous response of water flow movement and sediment migration can be achieved, the point dam side accumulation body forming process is accurately captured, the reasonability of configuration prediction is improved, and the method is suitable for point dam configuration accurate modeling in the complex sedimentary environment; meanwhile, accurate conversion from coarse resolution to high resolution can be realized, the description precision of the model is greatly improved, the geological loyalty and prediction capability of the model are remarkably improved, and a more scientific and comprehensive basis is provided for risk assessment and optimization decision of a development scheme.

The invention discloses a reservoir density flow on-way evolution calculation method based on an effective suspension work theory. The method comprises the following steps: 1, calculating a reservoir density flow submergence point; 2, reservoir density current submerging characteristic calculation; 3, reservoir density flow on-way evolution simulation; and 4, carrying out reservoir density flow evolution processing and visual display. The method has the advantages that the effective suspension work is used for judging sedimentation or suspension of suspended sediment in the density current, and the critical effective suspension work is used as a judgment condition for the balance state of the density current; the evolution process of the flow velocity, the sand content and the density flow layer thickness from generation of the reservoir density flow to the front of the dam is rapidly and efficiently calculated by combining density flow submerging judgment conditions, a density flow submerging characteristic calculation formula, a density flow self-similarity theory, a density flow accumulation depth control equation and an effective suspension work theory; and support is provided for ultra-long-distance sediment transportation of density flow. Meanwhile, after upstream water and sand conditions and dam discharge flow are input, the density flow velocity, the sand content on-way change process and the warehouse-out sand content can be obtained.