25 results about "River model" patented technology

The invention discloses a dynamic topology mapping and GPU heterogeneous flood coupling model real-time early warning method, and solves the problems of inflexible coupling of a one-dimensional model and a two-dimensional model, low calculation efficiency, poor dynamic response capability and the like in traditional flood simulation. A dynamic topology mapping mechanism is introduced to respond to emergencies such as dike burst and overflow in real time, the calculation efficiency is remarkably improved by utilizing a GPU heterogeneous parallel architecture, rapid and accurate simulation of the whole process of flood formation, evolution and submerging is achieved, reliable technical support is provided for flood control dispatching and emergency decision making, and the method is suitable for large-scale popularization and application. The method comprises the following steps: constructing a two-dimensional hydrodynamic model based on an unstructured grid, establishing a dynamic topology mapping mechanism and realizing GPU parallel numerical calculation; a two-dimensional model lateral connection coupling mechanism is constructed, dam overtopping flow is calculated in real time, and breach flow dynamic calculation of an improved DAMBRK method is carried out; multi-target parameter calibration, multi-dimensional model verification and one-two-dimensional model GPU collaborative parallel computing are realized.

The invention provides a river topography modeling method and device. The method comprises the following steps: acquiring section measurement data of each actually measured cross section in a target river; determining coordinate information of measurement points of all actually measured cross sections based on the section measurement data; performing cubic spline resampling on the actually measured cross section based on the coordinate information of the measurement points according to a preset number of sampling points to obtain coordinates of resampling points; performing linear interpolation on the adjacent actually-measured cross sections according to the coordinates of the re-sampling points in the river channel direction of the target river channel to obtain encrypted river channel cross sections and encrypted section data; and constructing a river channel model based on the encrypted cross section of the river channel and the encrypted section data. By means of cubic spline resampling and linear interpolation, terrain details are reserved, data requirements are reduced, cross section terrain data are supplemented, accurate supplement of the cross section of the river channel is achieved by means of the distance and gradient change between the cross section to be supplemented and the known sampling elevation cross section of the river channel, and therefore the model precision is improved.

The invention provides a river channel flow field state determination method and device, equipment and a storage medium, and the method comprises the steps: sampling river channel model parameters based on a hydrodynamic control equation to generate a hydrodynamic response sample set covering different feature combinations; and screening abnormal samples in the sample set to obtain an effective data set. According to statistical characteristics and a physical parameter prior range of an effective data set, static attributes and dynamic states of a river channel are coded into dimensionality-fixed structured representation, and a physical enhanced agent model taking the representation as input is constructed. A joint optimization target training model containing a data fitting item and a hydrodynamic control equation physical constraint item is adopted, target river channel entity attributes are converted into matched target structured representation through a space adaptation mechanism, the target structured representation is input into the trained model for flow field deduction, and a flow field state prediction result of the target river channel at the future moment is obtained. By adopting the method, the efficiency, accuracy and suitability of flow field prediction can be improved.

The invention relates to a river channel Manning roughness coefficient prediction method based on plant morphological characteristics. The method comprises the following steps: collecting physical attribute data and vegetation morphological characteristic parameter data of a target river channel; based on the physical attribute data, retrieving and matching through a preset river model database to obtain river model parameters, and constructing a river basic model; analyzing an influence rule of the morphological characteristic parameters on a Manning roughness coefficient, and establishing a corresponding influence relationship; optimizing and adjusting the basic model according to the relation to form a prediction model; and performing prediction by using the model, and outputting a Manning roughness coefficient result. By adopting the method, plant morphological factors can be effectively integrated, the prediction accuracy and practicability are improved, and the limitation of ignoring vegetation influence in a traditional method is solved.

The invention belongs to the technical field of river model topographic survey, and provides an automatic river model topographic survey device and system.The automatic river model topographic survey device comprises a track, a moving trolley is arranged on the track and comprises a base, two connecting shafts are symmetrically and rotationally connected to the bottom of the base, and a double-shaft driving motor is arranged on the connecting shaft at one end; wheels are fixedly connected to the two ends of the two connecting shafts, a storage battery is arranged at the bottom of the base, and an adjusting assembly is arranged on the base. The mobile trolley accurately moves along the track through the double-shaft driving motor, the whole range of the model can be covered, the rotating holder achieves 360-degree horizontal rotation through worm and gear transmission, the river model can be scanned in an all-around mode, it is ensured that no measurement dead angle exists, and the lifting component adjusts the height of the three-dimensional laser scanning head through lead screw transmission. The device adapts to terrains of different depths, transmission of all parts is stable, manual intervention is not needed, the model measurement time is short, and efficiency and data reliability are greatly improved.

The invention provides an exploration digital result-based earth surface twinborn scene modeling method and system, and belongs to the technical field of engineering geological exploration and geographic information systems. According to the method, exploration CAD terrain curved surface data and orthoimages are adopted to generate a real three-dimensional terrain grid model; adopting exploration CAD river, road and building boundary data to generate corresponding river, road and building three-dimensional grid models; dividing polygonal regions generated by boundary data of rivers, roads and buildings by adopting an ear cutting method; refining the river and road grid model to adapt to the grid spacing of the terrain grid model; the terrain grid model partially protrudes out of the river and road grid model, and proper correction is carried out; finally, mapping materials are given to the river model, the road model and the building model, and a three-dimensional digital twinning scene is generated finally.

The invention provides a control method and system for a river model sand adding system, and relates to the technical field of automatic control, effective water flow parameter data are generated by obtaining and verifying water flow parameter data in a river model, and the optimal sand adding amount proportion matched with the water flow state of the river model is calculated; through the control center, a sand adding control signal used for adjusting the sand adding rate is generated and verified, and a verified signal is obtained; the river model sand adding system is controlled to send a frequency adjusting instruction to the variable frequency pump so as to calculate the sand conveying flow power of the verified signal, a sand adding execution component in the river model sand adding system is adjusted, and the actual sand adding rate of the sand adding execution component after adjusting operation is adjusted; according to the method, dynamic matching between the actual sand conveying amount of the sand adding execution component and the theoretical sand needing amount is kept, rapid response and accurate matching of the sand adding rate to the unsteady-state water flow condition are achieved, and the accuracy and stability of water-sand balance simulation in a river model test are improved.

The invention belongs to the technical field of water environment management and ecological benefit evaluation, and particularly provides a cascade reservoir operation environment benefit calculation method, system and device based on water environment capacity change and a medium. Collecting water quality monitoring data, hydrological data, reservoir surrounding pollutant storage amount data and sewage treatment plant pollutant treatment unit price of a reservoir area and a research section before and after reservoir construction; calculating the daily average water environment capacity in a natural river state before the reservoir is built by adopting a river one-dimensional model; calculating the daily water environment capacity after the reservoir is built based on the reservoir dispatching characteristics; a market value method is adopted, the water environment capacity increment and the pollutant treatment unit price are combined, and the water body assimilative capacity change caused by the water body water environment capacity change is calculated so as to measure the environmental benefit brought by the water environment capacity change caused by the operation of the target reservoir. By coupling the water environment capacity difference and the pollutant treatment cost before and after the database construction, the accurate quantification of the water quality purification benefit is realized.

The utility model belongs to the technical field of river models, and particularly discloses a large-scale hydraulic tail water level control model which comprises a hydraulic model and a water level control assembly vertically arranged on the inner wall of the hydraulic model and used for discharging water above the working water level of the hydraulic model out of the hydraulic model. The water level control assembly comprises a water gauge which is vertically arranged on the inner wall of the hydraulic model, water level scale lines are arranged on the front face of the water gauge, and a submersible pump is arranged on the water gauge and slidably connected with the water gauge. And a water outlet of the submersible pump. A telescopic bearing column for supporting the drainage pipe is arranged below the drainage pipe; a water outlet of the drainage pipe extends out of the hydraulic model. The submersible pump is matched with the water gauge, so that non-manual control is realized, the tail water level control precision is greatly improved, and the problems of water level fluctuation caused by plate turning in a traditional method and difficulty in adjustment during small flow are solved.

The invention discloses a space-air-ground integrated flood runoff remote sensing monitoring method, system, equipment and medium, belongs to the technical field of urban safety, and aims to solve the technical problem of how to realize coupling of remote sensing non-contact measurement attributes and a river flow process and improve the accuracy of space-air-ground integrated flood runoff remote sensing monitoring. According to the technical scheme, on the basis of unmanned aerial vehicle low-altitude remote sensing and ground measurement, an accurate section three-dimensional digital river channel model is constructed through high-precision unmanned aerial vehicle topographic data and actually-measured river channel hydrological and hydraulic parameters, and the section three-dimensional digital river channel model is driven to calculate the river channel flow through water surface width sequence data provided by a remote sensing satellite. The maximum time resolution can reach the monthly scale, so that long-sequence river flow data and historical flow data backtracking are obtained; the method comprises the following steps: actually measuring a river section; constructing a section three-dimensional digital river channel model; extracting the water surface width in batches; and calculating the long-time sequence runoff volume.

The invention relates to an experimental device and an experimental method for urban surface-underground space flood simulation, the experimental device comprises an underground space model, a surface model and a rainfall simulation device, and the underground space model is internally provided with a plurality of underground building models; the ground surface model is located above the underground space model and comprises a ground model and a channel model, a river channel model, a pipe network model and a ground facility model which are located on the ground model, and the channel model is communicated with the ground model and the underground building model; the rainfall simulation device is configured to spray water drops to the earth surface model and simulate extreme rainfall. When the experimental device is in a working state, the rainfall simulation device simulates extreme rainfall to the earth surface model, the pipe network model collects and discharges the rainfall to the river channel model, and the river channel model discharges water; after the drainage capacity of the pipe network model and the river channel model reaches a threshold value, the ground model and the ground facility model cooperatively simulate the evolution process of waterlogging on the ground surface, and after waterlogging accumulation is higher than a preset value, the waterlogging enters the underground building model from the channel model.

The invention discloses a large river basin flood forecasting method based on an improved Xinanjiang model. The method comprises the steps of data collection and preprocessing, Xinanjiang model structure improvement, parameter calibration and optimization and flood forecasting and verification. According to the method, the Xinanjiang model is improved by considering the complex underlying surface conditions of the large river basin and the precipitation space-time distribution characteristics, and parameter calibration is performed by adopting the particle swarm optimization algorithm, so that the root-mean-square error of flood forecasting is reduced by about 30% compared with that of a traditional Xinanjiang model, and the certainty coefficient is improved by about 20%; in multiple historical flood event simulations, the fitting degree of the forecast flow and the actually measured flow is obviously better, and the flood peak value and the peak present time can be captured more accurately. And the improved model can better adapt to flood forecasting requirements of the great river basin in different seasons and different rainfall modes.

The utility model belongs to the technical field of hydrological measurement equipment, and provides a device for automatically measuring hydrological elements in a river model, which comprises a base, a plurality of wheels symmetrically arranged on the side edges of the base, a stand column fixedly connected to the top of the base, a supporting column fixedly connected to the stand column, and a connecting rod fixedly connected to the supporting column. The end part of the connecting rod is provided with a dismounting assembly, and the dismounting assembly is provided with an integrated sensor body. The dismounting assembly comprises a fixing plate fixedly connected to the end of the connecting rod, a sliding groove is formed in the fixing plate, and a Z-shaped clamping block is slidably connected into the sliding groove. The integrated sensor body is arranged to synchronously acquire hydrological element data such as water level, flow velocity, flow and sand content in real time, so that the measurement time is greatly shortened, the experiment efficiency is improved, a large amount of data can be acquired in a short time, and the requirement of a river model experiment on data volume is met; and the integrated sensor body can be quickly disassembled and assembled so as to be conveniently maintained or replaced.

The invention discloses a full-process automatic modeling method for a moving bed river model. The method comprises the following steps: S1, controlling intelligent crawler-type scarifying, leveling and compacting integrated equipment to scarify, level and compact model sand; s2, a left high-precision track and a right high-precision track which are parallel to each other are laid on the site; s3, movable bed terrain manufacturing equipment is arranged on the left high-precision track and the right high-precision track, and preliminary terrain manufacturing is conducted on the site in a precise leveling, scraping and trowelling mode in sequence; and S4, the fine trimming forming device trims the initial terrain in a rotary cutting static pressure mode, and final moving bed river model manufacturing is completed. The terrain making automation of the moving bed river model can be realized through the control system, the terrain making process can be effectively simplified, and the efficiency is improved; according to the three-dimensional digital elevation information, the elevation precision of terrain making is controlled through automatic equipment, high-precision making of the terrain can be achieved within the whole range of the model, and the precision of terrain making of the moving bed river model is effectively improved.

The invention provides a high-camber meandering river model construction method and device, equipment and a medium, and belongs to the technical field of reservoir geological modeling. The method comprises the following steps: on the basis of seismic interpretation, extracting and analyzing morphological parameters of a riverway and a breach fan of the high-camber meandering river, determining the minimum value and the maximum value of the parameters, and calculating an average parameter; then, on the basis of the parameters, multiple times of adjustment are carried out, a plurality of river channel three-dimensional models are constructed, the models are mapped into a grid model, and a river channel-point dam grid model is formed; by calculating azimuth angles and curvatures of grid points, breach fan micro-phase points are identified, breach fan simulation is carried out in a grid model by using the information, and finally a detailed high-camber meandering river three-dimensional geological model is constructed. According to the method, accurate acquisition and dynamic simulation of river morphological parameters and accurate identification of breach fan micro-phase points are realized, so that the simulation accuracy of a high-camber river model is improved.

The application provides a control method and system of a river model sand adding system, and relates to the technical field of automatic control. The water flow parameter data in the river model is acquired and verified to generate effective water flow parameter data, so as to calculate the optimal sand adding amount ratio suitable for the water flow state of the river model. Through the control hub, a sand adding control signal for adjusting the sand adding rate is generated and verified to obtain a verified signal. The river model sand adding system sends a frequency adjustment instruction to the variable frequency pump to calculate the sand flow power of the verified signal, adjust the sand adding execution component in the river model sand adding system, and adjust the actual sand adding rate of the sand adding execution component after the adjustment operation, so that the actual sand amount transported by the sand adding execution component and the theoretical sand demand amount are dynamically matched, the sand adding rate is quickly responded and accurately matched to the non-steady state water flow condition, and the accuracy and stability of the water and sand balance simulation in the river model test are improved.

The invention provides a zoning tracing evaluation method for direct and indirect hydrological benefits of a tracing LID measure, and relates to the technical field of urban rainfall flood management. According to the method, a coupling model of a PCSWMM one-dimensional pipeline and river model and a two-dimensional overland flow model is constructed, calibration and verification are carried out in combination with historical rainfall data and accumulated water monitoring data, drainage partitions are divided in a research area, and natural partitions and LID measure partitions are distinguished. According to the method, exclusive tracers are configured for different partitions, LID-free measure scenes and LID measure scenes are simulated respectively, a tracer contribution amount matrix and a contribution rate matrix are established, surface ponding amount is coupled to calculate surface ponding contribution change, decomposition is performed to obtain direct benefits and indirect benefits of the LID measures, and refined and quantifiable evaluation of hydrological benefits of the LID measures is realized.

The application provides a kind of test device for river bank concealed subgrade deep grouting, belongs to the technical field of subgrade grouting, including model component and detection component.Model component includes subgrade model, river model and mounting bracket, river model is fixed to subgrade model, mounting bracket is set to subgrade model and river model, and subgrade model is provided with grouting pipe, detection component includes fixing frame, pulp barrel, grout inlet pipe, grouting pump, grout outlet pipe, container, side plate and detector, fixing frame is fixed to mounting bracket, pulp barrel is detachably installed in fixing frame, one end of grout inlet pipe is communicated with pulp barrel, the other end of grout inlet pipe is communicated with grouting pump, grouting pump is fixed to mounting bracket, one end of grout outlet pipe is communicated with grouting pump, the other end of grout outlet pipe is communicated with container, container is fixed to mounting bracket, container is detachably installed in grouting pipe, side plate is sealed to subgrade model, and detector is fixed to side plate.The device can monitor the diffusion and distribution of slurry in time.

The invention discloses a similar simulation control method for roughness of an additive construction river model, and relates to the technical field of water conservancy projects. The method comprises the steps of obtaining prototype river course roughness actual measurement data and a geometric scale, and determining a target Manning roughness coefficient of each roughness control zone of a model bed surface; reversely determining a 3D printing process parameter combination corresponding to each partition based on the target Manning roughness coefficient; determining an interlayer rotation angle sequence for inhibiting anisotropy of the surface roughness; according to the printing process parameter combination and the interlayer rotation angle sequence, a multi-direction cross printing path enabling the deposition strips of all the printing layers to be crossed and overlapped in different directions is generated; and a control instruction is generated according to the path, additive manufacturing equipment is driven to execute layer-by-layer printing of the bed surface of each subarea, and the formed roughened bed surface plates are assembled to the water tank. According to the invention, the reverse analysis design of parameters and the control of resistance isotropy are realized.

The invention discloses an intelligent scarifying, leveling and compacting integrated device for a movable bed river model, which comprises a horizontally arranged bottom frame, the left and right sides of the lower part of the bottom frame are respectively provided with a crawler walking mechanism, the bottom frame is sequentially provided with a hydraulic pump station, a control cabinet and a battery pack from front to back, and the control cabinet is internally provided with a remote control signal receiver. The front part of the underframe is provided with a scarifying and leveling mechanism, and the rear part of the underframe is provided with a compacting mechanism. The crawler walking mechanism carries the scarifying, leveling and compacting integrated equipment, so that automatic operation of scarifying, leveling and compacting of model sand can be realized; all the parts are controlled to work cooperatively in a remote control mode, the device has the advantages of being high in automation degree and high in construction efficiency, especially after scarifying, leveling and compacting, the compactness of model sand in all the areas can be kept consistent, and a solid foundation is laid for follow-up moving bed river model terrain manufacturing precision.

The present application relates to the technical field of river model experiment, and discloses a fine river model uniform sand adding experiment device, which comprises a sand adding groove, a plurality of sand discharge holes are formed in the bottom end of the sand adding groove along the axial direction; an adjusting part is arranged in the sand adding groove, the sand adding width of the sand adding groove is adjusted by moving the adjusting part in the sand adding groove; a sand adding assembly comprises a sand adding unit and a moving unit, the moving unit is slidingly connected to the top end of the sand adding groove, the sand adding unit is arranged on the moving unit and is used for conveying water and sand mixture into the sand adding groove; a control part is arranged on the sand adding groove, and the control part is used for controlling the reciprocating movement of the moving unit at the top end of the sand adding groove. The present application combines mechanical structure and automatic control, realizes the uniform distribution of sand amount in space during the sand adding process, effectively solves the problems of non-uniform sand adding, easy blockage and low adjusting precision of the traditional device, and significantly improves the reliability and scientificity of the river model experiment.

The invention discloses full-flow automatic molding equipment for a moving bed river model, which comprises a left high-precision track and a right high-precision track which are parallel to each other and laid on a leveled model sand field, and the length direction of the left high-precision track and the length direction of the right high-precision track are the front-back direction. The left high-precision track and the right high-precision track are provided with movable bed terrain manufacturing equipment and a fine trimming forming device which can move in the front-back direction, the left-right direction and the vertical direction, and the movable bed terrain manufacturing equipment is located on the front side of the fine trimming forming device. The terrain making automation of the moving bed river model can be realized through the control system, the terrain making process can be effectively simplified, and the efficiency is improved; according to the three-dimensional digital elevation information, the elevation precision of terrain making is controlled through automatic equipment, high-precision making of the terrain can be achieved within the whole range of the model, and the precision of terrain making of the moving bed river model is effectively improved.

The application discloses a method and device for adding sand to movable bed material in a river model test, and relates to the technical field of river model test. The application comprises a base, a sliding seat, a supporting seat, a lead screw, a joint control mechanism, a belt, a scraper, a lifting control mechanism, a cooling mechanism, a power supply mechanism and the like. According to the application, the height of the belt can be adjusted as required, and the adhered silt on the belt after conveying can be scraped and cleaned automatically during the movable bed material sand adding experiment. In addition, the scraper for scraping and cleaning can be cooled by the cooling mechanism, so that the friction between the scraper and the belt is not too severe, and the service life of the scraper and the belt is prolonged.

The application provides a river flow field state determination method, device and equipment and a storage medium. A water dynamic control equation is used to sample river model parameters to generate a water dynamic response sample set covering different characteristic combinations. Abnormal samples in the sample set are filtered to obtain an effective data set. According to the statistical characteristics of the effective data set and the prior range of physical parameters, the static properties and dynamic states of the river are coded into a structured representation with fixed dimensions to construct a physical enhanced proxy model with the structured representation as input. The model is trained by using a joint optimization target containing a data fitting term and a water dynamic control equation physical constraint term. The spatial adaptation mechanism is used to convert the target river entity properties into a matching target structured representation, which is input into the trained model to perform flow field deduction and obtain a flow field state prediction result of the target river at a future time. The above method can improve the efficiency, accuracy and adaptability of flow field prediction.

The invention discloses a river model section auxiliary manufacturing device, which belongs to the field of environmental engineering, and comprises a first lifting bracket, a second lifting bracket, a river cross rod and a plurality of lifting rods, the first lifting support and the second lifting support are vertically arranged on the two sides of a target river channel respectively, the river cross rod stretches across the river channel and is horizontally arranged, and the two ends of the river cross rod are vertically and detachably connected with the first lifting support and the second lifting support respectively. A plurality of sleeves are fixedly arranged on the river cross rod in parallel, each sleeve is movably sleeved with a lifting rod, and each lifting rod is perpendicular to the river cross rod. According to the device, the multiple lifting rods make contact with the river channel through gravity, the river channel section morphology is recorded through a track formed by the ropes at the ends, the section point taking recording efficiency is greatly improved, and the recording precision of the river channel section morphology is effectively improved; in addition, the device can be repeatedly used, the problems of limitation and resource waste of traditional wood board cutting are solved, cost is low, and the device is suitable for application and popularization.