50 results about "Main river" patented technology

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 discloses a cofferdam staging construction method which comprises the following steps: on the basis of the overall design of a cofferdam, adding a first-stage cofferdam design, and transversely dividing a river channel into a main river channel and a non-main river channel according to hydrological survey information; the first-stage cofferdam comprises an upstream cofferdam, a downstream cofferdam and a first-stage cofferdam overflowing riprap protector from a bank slope on one side of a non-main riverway to a main riverway joint part; the second-stage cofferdam is combined from a bank slope on one side of the main river channel to the first-stage cofferdam to form an integral Meanwhile, a first-stage cofferdam flood season flood season scheme is designed; according to the method, cofferdam filling construction is involved in advance before river closure, and cofferdam implementation is completed in two dry periods; construction of the cofferdam anti-seepage wall is involved in advance, the construction period of the cofferdam anti-seepage wall is prolonged, and equipment needed for construction of the cofferdam anti-seepage wall is greatly reduced; the cofferdam is filled by stages, so that the use efficiency of earthwork equipment is improved; the cofferdam is constructed by stages, so that the construction time of the cofferdam is prolonged, and the construction period of the cofferdam is better guaranteed; and through effective protection measures, the first-stage cofferdam flood safety is guaranteed.

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 a river water level inversion method taking altimeter footprint heterogeneity into consideration. The method comprises the following steps: acquiring an observation waveform of an SAR altimeter; space geometric parameters are calculated through footprint gridding and observation geometric modeling; constructing a water distribution scene based on the water mask and the river network, and classifying the water into a main river channel, a flood area and an adjacent isolated water body; electromagnetic scattering numerical integration is carried out based on the differentiated surface roughness parameters, and a simulated echo waveform is generated; waveform retracking and parameter inversion are realized through coarse grid search and local optimization solution; calculating an absolute water level and carrying out geophysical correction; performing multi-index quality control based on the interpretation rate of the analog waveform and the residual whitening degree; and finally outputting a water level product. According to the method, the defects of insufficient inversion precision and robustness of an existing method in a complex earth surface mixed scene are overcome, and the accuracy, reliability and physical interpretability of inland river water level monitoring are remarkably improved.

The invention provides a high-fidelity generalization method and system for plain river network water flow simulation, and relates to the technical field of model simulation. The method comprises the steps that a node river network is constructed, constructing a physical river network topological structure comprising a main river channel node, a river reach, a regulation and storage node and a virtual river reach; a dynamic parameter configuration step: configuring hydraulic parameters for the section in the physical river network topological structure; a boundary coupling step: distributing water catchment unit runoff obtained by calculation of the hydrological model to corresponding regulation and storage nodes as boundary input conditions; and a simulation execution step: performing hydrodynamic simulation calculation based on the constructed physical river network topological structure, the configured hydraulic parameters and the distributed boundary input conditions. Through a high-low water level dynamic parameter method, a hydrodynamic model parameter calibration method is optimized, especially for rivers with large water level fluctuation amplitude, and the accuracy of simulation results is ensured.

The present invention discloses a method and application for determining the hazard of a moraine lake outburst. The method calculates a moraine lake outburst susceptibility factor and its conversion value, a moraine lake outburst debris flow probability assessment factor and its conversion value, a moraine lake outburst probability factor for debris flow blocking the main river and its conversion value, and a moraine lake outburst probability factor for the main river's peak flow. Based on the conversion values, a comprehensive moraine lake outburst hazard assessment value is calculated and the moraine lake outburst hazard level is determined. This method addresses the characteristics of moraine lake outburst hazard and comprehensively considers multiple factors that influence the risk of a moraine lake outburst, including outburst floods, debris flows, blocking the main river, and floods caused by re-outburst. This improves the accuracy of the moraine lake outburst hazard assessment results and prioritizes the peak flow factor, which has the greatest impact on the hazard, making the hazard assessment results more reasonable and reliable.

The present application relates to river filtering technical field, especially a kind of rotating filter screen with electric control translation mechanism, including the top beam of being installed in the upper end opening of river and the bottom limit frame of being fixed in river bottom, top beam lower end is fixedly equipped with the upper translation guide rail.The rotating filter screen with electric control translation mechanism of the present application can be switched according to the scene needs by adopting double-section structure design, so that its applicable scene greatly improves;By using electric control translation and overturning adjustment mode, the angle and position of rotating filter screen can be controlled, and the operation is more convenient;By using the design of top beam and bottom limit frame, the impact resistance of the entire rotating filter screen can be enhanced, and the structure is more stable;Rotating filter screen can be quickly attached on both sides of river by splitting, not only can switch filtering mode, but also can change the barrier inside main river, facilitate internal ecology, improve different application scenarios.

The application discloses a surveying-based binary structure small watershed division method and system, and particularly relates to the field of watershed division. Basic data processing of the application includes collecting and preprocessing topography, remote sensing and other data, establishing a basic database, converting vector contour line data into DEM and filling in depressions, generating a non-depression DEM, determining water flow direction by using a D8 algorithm, calculating cumulative flow, and generating a river network. The river channel is converted into a vector runoff network, the sub-watershed range is extracted and mapped, the outcrop point of underground river or karst spring is taken as a corrosion reference, the watershed outlet is determined in combination with the main river channel of a large river, and a complete correlation system is constructed. Finally, the development of the underground water system pipeline is determined through hydrogeological investigation, geophysical prospecting, drilling and pumping test, the results of comprehensive investigation, geophysical prospecting, drilling and pumping test are comprehensively considered to accurately correct the boundary of the underground water system, and the underground water system distribution map conforming to the actual conditions is formed in combination with remote sensing images and administrative division maps.

The invention discloses a binary structure small watershed division method and system based on surveying and mapping, and particularly relates to the field of watershed division. Basic data processing comprises the steps of collecting and preprocessing data such as terrain and remote sensing, establishing a basic database, converting vector contour line data into DEM and filling depression, generating a non-depression DEM, and then determining the water flow direction by adopting a D8 algorithm; calculating accumulated flow to generate a river network; converting a river channel into a vector runoff network, extracting a sub-basin range and drawing, determining a basin outlet by taking an underground river dew point or a karst spring as a dissolution reference and combining a main river channel of a large river, and constructing a complete association system; and finally, through hydrogeological survey, geophysical prospecting, drilling and water pumping tests, underground water system pipeline development conditions are determined, comprehensive survey, geophysical prospecting, drilling and water pumping test results are obtained, an underground water drainage basin boundary is accurately corrected, and an underground water drainage basin distribution diagram meeting actual conditions is formed by combining remote sensing images and an administrative map.

The invention discloses a water pollution big data monitoring and early warning method and system, and relates to the technical field of water pollution monitoring, and the method comprises the steps: transversely arranging a plurality of flow velocity measurement points on a main river and branch flow convergence section, obtaining the flow velocity data of each flow velocity measurement point, and constructing a transverse flow velocity profile according to the flow velocity data; determining a shearing area according to the flow velocity difference value and the flow velocity change rate between the adjacent flow velocity measuring points, and determining the central position of a mixing zone; controlling a water quality sampling probe mounted on a transverse guide structure to transversely move along the section according to the central position of the mixing zone, so that the water quality sampling probe is positioned at the central position of the mixing zone; and acquiring real-time water level data, and calculating the target sampling depth according to the real-time water level data. A transverse flow velocity profile is constructed on a main river and branch flow convergence section, and the central positions of a shearing area and a mixing zone are determined based on a flow velocity difference value and a flow velocity change rate, so that a water quality sampling probe can be dynamically positioned in a key area of a hydrodynamic structure.

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.

The invention discloses a floodplain biological habitat system which comprises a floodplain, a plurality of biological habitat ponds are arranged on the floodplain, the biological habitat ponds are connected in series through side channels to form a biological habitat pond ecological link, and the water inlet end of the biological habitat pond ecological link is communicated with the water outlet end of a water inlet channel through the side channels. The water inlet end of the water inlet channel is communicated with the main riverway, the water outlet end of the biological inhabitation pond link is communicated with the water inlet end of the water outlet channel through the side channel, the water outlet end of the water outlet channel is communicated with the main riverway, an ecological frame belt is arranged between the main riverway and the floodplain, and the water inlet channel and the water outlet channel both penetrate through the ecological frame belt; the invention further discloses a construction method of the flood plain biological habitat system. According to the method, the original floodplain landform is fully reserved and utilized, diversified biological habitat environments are set, meanwhile, the technology has small influence on the surrounding environment, the engineering investment is low, river landscapes can be enriched, and the method has good application prospects.

The utility model discloses a broken river treatment structure which comprises a river channel body, an ecological platform is arranged corresponding to the broken end of the river channel body, the horizontal height of the ecological platform is higher than that of the water surface of the river channel body, an ecological water tank is arranged on the ecological platform, and water flowing out of the ecological water tank can enter the river channel body. A fluid conveying part is connected between the river main body and the ecological water tank, and a plurality of biological reaction components are distributed on the ecological water tank. The system has the following advantages and effects that the system can effectively activate the water system in the whole area, and the dispatching capability of the water resource in the area is improved, so that the water quality of the river channel is improved.

The present invention discloses a method for macroscopically identifying river-blocking disaster events based on the width of the river valley and the slope change of the main river, which relates to the technical field of identifying river-blocking landslides and debris flows, including: S1, obtaining high-precision DEM elevation data; S2, calculating the cross-section fitting average values ​​of the central section, upstream section and downstream section in the direction perpendicular to the main river; S3, calculating the main river gradient of the central section, upstream section and downstream section in the direction parallel to the main river; S4, determining the possibility of the identified slope / channel having a river-blocking disaster event in history, and the possibility of a river-blocking disaster event occurring in the future, based on the results of S2 and S3. This method can not only macroscopically identify whether a river-blocking disaster event has occurred in the area to be identified in history, and whether a river-blocking disaster event will occur in the future, but also provide a verification basis for the results of numerical simulation, and provide a target area for on-site investigation and sampling measurement, thereby improving the accuracy of identifying river-blocking disaster events.

The invention relates to a reservoir desilting and desilting method beneficial to long-term maintenance of flood control reservoir capacity. The reservoir desilting and desilting method comprises the following steps: collecting river topography, reservoir area water and sediment, reservoir dispatching modes and reservoir siltation data after reservoir storage and application; finding out a main river reach where the flood control storage capacity is silted; in a main river reach where the flood control reservoir capacity is subjected to silt loss, a main time period when the river reach is subjected to scouring is found from actual measurement data; a typical water and sediment process is selected from the main washing time period; establishing a reservoir one-dimensional non-constant running water and sediment mathematical model with a desilting and desilting simulation function; the built mathematical model is adopted, after the silt in the flood control reservoir capacity is calculated and added into the selected typical water and sediment through desilting measures, the desilted silt in the flood control reservoir capacity is conveyed into the dead reservoir capacity on the lower stream or partially conveyed out of the reservoir through reservoir optimization dispatching and by means of the sediment carrying capacity of water flow. The problem of how to couple reservoir desilting and reservoir dispatching and desilting to guarantee long-term use of the flood control reservoir can be solved.

The invention provides a mountain torrent susceptibility evaluation method based on flood source division and multi-model fusion. Comprising the following steps: S1, data preparation: collecting DEM data, NDVI data, land utilization data, soil type data, drainage basin division data, main river channel length data, roughness data, stable infiltration rate data, river channel average width data and mountain torrent disaster point vector data of a research area; according to the mountain torrent susceptibility evaluation method based on flood source division and multi-model fusion provided by the invention, regional division is constructed according to a mountain torrent formation mechanism, flood is divided into river overflow flood and slope confluence flood, multi-source factors are extracted for causes, propagation characteristics and influence ranges of different types of flood to realize differentiated expression, and the evaluation accuracy of mountain torrent susceptibility is improved. The assessment is more suitable for the actual disaster formation mechanism, and the pertinence and accuracy of the assessment are improved.

The invention provides a smart city river and lake water system pumped storage coordinated black and odorous water body treatment system and method. The system comprises a pumped storage power station side and a smart city equipment side; the pumped storage power station side at least comprises an energy storage upper reservoir, a circulation lower reservoir, a water treatment room, a river reservoir gate, a water pump and a water turbine; the smart city equipment side comprises remote sensing equipment, a water quality monitor and a smart city domain valve, and the water treatment room pumps water of the main river channel at the water catchment end into the upper energy storage reservoir and the lower circulation reservoir through a water pump; the upper energy storage reservoir is used for storing water, and the water turbine enters water for power generation; the circulation lower reservoir is used for flushing the river branch by using stored water when the river reservoir gate is opened; and the remote sensing equipment is used for monitoring remote sensing inversion data of different riverway tributaries. Cooperative operation of pumped storage and black and odorous water body treatment is achieved, the ecological environment of the river and lake water system is effectively improved, the urban water resource utilization efficiency and the water environment quality are improved, and powerful support is provided for sustainable development of a smart city.

The present application relates to ship lock filling and draining technology field, concretely is the water-proof structure of draining, ship lock draining system and its double-line ship lock draining mode, wherein the water-proof structure of draining, the structure includes: the water-proof wall of built ship lock side and the water-proof wall of extension ship lock side, the water-proof wall of built ship lock side and the water-proof wall of extension ship lock side are parallelly arranged and the height is same, the space is left between two walls, forms the draining channel, the draining channel is connected with the extension ship lock draining corridor, makes the half water body in the lock chamber pass through the extension ship lock draining corridor and enters the draining channel, and is discharged into the main river; the ship lock draining system and double-line ship lock draining mode of application water-proof structure of draining, the construction of this technology does not need to cross the built ship lock approach channel, does not affect the operation of ship lock, and does not need to set up the underground box culvert, and the construction is simple.

The present application relates to the technical field of hydrological simulation, and more particularly to a rainfall-runoff-concentration-evolution whole-process dynamic simulation system and method. The method comprises the following steps: obtaining basin topographic information and extracting basin boundaries; dividing grid cells according to the basin boundaries and setting river nodes using the grid cells; collecting rainfall data using a rain measurement radar; calculating runoff using the rainfall data; inputting the runoff into a pre-trained distributed concentration model for concentration analysis and recording the concentration flow; inputting the concentration flow and the river nodes into a river flood evolution model to perform river evolution simulation and generate river concentration data; determining the amount of water entering the main river according to the river concentration data; generating a flow time series according to the amount of water entering the main river; and predicting the flood peak flow based on the flow time series. The present application realizes accurate simulation of the hydrological process of a basin based on hydrological simulation technology, and improves the accuracy and timeliness of flood prediction and early warning.

The present invention provides a method for calculating the sediment transport ratio of a debris flow, including: collecting basic data and calculating the total volume of a debris flow; during the movement phase of the flow zone, classifying the debris flow into two categories: dilute and viscous, and dividing the viscous debris flow into its head and body, calculating the movement speed of each component to determine the flow rate of debris into the main river; during the confluence phase, establishing a sediment transport continuity equation based on the volume of the debris flow into the main river minus the volume of bedload transported by the main river equals the volume of the debris flow accumulation body, and iteratively calculating the relationship between the maximum length of the accumulation body and the time of debris flow confluence; during the scouring phase, using the maximum length of the accumulation body at the time when the debris flow stops confluence and the shear stress of the main riverbed as initial values, iteratively calculating the shear stress of the main riverbed at different times and the volume of the debris flow accumulation body at the time when scouring stops; and calculating the sediment transport ratio of the debris flow based on this volume and the total volume of the debris flow. This method has strong physical generalization.

The invention relates to the technical field of water conservancy projects, in particular to a river pattern discrimination method based on river plane geometric morphology indexes. The method comprises the steps of crude extraction of a river water body, calculation of a river plane geometric index, identification of a main flow path of a river, and judgment and output of a river type. The traditional plane form index is popularized and applied to river pattern discrimination. The invention provides a river pattern discrimination method based on a river plane geometric morphology index, which solves or at least alleviates the problems of low efficiency and the like caused by insufficient discrimination ability, non-uniform definition and strong dependence on manual interpretation of the existing single index, improves the precision and automation level of complex river pattern discrimination, and reduces subjective errors and cost.

The invention provides an avionics hub multi-water-source joint scheduling control system. The avionics hub multi-water-source joint scheduling control system comprises a data acquisition module, a communication transmission module, a data analysis module, a scheduling decision module, an execution control module, a man-machine interaction module and an emergency response module. Sensors are arranged at key positions of a main river channel, branches and a reservoir, real-time collection of water level, flow, water quality and meteorological information is achieved, and incoming water prediction and multi-target optimization scheduling are carried out based on an artificial intelligence algorithm. The scheduling strategy is continuously optimized through a closed-loop feedback mechanism, and the water resource utilization efficiency and the hub operation safety are improved. The system solves the problems that an existing dispatching system is serious in information island, low in automation degree and lagged in emergency response, has the advantages of being reasonable in structure, high in expansibility and high in intelligent level, and is suitable for comprehensive dispatching management of avionics hubs under the complex water source condition.

The invention discloses a river pollution source rapid detection method and system, and belongs to the technical field of water quality detection. The monitoring station is set up at the junction of each branch river channel and the main river channel of the to-be-detected river, the first water quality concentration sequence is collected, and the abnormal time and the abnormal monitoring station are obtained according to the first water quality concentration sequence, so that the sensitivity and the real-time performance of river pollution source detection are improved, and the pollution abnormity of the river is fed back in time. A water surface monitor and an underwater monitor of the abnormity monitoring station are used for collecting a water surface moving video, a water bottom moving video, a second water quality concentration sequence, a third water quality concentration sequence and a fourth water quality concentration sequence. The obstacle is monitored through the water surface mobile video and the water bottom mobile video, whether the obstacle is a pollution source or not is judged through the third water quality concentration sequence and the fourth water quality concentration sequence, the position of the pollution source is obtained, the initial pollution time is obtained according to the water body pollution source diffusion function, and rapid and accurate river pollution source detection is achieved.

The application discloses a kind of dilute debris flow and rainwater collaborative drainage channel and application thereof, import section, steep slope energy dissipation section and outlet section are all full-lining trapezoidal cross-section channel;The bottom width of inlet horn mouth gradually narrows along the flow direction of debris flow, the sidewall depth gradually increases along the flow direction of debris flow;Steep slope energy dissipation section is connected after import standard trapezoidal section, the bottom width is consistent with the bottom width of import standard trapezoidal section;The bottom of steep slope energy dissipation section is arranged energy dissipation ladder along the flow direction;Outlet section is divided into outlet standard trapezoidal section and outlet horn mouth arranged after, the bottom width of outlet horn mouth gradually narrows along the flow direction, the sidewall depth gradually decreases along the flow direction;The bottom width of wide end of inlet horn mouth, the bottom width of outlet standard trapezoidal section and the bottom width of steep slope energy dissipation section are consistent;Outlet horn mouth end meets main river channel with acute angle;Main river bed is provided with riprap bottom protection and the end of outlet horn mouth is connected.

The invention discloses a multi-channel and multi-reach Manning coefficient collaborative calibration method for a hydrodynamic model based on an orthogonal test, and the method comprises the steps: field investigation and survey, data collection and data quality analysis, construction of the hydrodynamic model, setting of boundary conditions and initial conditions, and division of test factors, namely different reach of a main channel. Test level-main channel and beach land Manning coefficient evaluation, multi-factor multi-level orthogonal table construction, successive combination test river water level simulation, NSE calculation, orthogonal table statistical analysis, and parameter robustness and reliability verification. According to the method, the problems of blindness, randomness and low efficiency of parameter adjustment of a traditional method and over-fitting, slow convergence and the like of an intelligent algorithm are avoided, the collaboration, high efficiency, accuracy, reliability and robustness of model parameter calibration are improved, a foundation is laid for effective simulation of the model in regional flood control and drainage scheduling, and the method is suitable for popularization and application. Meanwhile, support is provided for scientific decision-making of regional flood control and drainage scheduling, and remarkable economic benefits and social benefits are achieved.

The utility model discloses a flood prevention intercepting box convenient to connect, which relates to the technical field of intercepting boxes and comprises two mounting bottom plates and a flood prevention intercepting box splicing device. The flood prevention closure box splicing device comprises four bolts, four mounting side plates, a circular ring frame and a connecting ring, two first clamping grooves are formed in the surfaces of the two mounting bottom plates, the four bolts are mounted in the two mounting bottom plates correspondingly, second clamping grooves are formed in the surfaces of the four mounting side plates correspondingly, and the circular ring frame is mounted in the second clamping grooves. The surfaces of the four installation side plates are each provided with two splicing sliding grooves, the four installation side plates are all installed on the surfaces of the two installation bottom plates, and the surfaces of the four installation side plates are each provided with two bolt notches. The flood control closure box has a flood discharge function, so that the flood discharge pressure of a main river channel is reduced, and the flood discharge and drainage standard of the whole river channel is improved.

The invention relates to the technical field of water environment treatment, in particular to a riverway water pollution treatment method which comprises the following steps: arranging a diversion device in a suitable section of a main riverway, and introducing part of polluted river water into parallel ecological treatment branch canals; the drainage water sequentially flows through a precipitation siltation promotion area, a multi-stage compound ecological reaction area and a deep purification area in the branch canal to be subjected to stepped purification, wherein the multi-stage compound ecological reaction area is formed by connecting at least two stages of stepped units with built-in biological stuffing and aquatic plants in series; finally, the purified water flows back to the main river channel, and the diversion flow and the aeration intensity are adjusted according to water quality data feedback. According to the invention, low-disturbance, high-efficiency and ecological treatment of polluted river water is realized through technical integration of diversion burden reduction, multi-stage cooperation, ecological enhancement and intelligent regulation and control, and the system has the advantages of good treatment effect, low operation cost, strong ecological landscape compatibility and adaptability to different pollution loads.

This invention relates to the field of dynamic simulation of river flow modulus, and discloses a method for dynamic simulation of flow modulus in mountainous rivers. First, it acquires data on hydrological and meteorological elements, topographic river networks, soil properties, land cover, and glacier characteristics. Based on this data, it divides the river into sub-basins and contour zones, constructs a watershed hydrological model, and calculates the flow of each sub-basin along the main river channel. Based on satellite remote sensing data and the distribution location of the sub-basins along the main river channel, it calculates the average gradient of the sub-basins. Based on the flow and average gradient of each sub-basin along the main river channel, it calculates the flow modulus of all sub-basins along the river channel in the hydrological model under different seasons using the flow modulus calculation formula. This invention solves the problem in existing technologies where it is impossible to conduct on-site measurements of flow and gradient in mountainous rivers, thus making it impossible to draw dynamic flow modulus data for mountainous rivers.

The invention provides a braided river delta training image generation method and device, and the method comprises the steps: S1, constructing a river channel center line of an underwater diversion river channel of a braided river delta; s2, constructing a riverway bifurcation based on the riverway midline; s3, depicting a main river channel and a secondary river channel based on the river channel bifurcation; and S4, writing the main river channel and the secondary river channel into a three-dimensional grid, and outputting a three-dimensional grid model image of the braided river delta with a preset scale according to a preset river channel phase proportion. The invention aims to solve the problem of high difficulty in acquiring a braid river delta training image, and how to more truly represent spatial structure characteristics of a split river channel under a petal river delta training image.

The invention provides a river data processing method, device, equipment and product in a virtual scene, and belongs to the technical field of computers. Acquiring a trunk river and a branch river in the virtual scene, and determining initial heights of a plurality of trunk nodes in the trunk river and a plurality of branch nodes in the branch river; determining a first flow direction of the main river according to an initial height of a preset node in the main river, and adjusting the initial height of each main node according to the first flow direction to determine first height information of the main river; determining a second flow direction of the branch river according to the association relationship between the branch river and the main river and / or between the branch river and the ocean area, and adjusting the initial height of each branch node according to the second flow direction to determine second height information of the branch river; and generating target river data according to the first flow direction and the first height information of the main river and the second flow direction and the second height information of the branch river. According to the invention, reasonable and realistic river data can be generated.