35 results about "River flood" patented technology

The invention relates to a mountain river flood dynamic rehearsal method, device and equipment based on big data fusion and a medium. The method comprises the following steps: acquiring a multi-source fusion data set of a target mountain river; based on the multi-source fusion data set, recognizing the flood type of the target mountain river in combination with a preset threshold rule to obtain the flood type and cause parameters; according to the flood type and the cause parameter, calculating a design flood peak flow value of each node in the target mountain river; according to each design flood peak flow value, performing section-by-section trial calculation through an energy equation to obtain a design flood surface line; and performing dynamic simulation processing on the flood routing process of the target mountain river based on the designed flood water surface line, and generating a flood routing dynamic simulation report of the target mountain river. The method can accurately adapt to the characteristics of diverse causes and complex propagation process of flood in a mountain river, and remarkably improves the refinement degree and reliability of flood rehearsal.

The invention discloses a river flood control influence analysis method based on a graph neural network, and the method comprises the following steps: S1, collecting terrain, hydrology, weather and water flow data, and constructing a graph structure model; s2, generating node and edge features, and forming a graph model; s3, inputting the graph model to a Laplacian network, and generating graph feature representation; s4, combining real-time data updating features, and constructing a dynamic graph model; s5, executing neighborhood sampling, and constructing a local subgraph; s6, inputting an attention mechanism, and generating an attention graph representation; s7, inputting a graph generation module, simulating a flood situation, and generating an expansion graph structure; and S8, training the dynamic graph model, and outputting a flood range, a risk level and flood control measures. According to the invention, graph modeling and reasoning integration of flood control analysis is realized.

The invention provides a hydrodynamic model-based mountain river flood diversion tunnel line and scale optimization design method, which comprises the following steps of: constructing a one-dimensional hydrodynamic mathematical model of a research area drainage basin by adopting MIKE11 software, and constructing a one-dimensional hydrodynamic model of the research area drainage basin according to the one-dimensional hydrodynamic mathematical model of the drainage basin, boundary conditions and calibrated comprehensive roughness; and calculating designed flood water surface lines of different frequencies of the urban section. According to the actual situation of a city, aiming at urban flood causes and main problems existing in a current flood control system, engineering measure schemes such as flood control reservoir construction, beach retreating and river returning, river regulation, embankment heightening and flood diversion channel building are proposed, and a flood diversion tunnel route and planning optimization research is developed on the basis of a hydrodynamic model. Numerical simulation of flood disasters is completed by means of the modern information technology, a complete disaster prevention and control system is established for achieving the purposes of scientization, high efficiency and automation of disaster prevention and relief decision, the urban flood prevention capacity can be comprehensively improved, and the life and property safety of the masses is guaranteed.

The application relates to a river flood discharge capacity dynamic evaluation and hydrological early warning method. The method comprises the following steps: based on a parameter sensitive observation subset, sequentially updating an initial hidden variable in a low-dimensional hidden space through an unscented particle filter algorithm to obtain an optimized hidden variable, and inputting the optimized hidden variable into a river dynamic resistance field generator based on an initial dynamic roughness field to perform decoding processing to obtain a dynamic roughness field of a current period; based on the dynamic roughness field and a state sensitive observation subset, performing analysis and update processing on a state variable field of a hydrodynamic model through a deterministic ensemble Kalman filter algorithm to obtain an assimilated water level field and a flow velocity field; according to the water level field, the flow velocity field and the dynamic roughness field, the maximum flood discharge capacity of a section is calculated in combination with dike top elevation data, and a flood discharge capacity dynamic index is calculated based on the maximum flood discharge capacity of the section and a current actual flow. The method can realize real-time dynamic quantification of river flood discharge capacity and predictive evaluation of flood risk.

The invention discloses a self-adjusting water gate structure based on a river flood season, which comprises a gate body, a gate plate capable of moving up and down is arranged in the gate body, the self-adjusting water gate structure further comprises a blocking assembly, a shifting assembly and a fishing assembly, the blocking assembly can move up and down along with the water surface, and part of the blocking assembly can float on the water surface; and the other part of the blocking assembly can be inserted into the water surface. During use, the gate body is installed in a water body, sundries such as branches can float on the water surface due to small buoyancy, the blocking assembly can block the sundries so as to prevent the sundries from penetrating through the gate body, and when the sundries are accumulated to a certain degree, the stirring assembly can stir the sundries so that the blocking assembly can rotate, and the sundries can be prevented from penetrating through the gate body. The blocking assembly is arranged on the water surface so that sundries floating on the water surface can be taken away from the water surface, then the fishing assembly can remove the sundries on the blocking assembly, and therefore the purpose of cleaning the sundries on the water surface is achieved, and after cleaning is completed, the blocking assembly is reset for use next time.

The present application relates to the technical field of river basin water environment management and water ecological evaluation, and particularly relates to a river flood season pollution impact evaluation method and system combining river basin spatial analysis and water ecological response. The method first collects water ecological data, pre-processes the water ecological data, calculates the water ecological metabolism background value before the non-flood season or the flood season pollution event based on the diurnal variation model of river dissolved oxygen concentration based on mass balance, calculates the theoretical lag time from rainfall to pollution peak value based on the correlation between the catchment area and the response time, and delimits the flood season pollution event window period. Based on the high-frequency monitoring data of the water ecology in the flood season pollution event window period, the water ecological metabolism response index is calculated, the disturbance intensity of the pollution event on the water ecological system metabolism function is evaluated, the non-point source pollution intensity index and the point source risk evaluation value are calculated, and the pollution source investigation suggestion is comprehensively generated. The present application effectively solves the problem of difficult definition of non-point source pollution responsibility in the flood season, and realizes the accurate identification of pollution sources.

The invention relates to a water level real-time monitoring mechanism for river flood control. The water level real-time monitoring mechanism comprises a vertically-arranged monitoring column, a display part vertically and fixedly installed at the top of the monitoring column and an indication assembly installed between the monitoring column and the display part. A plurality of display areas are sequentially arranged on the display part from top to bottom; the indicating assembly comprises a vertical track fixedly installed on the monitoring column, a connecting rod slidably installed in the track, a buoyancy piece fixedly installed at the bottom of the connecting rod, and an indicating piece fixedly installed at the top end of the connecting rod and used in cooperation with the display piece. The system has the advantages that full-process automation from water level monitoring, visual warning and graded triggering to equipment self-maintenance is achieved, and the real-time performance and reliability of river flood prevention monitoring are remarkably improved.

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.

A river flood prevention early warning system comprises a master control terminal and a monitoring terminal, the monitoring terminal comprises a vertical rod arranged on a reference plane, the vertical rod is connected with a radar water level gauge through a cross rod, and the radar water level gauge is located above a monitored liquid level; the vertical rod is a hollow rod, an alarm emitter and a storage battery are arranged at the position, higher than the datum plane, of an inner cavity of the vertical rod, the alarm emitter and the storage battery are not in contact, electric contact pieces are oppositely arranged on the adjacent sides of the alarm emitter and the storage battery, the position of the alarm emitter is fixed, and the storage battery is provided with a traction rope and is fixed to the hook through a water dissolving ribbon. And the storage battery can be electrically connected with the alarm transmitter after the water-soluble cable tie is broken. On the basis of existing flood prevention equipment, an alarm emitter and a storage battery which is used in cooperation with the alarm emitter and is fixed through a water dissolving ribbon are added, and after the water level reaches a certain height, after the water dissolving ribbon is dissolved, the storage battery can make contact with the alarm emitter, and then a water level early warning signal is sent out.

The invention relates to the technical field of river channel flood control, in particular to a river channel control flood control method.The flood control device comprises a base, fixing assemblies are symmetrically arranged on the base, and the fixing assemblies can fix the base to the ground; the protection plate is arranged on the base, a plurality of flow guide grooves are formed in the protection plate, a limiting assembly connected with the protection plate is arranged on the base, and the limiting assembly can limit the rotating angle of the protection plate; the supporting mechanisms are symmetrically arranged on the base and connected with the protection plate, and the supporting mechanisms can move when the protection plate is impacted; the strength adjusting mechanism is arranged on the base and connected with the supporting mechanism, and the supporting mechanism can drive the strength adjusting mechanism to move so as to adjust the supporting state of the supporting mechanism on the protection plate; and the flow guide assembly is arranged on the base and connected with the strength adjusting mechanism and the protection plate.

The invention provides a multi-disaster multi-mode flood flow intelligent monitoring and early warning method, system and device, and relates to the field of disaster early warning. Establishing a rainstorm-runoff coupling model for predicting the surface runoff yield, the confluence time and the runoff peak value based on the soil water content, the vegetation coverage and the surface slope data under different rainfall capacities; constructing a river channel confluence coupling model based on the flow velocity, the water level and the section form of river channel section monitoring for predicting river channel flood confluence time, confluence amount and on-way water level change; judging whether there is a riverway confluence risk according to the real-time predicted riverway flood confluence time, confluence amount and on-way water level change; when the riverway confluence risk exists, the flood inundation range, the water depth distribution and the evolution speed are predicted through a pre-trained flood evolution coupling model based on the surface runoff, the confluence time and the change speed of the runoff peak value in combination with the landform data. According to the invention, the accuracy, timeliness and reliability of disaster early warning can be improved.

This invention discloses a dynamic assessment device and method for river flood risk and unmanned precision dredging, relating to the field of water conservancy and river management technology. The device includes: an unmanned high-frequency mapping unit, an intelligent analysis and decision-making unit, an unmanned precision dredging unit, and an on-shore sludge treatment and disposal unit. Each unit is bidirectionally connected to the intelligent analysis and decision-making unit. The unmanned high-frequency mapping unit is a lightweight unmanned surface vessel (USV) equipped with a multibeam echo sounder and other equipment to collect terrain data and construct models. The intelligent analysis and decision-making unit is deployed on-shore or in the cloud, processing data and issuing dredging commands. The unmanned precision dredging unit is a dynamically positioned USV integrating variable depth suction and other mechanisms. The on-shore sludge treatment and disposal unit receives and processes dredged sludge through a sealed structure. This invention features a multi-architecture compatible hardware layout and a dual-threshold PID precision dredging process, achieving centimeter-level depth control and closed-loop sludge transport, protecting the original riverbed soil layer, reducing energy consumption and management investment, and stabilizing the river's flood discharge capacity.

The invention relates to the technical field of water conservancy informatization and flood prevention and disaster reduction, in particular to a river flood routing simulation and flood prevention emergency decision support system and method.The system comprises edge space-time reference nodes deployed at key flood prevention nodes and a central decision correction server, and the data acquisition module is used for acquiring state data such as sluice opening and personnel transfer and executing a control instruction, and the control instruction is used for aligning heterogeneous data through a high-precision timestamp, constructing a digital twinning situation under a unified space-time reference, dynamically correcting a hydrodynamic model boundary condition based on an instruction execution deviation, and triggering resimulation and emergency decision updating. The invention provides a river flood routing simulation and flood prevention emergency decision support system and a river flood routing simulation and flood prevention emergency decision support method, which solve or at least alleviate the problem that a simulation result is disjointed from reality due to the lack of closed-loop feedback and unified time reference in simulation deduction and physical execution in an existing system.

The invention discloses a flood routing simulation method, device and equipment in a dike burst scene and a medium. The method comprises the following steps: receiving breach definition data for a target breach input by a user on a front-end interactive interface through clicking; judging whether the target breach is completely located in an initial calculation range of a river flood routing model or not on the basis of the breach definition data and the preprocessed breakwater burst exchange data; if yes, directly utilizing a pre-constructed river flood routing model to carry out analog simulation calculation of flood routing; if not, reconstructing a river flood routing model, and performing analog simulation calculation of flood routing; and transmitting an analog simulation calculation result to a front-end interaction interface, and outputting and displaying a dynamic result of flood routing simulation in a dynamic rendering manner. According to the embodiment of the invention, by collecting the basic data of the drainage basin, interactively setting the dike burst parameters, adjusting the simulation area and visualizing the simulation result in real time, the response speed and decision support capability of drainage basin dike burst flood simulation are improved.

The invention relates to the technical field of river flood routing, in particular to a dynamic display method for a river flood routing grid model based on a three-dimensional scene. The method comprises the following steps: obtaining a section data set of a river channel, river channel hydrological boundary condition data and river network topological relation data; constructing a four-point implicit grid according to four nodes of two continuous moments of adjacent sections in the section data set, and performing weighted differential discretization on the Saint-Venant equation set on the four-point implicit grid to obtain a standard differential form; substituting a preset linear hypothesis relational expression into a preset standard differential form, and deducing to obtain a recursion formula of the sensitivity coefficient and the correction coefficient; and determining an initial coefficient according to the hydrological boundary condition data of the upstream river channel, and calculating the coefficient of each section on the four-point grid section by section by using the initial coefficient and a recursion formula. According to the method, accurate recursion of the water level and the flow of each section is realized through four-point implicit grid construction and Saint-Venant equation weighted difference discrete calculation.

The invention relates to a passive safety system that allows forced filling and water level control inside pressurised or near-pressurised compartments that may be dragged away during flash floods or river floods. The system quickly fills the compartment by force pumping exterior rain water. The increase in the level inside the compartment is controlled, eliminating buoyancy and even allowing an extra load to be applied to the floor if the interior level exceeds the exterior level. The integrity of the compartment is thus ensured while preventing possible collisions with third parties. The exterior water is conditioned to ensure that it enters the compartment clean, facilitating subsequent cleaning and drying.

The invention discloses a Muskinggen river flood forecasting method based on flood similarity analysis, and belongs to the technical field of hydrological forecasting. The method comprises the following steps: constructing a historical flood database; obtaining an upstream section forecast inflow process of the target flood and actual outflow at a downstream section forecast starting moment; selecting a multi-dimensional flood characteristic index, determining a weight by adopting a hybrid cross weighting method, calculating a comprehensive similarity between a target flood and each historical flood by utilizing an unequal weight distance coefficient method, and screening similar historical floods meeting conditions according to the comprehensive similarity; taking the minimum mean square error of the downstream observation and calculated flow of the historical flood as a target, dynamically calibrating the parameter flow calculation coefficients C, C and C of the Muskinggen model by adopting an improved particle swarm optimization algorithm, and further solving a storage capacity constant K and a flow proportion coefficient x; and finally, performing downstream flood process forecasting of the target flood by adopting the optimized parameters. According to the method, forecasting errors caused by fixed parameters of a traditional method are overcome, and the flood forecasting precision and reliability are remarkably improved.

This invention provides a real-time flood forecasting method for small and medium-sized rivers. The method includes preprocessing actual flow data and actual watershed rainfall data from flow measurement stations over past periods to obtain historical flow and rainfall sequences; determining a forecasting model matching the flow measurement stations based on their upstream deployment; when rainfall is expected in the future, invoking the forecasting model to read the historical flow, historical rainfall, and future rainfall forecast sequences, with the output being the flood flow forecast sequence for the flow measurement stations in the future period; and updating the historical flow, historical rainfall, and future rainfall forecast sequences input to the forecasting model based on a preset rolling period to continuously update the flood flow forecast sequence. This method improves the timeliness and operational adaptability of flood forecasts.

The invention discloses a Yellow River rainstorm flood intelligent early warning method and system, and relates to the technical field of hydrological early warning data processing, and the method comprises the steps: aligning Yellow River multi-source data to generate node time sequence features, and constructing a Yellow River network directed graph. Propagation reasoning is carried out on the Yellow River network directed graph according to flood discharge propagation time lag, and the model is trained through conservation constraint and propagation consistency constraint. Predicting the flood risk index of the Yellow River, performing graded early warning, and updating the time-delay parameters on line according to actual measurement feedback. According to the method, river network topology and flood discharge time lag alignment are taken as a main line, multi-source observation is unified and structured into a node time sequence matrix and a directed river network, conservation and propagation consistency constraints are introduced into space-time diagram reasoning, and a multi-step water level and peak time window for early warning is output; and through risk index grading and actual measurement feedback, time delay is corrected online, and prediction, early warning and calibration closed loop are realized.

The application discloses a river channel breach simulation method based on a two-dimensional coupling water power model, and specifically comprises the following steps: obtaining basic data of a calculation region, establishing a one-dimensional river network model and a two-dimensional surface water power model; coupling the one-dimensional river network model and the two-dimensional surface water power model to obtain a two-dimensional coupling water power model, solving the model, and calculating exchange flow; solving a model breach process, calculating a river channel breach flow process; coupling the breach flow into the model to calculate a breach flood evolution; updating section water depth, flow process, grid water depth and flow velocity in the model; outputting information; repeating until a preset simulation time length is reached, and completing simulation calculation. The method solves the problems of inaccurate calculation of a breach process caused by river flood and complex breach setting, is an effective method for calculating a river flood breach process, and has a clear process and simple operation.

The invention discloses a watershed river flood routing simulation method, which comprises the following steps: step 1, collecting and preprocessing watershed terrain, river section and meteorological data, processing terrain data by using a GIS technology, and fitting and constructing a river section function; step 2, selecting a Saint-Venant equation set, calibrating parameters such as roughness by using an optimization algorithm, and minimizing an error by taking historical flood data as a reference; 3, substituting the parameters, and discretizing the solving equation set by using a numerical solution method to obtain flood routing parameters; and 4, comparing simulation and actual measurement data, calculating errors and correlation coefficient verification results, and analyzing and drawing. Simulation precision can be improved, timeliness can be enhanced, the application range can be expanded, and a basis can be better provided for flood control decision making compared with the prior art.

The invention discloses a river flood routing simulation method based on an improved Muskinggen segmented continuous algorithm, and the method comprises the steps: segmenting a river, and dividing calculation unit segments according to the topographic features of the river; determining parameters, namely determining parameters K and x of a Muskingum method based on energy, momentum conservation and actually measured data; performing continuous calculation, performing flood routing calculation on each calculation unit section, and considering flow continuity and boundary conditions; coupling calculation: coupling results of each calculation unit section to obtain a river flood routing process, and reasonably adjusting data at a branch afflux position; and result correction: correcting a simulation result by using actually measured data, and adjusting parameters to minimize errors. Simulation precision can be improved, adaptability is enhanced, calculation efficiency is improved, and a reliable basis is provided for flood control and disaster reduction decisions.

The invention discloses a detachable and adjustable dual-purpose supporting system for river channel bridge incremental launching construction and a construction method. The system comprises a plurality of sets of incremental launching columns and a set of back-jacking columns which are arranged at intervals in the transverse direction and the longitudinal direction. The top of the pushing column and the top of the back-pushing column are each provided with an adjustable support, each support is composed of a fixed section and a telescopic section inserted into the fixed section, and accurate elevation adjustment is achieved by increasing or decreasing adjusting cushion blocks. A support at the top of the pushing column is used for supporting the pushing distribution beam and bearing the pushing beam to form a pushing platform; a support on the top of the jacking column is specially used for jacking operation of the bridge body after jacking is completed; the columns are connected through the horizontal connecting rods and the inclined struts to form a stable space frame. The standardized pipe sections connected through the flange plates are adopted, rapid assembly, disassembly and reutilization of the whole system are achieved, the problems that a traditional welding support is low in construction efficiency, poor in adaptability, single in function and large in influence on river channel flood discharge are effectively solved, and the method is particularly suitable for bridge construction in the flood season or in the river channel with limited navigation.

The invention discloses a continuous liquid level position detection device, which relates to the technical field of hydraulic engineering monitoring and comprises a mounting frame, a fixing plate, a buoy, a door-shaped frame, a pressure sensor, an extrusion assembly, a protective net barrel, a control box and a micro density sensor. The mounting frame is fixed on a river levee; a micro density sensor is arranged in the protective net barrel; a microcontroller, a wireless signal transmitting module, a battery module and a timing module are integrated in the control box. According to the device, interference is offset through initial zero clearing, the microcontroller synchronously collects the real-time density value of the micro density sensor, liquid discharge volume calculation is dynamically corrected, the liquid level height is obtained through immersion depth derivation, and the liquid level height is transmitted to a monitoring center in a timing mode through cooperation of the timing module. The device realizes continuous and accurate monitoring of the liquid level and dynamic compensation of density fluctuation errors, is stable in structure, convenient to install and high in anti-interference capability, provides reliable data support for flood control and drainage of urban watercourses and ecological scheduling, and is adaptive to various urban watercourse monitoring scenes.

This invention provides a method, apparatus, equipment, and medium for flood prediction in small and medium-sized watersheds. It relates to the field of digital twin water conservancy technology. The method includes: constructing a two-dimensional hydrodynamic model; simulating a two-dimensional grid time series of river flood evolution under different inflow conditions at characteristic cross-sections of a target small and medium-sized watershed based on the two-dimensional hydrodynamic model; constructing a neural network model including LSTM and Transformer modules; training the neural network model to obtain a flood prediction model for the small and medium-sized watershed; constructing a three-dimensional visualization model of the target small and medium-sized watershed; inputting real-time hydrological data into the trained flood prediction model to obtain real-time flood evolution data; mapping the real-time flood evolution data onto the three-dimensional visualization model; and driving the flood to dynamically evolve and render under the constraints of the logical boundaries, thereby achieving real-time prediction of the flood inundation process.

The utility model discloses a river management flood control device, which relates to a flood control device and comprises a lifting plate and an outer sleeve plate, the lifting plate is slidably connected with the outer sleeve plate, the bottom surface of the outer sleeve plate is fixedly connected with a height adjusting cavity, the height adjusting cavity is connected with a height adjusting component for adjusting the height of the lifting plate, and the bottom surface of the height adjusting cavity is fixedly connected with a hollow base. The hollow base is connected with a moving assembly used for conveniently moving the device. According to the device, through cooperation of the height adjusting assembly and the moving assembly, the functions of automatically adjusting the flood control height and rapidly moving according to water level changes are achieved, high practicability and reliability are achieved, and the flexibility and efficiency of river flood control can be effectively improved.

A river anti-flood wall comprises a plurality of adjacent vertical columns, tempered glass is arranged between the adjacent vertical columns, a lower bottom plate is arranged below the tempered glass, and a buffer rubber layer is arranged between the lower bottom plate and the tempered glass. The vertical column body comprises a bottom connecting plate and a fixed column body, an extension fixing part is fixedly arranged on the side part of the fixed column body, and fixing grooves which are solidified with the toughened glass are formed in the two sides of the extension fixing part. The vertical column bodies are adopted to form the foundation structure, then the tempered glass and the buffer rubber layer are arranged in the foundation structure, the interior of the foundation structure has good sealing performance, and when the water level of a river rises, the foundation structure has good protection performance; and the impact of floaters in the river on the toughened glass is reduced as much as possible.

This invention relates to the field of river flood early warning technology, solving the technical problem that existing technologies lack deep fusion of high-precision total water vapor information with high-resolution spatial information from radar, resulting in underestimation of rainfall and affecting the accuracy of flood warnings. Specifically, it relates to a flood early warning method for small and medium-sized rivers based on BeiDou and a rainfall radar. This method collects and preprocesses BeiDou GNSS observation data and radar data within the target watershed to obtain clean carrier phase data and radar reflectivity data. Based on the clean carrier phase data, it calculates the tropospheric zenith total delay and separates the zenith wet delay. This invention utilizes the strong penetrating power of BeiDou GNSS signals and their immunity to rainfall attenuation, solving the problem of underestimation of rainfall caused by severe radar signal attenuation under strong convective weather. It overcomes the shortcomings of traditional single-radar attenuation correction divergence under heavy rainfall, significantly improving measurement accuracy under extreme weather conditions.

The invention relates to a passive safety system that allows forced filling and water level control inside pressurised or near-pressurised compartments that may be dragged away during flash floods or river floods. The system quickly fills the compartment by force pumping exterior rain water. The increase in the level inside the compartment is controlled, eliminating buoyancy and even allowing an extra load to be applied to the floor if the interior level exceeds the exterior level. The integrity of the compartment is thus ensured while preventing possible collisions with third parties. The exterior water is conditioned to ensure that it enters the compartment clean, facilitating subsequent cleaning and drying.