55 results about "Tidal river" patented technology

The invention relates to a tidal reach tide level forecasting method and system based on a combined model. The method comprises the following steps: mining the average propagation time of upstream and downstream tide levels through a derivative dynamic time warping method; feature decomposition is conducted on the tide level multi-influence-factor data through set and empirical mode decomposition, and high-frequency component information and low-frequency component information are extracted; a combined model is constructed by combining a deep residual shrinkage network, a bidirectional long-short term memory network and an attention mechanism, and spatial-temporal features are mined. The tide level propagation time between upstream and downstream tide level stations is mined by using a derivative dynamic time warping method, and a more accurate time reference is provided for tide level forecasting; a set and empirical mode decomposition method is adopted to perform characteristic decomposition on tide level data, spatial characteristics and time characteristics are extracted through a combined model, and an attention mechanism is utilized to perform fusion, so that the mining and learning ability of the model on multi-scale nonlinear characteristics and non-stationary characteristics is improved, and the tide level forecasting precision is further improved. And the forecasting error in the storm surge period is reduced.

The invention discloses a multi-target intelligent hydraulic regulation and control method for a tidal river network sluice group. The method comprises the following steps: S1, acquiring historical detection data and hydrological data of a tidal river network; and S2, constructing a river network flow prediction model and a water level prediction model to obtain river network key section hydrodynamic data. And S3, based on a multi-objective optimization thought, nesting the flow prediction model and the water level prediction model into an improved optimization algorithm by using an objective function with hydrodynamic regulation as a core. S4, according to the multi-target requirements of river network flood control, water resources, water environment, water ecology and the like, the optimal gate opening degree is solved based on an optimization algorithm, and a real-time dynamic water gate group combined regulation and control scheme is generated. According to the multi-target intelligent hydraulic regulation and control method for the tidal river network sluice group, an optimal scheduling method and a machine learning technology are fused, a sluice group joint regulation and control scheme can be generated in real time, the river network water fluidity and the self-cleaning capacity are remarkably enhanced, and important support is provided for tidal river network water problem systematic treatment and intelligent management.

The invention discloses a tidal reach water level and flow relation analysis method based on tidal level harmonic analysis. The method comprises the steps of collecting actually measured water level data, basin river topography and digital elevation data of a tidal reach hydrologic station; characteristic parameters and water surface elevation change characteristics of all partial tides of the tide level of the tidal river reach are obtained on the basis of tide level harmonic analysis, and then independent tide flow and river runoff flow are obtained; establishing a tidal reach one-dimensional hydrodynamic model, and analyzing a flow change process and a water level flow change relation under different water level change scenes; and analyzing the contribution degree of the tidal flow and the river runoff to the actual flow and the change process by utilizing a multivariate regression analysis and drift diameter analysis method to obtain the change characteristics of the water level and flow relationship of the tidal reach. The method has the advantages that the water level and flow relation of the tidal reach can be rapidly analyzed, complex estuary hydrodynamic process simulation is not needed, and the method is also applicable when actually measured flow data is lacked.

The invention discloses a water supply risk assessment method, system and device for tidal estuary area salt tide invasion based on fresh water prevailing and storage, and a storage medium. The method comprises the following steps: acquiring day-by-day target site data and historical salt tide disaster simulation data of a research area in the same time sequence; training the historical salt tide disaster simulation model by using the target site data, and inputting the historical salt tide disaster simulation data into the trained historical salt tide disaster simulation model to obtain a long-sequence historical salinity simulation value; generalizing a water supply system of the research area, and constructing a water supply risk comprehensive evaluation index system based on fresh water grabbing and storage scheduling; based on the water supply risk comprehensive evaluation index system, calculating a comprehensive water supply risk index according to the long-sequence historical salinity simulation value; and performing frequency analysis on the comprehensive water supply risk index, and dividing a water supply risk degree and an early warning level based on a set water supply risk threshold. According to the method, the comprehensive water supply risk index is quantified based on fresh water preemptive storage scheduling, the salt tide risk degree and the early warning level are scientifically divided from the angles of the influence degree and the occurrence frequency of long-sequence historical salt tide disasters, and an effective decision basis is provided for water supply safety study and judgment of estuary coastal areas depending on tidal river reaches.

The invention discloses a plane and vertical combination-based Tesla valve tidal river network hydrodynamic reconstruction method, which comprises the following steps of: 1, designing a main seawater upstream channel in a tidal river network into a Tesla valve structural form on the form of a river plane; secondly, in the vertical direction of the river channel, a Tesla valve-like structure is adopted, and a directional flow guide structure is arranged at the position close to a riverbed, so that when the water flow flows towards the ocean, the flow line is smooth, and when the water flow traces upwards from the ocean to the river channel, the water flow resistance is increased; structures similar to Tesla valves are installed at the inflow and upstream positions between the ocean and the river channel, movable assemblies such as gates are not used, salty tide upstream is effectively inhibited, meanwhile, water connectivity is not blocked, the influence on fish migration and ecosystem connectivity is small, and the method is suitable for large-scale popularization and application. High-concentration salt-containing water at the bottom is more effectively blocked, and one-way flow of water and pollutant discharge in a riverway of a tidal river network area are promoted.

The invention provides a tidal reach water level prediction method, device, equipment and medium, and the prediction method comprises the following steps: collecting historical data and current time period data, the historical data and the current time period data comprising actually measured runoff data, actually measured water level data and actually measured tidal range data; lagging adjustment is conducted on the actually measured runoff data and the actually measured tidal range data with the actually measured water level data as the benchmark through a cross-correlation analysis method; performing EEMD decomposition to obtain respective intrinsic mode functions and residual errors; and outputting the eigenmode function of the water level data of the analysis station in the future time period and the predicted value of the residual error through the LSTM model, and carrying out superposition to obtain the predicted value of the water level of the tidal reach. According to the method, the water level data, the runoff data and the tidal range data of the tidal reach are subjected to conjoint analysis, the problems of nonlinear signal processing and low precision of the water level of the tidal reach are effectively solved through EEMD decomposition and the LSTM model, and the prediction accuracy of the water level of the tidal reach is greatly improved.

The present invention discloses a method, system, device and storage medium for evaluating the water supply risk under the saltwater intrusion in a tidal estuary area based on the fresh water storage and diversion scheduling. The method includes: obtaining the daily target site data and historical saltwater intrusion disaster simulation data in the same time series in the research area; training the historical saltwater intrusion disaster simulation model with the target site data, and inputting the historical saltwater intrusion disaster simulation data into the trained historical saltwater intrusion disaster simulation model to obtain the long-sequence historical salinity simulation values; generalizing the water supply system in the research area and constructing a comprehensive water supply risk evaluation index system based on the fresh water storage and diversion scheduling; calculating the comprehensive water supply risk index based on the long-sequence historical salinity simulation values according to the comprehensive water supply risk evaluation index system; performing frequency analysis on the comprehensive water supply risk index, and dividing the water supply risk level and early warning level based on the set water supply risk threshold. The present invention quantifies the comprehensive water supply risk index based on the fresh water storage and diversion scheduling, and scientifically divides the saltwater intrusion risk level and early warning level from the perspectives of the influence degree and occurrence frequency of the long-sequence historical saltwater intrusion disasters, providing an effective decision-making basis for the water supply safety judgment in the estuary and coastal areas relying on the tidal river section as the water source.

The application discloses a kind of multi-step flow prediction methods based on space-time dual attention long short-term memory network, belong to deep learning and water conservancy informatization technical field.The method includes: feature perception and data preprocessing, variable attention feature screening, LSTM time series dynamics coding, extract time series deep dependence and construct full-time domain dynamics memory bank;Dynamic retrieval and multi-dimensional feature fusion, introduce step condition embedding and time decay driven cross attention mechanism to realize on-demand retrieval of historical features, and fuse near-time physical evolution inertia to ensure trajectory continuity;Result mapping and trajectory output, generate multi-step flow prediction value in parallel.The application solves the problems of spatial driving weight static, phase lag, memory loss and trajectory discontinuity in tidal river network multi-step flow prediction, and improves the prediction accuracy and stability.

The present invention discloses a method for hydrodynamic reconstruction of a tidal river network based on a Tesla valve in a planar and vertical combination. The method comprises the following steps: first, in the planar form of the river channel, the main upstream seawater channel in the tidal river network is designed into a structural form of a Tesla valve; second, in the vertical direction of the river channel, a Tesla valve-like structure is also adopted, and a directional guide structure is set near the riverbed, so that the streamline is smooth when the water flows toward the ocean, and the water flow resistance is increased when the water flows upstream from the ocean to the river channel; the present invention achieves effective suppression of the upstream salt tide by installing a structure similar to a Tesla valve at the inflow and upstream between the ocean and the river channel without using movable components such as gates, while not cutting off the connectivity of the water body, having little impact on fish migration and the connectivity of the ecosystem, and more effectively blocking the high-concentration salt water body at the bottom, thereby promoting the unidirectional flow of water and the discharge of pollutants in the river channel of the tidal river network area.

This invention discloses a river flow monitoring system and method based on ultra-high frequency side-scan radar. The data acquisition module is deployed on the riverbank to acquire multi-channel raw echo data required for river hydrological parameter inversion. The river flow monitoring cloud platform processes, analyzes, displays, and stores the data acquired by the data acquisition module, and sends corresponding instructions to the data acquisition module. This solution uses a database to correlate and store hydrological data, meteorological data, cross-sectional geometric data, and comparative measurement data in a time series manner, providing a solid data foundation for in-depth data mining, model optimization, and trend prediction. Furthermore, the data analysis considers the impact of complex tidal dynamic modulation in tidal river sections on river flow calculation. A tidal phase correction term is introduced into the index velocity method model, effectively eliminating the systematic bias caused by tidal dynamic modulation in the calculation.

The application discloses a kind of tidal river network sluice operation data model processing method, system and terminal, it is related to sluice operation analysis technical field, and its technical scheme main points are: initial outer river tidal level is carried out noise reduction pretreatment, and sliding average is carried out;Select the smooth result of the highest matching degree of rising and falling tide trend, and carry out abnormal fluctuation elimination processing;The rising and falling tide trend in standard smooth result is analyzed;Rising and falling tide trend result and water level difference threshold are loaded in Infoworks RTC module;Different water level difference threshold is tried, and the optimal water level difference threshold of sluice opening and closing is determined, to obtain final Infoworks RTC module.The application is carried out to the smooth processing of outer river tidal level data, and the outer river tidal drop process is judged, according to the inner and outer river tidal difference to control the opening and closing of sluice, reach water quality model operation working condition and actual engineering working condition consistent, provide strong support for later water power water quality model rating.

The invention discloses a method for judging a backflow time period of a gate in a plain tidal river network. The method comprises the following steps: acquiring water gate upstream and downstream long-series observation water level, drainage basin rainfall and wind field data; astronomical tide and rainfall runoff decoupling is carried out on the downstream section water level, dynamic deformation characteristic parameters are extracted and corrected, and a downstream water level forecasting curve set is obtained; physically decomposing the observation water level of the upstream shallow lake, extracting the average water level and the wind-generated water level deviation, and calculating an upstream forecast curve set in combination with rainfall; combining the forecast curve set to construct a predicted water level difference sequence set; extracting a prediction error quantile based on a pre-constructed error condition distribution library, and performing lower bound calibration and minimum extraction on the difference sequence to obtain a partial safety fusion water level difference sequence; a backflow risk period is identified based on the fused sequence and a decision threshold. According to the method, time consumption of complex numerical solution is avoided, and timeliness and robustness of advanced early warning in the backflow risk time period are improved.

This invention relates to a collision avoidance decision-making method for vessels in tidal inland waterways, belonging to the field of vessel collision avoidance technology. The method includes: acquiring tidal information and vessel navigation information of the tidal inland waterway, wherein the vessel navigation information includes the navigation information of the vessel itself and a target vessel with a collision risk; determining the encounter situation between the vessel and the target vessel based on the vessel navigation information; determining the current direction of the vessel and the target vessel based on the encounter situation and the tidal information; determining the vessel's collision avoidance responsibility based on the encounter situation and the current direction; and making a collision avoidance decision for the vessel based on its collision avoidance responsibility. This invention considers the tidal problem in tidal inland waterways, divides the collision avoidance responsibility of vessels in different encounter situations, and thereby provides reasonable collision avoidance schemes, achieving effective collision avoidance decision-making tailored to the characteristics of tidal inland waterways.

The application discloses a kind of quantitative tidal river section pollutant flux analysis method, comprising the following steps: S1, the equation of concentration variation of pollutant is established;S2, the water flux equation of river section at the time period to be studied is established;S3, based on water flux equation and the equation of concentration variation of pollutant at the section, the pollutant flux equation of river section at the time period to be studied is established;According to the pollutant flux equation, the hourly flux of pollutant at the section at the time period to be studied is calculated.The application can calculate the hourly variation process of pollutant concentration which sufficiently reflects the concentration oscillation caused by reciprocating flow by inputting tidal level and limited concentration data into the equation of concentration variation of pollutant, and based on the hourly variation data of pollutant concentration, the pollutant flux at the section at a certain time period in the future can be calculated hourly according to the pollutant flux equation, and finally the total pollutant flux at the section per day can be counted, which provides scientific support for water safety decision-making of city managers.

The invention discloses an urban drainage and waterlogging prevention system treatment engineering system scheme library construction method, which comprises the following three main steps of: firstly, carrying out current situation and problem evaluation on an urban drainage and waterlogging prevention system, and drawing up an evaluation index system of the urban drainage and waterlogging prevention system containing 19 indexes; four types of typical cities including mountainous regions, hills, plain river networks and tidal river networks are selected for investigation, and problems are accurately evaluated; secondly, on the basis of landform and hydrological characteristics, an urban drainage and waterlogging prevention system treatment engineering system scheme library is constructed, and three drainage system treatment schemes of'source, small drainage and large drainage 'and a standard exceeding emergency scheme are provided for each type of cities; and finally, making a specific treatment scheme according to the processes of current situation evaluation, treatment standard determination, drainage partition optimization and the like. The drainage and waterlogging prevention capacities of different types of cities are effectively improved, losses caused by waterlogging are remarkably reduced, and safe operation of the cities and life and property safety of residents are guaranteed.

A device for stratified in-situ monitoring of the water quality and dissolved oxygen of sediments in a tidal river network region includes a floating platform. Three take-up and pay-off assemblies are fixedly connected to the edge of a top surface of the floating platform. The device can provide high-density data of stratified dissolved oxygen, all monitoring units perform sampling and monitoring directly at the positions where they are located, samples do not need to be transferred, sediments will not be disturbed, and monitoring is performed in the field environment, such that researchers can obtain the long-term diurnal change of stratified dissolved oxygen and the continuous change process of dissolved oxygen in one and even multiple hydrologic years, and basic data is provided for study of the dissolved oxygen change mechanism and accurate control of the water environment in tidal river network regions.

The invention discloses a flood prevention four-pre-system for a'embankment abutment 'of an urban section in a tidal river network area, and provides an analog simulation system for a river network of the urban section in the tidal river network area, and a data base plate is built on the basis of water conservancy facility data, geographic space data and vector data of the urban section in the tidal river network area. A tidal river network hydrodynamic water quality model and a one-dimensional hydrodynamic visual model are taken as the core, and early warning indexes of water (water level station), dike (dike), gate (flood control gate) and platform (hydrophilic platform) are provided for dike facilities. Meanwhile, on the basis of urban flood prevention water conservancy facilities and equipment, geographic space data and water and rain condition forecast data, the real simulation of the water level change process of the urban crossing river is realized by combining analog simulation and grid rendering visualization technologies; the flood prevention four-pre whole process of rolling forecast of global water regimen, targeted early warning of risk targets, vivid rehearsal of pump gate scheduling and dynamic plan emergency measures is achieved, and decision support is provided for planning, design and flood prevention consultation of water conservancy projects.

The invention discloses an ultra-shallow tidal river reach bottom friction coefficient confirmation system and method and related equipment, according to the scheme, through innovatively improving a Zeer-Manning formula and carrying out quantitative assignment on a Manning roughness coefficient according to different water depth intervals, accurate calculation and determination of the bottom friction coefficient are realized, and the accuracy of the bottom friction coefficient is improved. And the accuracy and applicability of the calculation result are improved.

The application discloses a kind of tidal river reach water level discharge relation analysis method based on tidal harmonic analysis, including collecting the measured water level data of research tidal river reach hydrological site, river basin river terrain and digital elevation data;Based on tidal harmonic analysis, the characteristic parameters of each tidal component of tidal river reach tidal level and the variation characteristics of water surface elevation are obtained, and then the independent tidal flow and river runoff flow are obtained;Establish one-dimensional hydrodynamic model of tidal river reach, analyze the flow variation process and water level discharge variation relation under different water level variation scenarios;The contribution degree of tidal flow and river runoff to actual flow size and variation process is analyzed using multiple regression analysis and path analysis method, and the variation characteristics of water level discharge relation of tidal river reach are obtained.The advantage is: the water level discharge relation of tidal river reach can be quickly analyzed, without complex estuary hydrodynamic process simulation, and it is also applicable when lacking measured flow data.

The application provides a tidal river reach water level prediction method, device, equipment and medium, wherein the prediction method comprises the following steps: collecting historical data and current period data, the historical data and the current period data both comprise measured runoff data, measured water level data and measured tidal range data; using cross-correlation analysis method to adjust the measured runoff data and the measured tidal range data with the measured water level data as the benchmark; performing EEMD decomposition to obtain respective intrinsic mode functions and residuals; outputting the prediction values of the intrinsic mode functions and the residuals of the water level data of the analysis station in the future period through the LSTM model and superimposing them to obtain the prediction value of the water level of the tidal river reach. The application carries out joint analysis on the water level data, runoff data and tidal range data of the tidal river reach, effectively solves the nonlinear signal processing problem and the low precision problem of the water level of the tidal river reach through EEMD decomposition and the LSTM model, and greatly improves the prediction accuracy of the water level of the tidal river reach.

The utility model discloses a deepwater composite cofferdam system suitable for a tidal river complex embankment area, which comprises a Larsen steel sheet pile cofferdam system, a cast-in-situ bored pile support system and a concrete steering block, and the Larsen steel sheet pile cofferdam system comprises U-shaped Larsen steel sheet piles and an inner support system; the cast-in-situ bored pile supporting system is arranged between the Larsen steel sheet pile cofferdam system and the flood control wall and is a pipe gallery composed of a plurality of soil retaining and supporting cast-in-situ bored piles. The end parts of two side arms of the U-shaped Larsen steel sheet pile are correspondingly sealed with the two ends of the cast-in-situ bored pile support system respectively; and the cast-in-situ bored pile supporting system is connected with the enclosing purlins into a whole through concrete steering blocks at the positions as high as the enclosing purlin supports. Therefore, the utility model can effectively prevent the surrounding soil body of the flood control wall from collapsing towards the quay wall in the main pier construction operation process, ensure the safety of the main pier construction operation, and improve the construction economy of the deepwater composite cofferdam system.

The invention provides a method for evaluating the risk of combined pollution of micro-plastics and sea salt in a tidal basin to an ecological environment by using myriophyllum spicatum, and the method comprises the following steps: simulating a tidal section water body which comprises polystyrene micro-plastics and a sea salt solution; the method comprises the following steps: selecting myriophyllum spicatum as a test plant, pretreating the myriophyllum spicatum, transplanting the myriophyllum spicatum into a water body of a tidal section, and carrying out composite stress culture; sampling after culture is finished, measuring physiological and biochemical indexes of the myriophyllum spicatum, and evaluating the risk of combined pollution to the aquatic ecosystem. The method is suitable for a tidal basin which is a special transition zone where fresh water intersects with the ocean, can accurately identify the degree of harm of micro-plastic and sea salt combined pollution to an aquatic ecosystem, and provides technical support for combined pollution ecological risk management and control.

The application discloses a tidal river tidal water intake threshold value determination method in the technical field of river regulation, carries out the collection and analysis of basic data such as hydrology, topography, water quality, pollutants and salinity of a river and an outer sea, determines a river control section and water quality improvement targets and salinity control targets, establishes a tidal river hydrodynamic water quality mathematical model, simulates and calculates hydrodynamic water quality results under different engineering regulation schemes, and counts tidal water intake Q, water quality concentration C and salinity P of the river control section under different regulation schemes. According to the tidal river tidal water intake threshold value determination method, the reasonable tidal water intake for improving the water environment of the tidal river by using tidal resources can be determined, key technical support for determining the tidal river engineering regulation task and scale is provided, and the problem that the increase of the tidal water intake causes the invasion of salt water and affects the safety of production and living water is avoided.

This invention provides a method and apparatus for recommending port entry and exit in tidal river sections based on ship fuel consumption. It only considers the impact of tidal currents on the actual speed of ships. Specifically, it quantitatively analyzes tidal currents through predicted tides and directly analyzes the actual speed of ships during navigation by combining the tides and the water flow speed they affect. It calculates and accumulates fuel consumption using existing and relatively accurate relationships between speed and fuel consumption to estimate the fuel consumption of the entire route. This allows for the recommendation of time windows for construction ships to enter and exit ports, selecting time windows with lower fuel consumption to optimize fuel consumption for construction ships in tidal river sections, thereby achieving the goals of energy conservation, emission reduction, and reduced navigation costs.

The application discloses a kind of tidal river network water gate group multi-objective intelligent water power regulation methods, steps are as follows: S1, obtains tidal river network historical detection data and hydrological data.S2, construct river network flow prediction model, water level prediction model, obtain river network key section hydrodynamic data.S3, based on multi-objective optimization idea, with water power regulation as the core target function, flow prediction model and water level prediction model are nested into improved optimization algorithm.S4, according to the multi-objective demand such as river network flood control, water resources, water environment and water ecology, based on optimization algorithm, the optimal gate opening is solved, and real-time dynamic water gate group joint regulation scheme is generated.The application combines optimization scheduling method and machine learning technology, proposes a tidal river network water gate group multi-objective intelligent water power regulation method, which can generate water gate group joint regulation scheme in real time, significantly enhance the flowability and self-purification capacity of river network water body, and provide important support for the systematic governance and intelligent management of tidal river network water problems.

The present application relates to the technical field of power system disaster prevention and reduction, and particularly relates to a power distribution facility risk management and control scheduling method and system based on urban flood forecasting. The method comprises the following steps: collecting multi-source static basic data of a target area, and constructing a flood risk ledger of power distribution facilities; integrating urban flood disaster-causing factors, coupling to form a flood forecasting mechanism model, and outputting a risk level; constructing a deep learning model, rolling forecasting short-term flood scenarios, and generating risk prediction results; obtaining Internet of Things monitoring data, identifying the water accumulation state of power distribution facilities, and forming facility monitoring results; using the risk prediction results and facility monitoring results to construct a risk list, and designing a scheduling scheme based on the risk list; mapping the scheduling scheme into scheduling instructions, and uploading to the management and control platform. The present application can effectively improve the disaster prevention and reduction level of power distribution facilities under extreme climate conditions, and provide technical support for the safe operation of power grids in typical tidal river network areas.

This invention provides a method, apparatus, and electronic equipment for analyzing water quality compliance in tidal river networks, relating to the field of water environment data processing technology. It divides the target area into multiple independent sub-regions based on hydrodynamic characteristics and topographic structure. Then, combining the pollution load structure entering the river, it determines the baseline pollution carrying capacity of each sub-region during the slack tide period. Furthermore, using tidal rhythm as the core, it quantifies the bidirectional mass flux between sub-regions under the tidal rhythm, and determines the effective environmental capacity value for each. This allows for precise capture of the dynamic impact of tidal reciprocating flow on pollutant migration and diffusion, achieving a refined characterization of the hydrological-hydrodynamic-water quality coupling process. Furthermore, it constructs an environmental capacity map, which can intuitively present the spatiotemporal dynamic distribution of capacity, completely breaking through the limitations of traditional static capacity calculation. Water quality compliance analysis based on the map can provide precise spatiotemporal implementation guidance for treatment projects, avoiding one-size-fits-all treatment and significantly improving the effectiveness of engineering applications.

The invention relates to the field of anti-seepage engineering, in particular to an anti-seepage structure based on a tidal river and a construction method.The anti-seepage structure can still keep the anti-seepage effect under the tidal dynamic stress condition, the anti-seepage structure comprises an anti-seepage geomembrane layer, and the anti-seepage structure comprises a geotechnical bag layer, a plastic clay layer and an ecological planting soil layer; the anti-seepage structure is sequentially provided with a soil bag layer, an anti-seepage geomembrane layer, a plastic clay layer and an ecological planting soil layer in a stacked mode from bottom to top. The anti-seepage structure is particularly suitable for anti-seepage structures near tidal rivers.

The invention relates to the technical field of disaster prevention and reduction of power systems, in particular to a power distribution facility risk management and control scheduling method and system based on urban flood forecast. The method comprises the following steps: collecting multi-source static basic data of a target area, and constructing a flood risk ledger of the power distribution facility; integrating the urban flood disaster-inducing factors, coupling to form a flood forecasting mechanism model, and outputting a risk level; constructing a deep learning model, performing rolling prediction on a short-time flood scene, and generating a risk prediction result; internet-of-things monitoring data are acquired, the power distribution facility ponding state is identified, and a facility monitoring result is formed; constructing a risk list by using the risk prediction result and the facility monitoring result, and designing a scheduling scheme based on the risk list; and mapping the scheduling scheme into a scheduling instruction, and uploading the scheduling instruction to a management and control platform. According to the invention, the disaster prevention and reduction level of power distribution facilities under extreme climate conditions can be effectively improved, and technical support is provided for safe operation of a power grid in a tidal river network typical area.

The invention relates to an ecological flow assessment method for fish tidal river network migration channel maintenance. The method comprises the following steps: constructing a one-dimensional tidal river network hydrodynamic model by using river network data; setting different incoming water flows and tidal condition scenes, inputting a one-dimensional tidal river network hydrodynamic model, and outputting the flow velocity of each river channel of the river network; obtaining a flow velocity suitability curve of the target fishes, and substituting the flow velocity of each river channel of the river network into the flow velocity suitability curve to obtain a suitable migration river channel; according to the river network water flow direction, the water system circulation between the suitable migration rivers is calculated; calculating the adjusted total length of the suitable migration river channel by taking the water system connectivity as a weight; and determining the fish migration ecological flow according to the adjusted mapping relation between the total length of the suitable migration river channel and the incoming water flow. The method solves the problem that in the prior art, only the longest total length of the river channel suitable for fish migration is considered for the ecological flow, the connectivity between the river channels is not considered, and the local optimum problem is caused, so that the fish migration requirement is difficult to meet.