23 results about "Tidal river" patented technology

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.

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 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 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 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 utility model discloses a simple artificial fish habitat system suitable for a tidal river channel, which is characterized in that a pit is arranged on a riverbed of the tidal river channel as a main body, and a water inlet and a water outlet of the pit are respectively provided with a stepped retaining dam; compacting the bottoms of the pits, laying clay on the bottoms and side walls of the pits, and arranging natural stones on the surfaces of the clay; a water area corresponding to the bottom of the pit is a deep water area for planting submerged plants; the water area corresponding to the side wall of the pit is a shallow water area, and shallow water plants are planted; the cement block stone wall of the stepped retaining dam is vertically inserted into a riverbed to be fixed and is higher than the riverbed; the natural stones are arranged at the top end and on the two sides of the cement block stone wall, and the gravel is arranged between the natural stones. The device can effectively capture and store water during water recession, and ensures that aquatic organisms have enough inhabiting space during tidal variation.

The application discloses a kind of lateral water intake rectifying device for tidal river section, the rectifying device is arranged in the lateral water intake position of river channel, the rectifying device includes: flow guide wall, the flow guide wall is arranged at water intake in vertical direction;Rotary mechanism, the rotary mechanism is installed in the bottom of flow guide wall, so that flow guide wall can rotate around axis line;Control system, the control system is connected with rotary mechanism, for controlling rotary mechanism, adjust the rotation angle and direction of flow guide wall, the present application improves the existing lateral water intake rectifying device, so that it can adjust the best water direction in situ according to the different direction of water flow, so as to realize the all-weather stable lateral water intake under tidal river section, by adopting this movable rectifying device, can effectively according to the water flow change of tidal river section, and provide more stable and uniform water intake condition.This has important significance for water resources management and river governance, help to improve water intake efficiency and the protection of water intake structure.

Use: The utility model relates to the field of energy, in particular to renewable energy sources, and can find application in the combined use of solar energy and the water inflows of small rivers. Objective: To amplify the DC power generated by photovoltaic converters and simplify the generator design, with photovoltaic converters being installed near tidal rivers where the energy of the water flow can be used as primary mechanical energy for amplification. The essence of the utility model: A device for hydraulic amplification of direct current power generated by photoelectric converters, supplied to the excitation winding of a direct current generator of a transverse current field, i.e., an amplifier, receives primary mechanical energy from the kinetic energy of the water flow.

The present application relates to the field of ecological revetment in the field of hydraulic engineering, and particularly relates to a riprapping ecological revetment system suitable for water level drawdown. The system comprises an ecological soil base layer, a filter layer, a riprapping revetment, a simulated wood pile scour protection belt and a planting groove; the ecological soil base layer has a compaction degree of greater than or equal to 93%, providing a dense support; the filter layer ensures smooth seepage and prevents soil loss; the riprapping revetment is formed by stacking large-diameter block stones according to gradation, forming a rigid skeleton resistant to scour; the planting groove is fixed in the riprapping structure, providing space for vegetation and anchoring the surface riprapping. The present application forms a closed-loop protection system through the cooperation of the five, effectively solving the problems of traditional riprapping revetment, such as easy scouring and instability during water level drawdown, and high maintenance cost, and has the advantages of scour resistance, ecology and universality, and is suitable for water level rapid rise and fall scenes such as regulating and storing lakes, reservoir drawdown zones, tidal river shorelines and the like.

The present application relates to the technical field of tidal river flow determination, and particularly relates to a tidal river flow determination method and device. Initial flow corresponding to each to-be-measured point in a target section of a tidal river is obtained. Water temperature data, salinity data and depth data corresponding to each to-be-measured point are obtained. The initial flow corresponding to each to-be-measured point is corrected based on the water temperature data, the salinity data and the depth data, so as to obtain target flow corresponding to each to-be-measured point in the target section. Through point-by-point correction, it is ensured that the flow data of each to-be-measured point in the target section is adapted to the local environment where the to-be-measured point is located, and the finally summarized total flow of the section can more truly reflect the hydrodynamic characteristics of the tidal river, thereby providing high-precision data support for flood control scheduling, water resource management and the like.

The invention relates to the technical field of engineering simulation, and discloses a tidal river reach lake and reservoir global hydraulic retention time spatial distribution calculation method and device, and the method comprises the steps: employing a weir flow formula and a scheduling operation scheme, combining an out-of-sluice tide level curve and a lake and reservoir capacity curve, and carrying out the adjustment and calculation to obtain the hourly flow of a water diversion sluice and a drainage sluice; the method comprises the following steps: dividing a lake and reservoir into a plurality of grid units by utilizing topographic data of a to-be-researched tidal river reach lake and reservoir, and constructing a lake and reservoir three-dimensional numerical model by taking hourly flow of a drainage sluice and a water diversion sluice as calculation boundaries; a tracking substance is arranged at the water diversion gate, and the tracking substance concentration of each grid unit of each time step is obtained in a model simulation mode; then, the hydraulic retention time of each grid unit is obtained through the judgment conditions and a hydraulic retention time calculation formula; isolines are constructed for the same hydraulic retention time of different grid units, hydraulic retention time space distribution of the whole domain of the lake and the reservoir is determined, and the purpose of accurately obtaining the key area of water retention in the lake and the reservoir is achieved.

The present application relates to the technical field of river basin management, and discloses a sewage system management and scheduling method for river basin management, comprising the following steps: predicting tides and dividing tide phase intervals; calculating tide phase-dependent pollutant capacity; predicting rainfall and calculating pollutant flux; calculating tide phase-dependent emptying rate; predicting volume occupation and judging the sufficiency of drainage volume; optimizing time sequence coupling volume division; generating scheduling instructions; correcting real-time data and updating scheduling. The present application solves the problem that the tidal river basin cannot effectively balance water quality protection and waterlogging prevention in the regulation and storage pool, and realizes the collaborative optimization of dual-function volume division and discharge scheduling of the regulation and storage pool.

The application discloses a propeller photoelectric current speed meter for tidal flow measurement, which comprises a speed meter controller, a measuring rod and a propeller head connected in sequence, and the propeller head is matched with a slidable and rotatable propeller through a probe; the speed meter can quickly judge the flow speed of tidal river mouth and the forward and reverse flow directions; the flow speed is judged by the rotating speed of the propeller; the forward and reverse directions of tidal flow are judged by the cooperation of the propeller at different positions of the propeller shaft and the probe, or the direction of tidal flow is judged by the color of light waves reflected by the reflective coating of the propeller; the propeller is divided into three sections, one end of which is provided with a first reflective coating, the other end is provided with a second reflective coating, and the middle section is not provided with a reflective coating; when the probe is located at one end of the first reflective coating, it indicates that the tide is in the forward direction; and when the probe is located at one end of the second reflective coating, it indicates that the tide is in the reverse direction; the speed meter has the advantages of simple structure, convenient operation, high measurement precision and high data reliability.

The invention provides a tidal river network water quality standard analysis method and device and electronic equipment, and relates to the technical field of water environment data processing, a target area is divided into a plurality of independent sub-areas according to hydrodynamic characteristics and a topographic structure, and then the reference assimilative capacity of each sub-area in a flat tide period is determined by combining an in-river pollution load structure; furthermore, the tidal rhythm is taken as a core, the bidirectional material flux between the sub-regions under the tidal rhythm is quantified, the respective effective environment capacity value is determined on the basis, the dynamic influence of the tidal reciprocating flow on the migration and diffusion of pollutants can be accurately captured, and the refined description of the hydrology-hydrodynamic force-water quality coupling process is realized. An environment capacity map is further constructed, space-time dynamic distribution of capacity can be visually presented, and the limitation of traditional static capacity calculation is thoroughly broken through. The water quality standard-reaching analysis based on the map can provide time-space accurate implementation guidance for the treatment project, avoids one-step treatment, and significantly improves the engineering application effect.

This application discloses a method and medium for calculating the flow rate of an online ADCP (Advanced Dynamic Capacity Response) system in tidal river sections, relating to hydrological monitoring: acquiring raw PDO (Positive Discharge Occurrence) message data from the online ADCP system and pre-configuring correction parameters for error correction and result screening; parsing the raw PDO message data to obtain the analytical data required for calculating the flow velocity; calculating the corresponding cross-sectional flow velocity according to the online ADCP monitoring mode based on the correction parameters and analytical data; the monitoring modes include VADCP (Variable Active Calibration) mode and HADCP (High-Intensity Active Calibration) mode; calibrating the calculated cross-sectional flow velocity using a preset function model to obtain the calibrated cross-sectional flow velocity correction value; using the calibrated cross-sectional flow velocity correction value as the cross-sectional average flow velocity, and combining it with the cross-sectional flow area corresponding to the real-time water level to calculate the cross-sectional flow rate. Addressing the difficulty in balancing different monitoring modes and insufficient accuracy in calculating flow velocity, direction, and flow rate in online ADCP flow rate calculations for tidal river sections, this application improves the accuracy of online calculations.

This embodiment discloses a method for classifying and zoning estuarine nutrient benchmark water bodies based on ecological response differences, relating to the field of environmental protection and comprehensive resource utilization technology. By using the multi-year average salinity of the surface layer of the target area for water body classification and zoning, the topography of the target area, and the tidal river interface of the target area, the river-estuary boundary, the estuary side boundaries, and the estuary-nearshore boundary within the target area are determined, thus defining the estuarine region within the target area. Then, estuarine unit zoning indicators are used to determine the boundaries of estuarine zoning units within the estuarine region. By using the probability value of a significance test within the estuarine zoning units, if the selected estuarine unit zoning indicators are determined to be ecologically relevant, the final estuarine zoning units within the estuarine region are determined, completing the water body classification and zoning of the target area. The zoning elements and division standards of this invention conform to the nutrient benchmarks characteristic of my country's marine ecological environment.