Flood prevention four-pre-treatment system for water embankment gate abutment of urban section in tidal river network area

Abstract

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.

Description

Technical Field

[0001] The invention relates to the technical field of flood prevention and four-prevention of water conservancy projects, and is particularly suitable for a flood prevention and four-prevention system of a "water dike gate platform" in an urban section of a tidal river network area. Background Art

[0002] Urban river sections in tidal river network areas usually take into account multiple functions such as flood discharge, water supply, shipping, and landscape. The environment is complex and there are many factors to consider in flood control. The corresponding flood control projects in urban river sections in tidal river network areas also have different functions such as flood control, drainage, docks, and hydrophilic platforms. This determines that in the four flood prevention measures for urban river sections in tidal river network areas, it is necessary to fully integrate the functional elements of various flood control projects, realize flood simulation and flood control dispatch under different scenarios and complex conditions, and provide accurate support for decision-making consultations.

[0003] However, the current four-pronged flood prevention and control in rivers mainly rely on traditional monitoring, analysis and decision-making methods, collect data through water level sensors, rain gauges and other equipment, and then use hydrological models and meteorological models for forecasting and analysis to provide basic data for subsequent links. Based on the forecast results and risk thresholds, early warning information is issued through broadcasts, text messages, etc., and emergency response measures are guided. The rehearsal uses traditional water conservancy models to simulate typical scenarios, and optimizes the scheduling plan through forward rehearsal and reverse deduction. Therefore, the current four-pronged flood prevention and control in rivers lack real-time dynamic interaction, and the rehearsal results are usually presented in the form of charts or reports. Although they can achieve basic functions, their efficiency and accuracy are relatively low, and it is difficult to meet the real-time and intelligent requirements of modern smart water conservancy. Summary of the invention

[0004] The purpose of the present invention is to provide a flood prevention four-prevention system for the "water dike gate" in the urban section of the tidal river network area, which is used to solve the problems that the current river flood prevention four-prevention lacks real-time dynamic interaction, has relatively low efficiency and accuracy, and cannot adapt to the complex environment of the river in the urban section of the tidal river network area.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The flood prevention four-prevention system of the "water dike gate tower" in the urban section of the tidal river network area described in the present invention includes a simulation unit, a business data comprehensive monitoring unit, a "water dike gate tower" forecast unit, an early warning unit, a rehearsal unit and a plan unit; The simulation unit is used to simulate the water level change process of the river network section in the urban area and perform visual display based on the digital twin technology; The business data integrated monitoring unit is used to collect data on rainwater conditions, defense deployment diagrams, pump gates, flood control materials, emergency rescue teams, evacuation points, and flood control pump trucks at the “water dike gate” in the urban section of the tidal river network in real time; The "water dike gate platform" forecasting unit drives the simulation unit to perform rolling calculations on the water regime forecasting of the river network cross-sections in the urban area according to the rainwater boundary conditions in the urban area; The "water dike gate platform" warning unit generates a warning list for water, dikes, gates, and platforms according to the water regime forecast, in combination with hydraulic characteristics, cross-section water levels, and warning indicators; The "water dike gate platform" preview unit dynamically adjusts the pump and sluice scheduling method in the simulation unit, and through forward preview and reverse deduction, simulates the change process of the water level of the river network cross-sections in the urban area to obtain the flood control scheduling plan for the river network in the urban area; The "water dike gate platform" plan unit, based on the plan knowledge base and the preview results of the preview unit, through spatial analysis, integrates the actual and forecast rainwater conditions to generate emergency plans for each water, dike, gate, and platform.

[0006] Further, the steps for building the simulation unit include, S1.1, collecting and processing the basic information, geographical spatial data, and vector data of the water conservancy facilities in the urban area of the tidal river network area; S1.2, building a model and simulation algorithm for the water conservancy facilities in the urban area of the tidal river network area, including geometric modeling of the water conservancy facilities in the urban area of the tidal river network area; mechanism modeling for simulating the hydrodynamics of the tidal river network; and visualization modeling for visual display; S1.3, establishing warning indicators for the water conservancy facilities in the urban area of the tidal river network area.

[0007] Further, the water conservancy facilities include hydrological stations, dikes, flood control gates, and hydrophilic platforms; the geographical spatial data includes underwater topography, land topography, and image data. The vector data mainly includes the points of water conservancy facilities, facility elevations, and facility orientations.

[0008] Further, the mechanism modeling uses a one-dimensional hydrodynamic method to construct a tidal river network hydrodynamic and water quality model; the visualization modeling is based on visualization rendering technology to establish a one-dimensional hydrodynamic visualization model for the output results of the mechanism modeling.

[0009] Further, the warning indicators include the warning values of hydrological stations, the designed high water levels and crest elevations of dikes, the bottom sill elevations of flood control gates, and the elevations of hydrophilic platforms.

[0010] Further, the "water dike gate platform" forecasting unit includes, S2.1, obtaining the upstream inflow boundary, downstream tide level boundary, and the actual and forecast rainfall data of each water conservancy area in the urban area; S2.2, calling the tidal river network hydrodynamic and water quality model in the simulation unit to obtain the forecast water regime of the river network cross-sections in the urban area; S2.3. According to the flood situation forecast of the river network section in the urban area and the default scheduling rules of pump gates, call the simulation unit to calculate and analyze the forecast data of each moment and each section of the urban river network.

[0011] Further, the "water, levee, gate, platform" early warning unit includes S2.2. Through QGIS software, associate the data of the main stream section of the urban inland river network, flood control gates, water level stations, levees, and hydrophilic platforms in the tidal river network area to generate the river center line data based on the high-precision section of the city-wide river network. S2.3. Compare the forecast data of each moment and each section of the urban river network with the early warning indicators of water, levee, gate, and platform to generate an early warning list of water, levee, gate, and platform; the early warning list includes the early warning time, early warning water level, early warning water level station number, flood control gate number, levee number, and hydrophilic platform number.

[0012] Further, the "water, levee, gate, platform" rehearsal unit includes, according to different rehearsal plans, calling the simulation unit to rehearse the water level change process of the urban river network at each moment, and based on the rehearsal results, draw a water level polyline graph of the longitudinal section of the urban river network, and determine the optimal scheduling plan after comprehensive comparison.

[0013] Further, the "water, levee, gate, platform" plan unit includes S3.1. According to the distance relationship, determine the flood control materials, emergency rescue teams, evacuation points, and flood control pump trucks near water, levees, gates, and platforms. S3.2. Determine the flood control early warning levels of water, levees, gates, and platforms according to the rehearsal results. S3.3. Combine the emergency response plan knowledge base to recommend emergency response plans, and integrate flood control materials, emergency rescue teams, evacuation points, flood control pump trucks, actual and forecast rainfall and flood situations to automatically form emergency response plans for each water, levee, gate, and platform.

[0014] The advantages of the present invention are that it proposes a simulation system for the river network in the urban area of the tidal river network area, builds a data floor based on the water conservancy facility data, geographical spatial data, and vector data in the urban area of the tidal river network area, takes the tidal river network hydrodynamic water quality model and one-dimensional hydrodynamic visualization model as the core, and proposes early warning indicators for water (water level stations), levees (levees), gates (flood control gates), and platforms (hydrophilic platforms) for levee facilities. At the same time, based on the urban flood control water conservancy facilities and equipment, geographical spatial data, and rainfall and flood situation forecast data, the present invention combines simulation and grid rendering visualization technologies to realize the real simulation of the water level change process of the river passing through the city, and realizes the full process of flood prevention "Four Pres": rolling forecast of the whole region's flood situation, targeted early warning of risk targets, realistic rehearsal of pump gate scheduling, and dynamic plan for emergency rescue measures, providing decision-making support for the planning, design, and flood control consultation of water conservancy projects. Brief Description of the Drawings

[0015] Figure 1 It is a framework flow chart of the flood prevention four-prevention system of the "water dike gate platform" in the urban section of the tidal river network area of ​​the present invention. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, the flood prevention four-prevention system of the "water dike gate" in the urban section of the tidal river network area described in the present invention includes a simulation unit, a business data comprehensive monitoring unit, a "water dike gate" forecast unit, an early warning unit, a rehearsal unit and a plan unit.

[0018] The simulation unit is used to simulate the water level change process of the river network section in the urban area, and visualize it based on the digital twin technology. The four-pre-flood simulation unit for urban sections in tidal river network areas is built based on the digital twin technology. The specific steps are as follows: (1) Collect relevant data and perform preprocessing. The collected data includes basic information, geospatial data and vector data of water conservancy facilities in urban areas of tidal river network areas. Water conservancy facilities include hydrological stations, levees, flood control gates and hydrophilic platforms. Geospatial data includes underwater topography, land topography, image data, etc. Vector data mainly includes water conservancy facility locations, facility elevations, facility directions, etc. The above information is used to construct the digital twin tidal river network urban area river network data base and simulation scene based on unified coordinates.

[0019] (2) Build a model and simulation algorithm for urban water conservancy facilities in tidal river network areas. Specifically, it includes geometric modeling of urban water conservancy facilities in tidal river network areas; Geometric modeling for simulating the hydrodynamics of tidal river networks; and visualization modeling for visualizing reality.

[0020] Geometric modeling is to establish BIM geometric models of hydrological stations, dikes, flood control gates, and hydrophilic platforms. Hydrological stations include water level stations or hydrological stations on both sides of the river network in urban areas. Dikes are dikes or flood control walls on both sides of rivers in tidal river network areas. Flood control gates are movable water retaining structures on dikes. Different types of flood control gates need to be modeled separately according to their actual types. Hydrophilic platforms are hydrophilic structures that extend from dikes to the water surface.

[0021] Mechanism modeling is to use one-dimensional hydrodynamic methods to construct a hydrodynamic and water quality model of tidal river network.

[0022] The visualization model is a one-dimensional hydrodynamic visualization model built based on visualization rendering technology for the output results of the tidal river network hydrodynamic and water quality model constructed in mechanism modeling.

[0023] (3) Establish warning indicators. That is, according to the water conservancy facilities in the urban areas of the tidal river network area, respective warning indicators are constructed, including the warning values of hydrological stations, the designed high water levels and crest elevations of dikes, the bottom sill elevations of flood control gates, and the elevations of hydrophilic platforms. According to the simulation results of the flood control "Four Preventions" simulation and simulation unit in the urban section of the tidal river network area, combined with the warning indicators, warning statistical analysis can be carried out.

[0024] Build a comprehensive monitoring system for business data to obtain business data such as water levels, rainfall, pump gates, flood control materials, emergency rescue teams, evacuation points, and flood control pump trucks in real time. The business data also includes the defense layout maps of urban areas.

[0025] Establish a "water-dike-gate-platform" forecasting system for the urban section of the tidal river network area, that is: obtain the upstream inflow boundary, downstream tidal level boundary of the urban area, as well as the actual rainfall data and forecast rainfall data within each water conservancy area, and real-time water regime data, call the flood control "Four Preventions" simulation and simulation unit of the urban section of the tidal river network area, and based on the tidal river network hydrodynamic and water quality model, roll-calculate the high-precision cross-section water regime forecast of the urban area river network. The specific steps are as follows: (1) Obtain the water and rainfall boundary conditions, that is, the upstream inflow boundary, downstream tidal level boundary of the urban area, as well as the actual and forecast rainfall data of each water conservancy area.

[0026] (2) Call the tidal river network hydrodynamic and water quality model in the simulation and simulation unit of the urban section of the tidal river network area according to the water and rainfall boundary conditions to obtain the high-precision cross-section forecast water regime of the urban area river network.

[0027] (3) Based on the high-precision cross-section forecast water regime results of the urban area river network and the default scheduling rules of pump gates, use the tidal river network hydrodynamic and water quality model in the simulation and simulation unit of the urban section of the tidal river network area to calculate and analyze, output the hourly forecast flow regime information of the main stream cross-section of the urban area river network in the tidal river network area within the next 48 hours, obtain the forecast data of each moment and each cross-section of the urban area river network in the tidal river network area within 48 hours, mainly including data such as water level, flow rate, and flow velocity, and then perform hourly visualization rendering in the digital twin scenario through the one-dimensional hydrodynamic model of the tidal river network in the simulation and simulation unit of the urban section of the tidal river network area for visualization display.

[0028] Establish an early warning system for "water, levee, gate, and platform" in important urban sections of tidal river networks. Analyze the flood control early warning situation of each important water body (hydrological stations and water level stations), levee (dikes and flood control walls), gate (flood control gates), and platform (riverside platforms) within the urban section based on the characteristic indicators of water projects. Conduct a targeted analysis of water level early warning according to the forecast data and early warning indicators at each moment and cross-section of the urban river network, and generate early warning lists for water, levees, and gates. The specific steps are as follows: (1) Use QGIS software to associate the data of the main river network cross-sections, flood control gates, water level stations, dikes, and riverside platforms within the urban area of the tidal river network, generate river centerline data based on the high-precision cross-sections of the city-wide river network, with the data format being json. The data association only needs to be processed once for the data, which can effectively reduce the time required for analysis and early warning and improve the analysis efficiency. The specific association rules are as follows: 1) According to the coordinates of the water level stations, extend the perpendicular lines of the water level station coordinates to the river centerline composed of the points of the high-precision cross-sections of the river network, and associate the water level stations with the nearest cross-section points of the river. Attach the name and four-color early warning values of the water level stations to the json data of the river centerline.

[0029] 2) According to the vector data of the flood control gates, screen out the river centerline points closest to the flood control gates through the coordinates of the flood control gates, and attach the numbers, bottom sill elevations, and gate top elevations of the flood control gates to the json data of the river centerline for both the left and right banks.

[0030] 3) According to the vector data of the flood control walls, screen out the river centerline points closest to the midpoints of the flood control walls through the plane coordinates of each section of the flood control walls, and attach the numbers, designed high water levels, and wall top elevations of the flood control walls to the json data of the river centerline for both the left and right banks.

[0031] 4) According to the vector data of the riverside platforms, screen out the river centerline points closest to each characteristic point of the riverside platforms through the plane coordinates of the riverside platforms, and attach the numbers and lowest elevations of the riverside platforms to the json data of the river centerline for both the left and right banks.

[0032] (2) Conduct a targeted analysis of water level early warning based on the forecast data at each moment and cross-section of the urban river network in the tidal river network area within 48 hours and the early warning indicators of water, levees, gates, and platforms, and generate early warning lists for water, levees, gates, and platforms. Specifically, by comparing the data of each main river network cross-section in the urban area of the tidal river network at each moment with the json data of the river centerline, sequentially compare the differences between the forecast data at that moment and the early warning values of the corresponding water level stations, the bottom sill heights of the flood control gates, the designed high water levels of the dikes, or the lowest elevations of the riverside platforms according to the serial numbers. When the forecast data exceeds the corresponding warning value, output the corresponding warning water level, the numbers of the warning water level stations, flood control gates, dikes, and riverside platforms according to the warning moment.

[0033] At the same time, by comparing the forecast data of each river section at each time, the highest river water level predicted for the main stream of the urban river network in the tidal river network area can also be obtained.

[0034] Establish a "water levee gate platform" rehearsal system for important urban sections in tidal river network areas, that is, dynamically adjust the urban area pump and gate dispatching mode, simulate the water level change process of the urban river network through forward rehearsal and reverse deduction, and build a digital twin simulation scene of the urban river network by combining simulation and mesh rendering visualization technology, and conduct visual dynamic rehearsal of water, levee, gate, and platform flooding risks, so as to realize virtual simulation of flood conditions and optimization of dispatching schemes. The specific steps are as follows: (1) According to the rehearsal plan, the one-dimensional hydrodynamic visualization model in the four-preparation simulation unit of the urban section of the tidal river network area is called to rehearse the changes in water levels at different times in the urban river network of the tidal river network area. The direction of water flow is described by arrows, and the water surface height describes the water level. In addition, real water materials and cloud map materials can be set to achieve a realistic three-dimensional simulation effect.

[0035] (2) Based on the preview results, a water level line graph of the longitudinal section of the urban river network in the tidal river network area is drawn, with the x-axis representing the distance from the starting point of the upstream levee and the y-axis representing the elevation value, including the water level line, river bottom elevation line, water level station warning value, left and right bank levee design high water level line, flood control gate bottom plate elevation, and hydrophilic platform elevation value. The combination of two-dimensional and three-dimensional methods can more intuitively display the changes in the water level of the mainstream of the urban river network in the tidal river network area.

[0036] (3) Specify different rehearsal plans, such as adjusting the dispatching rules of the pump gate, including the opening time and the number of opening holes, and re-perform the plan to obtain new rehearsal results, so as to provide data reference for the subsequent comprehensive comparison of multiple plans and determine the optimal dispatching plan.

[0037] Establish a "water dyke, gate and station" emergency plan system for important urban sections in tidal river network areas, that is: based on the water, dyke, gate and station warning list in the plan knowledge base, use spatial analysis to quickly obtain the flood control materials, rescue teams, evacuation points, flood control pump trucks and other nearby emergency resources available for each water, dyke, gate and station in the water, dyke, gate and station warning list, and integrate the actual and predicted rainfall conditions, municipal and district emergency plan knowledge and other information to automatically form emergency plans for each water, dyke, gate and station, and continue to save this emergency plan in the knowledge base to improve and optimize the flood control plan system. The specific steps are as follows: (1) Based on the water, dike, gate and station warning list, combined with the distance relationship between the layers of flood control materials, rescue teams, evacuation points, flood control pump trucks and the water, dike, gate and station warning points, the flood control materials, rescue teams, evacuation points, flood control pump trucks and detailed information near each water, dike, gate and station warning point are analyzed to provide support for flood control and rescue.

[0038] (2)Based on the simulation results of the water level change process of the urban river network obtained according to the determined simulation plan, determine the flood control warning levels of each warning point of water, dike, gate, and platform in the water, dike, gate, and platform warning list, recommend emergency response plans in combination with the emergency plan knowledge base, recommend the situation of each warning point and materials, personnel, and equipment to the plan, and automatically form emergency plans for each water, dike, gate, and platform by integrating real-time and forecast rainfall and water conditions, municipal and district-level emergency plan knowledge and other information. Continue to save this emergency plan into the knowledge base to improve and optimize the flood control plan system.

Claims

1. A flood control "water dike, gate and platform" four-prevention system for urban sections in tidal river networks, characterized in that, It includes a simulation unit, a business data comprehensive monitoring unit, a "water dike gate platform" forecasting unit, an early warning unit, a rehearsal unit, and a plan unit; The simulation unit is used to simulate the water level change process of the river network section in the urban area and perform visual display based on digital twin technology; The business data comprehensive monitoring unit is used to collect in real time the rainwater working conditions, deployment maps, pump gates, flood control materials, emergency rescue teams, evacuation points, and flood control pump truck data of the "water dike gate platform" in the urban section of the tidal river network area; The "water dike gate platform" forecasting unit drives the simulation unit to calculate the water situation forecast of the river network section in the urban area according to the rainwater boundary conditions in the urban area; The "water dike gate platform" early warning unit generates an early warning list of water, dike, gate, and platform according to the water situation forecast, combined with hydraulic characteristics, section water level, and early warning indicators; The "water dike gate platform" rehearsal unit dynamically adjusts the pump gate scheduling method in the simulation unit, and through forward rehearsal and reverse deduction, simulates the water level change process of the river network section in the urban area to obtain the flood control scheduling plan for the river network in the urban area; The "water dike gate platform" plan unit, based on the plan knowledge base and the rehearsal results of the rehearsal unit, through spatial analysis, integrates the actual and forecast rainwater conditions to generate emergency plans for each water, dike, gate, and platform.

2. The flood prevention four-prevention system for the "water dike gate platform" in the urban section of the tidal river network area according to claim 1, wherein: The steps for building the simulation unit include, S1.1, collecting and processing the basic information, geographical spatial data, and vector data of water conservancy facilities in the urban area of the tidal river network area; S1.2, building a model and simulation algorithm for water conservancy facilities in the urban area of the tidal river network area, including geometric modeling of water conservancy facilities in the urban area of the tidal river network area; mechanism modeling of simulating the hydrodynamics of the tidal river network; and visual modeling of visual display; S1.3, establishing early warning indicators for water conservancy facilities in the urban area of the tidal river network area.

3. The flood control four-prevention system for the "water dike gate platform" in the urban section of the tidal river network area according to claim 2, wherein: The water conservancy facilities include hydrological stations, dikes, flood control gates, and hydrophilic platforms; the geographical spatial data includes underwater topography, land topography, and image data; The vector data mainly includes the points of water conservancy facilities, facility elevations, and facility orientations.

4. The flood prevention "Four Preventions" system for the "Water Dike and Gate Platform" in the urban section of the tidal river network area according to claim 2, characterized in that: The mechanism modeling uses a one-dimensional hydrodynamic method to construct a tidal river network hydrodynamic and water quality model; the visual modeling is based on visual rendering technology to establish a one-dimensional hydrodynamic visual model of the output results of the mechanism modeling.

5. The flood prevention four-prevention system for the "water dike and gate platform" in the urban section of the tidal river network area according to claim 2, characterized in that: The early warning indicators include the warning values of hydrological stations, the designed high water levels and crest elevations of dikes, the bottom sill elevations of flood control gates, and the elevations of hydrophilic platforms.

6. The flood prevention four-prevention system for the "water levee and gate platform" in the urban section of the tidal river network area according to claim 1, characterized in that: The "water dike gate platform" forecasting unit includes, S2.1, obtaining the upstream inflow boundary, downstream tide level boundary, and the actual and forecast rainfall data of each water conservancy area in the urban area; S2.2, calling the tidal river network hydrodynamic and water quality model in the simulation unit to obtain the forecast water situation of the river network section in the urban area; S2.3, according to the forecast water situation of the river network section in the urban area and the default pump gate scheduling rules, calling the simulation unit to calculate and analyze the forecast data of each moment and each section of the river network in the urban area.

7. The flood prevention four-prevention system for the "water dike gate platform" in the urban section of the tidal river network area according to claim 1, characterized in that: The "water dike gate platform" early warning unit includes, S2.2, using QGIS software, the data of the main river sections of the urban area in the tidal river network area and the flood control gates, water level stations, levees, and hydrophilic platforms are associated to generate river centerline data based on high-precision sections of the urban river network; S2.3, compare the forecast data of each time and each section of the urban river network with the warning indicators of water, dikes, gates and stations, and generate a warning list of water, dikes, gates and stations; the warning list includes the warning time, warning water level, warning water level station number, flood control gate number, dike number and hydrophilic platform number.

8. The flood prevention four-prevention system of the "water levee gate platform" in the urban section of the tidal river network area according to claim 1, characterized in that: The "water dike gate" rehearsal unit includes calling the simulation unit according to different rehearsal plans, rehearsing the water level change process of the urban river network at various times, and drawing a water level line chart of the longitudinal section of the urban river network based on the rehearsal results, and determining the optimal scheduling plan after comprehensive comparison.

9. The flood prevention four-prevention system for the "water dike gate platform" in the urban section of the tidal river network area according to claim 1, characterized in that: The "water dike gate" plan unit includes: S3.1, based on the distance relationship, determine the flood control materials, rescue teams, evacuation points, and flood control pump trucks near the water, dikes, gates, and platforms; S3.2, determine the flood warning level of water, dikes, gates and platforms based on the rehearsal results; S3.3, recommends emergency response plans in combination with the emergency plan knowledge base, and automatically forms emergency plans for various waterways, dikes, gates, and stations by integrating flood control materials, rescue teams, evacuation points, flood control pump trucks, and actual and forecast rainfall conditions.

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