CN117371233A

CN117371233A - Reservoir flood control system based on UE technique

Info

Publication number: CN117371233A
Application number: CN202311411940.5A
Authority: CN
Inventors: 张卫国; 顾巍巍; 江雨田; 赵思远; 李聪; 朱从飞; 陈天麟; 何炳臻; 陈龙赞; 曹泽宁; 刘新立; 赵烨靖; 何平; 陈勇; 吉康; 沈日新; 朱朝阳
Original assignee: Ningbo Water Conservancy And Hydropower Planning And Design Institute Co ltd
Current assignee: Ningbo Water Conservancy And Hydropower Planning And Design Institute Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-01-09

Abstract

The invention relates to a reservoir flood control system based on UE technology, comprising: a data backplane for collecting and providing raw data; the water conservancy professional model platform is used for establishing a cascade reservoir dispatching model with a reservoir dispatching calculation function; the digital twin scene based on the UE is used for carrying out Digital Elevation Model (DEM) construction and restoration of the river basin scene; four pre-modules of step reservoir flood control specifically include: a flood forecasting module; a risk early warning module; a simulation previewing module; an emergency plan module. Based on a visual simulation engine, the invention integrates and couples a multidimensional multi-space-time scale high-fidelity mathematical model, supports full-factor four-pre-simulation of water conservancy business, builds a cascade reservoir flood control four-pre-system, and realizes early risk discovery, early warning early release, early scheme formulation and early implementation of measures.

Description

Reservoir flood control system based on UE technique

Technical Field

The invention relates to the technical field of cascade reservoir flood control scheduling, in particular to a reservoir flood control system based on a UE technology. In particular to a step reservoir flood control dispatching system based on a UE technology.

Background

The flood control scheduling of the existing cascade reservoir takes flood risk management as a core, is oriented to real-time flood control scheduling requirements, can quantify risk loss according to different risk scenes, and provides technical support for reservoir flood control situation analysis, scheduling scheme formulation, personnel risk avoidance transfer and the like.

The core function of step reservoir flood control is four pre-forms, four pre-forms refer to forecast, early warning, previewing and planning. Wherein:

the forecasting is to forecast the water safety factors such as river channel water level, flow, water quantity, underground water level, soil moisture content, sediment, ice condition, water quality, typhoon storm surge, inundation influence, displacement deformation and the like;

the early warning means that early warning information is directly transmitted to the first line of water conservancy work and the public of the affected area, and work such as project patrol, project scheduling, personnel transfer and the like is arranged;

the pre-modeling means reasonably determining a scheduling target, a pre-modeling node, boundary conditions and the like of the hydraulic service application, accurately re-modeling hydraulic engineering scheduling under a typical historical event scene, ensuring that a constructed model system is accurate, carrying out analog simulation on the hydraulic engineering application under a design, planning or future forecasting scene, finding out problems in time, and scientifically making and optimizing a scheduling scheme;

the plan is determined according to a plan determined by previewing, and engineering scheduling application, non-engineering measures and organization implementation modes are determined by considering the latest working condition and economic and social conditions of hydraulic engineering, so that the operability of the plan is ensured.

The conventional flood control scheduling system of the cascade reservoir only has the functions of forecasting and early warning, lacks the functions of forecasting and planning, and cannot realize the integral process simulation of the four-forecasting whole process of forecasting, early warning, forecasting and planning in a layer-by-layer progressive manner; the main disadvantages are that the model has insufficient capability and the accuracy of the support decision is not high, for example: the prediction is mainly based on a centralized and empirical model, the early warning capability is insufficient, the prediction capability is difficult to support multiple schemes for optimization, and the refinement degree of the prediction is insufficient.

Currently available three-dimensional visualization engines are WebGL (Web Graphics Library) and Game engines (Game engines), wherein:

WebGL is a three-dimensional drawing protocol, and is realized through relevant standard definition and technology, so that a three-dimensional scene and a visual model are smoothly displayed in a browser, and complex browsing navigation and data visual effects can be created; webGL is embedded in a browser, supporting running on multiple platforms.

The game engine generally refers to an editable computer game system and can also be a core component tool set of a real-time interactive image application program, and mainly comprises functions of a rendering engine, a physical engine, a collision detection system, sound effects, a script engine, computer animation, artificial intelligence, a network engine, scene management and the like; gaming engines were first used in the gaming design industry, and in recent years have also been used in the digital twinning-related industry.

The UE, also called UE Engine (illusion Engine), is a sub-time game Engine developed by Epic corporation, which is a real-time rendering tool of global apexes, with mature platforms and tools (Twinmotion, celium for UE, trian3DBuilder, etc.).

With digital twinning (a virtual model, which aims to accurately reflect physical objects) in recent years, higher requirements are imposed on fidelity of visual effects and smoothness of operation, and when a traditional GIS (geographic information system ) technology is applied in the field of cascade reservoir flood control scheduling, a traditional rendering engine is insufficient to meet the higher real-time rendering requirements, so that it is necessary to research that a UE technology (UE engine) is introduced and used as a real-time rendering engine in the cascade reservoir flood control scheduling technology.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a reservoir flood control system based on a UE technology, which is based on a visual analog simulation engine, integrates and couples a multidimensional multi-space-time scale high-fidelity mathematical model, supports full-factor four-pre-simulation of water conservancy business, builds a cascade reservoir flood control four-pre-system, and realizes early risk discovery, early warning early release, early scheme formulation and early implementation of measures.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a reservoir flood control system based on UE technology, the system comprising:

a data backplane for collecting and providing raw data for model generation and system operation;

the water conservancy professional model platform is used for establishing a cascade reservoir dispatching model with a reservoir dispatching calculation function;

the digital twin scene based on the UE is used for carrying out Digital Elevation Model (DEM) construction and restoration of the river basin scene; the river basin scene is more specifically a cascade reservoir joint scheduling scene;

Four pre-modules of step reservoir flood control specifically include:

the flood forecast module is used for providing corresponding operation forecast information according to different rainfall grades, and the operation forecast information comprises: operation forecast of reservoir flood, operation forecast of downstream river flood and operation forecast of downstream town flood;

the risk early warning module is used for constructing a flood risk early warning mechanism according to the operation forecast information provided by the flood forecast module, generating a risk early warning diagram and issuing early warning information;

the simulation previewing module is used for simulating and previewing the flood evolution conditions of the reservoir and the river channel on the basis of the operation forecast of the flood forecast module on the reservoir and the downstream river channel, and generating or updating a previewing scheme according to the set flood control scene target;

and the emergency plan module is used for providing plan measures after performing influence analysis according to the plan provided by the simulation plan module.

On the basis of the technical scheme, a cascade reservoir dispatching model is called for reservoir dispatching calculation based on a data base plate, and then a calculation result is rendered by adopting a UE technology and is presented through a digital twin scene based on UE; when the method is used, the digital twin scene provides geographic information data, the water conservancy professional model platform provides water conservancy model calculation data, and scene dynamics is realized through combination of the geographic information data and the water conservancy model calculation data.

On the basis of the technical scheme, the data base plate specifically comprises:

covering the national L1-level data base plate;

an L2-level data base plate covering a main river basin key area;

constructing L2-level and L3-level data base plates of engineering;

a data backplane derived from perceptual monitoring, the perceptual monitoring comprising any of the following techniques: satellite remote sensing, unmanned aerial vehicle oblique photography, laser radar scanning modeling, building information model and multi-beam measurement; forming basic information data, service management data, real-time monitoring data and geospatial data through the whole elements and the whole process of the perception monitoring convergence engineering;

data backplane from cross-industry sharing refers to data from data sharing data sources of various collaborative departments.

On the basis of the technical scheme, the step reservoir dispatching model establishment specifically comprises the following steps:

developing a water conservancy professional model, wherein the water conservancy professional model refers to a cascade reservoir scheduling model and specifically comprises the following steps: the system comprises a regional refined rainfall model, a cascade reservoir flood forecast model, a cascade reservoir joint scheduling model, a reservoir downstream one-dimensional flood evolution model, a reservoir downstream two-dimensional flood evolution model, a reservoir downstream one-dimensional and two-dimensional coupling model and a dam break drainage analysis model;

After the hydraulic professional model service is released, the hydraulic professional model platform is used for constructing and releasing the model service, and a flood forecasting module in the four cascade reservoir flood control pre-modules calls the corresponding model service according to the requirement;

determining specific parameters and establishing a cascade reservoir professional model according to a specific research area, and particularly constructing a cascade reservoir scheduling model suitable for the river basin characteristics and the specific parameters of the research area by a water conservancy professional model platform;

and (5) model verification.

On the basis of the technical scheme, after model verification, model parameter calibration is further carried out on the basis of historical typical events and samples through a water conservancy professional model platform;

the model parameter calibration is divided into a periodic rate period and a checking period, the characteristic rule of the water conservancy service is reflected by selecting a historical typical event and a sample, and a reasonable parameter value is finally determined;

and (3) carrying out model parameter rate timing, and improving the rate efficiency and parameter rationality by adopting a mode of combining manual operation and optimization.

On the basis of the technical scheme, the digital twin scene based on the UE is realized through the following steps:

constructing a three-dimensional river basin scene for a river channel, key water conservancy facilities and a downstream influence area of a reservoir, and restoring the river basin scene;

The PBR material is manufactured in a three-dimensional scene and combined with the BIM model, so that hydraulic engineering is restored, and simulation of static data is realized; then, further realizing the simulation of dynamic data through data association and video fusion;

on the basis of restoring a river basin scene and restoring hydraulic engineering, constructing a three-dimensional scene digital base plate, and then further constructing a UE engine scene by combining a geographic coordinate system, an elevation reference and a time system;

dividing drainage basin grids by adopting drainage basin longitude and latitude elevations;

judging the submerged position and height of the basin based on the basin grid and the water depth submerged algorithm, and realizing the plains submerged simulation;

the inundation thermodynamic diagram expression of the difference between the relevant normal water level and the current water level is realized by taking the river basin grid as a dimension, and the water surface dynamic change is driven by a vertex rendering mode, so that the river channel water surface simulation is realized;

predicting a flood inundation area based on a standard gradient descent algorithm with minimized kinetic energy through a flood inundation model and an algorithm, and further realizing water flow evolution simulation on the basis of river water surface simulation in a frame animation rendering mode through the elevation difference of terrain in a digital twin three-dimensional scene of a river basin; the water flow evolution simulation is used for forming a flood water flow evolution effect on the water surface of the manufactured river channel;

On the basis of plain inundation simulation, river water surface simulation and water flow evolution simulation, calculating and generating a flood inundation water surface grid at each time point by increasing a time dimension, designing a departure event by using a blueprint, effectively and truly backtracking a historical event or designing a previewing forecasting scheme, and constructing a flood evolution simulation scene;

marking water conditions, rain conditions and industrial conditions in the range of the river basin in a digital twin three-dimensional scene, making various thresholds, constructing engineering potential overview monitoring and early warning, and realizing water level oversupply, storm early warning and industrial condition abnormality-map overview;

real-time monitoring is carried out on hydraulic facility equipment in a river basin scene, and an engineering hydraulic engineering running state simulation scene is constructed through access of engineering data;

after the steps, the digital twin scene based on the UE can be used for constructing and providing a step reservoir joint scheduling scene based on the UE, and the step reservoir joint scheduling scene based on the UE is used by a simulation previewing module in the step reservoir flood control four pre-modules.

On the basis of the technical scheme, the flood forecast module needs to clearly forecast tasks before carrying out operation forecast;

The explicit forecasting task is determined according to the water conservancy emergency requirement of the research area and specifically comprises a forecasting range, a forecasting object and a forecasting element;

the realization of the operation forecast requires three steps of condition setting, model calculation and achievement display, a boundary condition and an initial condition of a cascade reservoir dispatching model are generated based on a data base plate, the cascade reservoir dispatching model is called for simulation calculation, and a model calculation result is displayed in a GIS layer form;

before an early warning mechanism is established, the risk early warning module needs to definitely and definitely warn tasks, and early warning release is carried out after the establishment is completed;

the explicit early warning task is determined according to a water conservancy emergency response phase rule and specifically comprises an early warning element, an early warning threshold value and an early warning range;

when an early warning mechanism is established, the current situation of hydraulic engineering and the current situation of a flood control organization system of a construction area are combined;

when early warning release is carried out, the operation forecast of the flood forecast module is needed to be combined;

before analog simulation is carried out, the simulation previewing module needs to clearly previewing tasks;

the explicit previewing tasks are specifically classified into the following categories: taking the flood control engineering at the upstream and downstream of the cascade reservoir and the affected area as a previewing object to ensure the safety of personnel in the downstream river flood control and protection area and the safety of water supply and hydraulic engineering as previewing objects;

The simulation previewing module is further driven by a calculation result of reservoir dispatching calculation of the cascade reservoir dispatching model based on a digital twin scene of the UE, and realizes dynamic simulation of forecasting flood and historical typical flood;

before carrying out the plan response analysis, the emergency plan module needs to define plan tasks firstly, and then an optimal reservoir dispatching scheme is generated after the plan response analysis is completed;

the specific plan task is determined according to reservoir flood defense requirements, and specifically comprises personnel transfer, hydraulic engineering scheduling and rescue measures;

and during the plan response analysis, referring to the latest local flood control plan measures, and analyzing by combining monitoring data provided by the data base plate, operation forecast of the flood forecast module and simulation results of the simulation forecast module.

Based on the technical scheme, according to the result of the simulation previewing module, the comprehensive analysis and evaluation are carried out on the object, personnel and economic losses possibly influenced after the implementation of different schemes, and according to the actual situation of the river basin and the historical typical flood event, the scheme optimization is carried out after comprehensive utilization of expert experience, and the optimal reservoir scheduling scheme is determined and generated.

On the basis of the technical scheme, the flood forecasting module specifically comprises the following functions:

(1) Automatic real-time forecasting; (2) forecasting the manual operation; (3) forecast achievement release; (4) forecasting achievement evaluation;

the risk early warning module specifically comprises the following functions:

(1) Real-time early warning map; (2) forecasting an early warning map; (3) early warning information release; (4) statistics of early warning information; (5) early warning threshold management; (6) managing early warning responsible persons; (7) early warning short message template management;

the simulation previewing module specifically comprises the following functions:

(1) A river basin visual angle simulation previewing; (2) reservoir visual angle simulation previewing; (3) downstream interval visual angle simulation previewing;

the emergency plan module specifically comprises the following functions:

(1) Engineering scheduling operation; (2) non-engineering measure establishment; (3) protocol organization enforcement; (4) plan query management.

The reservoir flood control system based on the UE technology has the following beneficial effects:

1. based on the UE engine, manufacturing a reservoir water surface and a river channel water surface, setting node height-associated rear-end data, analyzing real-time reservoir water level data and river channel water level data, and driving the water surface to dynamically change;

2. based on a UE engine, predicting a flood inundation area by adopting a standard gradient descent algorithm with minimized kinetic energy, constructing and using a frame animation rendering based on TimeLine in a specific digital twin three-dimensional scene by using a DEM scene model height difference, carrying a flood inundation model algorithm, calculating and generating a flood inundation surface grid at each time point, and using a blueprint to design a trigger event so as to effectively realize real-time three-dimensional simulation of flood inundation;

3. Based on the UE engine, the hydraulic facility equipment in the river basin scene is monitored in real time, visual overview of hydraulic engineering scheduling operation is realized through access of engineering data, scheduling targets, preview nodes and boundary conditions are formulated, forward pre-performance risk forms and influences are deduced reversely, the problem is not found in time when the hydraulic engineering safe operation limiting conditions are deduced reversely, an iterative optimization scheme is adopted, risk prevention measures are formulated, and support is provided for river basin and region planning, hydraulic engineering scheduling operation, social and economic risk management and the like.

The reservoir flood control system based on the UE technology further realizes the functions of previewing and planning on the basis of the functions of forecasting and early warning, wherein:

the previewing function performs simulation previewing on the flood evolution conditions of reservoirs and river channels according to the water and rain condition forecasting conditions by using digital, gridding and intelligent means to realize the integrated coupling of the water engineering forecasting information, the scheduling operation information and the boundary conditions;

the plan function is combined with the running state of the water project and the current state of economic and social development, the scheme after the completion of multiple calculation and simulation and previewing is subjected to influence analysis, plan measures are provided, the counter measures such as water project running, emergency dispatch, personnel disaster prevention and risk avoidance are rolled and optimized, and the river basin planning, regional planning, important water project dispatching running plan and the like are comprehensively considered to form a river basin and regional water project joint dispatching scheme;

The invention further introduces and adopts the UE technology, and utilizes the river basin digital scene, the river channel digital scene, the key hydraulic engineering live-action three-dimensional model scene and the like constructed by the three-dimensional visualization engine to realize the important basic support of the functions.

According to the invention, new generation information technologies such as the Internet of things, cloud computing, big data, artificial intelligence, digital twinning and the like are fully utilized, a digital twinning river basin is constructed, the water condition forecasting and intelligent scheduling capability is improved by realizing the four-in-one function, the water conservancy treatment mode innovation is promoted, overall development and safety are improved, and the economic operation is stable and far and the social stability is harmonious by assisting.

Drawings

The invention has the following drawings:

the drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:

fig. 1 is a block diagram of the overall architecture of a reservoir flood control system based on UE technology.

FIG. 2 is a schematic diagram of a data backplane.

FIG. 3 is a schematic diagram of a hydraulic engineering model platform.

Fig. 4 is a schematic diagram of a UE-based digital twinning scenario.

Fig. 5 is a schematic diagram of a four-step reservoir flood control pre-module.

Fig. 6 is a four-pre-functional block diagram of a reservoir flood control system based on UE technology according to the present invention.

Fig. 7 is a flood forecast function framework diagram.

Fig. 8 is a functional framework diagram of risk early warning.

Fig. 9 is a diagram of a simulation preview function framework.

FIG. 10 is a functional framework diagram of an emergency plan.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The detailed description, while indicating exemplary embodiments of the invention, includes various details of the embodiments of the invention for the purpose of illustration only, should be considered as exemplary. Accordingly, those skilled in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The invention aims to strengthen the visualization capability of flood forecasting, risk early warning and flood evolution processes based on a three-dimensional scene digital base plate, and realize reservoir flood control situation analysis, flood operation forecasting, scheduling scheme formulation and downstream personnel danger avoiding transfer routes.

As shown in fig. 1 and 6, the present invention provides a reservoir flood control system based on UE technology, the system includes:

the digital twin scene based on the UE is used for constructing a restored watershed scene by a digital elevation model (Digital Elevation Model, DEM for short); for example: constructing a digital twin scene based on a UE technology, and restoring a river basin scene through the digital twin scene, wherein the river basin scene is more specifically a cascade reservoir joint scheduling scene;

based on a data base plate, calling a cascade reservoir dispatching model to carry out reservoir dispatching calculation, and then rendering a calculation result by adopting a UE technology and presenting through a digital twin scene based on UE; when the method is used, the digital twin scene provides geographic information data, the water conservancy professional model platform provides water conservancy model calculation data, and scene dynamics is realized through the combination of the geographic information data and the water conservancy model calculation data;

four pre-modules of step reservoir flood control specifically include:

The reservoir flood control system based on the UE technology breaks through the limitation that the data chart display is not visual enough and the flood development two-dimensional plane display lacks space third dimension, realizes the cascade reservoir flood development scene based on the UE technology, further performs risk early warning and simulation pre-modeling on the basis of operation prediction of the flood prediction module, performs influence analysis based on the pre-modeling scheme, generates an emergency pre-modeling, and realizes the overall process integrated application of constructing the flood prediction, the risk early warning, the simulation pre-modeling and the emergency pre-modeling.

On the basis of the above technical solution, as shown in fig. 2, the data backplane specifically includes:

Covering the national L1-level data base plate, such as an L1-level data base plate shared by the access water conservancy department (except for the river basin management agency, the following is the same); in the example shown in fig. 2, a data sharing data source of the water conservancy department local level can be accessed to obtain an L1-level data base plate covering the whole country;

an L2-level data base plate covering a main river basin key area, such as an L2-level data base plate shared by an access basin management organization and a provincial water administration authority; in the example shown in fig. 2, a data sharing data source of the water saving hall can be accessed to obtain an L2-level data base plate covering a key area of a main river basin;

construction engineering L2 and L3 level data base plates, such as construction engineering L2 and L3 level data base plates generated by utilizing data such as reservoir engineering design construction drawings, building information models (Building Information Modeling, BIM for short) and the like; in the example shown in fig. 2, a data sharing data source of a water conservancy bureau of a city can be accessed to obtain a construction engineering L2 level data bottom plate and a construction engineering L3 level data bottom plate;

Data from data base plates shared across industries, wherein the data shared across industries refers to data from data sharing data sources of each cooperative department, such as social and economic information data from data sharing data sources of municipal natural resources and planning departments; rain condition data and radar weather data from a data sharing data source of a city weather bureau.

On the basis of the technical scheme, as shown in fig. 3, the step reservoir dispatching model establishment specifically comprises the following steps:

developing a water conservancy professional model, wherein the water conservancy professional model refers to a cascade reservoir scheduling model, and specifically comprises the following steps as shown in fig. 3: the system comprises a regional refined rainfall model, a cascade reservoir flood forecast model, a cascade reservoir joint scheduling model, a reservoir downstream one-dimensional flood evolution model, a reservoir downstream two-dimensional flood evolution model, a reservoir downstream one-dimensional two-dimensional coupling model (flood coupling model) and a dam break drainage analysis model;

And (5) model verification.

As one of the alternative embodiments, the invocation of the model service is provided in the form of an interface.

In selecting historical typical events and samples, several factors need to be considered:

1. the selected historical typical events and samples can reflect the characteristic rules of water conservancy service;

2. the events and samples need to be highly representative, and the number of samples meets the requirements of the standard specification.

On the basis of the above technical solution, as shown in fig. 4, the digital twin scene based on UE is implemented by the following steps:

constructing a three-dimensional river basin scene for a river channel, key water conservancy facilities and a downstream influence area of a reservoir, and restoring the river basin scene; illustratively, according to digital orthophoto map (Digital Orthophoto Map, abbreviated as DOM), digital terrain elevation model (Digital Elevation Model, abbreviated as DEM), digital surface model (Digital Surface Model, abbreviated as DSM), oblique photography, image laser point cloud, underwater terrain high-precision or medium-low precision terrain data, river basin three-dimensional scene construction is carried out on river courses, key water conservancy facilities and influence areas downstream of reservoirs, and river basin scenes are restored;

Preparing a PBR (physical-Based Rendering, PBR for short) material in a three-dimensional scene, combining the PBR material with a BIM model, and restoring hydraulic engineering to realize simulation of static data; then, further realizing the simulation of dynamic data through data association and video fusion;

illustratively, according to professional oblique photography mapping model information and live-action shooting information, PBR materials are manufactured in a three-dimensional scene, and a BIM model manufactured by professionals is combined to restore hydraulic engineering; the combination of the BIM model and the PBR material realizes the simulation of static data (model appearance and environment) and the model of the three-dimensional scene of the system is matched with the physical appearance in the real scene;

by means of the water level and the gate pump opening and closing data association, simulation of a gate state (opening or closing) and a river channel water level (low water level or high water level, the low water level possibly exposing a river bed, and the high water level possibly submerging houses on two sides of the river channel) is achieved;

the video (monitoring video) fusion means, for example, accessing an existing video monitoring point, displaying the position of the monitoring point on a three-dimensional digital twin bottom plate, and clicking to view the content of the real-time monitoring video;

On the basis of restoring a river basin scene and restoring hydraulic engineering, constructing a three-dimensional scene digital base plate, and then further constructing a UE engine scene by combining a geographic coordinate system, an elevation reference and a time system; the geographic coordinate system used as a space reference adopts a 2000 national geodetic coordinate system (CGCS 2000), the elevation reference adopts a 1985 national elevation reference, the time system adopts an epoch and Beijing time, and a UE engine scene is constructed on the basis of restoring a river basin scene and restoring hydraulic engineering;

dividing drainage basin grids by adopting drainage basin longitude and latitude elevations; by way of example, through map processing software, the division of the drainage basin grid is realized by adopting drainage basin longitude and latitude elevations; the map processing software may be any or part or all of the following: the GIS platform Arcgis (Geographic Information System (GIS) by Esri is abbreviated as Arcgis), the Computer-Aided Design CAD (Computer-Aided Design CAD), the CAE application software package Hypermesh (HyperMesh by Altair is abbreviated as Hypermesh);

Predicting a flood inundation area based on a standard gradient descent algorithm with minimized kinetic energy through a flood inundation model and an algorithm, and further realizing water flow evolution simulation on the basis of river water surface simulation in a frame animation rendering mode through the elevation difference of terrain in a digital twin three-dimensional scene of a river basin; the water flow evolution simulation is used for forming a flood water flow evolution effect on the water surface of the manufactured river channel; the elevation difference of the terrain can be calculated through the existing DEM (digital elevation model), and the details are not described;

On the basis of the technical scheme, as shown in fig. 5, before the flood forecast module performs the operation forecast, the flood forecast module needs to explicitly forecast the task;

As one of the alternative embodiments, according to the result of the simulation previewing module, the object, personnel and economic losses which are possibly influenced after different schemes are implemented are comprehensively analyzed and evaluated, according to the actual situation of the river basin and the historical typical flood event, the scheme is optimized after expert experience is comprehensively utilized, and the optimal reservoir scheduling scheme is determined and generated.

The four pre-modules for flood control of the cascade reservoir are described in detail below.

1. Flood forecasting module

And collecting and accessing water rain engineering condition monitoring data and weather rainfall forecast data, fully utilizing technical means such as cloud computing, mathematical models and the like, and providing operation forecast functions of reservoir flood entering, downstream river flood and downstream village and town flood under different rainfall grades. As shown in fig. 7, the functions of the flood forecast module specifically include:

(1) Automatic real-time forecasting

And carrying out model automatic operation forecasting on the main flows of the cascade reservoirs and the downstream engineering influence area based on a forecasting model by combining the change condition of engineering scheduling through information such as real-time water rain conditions, drainage basin bedding surfaces, engineering scheduling, weather rainfall forecasting and the like. The method comprises four parts of parameter setting, automatic forecasting, manual updating and result inquiring.

1) Parameter setting

And adding a parameter setting function on the basis of rainfall forecast updated by the model according to rolling. Different scheduling scenes are constructed by selecting scheduling modes and parameters configured by different reservoir projects; based on the setting result of the scheduling scheme, the calculation strategy is set, including whether hydrodynamic calculation is performed, the automatic forecasting time point, the forecasting interval, the forecasting forward time, the result storage duration and the like, so that the user is supported to timely change the automatic real-time forecasting parameter setting according to the actual or scheduling scheme.

2) Automatic forecasting

The forecasting interval can be set to be 1, 2, 3, 4, 6, 12 or 24 hours, and the system automatically updates and calculates the reservoir forecasting scheduling result under the boundary condition at the moment through the calculation of the bottom model at the set forecasting time point.

3) Manual updating

When the forecast parameters change, such as reservoir dispatching mode, adopted forecast mechanism, early warning standard or time, etc., the relevant parameters can be modified in the setting and the update calculation can be clicked, and the forecast result under the latest condition can be obtained by manual update.

4) Result query

And calculating the finally simulated forecasting results of the flood in the river basin under different dispatching conditions through a model, wherein the checking mode comprises a graph form and a table form.

(2) Manual operation forecast

On the premise that the model automatically carries out flood forecast according to the rainfall forecast updated by rolling, when the forecast warehousing flow or the reservoir water level possibly exceeds a threshold value, the model automatically alarms, related staff intervenes in operation forecast work, and according to different working conditions and possible occurrence conditions, the real-time interactive forecast functions of scene configuration, simulation analysis and simulation result viewing are realized according to the real-time rainfall observation data and the three-day future rainfall forecast data, and the watershed flood forecast results under different scheduling conditions are simulated.

1) Scene configuration

The scenario configuration includes a rain scenario configuration and a schedule scenario configuration.

The rainfall scene configuration fuses multisource weather refined short-term rainfall forecast data, and provides two setting modes of rainfall forecast, namely institution forecast and custom forecast; in the type of the historical replay scheme, actually measured rainfall is increased, and the rainfall actually occurring in the period is used for carrying out the double-disc calculation. And the rainfall forecast result shows the rainfall of the produced flow area per hour.

The dispatching scene configuration is divided into reservoir dispatching configuration and flood discharging facility configuration. The reservoir dispatching configuration supports modification of the starting water level and dispatching modes of the cascade reservoir, and comprises six dispatching modes of a control operation plan, reservoir power generation only, opening instruction dispatching, flow instruction dispatching, highest water level control and maximum flow control, so that construction of dispatching scenes under different instructions of the reservoir is realized; by means of flood discharging facility configuration, whether different flood discharging facilities of the reservoir are started, such as a flood discharging gate, a generator set, a flood discharging tunnel, a water diversion tunnel and the like, are selected, and the discharge capacity of the reservoir under different conditions can be checked. And a complete dispatching scene is constructed by configuring a reservoir dispatching mode and the service condition of reservoir pre-discharging facilities.

And combining the configured rainfall scene with the scheduling scene to finally form various forecast scheduling schemes.

2) Simulation analysis

And (3) freely combining different rainfall scenes and scheduling scenes established under the same scheme to finally form a plurality of groups of job forecasting schemes. Different calculation strategies can be selected for different schemes: the hydrodynamic force calculation, the one-dimensional hydrodynamic force calculation and the one-dimensional and two-dimensional coupling hydrodynamic force calculation are not performed. The bottom layer model comprehensively utilizes the multi-process and thread pool technology to realize parallel calculation of models in different modes such as single-scene multi-component, single-scheme multi-scene, multi-scheme multi-scene and the like, improves the overall calculation efficiency and lays a foundation for optimization of a scheduling scheme.

3) Simulation effort review

The graph intuitively shows the change of the water level of the water reservoir and the process of the flow rate of the warehouse-in and the flow rate of the warehouse-out in the forecast period; the results obtained by the tables are mainly divided into five parts, namely a reservoir schedule table, a rainfall result table, a production flow calculation table, a characteristic statistics table and a section result table. The reservoir schedule displays the surface rainfall, the reservoir water level, the reservoir capacity, the warehousing flow and the ex-warehouse flow in the reservoir forecast period hour by hour, and marks the maximum value; the rainfall result table and the runoff result table show the hourly rainfall and the runoff results of four runoff converging areas of the river basin; the characteristic statistical table intuitively displays a scheme profile, a rainfall profile, a flood profile and a scheduling profile; the section result table shows the hour-by-hour water level and flow rate of the representative section downstream of the reservoir.

(3) Forecast achievement issuing

The release of the forecast result is shown in a form of generating a job forecast brief, the content of the brief is mainly four results in the job forecast, and key information and fields are as follows: flood number time, analysis time, research basis, research result, analyst, audit and issue. The operation forecast brief report can concisely and clearly show the main information of the forecast operation, so that the corresponding responsible person of the department can quickly master the key content of the forecast operation.

(4) Forecast result evaluation

The multi-scheme evaluation is preferably to evaluate and compare different calculation schemes in the same flood process so as to preferably select a scheme with smaller flood risk. And assigning a score preference to the forecast result score object and score index. For each reservoir project, three evaluation objects are set up, namely reservoir, upstream reservoir and downstream reservoir. Setting two evaluation indexes of the highest water level and peak clipping rate for the reservoir; setting an overground water level duration evaluation index for the upstream of the reservoir; and setting two evaluation indexes of maximum flow of the control section and ultra-safe flow for the downstream of the reservoir. And performing scoring calculation through a fuzzy iterative algorithm of reservoir flood control scheduling, displaying by combining a radar chart, visually displaying an optimal scheme, and providing a basis for forecasting the optimal decision of the scheduling scheme.

2. Risk early warning module

Based on reservoir flood forecast, a flood risk early warning mechanism is constructed, and functional modules such as a construction risk early warning diagram, early warning information release and the like are developed. As shown in fig. 8, the functions of the risk early warning module specifically include:

(1) Real-time early warning chart

Based on real-time monitoring data such as water conditions, rain conditions, industry conditions and the like, and in combination with water level values of all levels of the early warning stations, the system automatically performs flood early warning analysis on the current situation, and displays the classified early warning conditions of all early warning representative stations in a flashing mode of different colors on a map.

(2) Forecast and early warning graph

Based on flood forecast result data, the system automatically performs flood early warning analysis for a period of time in the future by combining water level values of various levels of early warning stations, and displays the grading early warning conditions of various early warning representative stations in a flashing mode of different colors on a map.

(3) Early warning information release

And constructing a flood disaster early warning information template according to the early warning release related requirements, wherein the flood disaster early warning information template comprises release units, release time, early warning time range, early warning area range, early warning signals, defense suggestions and the like. The system can generate flood early warning information according to the selected flood forecast scheduling scheme by one key, and supports functions of on-line checking, downloading, sharing and the like of the flood early warning information.

And early warning information is accurately issued to flood control accountability, engineering management organization accountability and the like in time by using an early warning short message mode.

(4) Early warning information statistics

And carrying out statistical analysis on the early warning information according to various dimensions such as departments, administrative areas, time periods and the like, and counting the quantity, frequency and other element information of the early warning information.

(5) Early warning threshold management

The method provides convenient management functions of various early warning thresholds, including early warning level, early warning color, early warning index setting and the like.

(6) Early warning responsible person management

According to flood control responsibility human system information, management personnel can select related personnel and personnel groups from system organization responsibility personnel as sending objects aiming at the management embankment project defenders of each level of water administration authorities.

(7) Early warning short message template management

The system provides the early warning information template management function, and the manager can add, modify and delete the early warning information template.

3. Simulation previewing module

The prediction is to use digital, gridding and intelligent means to realize the integrated coupling of the water project forecast information, the dispatching operation information and the boundary conditions, simulate the flood evolution conditions of reservoirs and river channels according to the water and rain condition forecast conditions, set comprehensive flood control scene targets, timely roll and update the prediction scheme, rapidly analyze and display risk situations and provide scientific decision support for flood defense. As shown in fig. 9, the functions of the simulation previewing module specifically include:

(1) Basin visual angle simulation previewing

And starting from the integral drainage basin forecasting and scheduling integrated demand, constructing a drainage basin visual angle three-dimensional scene simulation previewing module. Combining with the achievements of flood forecast scheduling, systematically integrating a real-scene three-dimensional model of a main river reach in an area and a hydrodynamic flood model of a river network, displaying the time-space change dynamic process of flood evolution in real time in the real-scene three-dimensional model, displaying the actual evolution condition of the flood in a river basin with specific magnitude or actual measurement in a three-dimensional, visual, intelligent and dynamic display form, and reflecting the dynamic condition of important protection objects along the river channel under different field flood conditions in real time, thereby providing accurate decision basis for early warning forecast, auxiliary decision making and disaster prevention and reduction.

By using continuously updated flood forecast information, based on a human-computer interaction mode, an automatic forecast technology is fused, the drainage process and the water level change condition under different scheduling operation modes are obtained through repeated simulation of a flood control scheduling model, and the unreasonable scheduling operation mode is modified according to the operation result until a real-time optimal scheduling strategy which is generally superior to a reference target value is obtained, the online joint scheduling of two reservoirs is supported, and the fine scheduling level of a patch area is improved.

According to the previewing scheme, the whole flood process can be played hour by hour, and the functions of previewing speed setting, display element setting, playing, pausing and the like are provided.

(2) Reservoir visual angle simulation previewing

And customizing the reservoir visual angle three-dimensional scene simulation previewing module. And on-line simulating the rainfall, warehouse entry, warehouse exit, water level and warehouse capacity change process of the reservoir by means of flood forecast schemes, engineering running state data and the like, and displaying the opening and closing conditions of related drainage equipment by combining with BIM models of reservoir dams, power stations, flood discharge holes, pre-discharge facilities and the like.

(3) Downstream interval visual angle simulation previewing

And constructing a three-dimensional scene simulation previewing module in a downstream interval of the reservoir. By accessing measured water level data, engineering running state data, rainfall monitoring forecast data, measured flow rate, flood forecast scheme results and the like, and combining a digital twin bottom plate of a downstream influence area of reservoir engineering and a downstream river channel flood evolution model, the flood process simulation in a downstream interval is realized, and the potential occurrence range and degree of flood disasters are analyzed and displayed, wherein the flood process simulation comprises flood peak arrival time, flood water level process and the like.

4. Emergency plan module

The emergency plan can perform impact analysis on the plan after the calculation of a plurality of items and simulation preview are completed and provide plan measures. According to the flood control method, flood control and prediction results are evaluated according to the running conditions of the water projects and the current situation of economic and social development, influences of the prediction schemes are analyzed, countermeasure measures such as water project running, emergency dispatch, personnel disaster prevention and risk avoidance are optimized in a rolling mode, basin planning, regional planning, important water project dispatching running plans and the like are comprehensively considered, a basin and regional water project joint dispatching scheme is formed, countermeasure measures such as water project running dispatching schemes, project inspection defending, personnel transferring risk avoidance and the like are optimized and perfected, and scientificity and operability of the prediction schemes are effectively improved. As shown in fig. 10, the functions of the emergency plan module specifically include:

(1) Engineering dispatch operation

And determining the flood discharge sequence, opportunity, rules and the like of the reservoir according to system analysis, research and judgment and expert consultation. According to the scheme determined by the previewing, the latest working condition of the reservoir and the social and economic conditions of the downstream influence area of the reservoir are considered, the specific scheduling and application mode of the reservoir is defined, and the reality and operability are ensured.

(2) Non-engineering measure formulation

The method mainly comprises the countermeasures of on duty, material equipment configuration, rescue personnel allocation, technical expert team construction, affected personnel transfer and the like. Wherein, the material equipment is preset in advance, so that timely and smooth calling and supply are ensured. The personnel transferring measures are used for defining the transferring mode and the transferring route according to the principle of nearby convenience. The reservoir and downstream river course clearly patrol the defending measures, the dangerous situation is treated in time.

(3) Plan organization implementation

The implementation mechanism, authority and responsibility of the measures such as engineering dispatching application, material equipment allocation, emergency rescue, personnel transfer and the like are realized, and the information reporting content, mode and requirement are classified and specified.

(4) Plan query management

By means of prepositive works such as collection of data such as flood defense related emergency plans and exercises of management departments and data uploading, a plan list display is provided, and a reasonable flood control rescue scheme is provided for users, so that the users can make corresponding decisions timely and quickly. The protocol may be managed, including query, view, upload, and download functions. After inquiring the plan according to the inquiry conditions of the plan text name, the plan category, the year, the issuing unit and the like, the inquiry result is displayed in a list form, and the functions of browsing and printing the plan in detail can be performed after the plan name is clicked to download the plan locally.

What is not described in detail in this specification is prior art known to those skilled in the art.

The above description is merely of the preferred embodiments of the present invention, the protection scope of the present invention is not limited to the above embodiments, but all equivalent modifications or variations according to the disclosure of the present invention should be included in the protection scope of the claims.

Claims

1. A reservoir flood control system based on UE technology, the system comprising:

four pre-modules of step reservoir flood control specifically include:

2. The reservoir flood control system based on the UE technology as claimed in claim 1, wherein the step reservoir scheduling model is called to perform reservoir scheduling calculation based on the data base plate, and then the calculation result is rendered by the UE technology and is presented through a digital twin scene based on the UE; when the method is used, the digital twin scene provides geographic information data, the water conservancy professional model platform provides water conservancy model calculation data, and scene dynamics is realized through combination of the geographic information data and the water conservancy model calculation data.

3. The reservoir flood control system based on UE technology of claim 1, wherein the data base plate specifically comprises:

Covering the national L1-level data base plate;

an L2-level data base plate covering a main river basin key area;

constructing L2-level and L3-level data base plates of engineering;

4. The reservoir flood control system based on the UE technology as claimed in claim 1, wherein said step reservoir scheduling model establishment comprises the steps of:

and (5) model verification.

5. The reservoir flood control system based on the UE technology as claimed in claim 4, wherein after model verification, model parameter calibration is further performed based on historical typical events and samples through a water conservancy professional model platform;

6. The UE technology based reservoir flood control system of claim 1, wherein the UE based digital twinning scenario is implemented by:

7. The reservoir flood control system based on the UE technology as claimed in claim 1, wherein the flood forecast module needs to explicitly forecast tasks before carrying out operation forecast;

8. The reservoir flood control system based on the UE technology as claimed in claim 7, wherein the object, personnel and economic losses possibly affected after different schemes are implemented are comprehensively analyzed and evaluated according to the result of the simulation previewing module, and the scheme is optimized after comprehensive utilization of expert experience according to the actual situation of a river basin and historical typical flood events, so that an optimal reservoir scheduling scheme is determined and generated.

9. The reservoir flood control system based on UE technology as claimed in claim 1, wherein the functions of the flood forecast module specifically include:

the risk early warning module specifically comprises the following functions:

the emergency plan module specifically comprises the following functions: