The Ministry of Water Resources issued the "Guiding Opinions on Vigorously Promoting the Construction of Smart Water Conservancy" and the "Implementation Plan for Promoting the Construction of Smart Water Conservancy during the 14th Five-Year Plan Period", proposing to accelerate the construction of digital twin river basins and digital twin projects, and strengthen the "four pre-planning" functions.
Bingbai Technology launched a smart watershed solution.
The construction of the digital twin river basin platform of Bingbai Technology will be based on the water conservancy perception network and water conservancy business network, using the Internet of Things, big data, AI, virtual ** and other technologies, with physical water conservancy as the unit, spatio-temporal data as the baseboard, water conservancy model as the core, and water conservancy knowledge as the drive.
Carry out digital mapping and intelligent simulation of all elements of the river basin and the whole process of river basin governance and management activities, realize synchronous operation, virtual and real interaction, and iterative optimization with the physical river basin, and support the accurate decision-making of water conservancy business.
It is difficult to digitize engineeringThe foundation of digital twin engineering construction is the digitization of engineering vectors. According to the requirements of digital twin engineering construction, it is necessary to carry out vector plotting of massive drawings and materials, which is a cumbersome and arduous task. At the same time, engineering-grade digital baseplates, such as oblique photography of engineering areas, require high accuracy and need to be updated regularly.
Data integration is difficultBig data-based analysis applications usually require terabyte-level unstructured data in multiple industries, and the sharing of massive data is the foundation for intelligent analysis.
Forecasting accuracy is difficultAt present, most of the flood prediction models are improved based on the reservoir full runoff model, and the accuracy of the model is low, so it is necessary to carry out a large amount of basic data investigation and analysis to establish a forecast model model suitable for the territory, and it is necessary to modify the model algorithm based on the meteorological and environmental parameters in the basin, and determine the model parameters through the historical flood and the actual flood, which is time-consuming, technically difficult and has many bottlenecks.
Unmanned aerial vehicles (UAVs) are used to collect images for large areas of river basinsMirauge3D fully automated 3D modeling systemGenerate 3D models to obtain comprehensive texture details of ground objects, presenting a realistic and intuitive digital world and the digital base of river basins.
PassedAIRIS3 real-world 3D application systemRender terabyte-level river basin models, combined with "one map and large screen", and intuitively display meteorological elements, rainfall observations, alarm numbers, emergency plans, material conditions, flood drainage and other data in real time.
Based on the large model of the river basin and the meteorological environment algorithm, the background is integratedFlood warning, forecast, rehearsal, planand other applications.
1. Construct a digital scenario of natural watersheds
Through the organic combination of high-resolution aerospace and aviation remote sensing technology and ground hydrological monitoring technology, the establishment will be promotedIntegrated monitoring system of "air-space-ground" flood in the basinto improve the coverage, density and accuracy of the flood monitoring system in the basin.
Digitize the engineering system, scope of influence, economic and social elements and other realistic conditions of the upstream and downstream, left and right banks, main and tributaries of the rivers in the target basin, and water conservancy construction in related waters, and form two-dimensional image charts and three-dimensional models to digitally map and display the physical world.
Bingbai Technology has the industry's leading aerial survey and remote sensing equipment and a professional data collection and processing team with rich practical experience, and has a standardized data production service process to meet the data service needs of various industries such as basic surveying and mapping, survey and design, natural resources, and smart cities.
Hydrological and water resources information is the basic information for the digital mapping of river basins, involving water quantity, water level, flow, water quality, sediment, rainfall and other information. Realize real-time monitoring of all elements and improve information capture and perception capabilities.
For important reservoirs, embankments, flood storage and detention areas, sluices, pumping stations and other water conservancy projects in the basin, BIM+GIS and digital twin technology are used to establish digital images, and access real-time monitoring equipment can realize real-time monitoring of key engineering objects. By creating a digital twin of water conservancy engineering, the accurate mapping of important data can be realized, the simulation of three-dimensional scenes can be realized, and technologies such as oblique photography of drones can be used to further make the digital twin more realistic.
The real-time monitoring and simulated scheduling results are dynamically interacted, real-time integrated and high-quality simulation display, so as to realize the digitization, real-time perception and simulation visualization of water-related elements, and support and improve the "four pre-planning" work.
Establish a flood control system in the river basin
The use of satellites, radar and other remote sensing monitoring means to achieve large-scale dynamic monitoring and early warning, the use of intelligent monitoring, through the intelligent analysis of images, to achieve automatic identification, intelligent monitoring and automatic early warning.
On the basis of the national flood control and drought control command system, expand and customize the digital scenarios of flood control in the river basin, upgrade and improve the "four precautions" function of flood control in the river basin, and build a business platform for the "four precautions" for flood prevention and drought relief.
Forecast
The whole process model of "precipitation-runoff-confluence-evolution" is integrated to realize the coupling forecasting of meteorology and hydrology, hydrology and hydraulics, as well as the integration of forecasting and scheduling.
Early warning
Expand functions such as the identification of flood control risk impacts and weak links, and the identification of risk prevention and control targets of major rivers, and improve the timeliness, refinement, and coverage of flood early warnings.
Rehearsal
Expand functions such as simulation calculation and dynamic ** to support the generation of flood control scheduling scheme collections.
Plans
Integrate various flood control schemes, scheduling rules and expert experience, expand functions such as automatic scheme generation and multi-scheme comparison and selection, and support the formation of flood control scheduling decision-making optimization schemes.
Analysis of the storage capacity of the main channel
Through the calculation of river channel storage volume, the river channel scouring and silting volume, the average scouring and silting thickness of the river section, the elevation curve of the trough storage capacity, the distribution map of the trough storage capacity, the elevation curve of the scouring and silting volume, and the distribution map of the drainage and silting volume along the river were obtained.
Using the high-precision underwater terrain model, combined with the real-time prediction of water level elevation of upstream and downstream water level stations, the storage capacity of river troughs in different periods of the main main stream is calculated and analyzed, which provides data support for river evolution analysis, watershed development, flood control scheduling and river governance.
Flood dynamic evolution 3D virtual**
Based on the computing domain and the surrounding 3D scenes, the water surface layer is generated according to the water depth information, and the scalar information such as water material and water velocity vector information is mapped to the water surface layer to realize the dynamic display of terrain features, landscape and flood evolution.
Based on the three-dimensional digital scene of the river, the flood prediction model and the main stream flood evolution model are used to simulate the flood route and flood peak arrival time, analyze the upstream and downstream relationships, and study and judge the safety risks such as the risk of small reservoirs, the risk of sick reservoirs, the risk of embankment overflow, and the risk of flood inundation in the basin, so as to provide decision support for project scheduling, emergency rescue, and personnel transfer.
Detailed modeling and rendering of large scenes
With the industry's leading aerial survey and remote sensing equipment and professional data collection and processing team, it has built multi-mode data collection, processing and modeling services such as satellite remote sensing and aerial photography, and formed a set of standardized data production service processes.
The self-developed automatic real-world 3D modeling software MiRaugE3D can accurately solve the position and posture of hundreds of thousands of massive images, efficiently and steadily solve error-prone data such as weak textures and long strips, and can process millions of images to generate high-precision 3D models with real textures, and use the minimum data to express the 3D structure and lightweight model data.
Assist the dynamic operation of water conservancy projects
Based on high-precision river topography and cross-sectional data, high-frequency and high-precision remote sensing data are used to obtain water surface information such as rivers and reservoirs, and are integrated and modeled with existing hydrology, real-time monitoring of water level, flow rate, flow rate and other data to realize the real-time perception twin of the integration of water surface, water level, flow rate and flow velocity of the physical flow field of the river.
Visualization of the whole life cycle of watersheds and projects
Through real-time rendering, physical entities and business processes are displayed, combined with spatial data related calculations and analysis, as well as path planning, roaming, viewshed analysis, scene annotation and other capabilities, showing the whole picture of the river basin and the big scene to the project details, providing visual and intuitive effects for the rehearsal.