Research On Channel Prediction And Digital Platform Of Wangjiatan Reach Of The Three Gorges Reservoir

With the continuous improvement of the channel conditions in the upper reaches of the Yangtze River and the increase in freight volume,the trend of large-scale and standardized ships is obvious.Compared with the fact that the digitalization and intelligentization of the Yangtze River Channel started late,the current situation of weak information service capabilities,the contradiction is prominent.Based on software platforms such as,and etc,this article builds a three-dimensional digital waterway platform using programming languages such as,and constructs a mathematical model of the channel elements from Chongqing to Fuling.The key parameters that affect the mathematical model factors are obtained through network means,and the channel element forecast is realized.The hydrological conditions and related specifications that affect navigation are analyzed,and the programming is used to realize the visualization of the channel elements and the determination of the seaworthy area of ships of different classes.Through the particle velocity measurement technology combined with the revised Zwankov formula,the programming method is used to realize the visualization of the typical ship’s navigation resistance.The combination of the above functions is of great significance for integrating channel information and improving shipping management.The main theory and work can be summarized as follows:Researched the method based on building digital platform,analyzed the detailed reduction method of topography and landform,made a detailed description of the modeling of typical buildings such as ports and bridges,and focused on solving important difficulties such as storage and rendering of large amounts of data such as maps and elevations.The foundation of the digital platform from Chongqing to Fuling was established to lay the foundation for the following function settings.The complexity of the channel conditions caused by the existence of natural conditions such as control of the river section and fluctuating backwater in Chongqing-Fuling section was analyzed,and the channel elements of Chongqing-Fuling section were reconstructed with a mathematical model,and field verification was carried out to ensure the accuracy of the data.The main influencing factors of the big data of the channel elements are analyzed,the method of obtaining the key factors in real time by the network means is introduced in detail,the forecast of the channel elements is realized,the protonation of the channel elements is discretely made by the programming language,and the information carried by the particles is drawn Make the platform readable file to visualize the channel elements.Researched and discussed the conditions of navigable water flow,focusing on the influencing factors and calculation methods of inland vessels’ navigability from the aspects of channel water depth,channel width,channel radius of curvature,bridge height,flow field distribution,etc.,and judged different levels The vessel’s seaworthy area under different channel elements and visualize it.Developed real-time water depth,flow rate and other channel elements query module.The large-scale waterway elements that control the Wangjiatan of the river section are used as supplements to the data of the waterway platform.In view of the complicated process of setting up the video acquisition equipment of the traditional image particle speed measurement system,the use of a new type of drone to collect image video has low measurement accuracy and tracer particle costs.For higher issues,through the method of on-site measurement and theoretical analysis,the multi-particle velocity measurement technology is applied,the image coordinates are converted into world coordinates by mathematical methods,and the extracted channel element data is applied to the three-dimensional digital platform,which improves the local channel element The accuracy,combined with the Zwankov formula,realizes the visualization of the ship’s navigation resistance and ensures the practicability of the platform.A channel element database was built,and an interface was introduced between the platform and the database to realize data transfer.