Research On Route Selection Of Navigation Guidance In Construction Waters

The implementation of the "Belt and Road" and "Ocean Power’ in recent years have led to intensive development of activities such as water projects.At the same time,the significant increase in the demand for shipping market,and the increase in the size of ships,which have caused the increasing ship traffic flow density,especially where the traffic of important inland waterway is getting heavier.With the above situation,ship drivers faced a very complicated traffic environment while navigating on important inland waterways being constructed on the water.On the one hand,the part of navigable area prohibits the ship from navigating due to construction area;on the other hand,the engineering ship dispatches between different construction areas and crossed with the ship traveling in the channel.Ships on different routes merge at the position where the engineering ship intersects.These complex navigation conditions have seriously affected the navigation of ships,and even caused congestion in the area,which has reduced the efficiency of navigation.In order to select a suitable route for ships to reduce the time for the ship to pass through the area,which can achieve macro-control of the traffic flow density of the entire river section.Based on theoretical traffic flow prediction and dynamic traffic assignment,the route selection problem in ship navigation guidance is resealed.The environmental background of the route selection in the ship navigation guidance is that there is a river section in the construction operation area,the engineering ship travels in the river section and the ship navigation in the route forms an intersection.This paper,by analyzing the characteristics of ship traffic flow and factors affecting ship navigation,uses the combined forecasting method of time series and state space model to predict the ship flow of continuous section as the basis of route selection,explores the internal relationship between ship flow and travel time,to establish an impedance function and a delay time model based on interleaved gap,and to use the improved Dijkstra algorithm to solve route selection.Finally,the case designed proves that:(1)the method studied can effectively select a route with the shortest sailing time for the ship;(2)the speed of the engineering ship’s shipping interval and the distance to the point of penetration increase or decrease the delay time.