Study On Passing Capacity And Saturation Of Dagusha Channel

Channel passing capacity is a measure of the ability to dredge ships,which affects the overall function of the port directly.Systematic study on the channel passing capacity can provide important basis for the reconstruction and expansion of the channel,planning and design of port.It has important practical significance for improving the navigation status of channels,ensuring the full utilization of terminal resources and improving the service level of ports.In view of this,this paper studies the passing capacity of the Dagusha Channel in 2030,and this paper provides references for the development and planning of the channel.In this paper,three methods of ship domain model calculation,queuing theory model analysis and Matlab system simulation are used to study the passing capacity of the Dagusha channel.The focus of the three methods are different.The calculation based on the ship domain model focuses on the navigation safety of the ship,it introduces saturation to evaluate the service level of the channel;The queuing theory.model studies the queuing process of ships entering and leaving the port from system perspective,it focuses on the efficiency of ship navigation operations;The system simulation reiearch is based on queuing theory,and it conducts a more intuitive and visual study 'of channel passing capacity.The specific research process is as follows:Firstly,the traffic capacity of the Dagusha Channel is obtained based on the Fujii domain model,and the saturation is obtained by comparing with the ships flow,so as to determine the service level of the channel;Secondly,based on the queuing theory,the channel capacity calculation model is constructed.The distribution rule of ship arrival and occupancy time is determined by using Origin software combined with the measured data.As long as the ship arrival rate and berth service rate are input,the key indicators of system and Service Level of port are obtained;Thirdly,Matlab software is used to compile the calculation procedure and system simulation,which solves the tedious problem of calculating the key indexes of the queuing theory calculation mode.The dynamic characteristics of the queuing system operation is analyzed intuitively and vividly,the importance is verified that improving the berth service rate to relieve the navigation pressure of the channel;Finally,this paper analyzes the passing capacity of the Dagusha Channel combining the calculation results.With the increase of the number of ships arriving at the port,the trend of ultra-large ships will bring greater navigation pressure.The study indicates that the passing capacity of the Dagusha Channel is saturated slightly in 2030,and the port service level is low,which will restrict the development of the port area.In order to ensure the development coordinated between channel and the port,this paper puts forward reasonable suggestions for channel planning and operation from the aspects of improving berth utilization,regulating traffic organization and navigation.rules of the channel.