内河航道局部缩窄段交通运行状态仿真分析

Simulation analysis of traffic performance for partial constricted section in inland waterway

为分析内河航道局部缩窄段交通运行状态,根据航道单线交替通航特征设计仿真模型,分析不同条件下缩窄航段的交通运行状态及通过能力。仿真结果表明,船流量大小和方向分布影响缩窄航道的交通运行状态,2个方向船流量差异较大时船舶集中通行有助于提高通航效率,但会增加部分船舶的延误;缩窄航段的通过能力随缩窄段的长度增加而减小,但当缩窄段长度增加到一定值后,航段的通过能力接近某一极小值。实践中可根据航运需求,合理进行交通组织、安排航道整治方案。

To analyze the traffic performance of partial constricted section in inland waterway,we design a simulation model according to the channel characteristics of single-line alternating navigation and analyze the traffic performance and capacity of constricted section under different conditions.The results indicate that the size and directional distribution of vessel traffic flow affect the traffic performance:centralized dispatching of vessels when the difference of traffic flow between two directions is large,is beneficial to the improvement of the traffic efficiency,but will increase the delay of some vessels;the traffic capacity decreases with the increase of the length of the constricted section,and approximates a minimum value when the length increases to a certain value.In practice,traffic organization and waterway regulation schemes can be arranged reasonably according to shipping demands.