摘要
极端水位下长江中游航道通航条件受到影响,通航管理部门通常采取必要管制措施,继而船舶交通流宏、微观特征发生变化。以长江中游太平口水道发生极端低水位,采取上下行间歇性封航措施为例,结合线性速度-密度关系下的船舶交通波模型,解释封航发生及解除后船舶交通流的集结、消散过程。结果表明:因封航产生的船舶交通流最大排队长度、阻塞时间与封航时间成正比。通航管理部门需制定科学详尽的通航计划,最大程度地减小封航影响。
Navigation condition in the middle reaches of Yangtze River is easy to be changed under extreme water levels,and traffic control measures may need to be taken by the navigation administrative departments.These measures have great impact on the macro and micro characteristics of vessel traffic flow.Taking Taipingkou waterway under extreme low water level for example,the traffic control measure is upstream and downstream closure of navigation intermittently.Combining with vessel traffic wave model under linear relationship between speed and density,the gathering and dissipation process of vessel traffic flow before and after closure was elaborated.The study indicates that the maximum queue length and blocking time caused by closure of navigation is positively proportional to the time of closure of navigation.It is necessary for the navigation administrative departments to formulate scientific and detailed plan to minimize the effect of closure of navigation.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2017年第3期103-107,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
交通运输部软科学研究项目(2015322811270)
关键词
交通运输工程
极端水位
船舶交通流特征
交通波
最大排队长度
阻塞时间
traffic and transportation engineering
extreme water levels
vessel traffic flow characteristics
traffic wave
maximum queue length
blocking time
作者简介
卢升荣（1986-），男，江西吉安人，博士研究生，主要从事交通运输规划与管理方面的研究。E-mail：allanlusr@whut．edu．cn。
通信作者：刘瑶（1986-），女，湖北武汉人，博士，主要从事物流、交通运输规划与管理方面的研究。E-mail：liuya01323@foxmail．com。
