城市地铁网络拓扑结构脆弱性评价

Evaluation of Urban Metro Network Topological Structure Vulnerability

为降低突发事件对城市地铁网络系统(UMNS)造成的影响,提出UMNS拓扑结构脆弱性评价方法。研究随机和蓄意移除地铁车站和区间对UMNS连通性造成的故障规模。实证分析表明:随机移除地铁车站造成的故障规模明显小于蓄意移除的;随机移除地铁区间造成的故障规模明显大于蓄意移除的;移除地铁车站造成的故障规模明显大于移除地铁区间所造成的。研究结果表明:UMNS对车站所受蓄意攻击具有脆弱性,对区间的蓄意攻击具有鲁棒性;在运营管理中,应重点保障大型换乘车站的正常运行,防止其遭恶意破坏而造成大规模故障。

A topological structure vulnerability assessment approach for UMNS was developed in order to minimize impact of incidents on the system. Failure scale of stations and sections random failure and target attacks was evaluated. The results show that UMNS is more vulnerable to target attacks on stations than random failure on stations, but UMNS is less vulnerable to target attacks on sections than random failure on sections, and UMNS is more vulnerable to station failure than sections. It could be concluded that more resources should be put on big transfer stations in UMNS operation management to avoid large scale impacts.