悉尼M1地铁线最后段开通延期 野生动物入侵触发系统问题

悉尼M1地铁线从Sydenham至Bankstown的最后一段（全长13公里）的开通日期因多重技术挑战而延期1。该段自2024年9月关闭至今已停运23个月，原定于10月中旬重新开放的计划未能按时实现1。运输部长John Graham表示，"在我们能够开放之前，确实有一些问题需要解决"1。

入侵检测系统的频繁误报成为当前的主要障碍1。包括朱鹭在内的野生动物进入隧道会触发这些高度敏感的警报系统，因此工程团队正在进行调试工作以减少虚假报警1。John Graham表示预计到9月底前能够提供更明确的开通进展信息1。

这段地铁线完成后将成为总投资达30亿澳元的M1项目的关键部分1。现有的45列列车在高峰期每4分钟发班一次，若要进一步加密至每3分钟发班需购置额外列车，而新车的交付周期约为3年1。

The completion of Sydney's M1 metro line has been pushed back as operators grapple with intrusions by wild birds and sensitivity problems in the detection system. The 13-kilometer final segment between Sydenham and Bankstown, which closed in September 2024, was originally scheduled to reopen in mid-October but remains offline after 23 months 1. Transport Minister John Graham acknowledged that "clearly some issues to resolve before we can open," indicating the intrusion detection system requires recalibration to reduce false alarms 1. Officials are expected to provide clearer progress updates by the end of September 1.

The technical complications stem from wildlife, including ibises, triggering the line's alarm systems. The current fleet of 45 trains operates at four-minute peak intervals 1, and expanding service frequency to every three minutes would require purchasing additional rolling stock with a lead time of approximately three years 1. Beyond the immediate reopening challenge, broader expansion plans are facing cost pressures, with the proposed Western Sydney International Airport rail line potentially increasing by over $1 billion, bringing its total investment to more than $12 billion 1. The M1 project overall represents a $30 billion investment 1.