Monitoring Australia's Biggest Transport Project

作者：空间来源

‘Tested, tried and proven’ Leica instruments and software highlight the complex system monitoring the tracks and platforms during Central Station’s Sydney Metro upgrade.

图1.团队使用了28Leica Nova TM50监测站。

As excavation and construction barrel ahead on the Sydney Metro, Australia’s biggest ever transport project, a small and vital team of engineers have been quietly navigating the crowds and rumbling trains that define Sydney’s Central Station.

They are using state of the art equipment to monitor the tracks and existing infrastructure to make sure the massive works necessary to bring new Metro trains to the 120-year-old Sydney landmark, aren’t endangering the more than 100,000 daily riders that already shuffle through.

这项重要的工作被授予团队GLS Monitoring，之间的合资土地调查和澳大利亚地理位置. With an iconic building and the safety of so many riders on the line, the team knew the equipment had to be precise and sturdy enough to withstand the challenges of the busy station.

“谢天谢地，我对我们拥有的徕卡仪器真的很满意，”GLS监测的Szabolcs Fajcsi，Instrumentation和Monitoring Manager说。

“We don’t get the call often, but for example the contractor might ring up on a Sunday night saying, ‘OK, can you just please check the south end of track 16 to see if there are any movements on the track that will cause us to stop the trains?’”

“You have to be really, really quick, and ready to make a call before something bad happens,” he says. “But the instruments we use make it really easy to give a reliable answer so that when the client needs you to make the call – you can make the call.”

通过在分销商的合作伙伴的帮助下，GLS监控团队在其合作伙伴的帮助下开发了那些快速的呼叫Cr肯尼迪.

Fig 2. The team installed more than 4,500 prism reflectors across the tracks and station platforms.

它们构建了一个大量网络，包括28个Leica Nova TM50监控站，指向超过4,500个棱镜反射器，轨道和站平台上安装，以及各种各样的其他岩土传感器。

团队就业Leica’s GeoMoS监控软件在圆形时钟的数据中保持注意力，并提供警报，以防它检测到外部可接受限度的任何移动。

“GeoMoS is one of the more widely used pieces of software across the world, and we are familiar with its data structure and how to extract the information we need,” says Drew Coulthard, National Monitoring Manager with Land Surveys. “When it comes down to it, GeoMoS is tested, tried and proven.”

图3.在检测到移动移动时，地理位置监测软件在时钟和警报中保持着注意的眼睛。

Coulthard says the team needed proven precision from each instrument they chose for the project.

“Leica Nova TM50S的关键因素之一是他们的ATR（自动目标识别）能力，特别是考虑到这项工作所需的所有密集棱镜，”他说。

“例如，在赛道上，你可能会分开棱镜三米，但从乐器的视野中看起来非常接近 - 徕卡TM50在能够识别每个棱镜时，徕卡TM50非常优越。”他说。

“而TM50S的另一个主要因素是我们知道他们真的很棒的耐磨乐器，在一个非常艰难的环境中表现得很好。

“GLS Monitoring的Szabolcs Fajcsi非常了解中央站和团队的苛刻程度苛刻。

“嗯，我们有不断的维护，主要是因为在车站的轨道和尘埃上的所有这些棱镜，棱镜每两周左右弄脏，”Fajcsi说。“所以，有时候会发现一个时间框架尤其具有挑战性，你可以在轨道上跳跃并清洁和恢复这些目标，因为车站的繁忙是多么忙碌，”他说。

Fajcsi says the GLS Monitoring team have had very few issues with the Leica TM50 monitoring stations even with the adverse conditions. But, in the very few instances where they units have needed some attention it was a real plus having the CR Kennedy support available at short notice.

“通常很容易迅速，只要将单位带到Cr肯尼迪，在那里他们能够为我们提供快速校准或解决问题的解决方案，通常只有几天的周转，”他说。

Drew Coulthard with Land Surveys says the age and complexity of Central Station make it an especially exciting, but complicated, site to build at and to monitor. In other words, there is a lot of existing, vital, infrastructure and just about everything has moved over the years – even the tracks.

Fig 4. The Amberg GRP 1000 Rail Trolley provides automated track geometry monitoring.

That is why the team had CR Kennedy supply them with an Amberg GRP 1000 Rail Trolley, which they used to conduct a base survey of the real track conditions and geometry at the start of the project.

由于中央火车站的动态性质，仪器和监测经理Szabolcs Fajcsi表示，手推车仍然倾向于每月几次，超过一年进入该项目。

“我们一直在轨道八个轨道23的监测 - 这几公里的总轨道总共，”Fajcsi说。“如果轨道上存在某种维护，那么我们需要进行手推车调查，以便能够提供自动轨道几何监控。”

土地调查have purchased at least two more of the trolleys, seeing the value they can bring in projects across Australia including a major rail project for mining giant BHP in the Pilbara and a commuter rail job in Perth.

但Fajcsi很满意让他的焦点在中央驻地进行大规模建筑项目培训，以及他在确保它顺利进行的作用。

“这非常棒，”他说。“他们在实时轨道下做的挖掘量而没有任何中断交通真的只是惊人。”

“这是一个非常具有挑战性的environment to do monitoring in, and that just keeps us going.”

Cr肯尼迪提供的信息。