安全地向前移动

帕丁顿车站（Paddington Station） - 全世界著名的不仅是其创作者Isambard Kingdom Brunel，而且还以一只小型果酱爱熊而闻名。每天平均有26,500名乘客从Paddingtion Station行驶。尽管具有维多利亚时代的优雅和富丽堂皇，但仍制定了计划建造直接在历史地标下方的全新地下车站。这个基础设施项目是由Crossrail进行的，是欧洲最大建筑项目的一部分。新车站将被称为Crossrail Paddington站。

Since July 2011, plans have been developed by Crossrail to complete a new underground network for London. In August 2011, working as a joint venture on behalf of Crossrail Limited, Costain Skanska was awarded Crossrail contract 405 to complete the complex £14.8 bn rail project. This project is creating a major new railway line, stretching 118 kilometres (approx. 73 miles) from Reading and Heathrow to the west of London, to Abbey Wood in the east. It will also pass directly underneath central London. The new network will now connect seven brand new mainline underground stations, all of which are important interchanges between existing Network Rail services and the London Underground. One of these new stations is the Crossrail Paddington Station.

细心的计划以监视上方和下方的结构
直接在伦敦的心脏地带工作有许多挑战。这座城市拥有超过800万人的家园，其地下将处理每年十亿的旅程。帕丁顿的新越野站不仅被现代建筑包围，而且还被历史悠久的建筑所包围。它还位于伦敦市中心密集的区域，其管道，电缆和下水道迷宫，使其成为一个极其复杂的建筑项目。由于伦敦被认为是一个全球城市，因此即使对于一个大规模的项目，它也必须不加干扰。因此，Crossrail站被建造为四层楼高的自上而下结构，在下面的开挖侧面进行时，地面上方有双向实时交通。

随着所有这些挖掘，伦敦中部松散的污垢可能会不均匀地定居，并可能导致结构倾斜或严重的裂纹。不断监测该地区的建筑物对于避免可能的损害至关重要，这就是Leica Geosystems产品和解决方案在通过监测结构和地球沉降程度来确保这条新铁路线的成功方面发挥重要作用。亚搏彩票手机版下载

Robotic total stations observing Paddington 24/7
Costain-Skanska决定使用52 Leica TM30实施实时监控解决方案，尤其是用于监视设计的总站，以及在Paddington地区及其周围的所有类型的棱镜中超过1,800多个监测棱镜。亚博5分钟快三设备附在建筑物外部的各个关键位置上。高度准确的3D数据是从总站收集的，这些数据衡量了整个地区建筑物中战略性放置的各种棱镜的关键参亚博5分钟快三考点。这些测量值每天大约每天8,500点，每天进行。At the recent phase of the project which was called “the bulk dig”, the data capture for the majority of the area’s total stations takes place at six hour intervals each day, after which the data is sent to be processed with Leica GeoMoS, which sends the results to the web portal before they are distributed to the construction team. The use of Leica Geosystems monitoring sensors, software and communications is vital to the Crossrail project, as these accurate measurements provide information on any variations in structures caused by earth movement and minimise risks, not only to the buildings themselves, but also to public safety.

实时的自动数据处理
Such projects require constant observation, repetitively measuring the same routes and reference points several times daily throughout the entire project’s life span. By using robotic total stations such activities can be done automatically and data is directly transferred for processing using Leica GeoMoS, GeoMos Adjust and GeoOffice software.

Three interlinked servers are used to run the Leica Geosystems software programs at the Crossrail construction site. The software is used to detect and analyse ground movement and the deformation of buildings above and below the site, and also helps to speed up and simplify the processing of real-time data collected by the total stations by up to 90 %, allowing data to be available from field to issue quickly. This software solution for the new Crossrail Station is entirely from Leica Geosystems, and is the largest of its kind existing anywhere in the world. Engineering Survey Manager for Constain-Skanska Joint Venture, Steve Thurgood, reports
“软件系统必须非常规定和程序，以控制项目的质量和重复性，同时也可以进行环境和施工阶段变化的动态变化。我们的操作不停地运行，我们管理软件系统，以最大程度地减少可能发生的任何故障。这两个软件系统都记录了与惊人的准确性和精确度相关的惊人数据。”

Leica Geomos软件解决方案是一个用于数据生成的全自动系统。它使用统计分析提供自动处理和评估，并使用易于理解的图表将新数据与原始基本模型进行比较。该软件还不断更新变形分析和网络调整，并使用44至49 *总站收到的大量实时数据进行调整，从而使高度准确的数据很快。亚博5分钟快三

处理数据后，还通过网络调整软件进行了优化，以进行协调的几何形状，地形和准确性。如果任何数据都不在先前收集的数据的±10 mm球体内（通常不年龄在大约六个小时的情况下），则认为这是不正确的。监督操作的工程测量师评估并将数据与预定义的数据参数进行比较，并快速决定是否需要采取措施。

与现场施工团队一起显示处理后的数据的协调有助于大大完成技术工作而不会受到干扰。Geomos不仅通过显示实时数据来增加生产率的正常运行时间，而且还通过在将数据发布给团队之前不断验证数据来简化工作流程。

Dedicated teams and reliable equipment
Dedicated round-the-clock operation and maintenance teams actively maintain the entire Crossrail project’s Leica GeoMoS software solution and also clean and maintain the 42 to 49 total stations and over 1,800 prisms. The total stations take six people to run plus an additional part time support staff of five persons in the field. All involved total stations are serviced and maintained at Leica Geosystems Service Centre in Milton Keynes.

“ Crossrail的座右铭是'向伦敦前进'。在我们的工程测量团队中，他们运行精确的级别计划和最大的Leica Geosystems在全球统一调整了总站计划，我们采用了一个补充座右铭，因为我们必须取得成功进行“移动测量以进行监视前进”。然而，如果没有Leica Geosystems及其供应链合作伙伴的持续支持，以上都是不可能的。

Written by Natalie Binder