建造the Venice of the North

Author:Karina Lumholt

Facing the Baltic Sea to the East, the Swedish capital of Stockholm is built on 14 islands in Lake Mälaren. Gamla Stan in the old town of the city centre is one of the best preserved medieval cities in Europe. The many waterways and bridges over the canals are characteristic features of Stockholm – often referred to as在水上的美丽或简单北部威尼斯。

该地区面临重大挑战，改善基础设施的需求变得越来越紧迫。每年约有30,000人搬到首都，相当于每天两辆公共汽车，斯德哥尔摩目前是欧洲发展最快的大都市地区之一。首都的运输系统是脆弱的，因为只有一个南北的联系贯穿了这个具有巨大的文化和自然遗产的城市。

在地下绕过斯德哥尔摩的交通瓶颈

斯德哥尔摩旁路项目或förbifarten是一个新的21-kilometre highway越过瑞典首都，这是瑞典有史以来最大的基础设施项目的一部分。这个27亿欧元项目的计划于2006年开始，初步建设于2014年开始，计划于2026年开放。

已经采取了重大预防措施来保护位于地面上方的景观和周围环境。为了保护斯德哥尔摩的宝贵性质和历史遗址，已决定建造大致建造通过隧道总计21公里的18公里。在Mälaren湖下，建筑将有一个深度下方有65米the water body. 80 per cent will be financed by a congestion charge and 20 per cent by government funding, but the overall utility value is calculated to be paid back from the resulting economic development and reduced travelling time. With an estimated passing of 145,000 vehicles per day, the journey time through the city is calculated to be reduced to 15 minutes.

从南部的小动物库尔瓦（Kurva）开始，在北部的哈格维克（Häggvik）结束，一旦斯德哥尔摩旁通项目完成，它将是仅次于东京山门隧道（Yamate）隧道的世界第二大隧道。

建造at Kungens Kurva

Leica Geosystems的长期客户，Skanska Sverige AB，已赢得了1260万欧元的合同，用于建造隧道的南入口，并将其连接到小动物Kurva的E20高速公路，Scandinavia最大的购物区和瑞典最繁忙的高速公路。这个备受瞩目的项目非常关注安全性，并且不得不减速流量超出必要的速度。

Pontus Holmberg works as chief surveyor for Skanska Sverige at Kungens Kurva. Holmberg is managing field surveyors and the site fleet that mainly consists of drillers, excavators and dozers from different contractors, many of them equipped with machine control solutions from Leica Geosystems. Holmberg works withLeica ConXto transfer model files to the machines and the field crew working on site.

“When working with different contractors on a site like this, it is important that all are working with the latest updated files,”Holmberg explains.“ Leica Conx可以帮助我实时跟踪机器，并实时将文件传输到机器上，以便每个人都在同一页面上。”

在该站点上工作的Epiroc Smartroc T35钻机配备了3D machine control solution that is tailor-made for Epiroc SmartRoc by Leica Geosystems并与Epiroc的HNS传感器系统接口。

钻机遵循数字定义的图案，以钻入岩石的孔以进行爆炸。在工作地点周围的两条高速公路上停止了交通，每天上午10点进行岩石地下的爆炸。或下午2点爆破是在缝合在一起的旧卡车轮胎地毯下进行的，以避免岩石掉入两条道路上。

“Two wheel loaders are standing ready at each side to clear the roads if rocks unintentionally fall on the highways making sure that the roads are blocked for a period of time as short as possible,”Skanska Sverige项目经理Dana Matti解释说。

Staying connected

Nicklas Gustafsson, owner of the companyGranskogens Gräv，是现场工作一年半的承包商之一。古斯塔夫森使用新的Leica MCP80现场机器控制面板，他对改进感到满意。“较大的屏幕更容易阅读，并且按钮得到改进，因此这是一个很大的优势，”says Gustafsson.

古斯塔夫森（Gustafsson）解释说，这是一个艰难的地下岩石和高地下水位，当在瑞典最繁忙的城市地区建造时，重要的是要拥有可靠的技术解决方案来最大程度地减少停机时间。

“Solutions from Leica Geosystems help us staying connected with the site office and make sure that we have a flexible dataflow to support the workflows on the job site。我已经在Liebherr 926紧凑型挖掘机上使用Leica Geosystems的机器控制解决方案工作了四年,” Gustafsson explains. “我在线上ConX在一天的大部分时间里，并直接从面板上接收我的参考文件。”

解决方案from Leica Geosystems are key in the multiple stages of constructing interchanges, tunnels and temporary harbours for this big project. Machine control solutions, total stations, prisms and scanners from Leica Geosystems are some of the many products that are needed for a fast and efficient construction of projects at this scale.