推动首都前进

With 90 per cent of the nearly 6 million population in the city using cars, a sustainable public transportation system was desperately needed. The current public transportation system, though, was close to nonexistent with no metro and no bus lines travelling inside the city. In 2014, ground was broken to begin the Riyadh Metro Project with an ambitious due date of late 2018.

The city’s first rail metro will have six lines with 85 stations covering 176 kilometres with about 40 per cent of the lines underground. The metro will be able to move up to 3 million passengers a day. All together, the project comes in at an approximate 20.1 billion Euros.

寻找常见的全球解决方案
To build one of the largest infrastructure construction projects in the world, it took a multicultural team. Three multinational consortiums are working together on the project, combining companies from around the world.

FAST Consortium, led by FCC Construccion from Spain with Freyssinet of Saudi Arabia, Atkins of England, Alstom and Setec from France, Samsung C&T from South Korea, Typsa also of Spain, and Strukton of The Netherlands, was contracted to construct and design Lines 4 (Yellow), 5 (Green) and 6 (Purple) of the metro. The project oversees 64.6km of the rail track, 29.8km of viaducts and 24 stations at an overall cost of 7.1 billion Euros.

Construction of these three lines is overseen by three partners in the Consortium: FCC Construccion, Samsung C&T and Strukton. Each line has a dedicated survey team with all using solutions from Leica Geosystems.

负责第6行（紫色）的Strukton负责捕获用于地形调查的数据，拟合检查，计算和现有实用程序的清单。专门从事铁路系统和民事基础设施的技术公司还负责建筑和偏差监测的遗物。

斯特鲁克顿调查经理克莱门斯·蒂尔（Clemens Tierie）说：“尽管这些是我们的典型任务，但该项目的规模对我们来说是新的。”“只有在第6行，我有28支拥有10多个国籍的球队。”

With such a diverse mix, Tierie needed to find common solutions familiar to all the team members. He found that in Leica Geosystems. Using a combination of total stations, GNSS receivers, and construction lasers and levels combined with measurement software, the Strukton team is well on its way to completing the project on time and on budget.

“Surveying is teamwork, and surveyors from all across the world know and appreciate Leica Geosystems solutions,” said Tierie.

Racing against the elements
With an ambitious deadline of just more than four years for such a large project, Tierie knew the team couldn’t allow for any disruption.

首先，在沙漠条件下，在50摄氏度以上的温度下工作，他们需要能够信任这些乐器来承受。

“Due to our time schedule, there have been many days we’ve had to work straight through. We couldn’t wait for evenings or cooler temperatures,” said Tierie. “With the durability of our Leica Viva TS15 total station, we were able to perform high-accuracy stakeouts at any part of the working day. This enabled us to ensure everything was ready for construction to start on time.”

使用徕卡Geo办公室和无穷软件,team was able to instantly transfer reality capture data back to the office from the field for quicker processing. This way, if there were extra measurements needed, the team could do so while on site without having to return later.

The team also used the Leica Rugby rotating laser and construction levels to perform accurate as-built checks. With almost all of Leica Geosystems instruments able to operate from -20 to 50 degrees Celsius, the Strukton team is on schedule to finish the project.

接下来，作为该国最大的城市，在过去十年中，该城市的公用事业在过去的十年中取得了前所未有的增长，造成了复杂的基础设施挑战。在建造利雅得地铁线时，团队必须保持警惕，不要干扰上面运行的任何埋藏的公用事业或线路，很多时候不知道这些公用事业的位置。Leica GS14 GNSS智能天线与Leica GR10 GNSS参考站接收器相结合，Tierie和他的团队能够精确定位和解释Rogue Utilities。节省宝贵的时间并避免危险的公用事业罢工，团队能够更快，更安全，更有效地工作。

Tierie说：“由于这些乐器的精确定位能力，我们能够在项目的早期阶段通知我们的设计师，以便公用事业所在的位置，因此他们可以将此新信息纳入地铁设计中。”

最后，持续不断的建筑将道路和建筑物放在不稳定的环境中。随着重型机械的振动，例如在挖掘切割和覆盖隧道的沟渠时，这些城市资产处于不均匀和不安全定居点的危险。结合其测量任务，测量师还负责监视正在进行的建筑及其对周围地区的影响。

Tierie说：“借助Leica TM50总站的准确性，我们能够迅速确定施工操作是否对周围结构产生负面影响。”“改善了机组人员和社区的安全性，我们的工作在利雅得得到了很好的接待。”

The team has future plans to supplement the monitoring process with Leica GeoMoS monitoring software for instant alerts to deviations in the structures.

Worldwide support
在国际环境中，例如利雅得地铁项目的建筑工地等国际环境中，也许更为重要。

Tierie says he arranged the project in Saudi Arabia through a combined effort of Leica Geosystems locations. His former Leica Geosystems network in The Netherlands with support from the Dubai and Switzerland locations and the local dealer in Riyadh all pitched in to make the project possible. Since moving to the desert nation at the beginning of the project in 2014, he has relied on the excellent support he receives from the many locations of Leica Geosystems.

“The quality of Leica Geosystems solutions is great, but the support for me is the biggest benefit. I’ve received very good support from Leica Geosystems Netherlands, Dubai and the local dealer SITML,” said Tierie. “Due to the Active Customer Care support, we can quickly and efficiently handle any problems we encounter on site.”

Written by Monica Miller Rodgers