Enabling rail asset capture quickly and safely

PROJECT: Capturing all the infrastructure of the Gotthard Base Tunnel for as built documentation
CUSTOMER: Grunder Ingenieure AG
产品:徕卡珀加索斯:两个
OBJECTIVE: Grunder Ingenieure AG was contracted to deliver a complete inventory and as built documentation of the Gotthard Base Tunnel without disrupting the ongoing construction

Grunder Ingenieure AG签订了合同，以提供完整的库存和Gotthard Base Tunnel的构建文件。使用Leica Pegasus：两个他们能够在短短几周内有效地捕获整个项目，而不会破坏正在进行的建筑，从而使所有工作利益相关者受益。该公司选择了Leica Pegasus：两个用于捕获新建的开放式轨道的基础架构安全有效地使工程师能够与最准确的表示形式合作。

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When the Gotthard Base Tunnel officially opened in June 2016 as part of the New Rail Link through the Alps (NRLA), a construction project 20 plus years in the making at 9.8 billion Swiss francs yielded the world’s longest and deepest traffic tunnel. At 57 kilometers long and with a rock overburden of 2,300 meters, the tunnel increases the total transport capacity across the Swiss Alps while reducing passenger travel time between northern and southern Europe by one hour. With minimal gradient and wide curves, the route is also a flatter, lower-level journey at only 550 m above sea level. The whole tunnel system measures a total of 152 kilometers, plus almost 50 km of new built outdoor tracks.

When Grunder Ingenieure AG, a leading Swiss engineering firm specialising in rail surveys and long-time user of Leica Geosystems solutions, was sub-contracted by the Alptransit Gotthard AG, the firm knew it would be a challenging task but one for the history books. One of the main tasks, before the tracks open for the test operation, was to capture all the infrastructure of the tunnel for as-built documentation.

"There are several stakeholders working on the overall project, and we were tasked with registering the entire infrastructure to collect for the infrastructure database of the Swiss Federal Railways. All these users can now access this information," said Gilbert Roulier, Grunder’s director of imagining, laser scanning and mobile mapping. "Entering the under-construction tunnel and outdoor tracks also presented organising challenges that we needed to account for with our engineers and surveying instruments."

The firm selected the Leica Pegasus:Two to capture the entire infrastructure of the new built open tracks safely and efficiently. In combination with Leica Geosystems total stations, Grunder was able to provide a complete database of 3D imagery and point clouds covering the rails, signage, posts, electrical lines, and further installations and structural elements.

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