2023-12-21
Construction diary: second niche completed
The second niche, designed to frame the entrance of the new side tunnel, has been successfully finished just before the holiday break. Measuring 40 meters in length and 3 meters in width, its completion marks a significant milestone in the construction progress.
Following the holiday break in January, the upcoming phase will involve drilling several monitoring boreholes for the PRECODE project. PRECODE aims to explore the rock mass's response to various excavation techniques by comparing conventional methods to low-impact operations. To achieve this, monitoring of the rock mass surrounding the initial 15 meters of the new side tunnel will occur before, during, and after excavation.