The construction of the future Santiago Metro Line 7 is one of the most significant engineering challenges today. As highlighted on the "Megaprojects" program on Canal 13C, this 26-kilometer, 19-station fully underground network will connect the districts of Renca and Vitacura in just 37 minutes, benefiting over 1.5 million people by 2028.
With 22% of the work completed and crucial milestones already reached—such as the connection of tunnels excavated from different fronts—the success of this mega-project depends on millimeter-precise ground control. This is where the work of Geosinergia becomes vital to the project.
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Deformation monitoring: A job of precision

During the episode, Enrique Díaz explained the fundamental role Geosinergia plays in this project, operating on two key fronts of the route: the start of the line in Renca and the eastern sector in Las Condes.

In these areas, the team is responsible for carrying out optical topographic monitoring. But what does this mean in practice?

When a tunnel is designed and built, engineering assumes that a certain level of ground deformation will occur. This movement is natural and depends on factors such as the diameter of the excavation and the specific characteristics of the soil. To ensure the safety of the work, project designers establish deformation thresholds; that is, maximum permitted movement limits.

Guardians of stability

Geosinergia’s work involves monitoring the progress of excavations, both on the surface and in underground sectors, by constantly measuring ground behavior. In the words of Enrique Díaz, the team acts as true "sentinels or guardians" of the project.

Their mission is to rigorously ensure that actual deformations remain within the magnitudes projected in the design. If optical instruments detect that movements are approaching the permitted limits, an immediate alert is raised. This allows builders to take timely construction measures, such as:
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• Reinforcing fortifications.
• Installing additional support.

Ultimately, this topographic monitoring is the process that assures the contractor and future users that construction is proceeding under the strictest safety standards. What Geosinergia does on Line 7 is the invisible, yet fundamental, support to guarantee the total stability of the project.

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We invite you to watch and learn more about this topic in the next part of the interview!👇

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