In the area of the portal of the VA2 tunnel of the Alto Maipo project, rockfalls caused damage to the surrounding infrastructure and interruptions in operations. It was urgently necessary to find a solution that would allow working in a safe manner.
To retain rocks up to 1000 kJ of energy, Geobrugg proposed the construction of an RXE-1000 rockfall barrier with the following characteristics.
Engineering and placement of the barriers were carried out by Swiss company Geotest.
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