GEOHAZARD - FOLLOW US

Language
Englishen
United States
myGeobrugg

Registration

New at myGeobrugg?

As a registered myGeobrugg user you have extended access to downloads, to our dimensioning tools and to our events.

Register now
A company of the BRUGG Group
United States
Alto Maipo Underground 2016 - Geobrugg Alto Maipo Underground 2016 - Geobrugg
Alto Maipo Underground 2016 - Geobrugg Alto Maipo Underground 2016 - Geobrugg
Alto Maipo Underground 2016 - Geobrugg Alto Maipo Underground 2016 - Geobrugg
Alto Maipo Underground 2016 - Geobrugg Alto Maipo Underground 2016 - Geobrugg

Alto Maipo Underground

   Share
Place
San Jose de Maipo RM
Country/Region
Chile
Year of installation
2016
Customer
AES GENER
Protected object
Quarry / Mine, Other
Systems
MINAX® 80/4, MESHA®
Corrosion protection
GEOBRUGG SUPERCOATING®
Initial situation

The Alto Maipo project consists of a hydroelectric plant which includes five high mountain intakes, 70 kilometers of tunnels at an average depth of 800 meters, two cavern power plants - Alfalfal II and Las Lajas- with a combined capacity of 531 MW and 17 kilometers of high voltage lines.

The relevant civil works consider 70 kilometers of tunnels excavated in solid rock, at an average depth of 800 meters. Its size is defined by the flow rate to be transported and the minimum dimensions required for the operation of the excavation machinery. The tunnels will conduct the water under pressure and at low speed, losing very little energy until it reaches the machine caverns.

Due to the mountain range area rock bursting problems have been registered. The require fortification in order to protect both human lives and the machinery necessary for the development of a tunnel.

Description

For safety reasons MINAX® 80/4 mesh have been implemented: In order to provide the necessary energy absorption capacity in case of rock bursting that could occur due to the geological conditions of the tunnels of the Alto Maipo project.

At the same time, in order to optimize the fortification operation and safeguard the integrity of the workers, the MESHA® device has been implemented. The nailing is carried out fully mechanized.

Your local contact

Erik Rorem
Erik Rorem
Business Development Manager Geobrugg North America
Mining / Tunnels
Geobrugg North America, LLC
22 Centro Algodones
Phone +1 505 690 7144

Contact form