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San Francisco Tunnel Los Bronces Access Protection

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal, Line 1 (60 m SL150)

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

Engineering study

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

General view, South Sector

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal Line (60 m SL150)

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal line 2 (114 m SL150)

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 1

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 2

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

General view, north sector

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

First works North Portal

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, North Portal

Miniera / Gallerie - San Francisco Tunnel Los Bronces Access Protection 2018

North Portal barrier (66 m, SL150)

 

Sistemi

 

Anno di installazione

2018

Situazione iniziale

The San Francisco River is one of the main tributaries of the Mapocho River that crosses the city of Santiago. This river originates and passes the surroundings of the mining site Los Bronces de Anglo American, located in the middle of the Andes Mountain Range. Within its route, the river crosses a tunnel that makes a bypass through the old tailings pond of the mining site.

In summer, this sector is prone to rainfall, producing landslides that block the entrance and exit portals of the tunnel, affecting the riverbed and generating a significant environmental impact when it comes into contact with the tailings pond material.

Descrizione

To protect the portals, a long-term plan has been designed. It begins with mitigation works for the landslides that occurred in the vicinity of the portal. For this purpose, an engineering project was initially developed to model the water flows in the streams and then implement a solution with multiple shallow landslide barriers protecting both portals of the tunnel. The barriers will avoid future environmental impacts due to the diversion of the river waters.

Paese / Regione

Chile

Cliente

Anglo American - Los Bronces

Progettazione:

Geotest

Contraente:

Pucará

Oggetto protetto

Cava / Miniera, Infrastrutture, Altri

Protezione dalla corrosione

GEOBRUGG SUPERCOATING

Il contatto locale

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / Stati Uniti Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / Stati Uniti

E-mail

John Kalejta
 

John Kalejta

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,KS 67226 Wichita / Stati Uniti

E-mail

Bob Lyne
 

Bob Lyne

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / Stati Uniti

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,OR 97302 Salem / Stati Uniti

E-mail