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San Francisco Tunnel Los Bronces Access Protection

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal, Line 1 (60 m SL150)

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

Engineering study

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

General view, South Sector

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal Line (60 m SL150)

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal line 2 (114 m SL150)

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 1

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 2

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

General view, north sector

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

First works North Portal

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, North Portal

Laves torrentielles et coulées de boue - San Francisco Tunnel Los Bronces Access Protection 2018

North Portal barrier (66 m, SL150)

 

Systèmes

 

Longueur du système

- 240 m

 

Année d’installation

2018

Situation de départ

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.

Description

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.

Client

Anglo American - Los Bronces

Ingénierie

Geotest

Entrepreneur

Pucará

Objet protégé

Carrière / Mines, Infrastructure, Autres

Protection anticorrosion

GEOBRUGG SUPERCOATING

Votre contact local

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / Etats-Unis Regional Manager Northeast

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Saleh Feidi
 

Saleh Feidi

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Ingénierie Hydraulique
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / Etats-Unis

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John Kalejta
 

John Kalejta

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Ingénierie Hydraulique
Geobrugg North America, LLC,KS 67226 Wichita / Etats-Unis

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Bob Lyne
 

Bob Lyne

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / Etats-Unis

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Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Risques naturels
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

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Tim Shevlin
 

Tim Shevlin

Risques naturels
Geobrugg North America, LLC,OR 97302 Salem / Etats-Unis

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