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San Francisco Tunnel Los Bronces Access Protection

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal, Line 1 (60 m SL150)

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

Engineering study

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

General view, South Sector

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal Line (60 m SL150)

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

South Portal line 2 (114 m SL150)

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 1

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, South Portal line 2

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

General view, north sector

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

First works North Portal

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

Work in progress, North Portal

Hangmuren- und Murgangschutz - San Francisco Tunnel Los Bronces Access Protection 2018

North Portal barrier (66 m, SL150)

 

Systeme

 

Systemlänge

- 240 m

 

Installationsjahr

2018

Situation

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.

Massnahme

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.

Land/Region

Chile

Kunde

Anglo American - Los Bronces

Planer

Geotest

Generalunternehmer

Pucará

Geschützte Objekte

Steinbruch / Bergbau, Infrastruktur, Sonstige

Korrosionsschutz

GEOBRUGG SUPERCOATING

Ansprechpartner

René Müller
   

René Müller

Country Manager Western Switzerland

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Fernüberwachung
Geobrugg AG,Industriestrasse 21,5200 Brugg / Schweiz Country Manager Western Switzerland

E-Mail

Olivia Sartorius
   

Olivia Sartorius

Project Manager Sales Eastern and Central Switzerland

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Fernüberwachung
Geobrugg AG Project Manager Sales Eastern and Central Switzerland

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Country Manager Southern Switzerland

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Fernüberwachung
Geobrugg AG,Via Brusada 5,6933 Muzzano / Schweiz Country Manager Southern Switzerland

E-Mail