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Huallalolén, Seca and Ñilhue ravines

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Huallalolen barriers

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Huallalolen barrier installation

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Ring net, Huallaolen barrier

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Huallalolen barrier 1

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Huallalolen barrier 2

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Huallalolen barrier 3

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Secs barrier

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Nilhue barrier 1

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Nilhue barrier 2

Debris Flow & Shallow Landslide Protection - Huallalolén, Seca and Ñilhue ravines 2022

Nilhue barrier 3

 

System length

10 m - 20 m

 

Year of installation

2022

Initial situation

End of January 2021, the metropolitan area of Santiago endured heavy rainfalls of more than 116 mm. A phenomenon that had not occurred since 1933. This, plus the scarce vegetation in the mountains and a zero isotherm above 3,500 meters, activated several streams and gullies.

In the commune of Lo Barnechea the water affected homes, streets, roads, and infrastructure and caused emergency works.

Description

The solution consists of seven dynamic barriers of the VX-type installed in the three streams affected mainly by the floods.

  • Seca gully: 1 VX-80-H4 barrier 16 meters wide and 4 meters high
  • Ñilhue gully: 1 VX-160-H6 barrier 13 meters wide and 6 meters high and 2 VX-140-H4 barriers 12 meters wide and 4 meters high
  • Huallalolén gully: 3 VX-140-H4 barriers 18 meters wide and 4 meters high

The retention capacity of all seven ring net barriers is 6’900 m³.

Customer

Directorate of Hydraulic Works DOH

Other participating companies

Pucará S.A.

Protected object

Road, Residential area, Infrastructure

Corrosion protection

Galvanized, GEOBRUGG SUPERCOATING

Your local contact

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / United States Regional Manager Northeast

E-Mail

Saleh Feidi
 

Saleh Feidi

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / United States

E-Mail

John Kalejta
 

John Kalejta

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,KS 67226 Wichita / United States

E-Mail

Bob Lyne
 

Bob Lyne

Natural Hazards
Hydraulic Engineering
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / United States

E-Mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Natural Hazards
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-Mail

Tim Shevlin
 

Tim Shevlin

Natural Hazards
Geobrugg North America, LLC,OR 97302 Salem / United States

E-Mail