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Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

RXE-5000 ringnets protecting the village of La Roche-Blanche (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

RXE-5000, 6 meters high, 36 meters long in three fields (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

RXE-5000, 6 meters high, 84 meters long (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

View up to the unstable limestone rockface (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

View of the rockface and the RXE-5000 behind the houses, almost invisible (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

View of the RXE-5000 protecting the village of La Roche-Blanche (photo credit: Pierre-Yves Giraud, Géop)

Ochrona przed obrywami skalnymi - La Roche-Blanche 2020

View of the two fold protection systems (photo credit: Pierre-Yves Giraud, Géop)

 

Zastosowane systemy

 

Dlugosc systemu od

36 m - 84 m

 

Rok Instalacji / Montazu

2020

Sytuacja początkowa

The rockfall problem at La Roche-Blanche came back to memory in Summer 2019 when large blocks detached from the limestone cliff above the village of La Roche-Blanche. They stopped in the nearest garden without causing much damage. Subsequently, the village ordered a survey of the rockface. The conclusion of this survey on the 22nd of December 2019 detailed the presence of a large fracture with the potential of imminent failure. A total of 1700 m³ was estimated to potential fail. It was decided to evacuate temporarily the residents living closest to the rockface, a tough decision to take just before Christmas.

Opis zastosowanego rozwiazania

The authorities opted for a two-fold solution with a custom-made rockfall curtain just under the steep slope and a rockfall protection barrier RXE-5000 beneath it. 

The construction of the rockfall curtain had just been completed, and the posts of RXE-5000 set, when most of the unstable volume, 1500 m³, collapsed in mid-February. The rockfall curtain held back most of the material, nevertheless some parts of the ringnet barrier were damaged. After replacing parts, the installation was finally completed in March 2020.

Wykonawca

Chroniony Objekt

Building, Residential area

Ochrona przeciwerozyjna

GEOBRUGG SUPERCOATING

Projektant

Osoba kontaktowa na miejscu

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / USA Regional Manager Northeast

Formularz kontaktowy

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / USA Regional Manager California

Formularz kontaktowy

John Kalejta
 

John Kalejta

Regional Manager Central US

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / USA Regional Manager Central US

Formularz kontaktowy

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / USA Regional Manager Southeast

Formularz kontaktowy

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Zagrożeniami naturalnymi
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

Formularz kontaktowy

Tim Shevlin
 

Tim Shevlin

Sales Director

Zagrożeniami naturalnymi
Geobrugg North America, LLC,Salem OR 97302 / USA Sales Director

Formularz kontaktowy