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Debris Flow & Shallow Landslide Protection - RD242 Miribel-Lanchâtre 2023

Barrière amont VX140 avec vue sur le village de St Guillaume et le Trièves

Debris Flow & Shallow Landslide Protection - RD242 Miribel-Lanchâtre 2023

Event on 10 November 2022 that reached the road

Debris Flow & Shallow Landslide Protection - RD242 Miribel-Lanchâtre 2023

Aerial view of the solution implemented with erosion protection mat at the top, VX140 then VX080 barrier on the way down

Debris Flow & Shallow Landslide Protection - RD242 Miribel-Lanchâtre 2023

VX140 barrier, height 4 meters with angle to protect the upper edge cables from damage

Debris Flow & Shallow Landslide Protection - RD242 Miribel-Lanchâtre 2023

VX080 barrier, 4 meters high, sized to take the overflow from the upstream VX140 barrier

 

System length

12 m - 15 m

 

Year of installation

2023

Initial situation

A landslide with a volume of around 700 m³ started in 2018 in the upper part of a talweg upstream of the Road (RD242), due to the action of significant hydraulic inputs.

Since then, during each period of bad weather, debris has been carried into the talweg. In December 2022  200 m³ were spilled onto the road.

The road remained under constant threat of further flooding during bad weather.

Description

The upper area was stabilized with TECCO GREEN flexible facing and spike plates.

A VX140 barrier 4 m high provides the first level of retention, with an estimated retention volume of 225 m³.

A few dozen meters downstream, a second VX080 barrier will absorb the excess volume that has passed over the upstream barrier.

Customer

Grenoble Alpes Métropole

Contractor

Protected object

Road

Corrosion protection

GEOBRUGG SUPERCOATING

Engineering

Your local contact

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland Country Manager Ost- und Zentralschweiz, Liechtenstein

E-Mail

René Müller
   

René Müller

Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG,Industriestrasse 21,5200 Brugg / Switzerland Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-Mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Natural Hazards
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland Project Manager Inspection Services

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Switzerland Ticino Country Manager

E-Mail