Artouste, France: Rock fall

    Solution ID
    Description of solution
    Summary (Challenges; Objectives)

    The hazard at Artouste is caused by rockfall, sourced from both exposed rock ledges and loose blocks resting on the steep till-covered slope. The site is adjacent to the hydropower dam of Artouste, where the RD-934 road descends in sharp turns from the height of the reservoir level to the base of the dam. The forest has a protective effect for smaller blocks, but rocks often hit the road. In 2013, a fatal accident occurred when a passing car was hit by a falling rock.

    Through the H2020 project PHUSICOS wooden structures designed to prevent the release of rocks and to stop released rocks before they reach too high a velocity have been implemented. 

    Technical characteristics

    The implemented NBS interventions consist of different structures made by wood and/or local stones. The solutions rely on active measures (manual stabilization and/or timber structures) to stabilize the source areas and passive measures (mixed wood and/or stone structures) to slow down and/or divert rocks in their trajectories enhancing the protective role of the forest.

    Success factors / lessons learnt

    Co-benefits:

    • Large upscaling potential
    • Economic gain, through less need for repair of the road, and the less need for maintenance compared to traditional engineered measures
    • Local jobs with construction of the measures, with more to come regarding potential for upscaling
    • Reduced fear among the users of the road, and more secure transport of goods and people, also important for the tourist industry of the area
    Location Latitude
    42.8831000000
    Location Longitude
    -0.4023710000
    Keywords
    Ecosystem (s) impacted
    Woodland and forest
    Hazard(s) concerned
    Rockfalls
    Other challenges
    Infrastructure
    Job creation
    Exposition
    Exposed assets
    Roads
    Actors
    Organizations involved in the implementation of the action
    • The wooden structures for rockfall protection have been implemented through the H2020 project PHUSICOS.
    • NBS actions in the Pyrenees demonstrator case site are organized through the Consorcio de la Comunidad de Trabajo de los Pirineos (CTP). However, the individual interventions are proposed and organized by different regional organizations, on both the Spanish and the French side
    Temporal aspects
    Design life time of the action
    Don’t know
    Implementation time of the action
    Between 2 and 5 years
    Others
    Is it possible to transpose this action in a different context?
    Yes, it is easily transposable
    Pictures
    Risk reduction
    Hazard
    +
    Exposure
    +
    Feasibility
    Environment
    Society
    Economy