AGENT ACCESS FR EN WHO ARE WE ? CONSULTANCY SOFTWARE COURSES SCIENTIFIC ACTIVITIES CAREERS REFERENCES Home >References >La Bassée Pilot Site – Flood storage site on the River Seine Partager Type of structure Tunnels and underground structures Maritime and waterways structures Soil and rock slopes, natural hazards Civil engineering works Retaining structures Earthworks Soil reinforcement and dynamics Highways and railways infrastructures Buildings and industrial installations Country Switzerland Jordan France Tunisia Nepal Luxembourg Algérie Monaco Morocco China Chile Sénégal Australie Vietnam Colombia Belgique Cameroun République du Congo Ivory Coast Turquie Guinée Equatoriale Emirats Arabes Unis Pakistan Yemen Saudi Arabia Tchad Madagascar Koweït Guyane Française Croatie Azerbaïdjan Lebanon Qatar Ethiopia Peru Nigeria Egypt India Gabon United Kingdom South Africa USA Maldives Germany Gambia Oman Bahrain Italy Bolivia La Bassée Pilot Site – Flood storage site on the River Seine The La Bassée pilot site is the first of 9 flood storage sites on the River Seine, which will eventually store 55 Mm³ of water and limit the impacts of floods like the flood in 1910 in the Paris region. This project is located upstream of the confluence of the River Seine and the River Yonne, between the communes of Montereau-Fault-Yonne and Bray-sur-Seine. The pilot site alone will be capable of storing 10 Mm³. It consists of 7.9 km of dykes, 2 to 3 metres high, of a 40 m³/s pumping station and of outlet structures enabling the site to be drained by gravity once the flood has passed. The project includes various actions aimed at improving and enhancing the ecological context of the Bassée valley. In partnership with SETEC HYDRATEC, Terrasol’s assignment involves carrying out all the geotechnical studies for the design of the dykes, together with their connections to the pumping station and ancillary structures. This assignment is part of a comprehensive project management mission, from preliminary studies to commissionning of the works. Two main topics were addressed during the study phase: the first, a purely geotechnical topic, consisted of analysing and optimising the dykes, whereas the second topic focused on studying their constituent materials. Terrasol’s involvement from the very beginning of the project enabled the alignment to be adapted to limit the impact on neighbouring areas (railway line, bridge pier, etc.), and the ground investigations to be optimised by cross-referencing geophysical and geotechnical surveys along the entire length of the alignment. Furthermore, through studying the stability of the dykes (punching, settlement, stability against major sliding and hydraulic checks), judicious adjustments could be proposed for the construction measures to be planned along the alignment (slopes, relief wells, cut-off walls, etc.). Lastly, Terrasol assisted the Owner in seeking out materials, by defining the requirements, potential procurement sources, temporary storage facilities and by providing assistance and support in discussions with other public stakeholders in the Paris region. Terrasol’s achievements Geotechnical summary, combining geophysical and geotechnical surveys Dyke design Analysis of the materials CHARACTERISTICS PERIOD : 2017 – On-going CLIENT : EPT BASSIN SEINE GRANDS LACS PARTNERS : Setec Organisation and Setec Hydratec MAIN SPECIFICATIONS : 8 km of dykes DOWNLOAD THE BROCHURE To go further OPQIBI QUALIFICATIONS RESOURCES ACTIVITIES Subscribe to our newsletter I would like to subscribe to the Terrasol e-newsletter FR EN Visit the group website © terrasol 2017 - Sitemap - Legal notice Follow us CONTACT US