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After the Loire River flood in February, the roadway had subsided in places in Ancenis-Saint-Géréon (Loire-Atlantique). To ensure that its sandy subsoil is not too unstable, the City is conducting a scan using a ground-penetrating radar. Explanations.
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After the flood episode in February, the Ancenis-Saint-Géréon town hall called on the Datagéo company to scan several streets and a park. The objective of this intervention is to detect potential soil vulnerabilities and consider consolidation work. | OUEST-FRANCE
![After the flood episode in February, the Ancenis-Saint-Géréon town hall called on the Datagéo company to scan several streets and a park. The objective of this intervention is to detect potential soil vulnerabilities and consider consolidation work.]({"srcset":"https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=320&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=15650d0b8379e58469fde658e4a3cfebad67d632d0a7d36588c72161443c4b24 320w,https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=375&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=49e8e9d1c57411bee7843c012c1f9f2f67f82c77fbb4b100a030e06e9f41926e 360w,https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=480&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=f4fb08ebdea08c08837b202843233ff0e0170ea720e1ab660070aad63e7b7566 480w,https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=630&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=ac4f19e97355b8024f5f0d50c5800959eadf382d564c0a8d2deef97d2b11b5f4 630w,https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=940&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=54020befa8a40549cac71ce1463c3be6b7a89cad096c1ce82b567162fd7db827 940w,https://media.ouest-france.fr/v1/pictures/MjAyNjAzZmMxYjcyNmI3Yjk5OTU2MGNhNzgxOWI3MjA2ZWZmNGE?width=1260&focuspoint=50%2C70&cropresize=1&client_id=bpeditorial&sign=01ea544c6607a6160ab9a0cbfdeaecd11f7dc4141cade50671a37a87acecdd24 1260w"})
It doesn’t look like it. But this strange device attached to the back of a van and rubbing against the road surface is a little gem of technology, estimated to be worth €200,000. Its name? Ground-penetrating radar. Its mission? To examine the subsoil of Ancenis-Saint-Géréon (Loire-Atlantique) damaged by the historic flood of February 2026.
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