Geotechnical surveys line 15 south of the Grand Paris Express

Geotechnical surveys conducted by the Société du Grand Paris:

In order to better understand the characteristics of the land and to predict the sizing of the infrastructure, the Société du Grand Paris has been conducting a soil reconnaissance campaign throughout the route since 2012.

These surveys are absolutely essential in order to:
- position the structures according to local geological specificities,
- define the appropriate constructive methods,
- prepare the disposal of the spoil and its treatment,
- ensure the preservation of water resources.

The data presented here relate specifically to the geotechnical soundings of line 15 south.
The database on geotechnical surveys is organised in two files:
- L15S_-Geology-BDD_location (csv/xlsx): geographical location, depth of sounding and type of sounding
- L15S-Geology-_BDD_facies (csv/xlsx): survey facies

Each survey is identified by an identifier "Survey reference" which makes it possible to make the link between the two files.

A contextual document on the geology of Line 15 South is also provided as a PDF presentation.

For more information on soil surveys

About the line 15 south of the Grand Paris Express

From Pont-de-Sèvres station to Noisy-Champs station, line 15 Sud runs 33 km and includes 16 stations, 15 of which are connected to the metro, RER or tram. Line 15 Sud is a bypass line that serves 22 municipalities in the departments of Hauts-de-Seine, Val-de-Marne, Seine-Saint-Denis and Seine-et-Marne. In the long term, line 15 South should allow nearly 300,000 daily trips.

For more information:
- Line 15 south of the Grand Paris Express in 3D (youtube link)
- https://www.societedugrandparis.fr/troncon/line-15-south