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List of products by author: L. Delmas
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Design of a large metro station cavern in weak rocks
Abstract: The Lot 1 of Paris metro line 11 consists in 3,6km of tunnels and 4 underground stations in an urbanized environment. The design has been performed by SYSTRA, construction has begun in 2016. The station “Dhuys” consisting of a deep shaft and a 50m long mined tunnel will be realized in the plastic and expansive marly soils of “Ludien” through an instable slope beneath several buildings with a...
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Geological characterization and reduction of uncertain ties for mechanized tunnelling with mixed face coarse...
Abstract: Lyon’s Metro B extension tunnel will be shallowly excavated in a dense and sensitive urban context, through pre- and postglacial alluvium interfacing with old wells, erratic boulders and a granite substratum. Settlement control using confined TBM, which is essential for reducing the risk of damage to buildings, become highly sensitive in such context. Among the risks that have been identified...
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