Saudi Arabia
RIYADH METRO
Client
Year
2020
Construction budget
Key facts
Line 5: 13.2 km, with 12 km of single tube tunnel excavated with TBM, 860 m of C&C tunnel, 11 deeps underground stations, 11 ancillary shafts, connections with lines 1 and 2 and an underground depot with 260 m in width and 400 m in length.
Construction method: EPB TBM with rock capabilities and 10 m of excavation diameter.
Geology: Limestones, breccia and calcarenite with karst development. Anthropogenic fill and paleostreams filled with granular water bearing soil.