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This document summarizes a paper presented at the World Tunnel Congress 2014 in Brazil about key aspects of tunneling in tropical residual soil. It describes a 235m long tunnel being constructed in São Paulo, Brazil through heterogeneous and highly weathered tropical residual soils. The soils exhibited ever-changing properties with depth, requiring careful ground treatment and dewatering. Geotechnical parameters were estimated based on limited data. Excavation of the tunnel with four different cross section

Author

Mapeix

Language

EN