Water and Energy Abstracts
  • Year: 2005
  • Volume: 15
  • Issue: 1

Twenty Years of Experience in the Use of the Umbrella-Arch Method of Support for Tunnelling

  • Author:
  • Giampiero Carrieri, Piergiorgio Grasso, Renato Fiorotto, Sebastiano Pelizza

(Gallerie E. Grandi Opere Sotterranee n. 72 maggio 2004, pp. 41).

Keywords

Tunnelling, Umbrella arch, Tunnel excavation, Drilling equipment, Glacial deposits, Grout-injected sacks