ADECO full-face tunnel excavation of two 260 m super(2) tubes in clays with sub-horizontal jet-grouting under minimal urban cover

• Published in: Tunnelling and underground space technology Vol. 26; no. 2; pp. 253 - 266
• Main Author: Tonon, Fulvio
• Format: Journal Article
• Language: English
• Published: 01.03.2011
• Subjects: Clays; Construction industry; Emptying; Excavation; Grounds; Roads; Tubes; Tunnels (transportation)

With a cover of 5-30 m, a 260 m super(2) cross-sectional area, and a 4-m wide pillar, the Cassia twin road tunnels underpass Cassia road (main road to/from Rome), the remnants of a 2000 year-old Roman villa, and two existing tunnels. Stiff silty clay dominates the alignment. According to the Analysi...