کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
312139 | 534185 | 2006 | 12 صفحه PDF | دانلود رایگان |

The Aeschertunnel is a large shallow non-circular tunnel that was excavated in glacial moraine and Molasse bedrock. In the sections, where the excavation was in the glacial moraine, the construction procedure included the use of a jet-grout arch ahead of the tunnel face for excavation support. Measurements taken during the jet-grouting process and the excavation of the tunnel heading suggested a settlement trough much narrower than that observed using conventional NATM tunneling methods. The volume losses were limited to 0.35%, approximately the volume losses achieved with slurry shield and EPB TBM tunneling. A numerical back-analysis was performed on the surface settlements where jet-grouting was used. The back-analysis suggests that the narrow settlement trough results from localized shear bands that were induced by high pressures associated with the jet-grouting.
Journal: Tunnelling and Underground Space Technology - Volume 21, Issue 5, September 2006, Pages 542–553