EP 0234762 A1 19870902 - Improvements in or relating to methods of erecting tunnel linings.
Title (en)
Improvements in or relating to methods of erecting tunnel linings.
Title (de)
Verfahren zum Herstellen von Tunnelausbauten.
Title (fr)
Méthodes d'assemblage de revêtement de tunnels.
Publication
Application
Priority
GB 8602712 A 19860204
Abstract (en)
The disclosure relates to a method of erecting a tunnel lining using a tunnelling shield (40) comprising the steps of erecting a ring of segments (10) within the shield, each segment having a recess (20) around an outer peripheral edge thereof to provide, in the erected ring, a recess around the outer periphery of the ring of segments at the leading end of the ring in the direction of advance along the tunnel. The shield is then advanced with respect to the erected ring until the trailing end (41) of the shield locates in said recess in the leading end of the ring. The ring of segments is expanded against the tunnel wall by separating adjacent segments (10a) at at least one location around the ring whilst supporting the tunnel wall at that location against collapse by a cover sheet (29) and a supplemental segment (25) is then inserted between said adjacent segments to complete the ring.
IPC 1-7
IPC 8 full level
E21D 11/04 (2006.01); E21D 9/06 (2006.01); E21D 11/08 (2006.01); E21D 11/38 (2006.01)
CPC (source: EP KR)
E21D 9/0607 (2013.01 - EP); E21D 11/08 (2013.01 - EP); E21D 11/083 (2013.01 - EP); E21D 11/24 (2013.01 - KR); E21D 11/383 (2013.01 - EP)
Citation (search report)
- [X] GB 1508040 A 19780419 - GOLDSBY E
- [Y] GB 2137675 A 19841010 - RICHARDSON MICHAEL ALEXANDER
- [Y] GB 2124679 A 19840222 - TSUZUKI JUNICHI
- [Y] FR 2400650 A1 19790316 - CHARCON TUNNELS LTD [GB]
- [Y] FR 2273120 A1 19751226 - FIX BREVETS [FR]
- [Y] FR 2388129 A1 19781117 - ENTREPRISES SOC GLE [FR]
- [A] WO 7900921 A1 19791115 - SHERIDAN CONTRACTORS LTD [GB]
- [A] DE 2118034 A1 19721026
Designated contracting state (EPC)
AT BE CH DE ES FR GR IT LI LU NL SE
DOCDB simple family (publication)
GB 2186010 A 19870805; GB 8602712 D0 19860312; EP 0234762 A1 19870902; JP S62186000 A 19870814; KR 870008097 A 19870924
DOCDB simple family (application)
GB 8602712 A 19860204; EP 87300863 A 19870130; JP 2441887 A 19870204; KR 870000834 A 19870203