EP 0498786 A3 19930331 - METHOD FOR LIMITING SUBSIDENCE DURING THE EXCAVATION OF UNDERGROUND CAVITIES
Title (en)
METHOD FOR LIMITING SUBSIDENCE DURING THE EXCAVATION OF UNDERGROUND CAVITIES
Publication
Application
Priority
AT 24091 A 19910205
Abstract (en)
[origin: EP0498786A2] Method for limiting subsidence on the surface during the excavation of an underground cavity extending longitudinally, especially a tunnel, as a result of the eruption of material, such as loose rock, earth or the like. In this, as early as before the eruption of the material, as a result of stress rearrangements, a rock support ring is formed in that uplifts of the material are brought about, for example by an increase in volume, in the two lateral regions of the cavity to be produced, the so-called tunnel side walls. <IMAGE>
IPC 1-7
IPC 8 full level
E21D 9/00 (2006.01); E21D 11/00 (2006.01); E21F 17/00 (2006.01)
CPC (source: EP)
E21D 9/001 (2013.01); E21D 11/00 (2013.01)
Citation (search report)
- [A] GB 2083105 A 19820317 - COLGATE STIRLING AUCHINCLOSS
- [A] FR 322858 A 19030217 - BERLIER JEAN BAPTISTE [FR]
- [A] DE 2062081 A1 19710722
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0498786 A2 19920812; EP 0498786 A3 19930331; EP 0498786 B1 19941207; AT E115233 T1 19941215; DE 59200866 D1 19950119
DOCDB simple family (application)
EP 92890013 A 19920116; AT 92890013 T 19920116; DE 59200866 T 19920116