EP 0781895 B1 20011017 - Method of excavation for underground structures of variable cross sectional area
Title (en)
Method of excavation for underground structures of variable cross sectional area
Title (de)
Verfahren zum Bohren von unterirdischen Strukturen mit variabler Grösse des Querschnittes
Title (fr)
Procédé d'excavation de structures souterraines à section transversal de surface variable
Publication
Application
Priority
JP 35302495 A 19951228
Abstract (en)
[origin: EP0781895A1] A method and an apparatus of excavation for underground structures of variable cross sectional area are provided in which a shield excavator of large cross sectional area is used as a main machine (1), and another shield excavator of smaller cross sectional area than the main machine (1) is used a an auxiliary machine (2). That portion of the underground structure of large cross section is excavated using the main machine (1) with the auxiliary machine (2) housed inside thereof and operating jointly, and for that portion of the underground structure of small cross section, the auxiliary machine (2) is advanced out of the main machine (1) and excavation proceeds with the auxiliary machine (2) only. Meanwhile, the main machine (1) is left on standby at the next portion of the structure of large cross section, and when the auxiliary machine (2) reaches that point, it is re-inserted into the main machine (1), and then excavation proceeds again using the main machine (1) with the auxiliary machine (2) housed inside and interlocked therewith for joint operation. <IMAGE>
IPC 1-7
IPC 8 full level
E21D 9/06 (2006.01); E21D 9/08 (2006.01); E21D 9/087 (2006.01); E21D 9/11 (2006.01)
CPC (source: EP)
E21D 9/0874 (2016.01); E21D 9/0879 (2016.01); E21D 9/113 (2013.01); E21D 9/116 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0781895 A1 19970702; EP 0781895 B1 20011017; DE 69616001 D1 20011122; DE 69616001 T2 20020704; JP 3622161 B2 20050223; JP H09184393 A 19970715
DOCDB simple family (application)
EP 96110771 A 19960703; DE 69616001 T 19960703; JP 35302495 A 19951228