EP 0300159 B1 19910925 - METHOD AND DEVICE FOR LINING A TUNNEL WITH CONCRETE CAST IN SITU
Title (en)
METHOD AND DEVICE FOR LINING A TUNNEL WITH CONCRETE CAST IN SITU
Publication
Application
Priority
DE 3723625 A 19870717
Abstract (en)
[origin: US4854776A] A process for lining a tunnel with concrete behind a tunnel excavator having a for front advanced along with an excavator head in which the concrete is forced between the surrounding subterranean geological structure and an inner tunnel-lining form through a form front which rides sealingly on the outer surface of the inner tunnel-lining form and on the inner surface of the shield. Simultaneously, the form front, which is longitudinally movable relative to the shield, moves forward relative to the inner tunnel-lining form. The form front is movable forward simultaneously balancing the friction forces occurring between the form front and the shield and the inner tunnel-lining form. Satisfactory results are obtained when the friction forces between concrete sections of a predetermined length are measured by moving the form front relative to the stationary shield and the inner tunnel-lining form during an interruption in concrete feed. An apparatus for carrying out the process includes a hydraulic spring device attached between the form front and the shield which is a part of a control loop having a control device connected to the concrete pump. The hydraulic cylinder device can comprise a plurality of double-cylinder piston-cylinder devices.
IPC 1-7
IPC 8 full level
E21D 11/10 (2006.01); E21D 9/06 (2006.01)
CPC (source: EP KR US)
E21D 9/00 (2013.01 - KR); E21D 9/0607 (2013.01 - EP US)
Designated contracting state (EPC)
BE FR GB IT NL
DOCDB simple family (publication)
EP 0300159 A1 19890125; EP 0300159 B1 19910925; DE 3723625 A1 19890223; DE 3723625 C2 19900419; DK 397588 A 19890118; DK 397588 D0 19880715; JP H0227098 A 19900129; JP H0776520 B2 19950816; KR 890002521 A 19890410; KR 970007348 B1 19970507; US 4854776 A 19890808
DOCDB simple family (application)
EP 88108179 A 19880521; DE 3723625 A 19870717; DK 397588 A 19880715; JP 17528688 A 19880715; KR 880008968 A 19880716; US 21824088 A 19880712