Process and apparatus for continuously lining a tunnel with...

Details Process and apparatus for continuously lining a tunnel with... Process and apparatus for continuously lining a tunnel with...

E - Fixed Constructions

21

D

61/65

E21D 11/04 (2006.01) E21D 11/10 (2006.01)

Patent

CA 1253706

ABSTRACT OF THE DISCLOSURE For continuously lining a tunnel with extruded concrete a pumping device for feeding the concrete and a form having an interior form member and a forwardly movable frontal frame are employed. The extruded concrete is put into place without clump formation, when it is provided in equal-sized segments in a plurality of equal constant amounts which are fed in succession one after the other circumferentially in a time interval which is small compared to the hardening time of the concrete. For this purpose the frontal frame is provided with a plurality of concrete input ports uniformly distributed circumferentially and connected with the pumping device, while the pumping device is designed to service the concrete input ports in succession one after the other circumferentially.

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