Method of and apparatus for concrete tunnel lining

Details Method of and apparatus for concrete tunnel lining Method of and apparatus for concrete tunnel lining

1986-03-13

1987-08-18

Husar, Cornelius J.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405150, 264 25, E21D 906, E21D 1110

Patent

active

046873740

ABSTRACT:
An apparatus for making a tunnel lining from concrete in a single operation with a tunnel excavator comprises a tunnel lining form consisting of a plurality of tunnel lining form segments and a form front adjacent the tunnel excavator and a tunnel lining circular space between the form and the ground. In order to heat the concrete as it is pumped into the tunnel lining circular space to accelerate hardening, transmitting antennae for electromagnetic radiation are mounted in the tunnel lining form segments and/or the feed pipes for the concrete. Similarly a process for making a tunnel lining from concrete comprises pumping concrete into the tunnel lining circular space and accelerating the hardening of the concrete by heating it with electromagnetic radiation. The tunnel form is rapidly repositioned after the concrete being hardened reaches a sufficient strength.

REFERENCES:
patent: 3449213 (1969-06-01), Knapp et al.
patent: 3452176 (1969-06-01), Levinson
patent: 3594530 (1971-07-01), Wiegman
patent: 3827244 (1974-08-01), Walbrohl
patent: 4018642 (1977-04-01), Pike et al.
patent: 4222681 (1980-09-01), Khodosh et al.
patent: 4259560 (1981-03-01), Rhodes
patent: 4319856 (1982-03-01), Jeppson

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