Method and apparatus for grouting of tunnel liners

Details Method and apparatus for grouting of tunnel liners Method and apparatus for grouting of tunnel liners

1995-06-07

1997-07-08

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

138 98, 405154, F16L 5518

Patent

active

056453752

ABSTRACT:
A method and apparatus for filling cavities in underground excavations. Sodium silicate and aqueous foam are mixed with cement slurry to produce a quick-setting foamed cement grout having a meringue-like consistency. The high viscosity of the grout combines with the very fast initial set time to minimize the problem of grout flowing out of the cavity following injection. The method and apparatus are particularly suited to grouting of the annular cavity which is formed between the tail shield of a tunnel boring machine and a segmental tunnel liner which is assembled therein.

REFERENCES:
patent: 3561223 (1971-02-01), Tabor
patent: 4063425 (1977-12-01), Jutte et al.
patent: 4419135 (1983-12-01), Hoge
patent: 4786206 (1988-11-01), Yamomoto et al.
patent: 4984933 (1991-01-01), Annett et al.
patent: 5063967 (1991-11-01), Stephens
Halliburton Services, Industrial Grouting Technical Data, Injector G Silicate Grouting Service.
Soast, Allen, "Mix halts flowing water in seconds," ENR Feature, Jul. 20, 1989.

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