Hydraulic and earth engineering – Underground passageway – e.g. – tunnel
Patent
1979-02-14
1982-12-28
Taylor, Dennis L.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
405184, E21D 904
Patent
active
043659136
ABSTRACT:
The present invention relates generally to a method and a device for building in the ground vertical-walled tunnels or the like starting from a subterranean conduit, and also to the underground structures, such as tunnels or the like, obtained by the said method.
Already known in the art is the making of underground vertical walls by first providing trenches lined with sheet metal and then filling the same with concrete or with stonework or brickwork. Such trenches are usually excavated by the open-cut method, starting from the surface of the ground or from an open excavation.
Where such walls must be constructed on a surface-built urban site or at a location where communication facilities such as streets, roads, railway tracks, airport runways, etc., are established and the activities taking place at the surface must not be interfered with, the trenches may be started from underground horizontal propped galleries made by known conventional means.
The horizontal galleries, the excavation of which is started from an access shaft, serve as a starting point for making the trenches intended to form the vertical walls. The galleries also serve as conduits for ventilating, carrying away the excavated materials, conveying props, reinforcements and concrete.
REFERENCES:
patent: 755955 (1904-03-01), Sooysmith
patent: 836215 (1906-11-01), Reno
patent: 960941 (1910-06-01), Jackson
patent: 1800819 (1931-04-01), Donaldson
patent: 3356167 (1967-12-01), Trent
patent: 4009579 (1977-03-01), Patzner
patent: 4166509 (1979-09-01), Ueno et al.
Compagnie International des Pieux Armes Frankignoul
Taylor Dennis L.
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