Tubbing ring for lining a tunnel

Details Tubbing ring for lining a tunnel Tubbing ring for lining a tunnel

1987-12-17

1989-03-14

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

405151, E21D 1104

Patent

active

048120847

ABSTRACT:
A tubbing ring for lining a tunnel comprises end faces lying in respective planes, which preferably include an acute angle with each other. The tubbing ring comprises an even number of tubbing blocks, which have abutting longitudinal side faces that have such an inclination to a line which is parallel to the longitudinal axis of the ring that the tubbing blocks constitute ring segments which are substantially trapezoidal in a view on a diametral plane. In order to provide a tubbing ring which is of the kind described first hereinbefore and in which the assembling of the individual blocks is simplified and can be performed with a higher accuracy than before, each block is formed with recesses in its longitudinal side faces in a portion which extends radially at the center of the length of the side face, and in its end faces and said recesses are adapted to receive coupling elements for a positive guidance of the next tubbing block to be inserted into the same tubbing ring and of a corresponding tubbing block of an adjacent tubbing ring to be assembled, each of said longitudinal side faces and of said end faces is preferably smooth in a major part of its area.

REFERENCES:
patent: 673852 (1901-05-01), MacHarg
patent: 1866242 (1932-07-01), Warner et al.
patent: 3483704 (1969-12-01), Tabor
patent: 3695044 (1972-10-01), Hoshino et al.
patent: 4477204 (1984-10-01), Rohde et al.

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