Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent
1987-02-11
1989-06-06
Reese, Randolph A.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Lining
405155, 138 98, 428 363, 428 364, 156294, E21D 1100, E02B 906, F16L 5510, F16L 5516
Patent
active
048367150
ABSTRACT:
The tensile strength, and particularly the ability to resist changes in cross-sectional configuration, of a rigidifiable-in-situ passageway lining material comprising a fibrous body with a settable resin forming a part thereof, the fibers in that fibrous body having their lengths generally extending transversely to the plane thereof, is enhanced by incorporating thereinto a reinforcing layer formed of fibers with their lengths generally extending in the plane of the lining, and preferably circumferentially when the lining defines a tube. A pair of such reinforcing layers may be provided, each near a different surface of the lining, thereby to simultaneously protect against buckling and ovality.
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Insituform International N.V.
Reese Randolph A.
Ricci John A.
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