TUBBING WITH THERMOPLASTIC MEMBRANE

The tubbing (1) has a convex-curved outer surface (2) and an opposite concave-curved inner surface (3). A thermoplastic layer bulkhead (4) is provided on the convex-curved outer surface and is engaged with a recess provided in the convex-curved outer surface. The outer side surfaces (7) are arranged...

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Bibliographic Details
Main Authors MEYER, KLAUS, WEBER, ULRICH K
Format Patent
LanguageEnglish
French
German
Published 23.07.2014
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:The tubbing (1) has a convex-curved outer surface (2) and an opposite concave-curved inner surface (3). A thermoplastic layer bulkhead (4) is provided on the convex-curved outer surface and is engaged with a recess provided in the convex-curved outer surface. The outer side surfaces (7) are arranged at the sides of the convex-curved outer surface. A sealing structure is arranged in sealing groove provided in the outer side surfaces. A sealant layer is provided inside the convex-curved outer surface.
Bibliography:Application Number: EP20120756491