Installation for storing of natural gas

Details Installation for storing of natural gas Installation for storing of natural gas

B - Operations, Transporting

65

G

B65G 5/00 (2006.01) E21F 16/00 (2006.01) E21F 17/16 (2006.01)

Patent

CA 2334025

An installation for storing of natural gas or some other fluid comprises a lined underground storage space (10). Inside the rock wall (11) of the storage space there is a concrete layer (27) for supporting an inner impermeable lining layer (14). According to the invention, the concrete layer has a crack distribution control reinforcement layer (28) closer to the impermeable lining layer (14) than to the rock wall (11) in order to divide large cracks into smaller cracks and distribute the cracks over a larger area of the impermeable lining layer. Further, also according to the invention, there is between the impermeable lining layer (14) and the concrete layer (27) a non-binding sliding layer (29) to facilitate relative movements between the impermeable lining layer and the concrete layer.

Cette invention concerne une installation destinée au stockage de gaz naturel ou d'un autre fluide quelconque, laquelle comprend un espace de stockage souterrain (10) comportant un revêtement. Dans la paroi rocheuse (11) de l'espace de stockage se trouve une couche de ciment (27) sur laquelle vient reposer une couche de revêtement imperméable et interne (14). D'après cette invention, la couche de ciment comprend une couche de renfort et de régulation de répartition des fissures (28) qui est plus proche de la couche de revêtement imperméable (14) que de la paroi rocheuse (11). Il est ainsi possible de diviser des fissures importantes en des fissures plus petites, et de répartir les fissures sur une grande surface de la couche de revêtement imperméable. La couche de revêtement imperméable (14) et la couche de ciment (27) sont en outre séparées par une couche glissante et non adhésive (29) qui facilite les mouvements relatifs entre lesdites couches de revêtement imperméable et de ciment.

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