A ladderway system for underground raises

Details A ladderway system for underground raises A ladderway system for underground raises

E - Fixed Constructions

21

F

E21F 11/00 (2006.01) E06C 1/34 (2006.01) E06C 9/02 (2006.01) E21D 7/00 (2006.01)

Patent

CA 2589706

A ladderway system (10) for an underground raise comprises an elongate tube (12) adapted to generally conform to the shape of the raise. The tube (12) is of circular cross-section to generally conform to the shape of a round bored raise. The tube (12) is formed with a longitudinal slit (14) along its entire length, whereby the diameter of the tube (12) can be adjusted to generally conform to the shape of the raise. The ladderway system (10) further comprises a ladder (16) adapted to be mechanically coupled to an interior of the tube (12). The tube (12) is manufactured of a sufficiently rigid and strong plastics material, such as polyurethane, so that it acts as a surface membrane or liner within the raise.

L~invention décrit un système de descente (10) à échelle pour une cheminée souterraine qui comprend un tube allongé (12) adapté pour épouser la forme de la cheminée. Le tube (12) a une section circulaire pour épouser sensiblement la forme d~une cheminée forée circulaire. Le tube (12) comprend une fente longitudinale (14) sur toute sa longueur ce qui permet d~ajuster le diamètre du tube (12) pour qu~il épouse sensiblement la forme de la cheminée. Le système de descente (10) à échelle comprend en outre une échelle (16) adaptée pour s~accoupler mécaniquement avec l~intérieur du tube (12). Le tube (12) est fabriqué à partir d~un matériau plastique suffisamment rigide et résistant, tel que du polyuréthane, de sorte à ce qu~il agisse en tant que membrane de surface ou chemisage dans la cheminée.

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