Expandable rock bolt and rock bolting system

Details Expandable rock bolt and rock bolting system Expandable rock bolt and rock bolting system

E - Fixed Constructions

21

D

E21D 21/00 (2006.01) E21F 17/02 (2006.01)

Patent

CA 2523769

The present invention is related to a rock bolt (7), expandable by means of a pressure media, for insertion into a borehole. The expandable bolt (7) comprises a connection unit (8) with means (11) for detachable interaction with an expansion means (10) for expansion of the rock bolt (7), as well as with a suspension element (16). The connection unit is designed with such external dimensions so that it may be inserted into the borehole. The invention also relates to such a rock bolting system.

L'invention concerne un boulon d'ancrage (7) extensible au moyen d'un milieu de pression et destiné à être introduit dans un puits de forage. Le boulon extensible (7) comprend une unité de connexion (8) dotée de moyens (11) destinés à une interaction amovible avec des moyens d'expansion (10), aux fins d'expansion du boulon d'ancrage (7), ainsi qu'avec un élément de suspension (16). L'unité de connexion est conçue de manière à présenter des dimensions externes telles que l'unité puisse être introduite dans le puits de forage. L'invention concerne également un tel système de soutènement par boulons d'ancrage.

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