Method and device for rock bolting

Details Method and device for rock bolting Method and device for rock bolting

E - Fixed Constructions

21

D

E21D 20/00 (2006.01)

Patent

CA 2523296

Method and device for rock bolting, wherein a tubular bolt (2) with closed cross-section is inserted and expanded for anchoring inside a bore hole (12), wherein the tubular bolt is expanded to contact in the inner portion of the bore hole, a tension element (3, 7, 8, 9) which is arranged in the outer portion of the bore hole with an inner part (7) attached to the tubular bolt (2) is pre-stressed and a settable medium is injected into the outer portion of the bore hole (14) between (27) the tension element and the wall of the bore hole and is allowed to set.

L'invention concerne un procédé et un dispositif de soutènement par boulons d'ancrage dans lesquels un boulon tubulaire (2) doté d'une section transversale fermée (12) est introduit et étendu aux fins d'ancrage à l'intérieur d'un puits de forage, le boulon tubulaire est étendu de manière à venir en contact avec la partie interne du puits de forage, un élément de tension (3, 7, 8, 9) disposé dans la partie externe du puits de forage et dont une partie interne (7) est fixée sur le boulon tubulaire (2) est mis sous tension au préalable et un milieu de prise est injecté dans la partie externe du puits de forage (14) entre (27) l'élément de tension et la paroi du puits de forage et peut prendre.

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