Mine roof support system

E - Fixed Constructions – 21 – D

Patent

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Details

E21D 23/00 (2006.01) E21D 11/00 (2006.01) E21D 21/00 (2006.01)

Patent

CA 2190677

The present invention relates to a cable truss system for supporting a mine roof. The system includes at least one cable bolt secured in at least a pair of spaced boreholes. A leading end of each cable bolt is secured within the borehole and the trailing end extending out of the borehole. At least one splice tube is coupled to the trailing end of each cable bolt. Each splice tube includes an elongated conduit between a pair of spaced ends with the conduit adapted to receive at least a pair of cables therethrough. Cable attachments are provided on the trailing end of each cable bolt at a position on the cable bolt such that the splice tube is positioned between the cable attachment and the borehole. The cable attachment has a diameter larger than the inner dimensions of the conduit of the splice tube such that the cable attachment is adapted to abut against one end of the conduit of the splice tube.

La présente invention se rapporte à un système d'armature pour plafond de mine. Le système comporte au moins un paire de boulons à câble fixés dans au moins une paire de trous de forage espacés l'un de l'autre. L'extrémité avant de chaque boulon à câble est fixée dans le trou de forage et l'extrémité arrière reste en saillie. Au moins un tube d'épissure est relié à la partie saillante de chaque boulon. Chaque tube d'épissure comporte un conduit de forme allongée avec deux extrémités et peut recevoir au moins deux câbles. La partie saillante de chaque boulon comporte des points de fixation situés de telles sorte que le tube d'épissure se trouve entre les points de fixation et le trou de forage. Les points de fixation ont un diamètre plus grand que le diamètre intérieur du conduit du tube d'épissure, de telle sorte qu'il prend appui sur l'extrémité du conduit du tube d'épissure.

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