Method and apparatus for anchoring rock bolts and cables

Details Method and apparatus for anchoring rock bolts and cables Method and apparatus for anchoring rock bolts and cables

E - Fixed Constructions

21

D

61/47

E21D 20/02 (2006.01) F16B 13/14 (2006.01)

Patent

CA 1239026

ABSTRACT OF THE DISCLOSURE A method and apparatus for anchoring rock bolts and cables in drill holes is disclosed. The method of the invention comprises mixing a dry aggregate-cement mixture with a limited, predetermined amount of water in a water fitting and blowing the wetted cementitious mixture through a delivery tube into a drill hole, in which an anchor cable or rock bolt has been inserted, resulting in the cable or bolt becoming permanently anchored in the drill hole. The use of a wetted dry cementitious mixture eliminates leakage of mixture from the drill hole and obviates the use of a plug, cover or collar plate. The equipment includes a pressurized, dry mix delivery vessel, a source of pressurized air, a water fitting for wetting dry mix with water and a delivery tube for delivery of the wetted dry mix into the drill hole.

482584

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