Abstract: A method for carrying out wire bolting of a rock, in which method a hole is drilled in a rock, and a wire piece shorter than the hole is pushed into the hole. In order to simplify the insertion, the wire piece is pushed into the hole by the same wire from which the wire piece has been cut. A wire bolting device developed for effecting the method comprises a cutting device mounted on the carrier of the device between a wire feeding mechanism and a resilient guide pipe attached to a head guide. A mounting space is provided beside the cutting device for the mounting of a pushing support between the ends of the cut wire.

Abstract: A device for storing a concrete feeding hose in a rock bolting device, comprising a reel for a hose, which reel is mounted rotatably on a supporter, and that end of the hose which is attached to the reel is connected to concrete feeding means. In order that the coiling device could be used for passing the hose into a drill hole and for drawing it out of the hole, the reel is surrounded by a ring-shaped supporting wall against which the hose is positioned when the reel is rotated in the uncoiling direction. An unrotative guiding means is provided beside the supporting wall so as to guide the hose out of the reel by the action of an axial expulsive force exerted on the hose due to the rotary movement of the reel.

Abstract: The invention relates to a method and a device for guiding a concrete feeding hose in connection with the grout feedin rock bolting. The concrete feeding hose is therein passed by means of a feeder froma reel into a guide head supported on a feeding beam of a drilling equipment and further through the guide head into a hole drilled in the rock, and is passed back on to the reel in proportion as the hole is filled. In order to protect the feeder of the concrete feeding hose against dirt and mechanical damage, the concrete feeding hose is pushed into the guide head through a flexible guiding means.