An anti-seismic support method for a mine shaft includes: providing a circular support groove in a liquefaction-prone layer of the mine shaft; providing horizontal support holes in a groove wall, and fixing an outer support spring steel cylinder against the groove wall; drilling vertical support holes at a groove bottom, anchoring a vertical anchor rod group into the vertical support holes, and injecting an expansion anchoring slurry into the vertical anchor rod group; making a lower positioning support ring abut against an upper end of the vertical anchor rod group and an inner wall of the outer support spring steel cylinder; fixing an anti-seismic connecting rod group between lower and upper positioning support rings; making an outer wall of an inner support spring steel cylinder abut against the upper and lower positioning support rings; and providing an upper support cover seat atop the outer and inner support spring steel cylinders.

An anti-seismic support method for a mine shaft includes: providing a circular support groove in a liquefaction-prone layer of the mine shaft; providing horizontal support holes in a groove wall, and fixing an outer support spring steel cylinder against the groove wall; drilling vertical support holes at a groove bottom, anchoring a vertical anchor rod group into the vertical support holes, and injecting an expansion anchoring slurry into the vertical anchor rod group; making a lower positioning support ring abut against an upper end of the vertical anchor rod group and an inner wall of the outer support spring steel cylinder; fixing an anti-seismic connecting rod group between lower and upper positioning support rings; making an outer wall of an inner support spring steel cylinder abut against the upper and lower positioning support rings; and providing an upper support cover seat atop the outer and inner support spring steel cylinders.

A single-use sealing bush which is adapted to form a sealing interface between a rock bolt and a nozzle of a grout delivery system, the sealing bush including a cylindrical body defined between a first end and a second end; a hole in the first end of the body that is adapted to receive the rock bolt; a pair of spaced apart annular ridges, on an outer cylindrical surface of the body, between which a grout distributing channel is defined; and an aperture which connects the channel to the recess; wherein each annular ridge is adapted to seal against the nozzle in a position which communicates a grout inlet port of the nozzle with the grout distributing channel.

A fastening system for chemically fastening an anchor, the fastening system including a chemical anchor that is a ready-for-use two-component mortar system based on albuminous cement, and an anchor rod comprising an attachment region and an anchoring region. The anchor rod is insertable into a borehole and has a profiled section including a plurality of expansion sections disposed axially in a row which are conically shaped.

A rock anchor assembly includes: a tubular sleeve between first and second ends, having an anchor retaining portion opening on the second end; a rock anchor with an elongate body extending between distal and proximal ends, received in the tubular sleeve with the proximal and distal ends of the body projecting from the first and second ends respectively of the sleeve; a tensioning and locking assemblage on the anchor body between the proximal end and the first end of the sleeve, a forward part being engageable with the first end of the sleeve; and a mechanical anchor engaged to the anchor body at the distal end which, from an unexpanded configuration, expands radially to an expanded configuration. The anchor retaining portion at least partially retains the mechanical anchor in the unexpanded configuration. The anchor retaining portion expands circumferentially to accommodate retracted ingress of the anchor in the expanded configuration.

A rock anchor assembly includes: a tubular sleeve between first and second ends, having an anchor retaining portion opening on the second end; a rock anchor with an elongate body extending between distal and proximal ends, received in the tubular sleeve with the proximal and distal ends of the body projecting from the first and second ends respectively of the sleeve; a tensioning and locking assemblage on the anchor body between the proximal end and the first end of the sleeve, a forward part being engageable with the first end of the sleeve; and a mechanical anchor engaged to the anchor body at the distal end which, from an unexpanded configuration, expands radially to an expanded configuration. The anchor retaining portion at least partially retains the mechanical anchor in the unexpanded configuration. The anchor retaining portion expands circumferentially to accommodate retracted ingress of the anchor in the expanded configuration.

The present invention provides a single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof, which are suitable for use in supporting engineering for the deep dynamic pressure roadway or soft rock roadway. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased on a premise of ensuring roadway safety; central grouting is carried out for the steel wire bundle with a pump truck without affecting the quick roadway tunneling, so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway. The length of the steel wire bundle may be selected according to the geological conditions and the mining environment of the mine, and is not limited by the height of the roadway; the single-anchor centrally grouted supporting method realizes full-length anchoring of the steel wire bundle, and it not only improves the roadway tunneling speed and relieves mining imbalance in the mine, but also solves the problem of large deformation of the roadway.

A drilling and bolting rig for performing drilling and bolting operations. The drilling and bolting rig includes a magazine for storing a consumable, a feed supporting a drill head for movement relative to a work surface, and a loader configured to retrieve the consumable from the magazine and load the consumable into the drill head. The loader includes an arm operable to engage the consumable. The arm is supported for both rotational and translational movement.

The present invention discloses an anchoring apparatus and an operation method thereof. The anchoring apparatus includes: a movable framework (1); a folding-type working platform (2) that includes a working platform frame (203), a longitudinal guide (204), a transverse guide (205) and a central turntable (206), the longitudinal guide (204) being movable along the transverse guide (205), and the central turntable (206) driving the longitudinal guide (204) and the transverse guide (205) to rotate relative to the working platform frame (203); a drilling machine (3); a workpiece supply system (4); and a power control system (5) that drives the movable framework (1) to move. With the anchoring apparatus, the mechanical and automatic anchoring with anchor bolts and anchor cables can be implemented in anchoring, the labor intensity in anchoring can be greatly reduced, the efficiency of anchoring can be improved, and the safety in the entire process can be enhanced.

The present invention discloses an anchoring apparatus and an operation method thereof. The anchoring apparatus includes: a movable framework (1); a folding-type working platform (2) that includes a working platform frame (203), a longitudinal guide (204), a transverse guide (205) and a central turntable (206), the longitudinal guide (204) being movable along the transverse guide (205), and the central turntable (206) driving the longitudinal guide (204) and the transverse guide (205) to rotate relative to the working platform frame (203); a drilling machine (3); a workpiece supply system (4); and a power control system (5) that drives the movable framework (1) to move. With the anchoring apparatus, the mechanical and automatic anchoring with anchor bolts and anchor cables can be implemented in anchoring, the labor intensity in anchoring can be greatly reduced, the efficiency of anchoring can be improved, and the safety in the entire process can be enhanced.