A CAPSULE FOR USE IN ANCHORING AN ANCHOR ELEMENT IN BOREHOLE

摘要

Loose particulate material, preferably housed in a capsule, is urged towards the blind end of a borehole. An anchor element (10) having an end plate or a head (12) and a disc (18) spaced from the head is driven into the hole with rotation to compact the particulate material to form a load bearing annulus. The material is selected to be of a defined aggregate crushing value.