| 摘要 |
A ground support apparatus comprising a first portion comprising elongate friction means for substantially anchoring the apparatus in a bore hole formed within a rock, body, a second portion disposed substantially towards a front end of the apparatus and which abuts the first portion, a localised anchor means disposed at a junction between the first portion and the second portion and a yielding mechanism. In use, a movement of the rock body engages the yielding mechanism thereby governing the rock body movement. |
