| 摘要 |
The present invention relates to a rock bolt 10 for use in stabilising a rock face. The rock bolt 10 comprises a body 12 having a plurality of elongate lobes 22 spaced apart by substantially resilient channel means. The rock bolt 10 is further configured to receive expansion means for urging the lobes 22 outwardly to thereby expand the rock bolt 10 for improving a communication with a bore hole in the rock face. Following expansion the expansion means may be removable, the expansion means can comprise any suitably sized hollow or solid bar expansion member. The configuration of the present invention also enables, subsequent to an initial expansion, the resilient channel means to provide a gripping force on any suitably sized member inserted into the internal space. This feature of the rock bolt 10 allows for a mesh plate having an elongate portion to be securely and removably fitted to the rock bolt 10 after the rock bolt has been expanded. |
