| 摘要 |
<p>A rock stabiliser (2) for stabilising an earth or rock formation when located in a bore formed in the rock formation. The rock stabiliser (2) has a unique construction of an outer sleeve in the form of a longitudinally extending hollow tube (4) and a number of twisted or braided cables (24) located within the hollow tube (4). The outer sheath (4) is in the form of a friction bolt provides good initial holding power when the stabiliser (2) is first inserted into the bore of the rock formation so as to enable liquid adhesive in the form of grout, cement or similar to be pumped into the bore without the stabiliser (2) falling from the bore. The cable arrangement (20) has two enlarged areas (26) located towards either end which may be surrounded by the liquid adhesive to firmly retain the stabiliser in position when the grout cures. Thus, the stabiliser (2) provides improved initial holding power and increased long-term holding power because of its unique construction.</p> |
