| 摘要 |
<p>A drilling apparatus for single pass bolting, the drilling apparatus comprising a drill steel assembly and a disposable drill bit, wherein the drill steel assembly comprises at least a drill steel having first and secon d ends, the first end of the drill steel (72) being adapted to releasably operatively engage a means for imparting rotational and impact energy (74) a nd the second end (78) of the drill steel is releasably operatively interconnected with the disposable drill bit (62), the drill steel (72) bein g adapted to transmit rotational and impact energy to the disposable drill bit (72) and wherein the drill apparatus is characterised in that a portion of t he second end (78) thereof is adapted to be received within a standard friction bolt, the drill steel assembly is provided with drive means (74) adapted to drive the friction bolt into a body requiring reinforcement, and the drill steel assembly is adapted to allow facile disconnection of the disposable drill bit therefrom, whilst the drilling apparatus is embedded in the body requiring reinforcement.</p> |
