| 摘要 |
<p>Disclosed is a rock bolt assembly for installation in a bore hole (200) extending through a rock face (201). The assembly has an elongate load bearing member (101) longitudinally extending between a member leading end (101a) and a member trailing end (101b). An end fitting (120) mounted on said load bearing member (101) is configured to engage a plate washer (160) in use for transferring load between said load bearing member (101) and the rock face (201) surrounding the bore hole (200). The end fitting (120) defines a grout delivery passage (135) for delivery of grout through the end fitting (120) to encapsulate a length of the load bearing member (101) in use. A debonding sleeve (150) mounted on the load bearing member (101) between the end fitting (120) and the member leading end (101a) to at least substantially prevent the passage of grout between the sleeve (150) and the load bearing member (101).</p> |
