| 摘要 |
A tube-formed expandable rock bolt (5) including an expansion portion (10, 10´) and, fastened thereto, a connecting portion (6, 6´) with an expansion fluid inlet for connection to an expansion fluid source over an expansion fluid delivering nozzle (1,17). The connecting portion (6,6´) has a cavity (7, 7´) for sealingly receiving said nozzle (1, 17) and the connecting portion has means (8, 23) for allowing releasable locking of said nozzle inside the cavity (7). The invention also concerns a nozzle. |
