| 摘要 |
A rock bolt ( 1 ) comprises a tubular body ( 4 ) defining a tubular bore ( 5 ) for receiving an adhesive or cement filled cartridge ( 18 ). A plug ( 8 ) is mounted in the bore ( 5 ). The plug ( 8 ) is displaceable along the bore ( 5 ) and sealingly engages the tubular body ( 4 ). A bolt head ( 7 ) is located at or adjacent a second end ( 3 ) of the rock bolt ( 1 ). A detent arrangement ( 10, 12 ) restrains the plug ( 8 ) in a position adjacent an opening at the first end ( 2 ) of the rock bolt ( 1 ).
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