发明名称 |
ROCK BOLT POST GROUTING APPARATUS |
摘要 |
An apparatus ( 100 ) for post-grouting a rock bolt ( 1 ) has an elongate sleeve ( 101 ) adapted to receive a rock bolt ( 1 ) with a first end ( 1 a) thereof extending beyond the sleeve first end ( 101 a) and a second end ( 1 b) thereof extending beyond the sleeve second end ( 101 b). An end fitting ( 102 ) is attached to the sleeve second end ( 101 b) and has a central aperture ( 106, 107 ) for receiving the rock bolt ( 1 ). Grout passages ( 112 ) communicate the exterior of the end fitting ( 102 ) with the interior of the sleeve ( 101 ). A seal means ( 117 ) is displaceable between open and closed positions so as to seal the grout passages ( 112 ). The seal means ( 117 ) is biased towards the closed position at which the grout passages ( 112 ) are substantially sealed. Injection of grout into the end fitting ( 102 ) via the passages ( 112 ) deflects the seal means ( 117 ) to the open position enabling flow of grout through the passages ( 112 ) and into the sleeve ( 101 ). |
申请公布号 |
EP1546508(A1) |
申请公布日期 |
2005.06.29 |
申请号 |
EP20030766066 |
申请日期 |
2003.08.01 |
申请人 |
DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED |
发明人 |
RATAJ, MIECZYSLAW, STANISLAW;LANGWADT, OTMAR |
分类号 |
E21D20/02;E21D21/00;(IPC1-7):E21D20/02 |
主分类号 |
E21D20/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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