| 发明名称 |
Method of subsoil stabilization, device for subsoil stabilization and screw for rocks |
| 摘要 |
A rock bolt having a modified tip geometry for spreading grouting material along the bolt or rupturing a grouting material container, or both, and method of using such a rock bolt for substrate support. |
| 申请公布号 |
PL381631(A1) |
申请公布日期 |
2007.08.06 |
| 申请号 |
PL20070381631 |
申请日期 |
2007.01.29 |
| 申请人 |
RAYTHEON UTD INCORPORATED |
发明人 |
GIRALDO LUIS B.;COTTEN STEVEN A. |
| 分类号 |
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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