发明名称 |
METHOD OF ROCK BOLTING AND TUBE-FORMED EXPANSION BOLT |
摘要 |
A tube-formed rockbolt is partly circular in its cross-section and opposite its circular portion (12) it has a deep depression (16-18). Its ends are sealed and its outer end has a hole (44, 45) or a fitting (24) through which the bolt can be supplied with high pressure water that expands the tube to anchor it in the borehole. |
申请公布号 |
DE3068155(D1) |
申请公布日期 |
1984.07.19 |
申请号 |
DE19803068155 |
申请日期 |
1980.03.03 |
申请人 |
ATLAS COPCO AKTIEBOLAG |
发明人 |
ROMELL, GUNNAR VIGG RISS;SKOGBERG, BO TORBJORN |
分类号 |
F16B13/04;E02D5/80;E21D20/00;E21D21/00;F16L58/08;(IPC1-7):E21D21/00 |
主分类号 |
F16B13/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|