Method of rock bolting and rock bolt
Patent
·
OSTI ID:5251756
A rock bolt comprises an inflatable tube which has a deep longitudinal depression. A wire coil is mounted on the tube before the bolt is inserted in the borehole. When pressurized by high pressure water the tube expands and clamps the coil between itself and the borehole and the tube is thereby permanently anchored in the borehole. The depression develops during the expansion but the coil prevents full expansion of the tube.
- Assignee:
- Atlas Copco Aktiebolag (Sweden)
- Patent Number(s):
- US 4511289
- OSTI ID:
- 5251756
- Resource Relation:
- Patent Priority Date: Priority date 14 Oct 1982, Canada; Other Information: PAT-APPL-434177
- Country of Publication:
- United States
- Language:
- English
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