Combined resin-mechanical mine roof bolt anchor
This patent describes a combined mechanical-chemical mine roof anchoring and stabilizing system for insertion into a drill hole of predetermined depth and diameter following a standard, two-compartment resin cartridge. The system comprises: an elongated rod having a head at one end and threaded from the opposite end for a portion of its length; a mechanical expansion anchor including a radially expansible shell and an internally threaded camming plug engaged with the threads of the rod for movement of the plug into the shell to effect expansion thereof into engagement with the wall of the drill hole in response to rotation of the rod in a predetermined direction; and means for maintaining the plug and shell in assembled relation on the rod prior to expansion of the shell.
- Assignee:
- Eastern Co., Naugatuck, CT
- Patent Number(s):
- US 4664561
- OSTI ID:
- 6534672
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
ANCHORS
CLOSURES
COAL MINES
DEPTH
DESIGN
DIMENSIONS
EQUIPMENT
MINES
MINING
MINING EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
ROOF BOLTS
STABILIZATION
UNDERGROUND FACILITIES
UNDERGROUND MINING