Method and apparatus for installing mine roof supports
Patent
·
OSTI ID:5375900
A method is described of installing mine roof support plates at locations in a mine. The method consists of drilling a first hole in a mine roof at a first location in the mine, moving a coil of rod material to the first location in the mine, feeding rod material from the coil of rod material while the coil is at the first location in the mine, straightening the rod material fed from the coil, connecting a first expandable anchor assembly to an end of the rod material, inserting the first anchor assembly into the first hole. The step of inserting the first anchor assembly into the first hole includes feeding rod material upwardly through a first fastener and a first mine roof support plate into the first hole, setting the first anchor assembly in the mine roof by pulling downwardly on the rod material with a first force to expand the first anchor assembly after having inserted the first anchor assembly into the first hole, thereafter, pulling downwardly on the rod material with a second force which is less than the first force, pressing the first mine roof support plate against the mine roof at the first location, connecting the first fastener with the rod material while pressing the first mine roof support plate against the mine roof and while pulling downwardly on the rod material with the second force to enable a fastener to cooperate with the rod material to press the first mine roof support plate against the roof of the mine at the first location with a force having a magnitude which is a function of the magnitude of the second force.
- Assignee:
- NOV; NOV-85-015049; EDB-86-147829
- Patent Number(s):
- US 4589803
- OSTI ID:
- 5375900
- Country of Publication:
- United States
- Language:
- English
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