Thrust bolting: Roof-bolt-support apparatus

Patent · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6084087

Tadolini, S C; Dolinar, D R

The invention relates to a method for installing a roof bolt in a borehole of a rock formation and more specifically to tensioning the unit without the aid of a mechanical anchoring device or threaded tensioning threads. The bolt is capable of being placed into tension along the length and the levels of active support can be controlled by varying the length of the grouted portion and the level of thrust applied to the bolt during installation.

• Research Organization: Department of the Interior, Washington, DC (United States)
• Assignee: Department of the Interior, Washington, DC.
• Patent Number(s): PAT-APPL-7-734 002
• OSTI ID: 6084087
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
BOREHOLES
CAVITIES
COAL MINES
ENGINEERING
EQUIPMENT
FORCING FUNCTIONS
GROUTING
INSTALLATION
MINES
MINING
MINING ENGINEERING
MINING EQUIPMENT
ROOF BOLTS
STRATA CONTROL
SUBSURFACE STRUCTURES
UNDERGROUND FACILITIES
UNDERGROUND MINING