Mine roof support method and apparatus

Patent · Tue Mar 11 04:00:00 EST 1980

OSTI ID:5751845

Vass, G S

A rock formation, such as the roof of a mine tunnel, is reinforced by use of the apparatus of the invention to provide an anchor for a rock bolt which is tensioned to hold a support plate or similar structure in firm engagement with the face of the rock structure. The apparatus includes an elongated bar threadedly engaged with one end of a hollow collar, the other end of which is threaded to receive the rock bolt. An installation tool in the form of an elongated rod is provided at one end with outwardly extending fixed members for engagement with stop surfaces on the other end of the collar. Rotation of the tool is transmitted to the collar and bar to break a resin cartridge within a blind drill hole in the rock formation and mix the contents thereof. Upon hardening of the resin mixture about the bar, the installation tool is withdrawn and the rock bolt carrying a roof support plate is threaded into the anchored collar and tensioned to the desired degree.

• Assignee: Eastern Co
• Patent Number(s): US 4192631
• OSTI ID: 5751845
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
COAL MINING
DESIGN
EQUIPMENT
MECHANICAL STRUCTURES
MINING
MINING EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
ROOF BOLTS
SUPPORTS