Resin grouted cable bolts as primary roof support in an underground coal mine

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:171666

Bunnell, M ^[1]; Gillespie, D ^[2]

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1. Utah Fuel Company, Helper, UT (United States)
2. Rocky Mountain Bolt Company, Salt Lake City, UT (United States)

A number of underground coal mines in the U.S. have been utilizing resin grouted cable bolts as a means of supplemental roof support in a variety of applications. These applications typically involve supplemental longwall tailgate and bleeder support to eliminate the use of wood cribbing or other forms of tailgate support. Due to occasional problems with lateral shearing of primary roof bolts, a test was conducted in a western U.S. underground coal mine to determine if cable bolts (in the 7 to 10 ft. length range) could be effectively installed in lieu of standard fully grouted resin bolts to help eliminate the need for replacement of sheared roof bolts and improve roof safety in areas where horizontal shifting of strata is likely. Primary bolting with resin grouted cable bolts appears to be a viable roof control option, particularly in areas where lateral shifting is expected in the immediate roof strata or where additional strength or yield capacity is required.

• OSTI ID: 171666
• Report Number(s): CONF-9506114--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CABLES
COAL MINES
GROUTING
LEADING ABSTRACT
PERFORMANCE TESTING
RESINS
ROOF BOLTS
ROOM AND PILLAR MINING
SUPPORT PILLARS
UNDERGROUND MINING