Angle bolts control rib side at No. 4 mine, Brookwood, Alabama

Conference · Sat Oct 01 04:00:00 EDT 1983 · Prepr., Soc. Min. Eng. AIME; (United States)

OSTI ID:6080338

Gauna, M

A high seam geologic condition exists at Jim Walter Resources No. 4 mine which requires immediate rib support after a continuous miner cuts a place. High seam mining heights are typically 2.4 to 2.6 m (8 to 9 ft) and a thick rock layer is present in the upper portion of the coal rib side. The 610 m (2000 ft) mining depth at No. 4 mine induces horizontal rib line movement after excavating an entry. Horizontal rib movement greater than 30.5 cm (12 in) have been noted. When lateral movement occurs in the high seam areas, the thick rock layer, and the coal above the rock layer, become fractured and tend to roll into the entry. If not adequately supported, large rib rolls develop in the place being bolted as well as in previously mined areas which endanger men and equipment. To control this situation rib support must be installed in the roof bolting operation as the bolting crew works towards the face.

• Research Organization: Jim Walter Resources, No. 4 Mine, Brookwood, Alabama
• OSTI ID: 6080338
• Report Number(s): CONF-831009-
• Conference Information: Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Journal Volume: 83-310
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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& Peat-- Mining
58 GEOSCIENCES
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& Rock Mechanics-- (-1989)
ALABAMA
COAL DEPOSITS
COAL MINES
COAL SEAMS
DEPTH
DIMENSIONS
EQUIPMENT
FASTENERS
FEDERAL REGION IV
GEOLOGIC DEPOSITS
INSTALLATION
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MINE ROADWAYS
MINERAL RESOURCES
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MINING
MINING EQUIPMENT
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ROOF BOLTS
STRATA CONTROL
STRATA MOVEMENT
SUPPORTS
THICKNESS
TOOLS
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING
USA