Evaluation of the coal strength for pillar calculations

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:7042802

Unrug, K F; Thompson, E; Nandy, S

The method of coal pillar design involves primarily two aspects, the geometry of the pillar and the strength of the coal. However, the strength of the coal has to be emphasized with respect to the entire pillar dimension rather than isolated strength values of coal samples taken and measured from different locations. The presently applied pillar design systems do not specify clearly what the coal sample strength really represents. The intention of this paper is to introduce the concept of seam strength as opposed to the current practice of using coal strength as a prime design criteria in the formulation of pillar calculations.

• OSTI ID: 7042802
• Report Number(s): CONF-851054-
• Resource Relation: Conference: Society of Mining Engineers fall meeting, Albuquerque, NM, USA, 16 Oct 1985
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
MECHANICAL TESTS
COAL SEAMS
COMPRESSION STRENGTH
KENTUCKY
ROOM AND PILLAR MINING
SUPPORT PILLARS
DESIGN
CALCULATION METHODS
COMPRESSION
GEOMETRY
LAYERS
CARBONACEOUS MATERIALS
COAL DEPOSITS
ENERGY SOURCES
FEDERAL REGION IV
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MATERIALS
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MATHEMATICS
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MINERAL RESOURCES
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NORTH AMERICA
RESOURCES
TESTING
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USA
012031* - Coal
Lignite
& Peat- Underground Mining- Strata Mechanics & Control- (1987-)
010600 - Coal
Lignite
& Peat- Properties & Composition