Workability index for Utah coal mines

Conference · Wed Feb 01 04:00:00 EST 1984 · Prepr., Soc. Min. Eng. AIME; (United States)

OSTI ID:6331615

Singh, S P

In order to simulate the operation of coal extraction machines, a portable workability instrument has been designed. Initially, the tests were performed with the instrument on modeling material, which were followed by in situ tests on coal in underground mines. The peak and mean cutting resistance and work done to cut a unit length of coal were determined for coal as well as modeling material. In addition, rebound strength and dynamic penetration tests were also performed in situ. On the basis of the cutting characteristics of coal, a ''Workability Index'' has been developed and its role in the judicious selection of coal cutting machines has been discussed. With reference to prior works and the strength characteristics of coal, it was found that the coal plow may not be suitable for the seams under investigation and the shearer seems to be the only choice. It has been observed that peak cutting resistance and the ''Workability Index'' in the case of coal as well as modeling material depend upon compressive strength. The peak cutting resistance exhibited certain dependence upon the Schmidt rebound hardness and dynamic penetration strength of coal in situ.

• Research Organization: University of Utah, Salt Lake City, Utah
• OSTI ID: 6331615
• Report Number(s): CONF-840218-
• Conference Information: Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Journal Volume: 84-64
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
ANALOG SYSTEMS
COAL DEPOSITS
COAL MINES
COAL SEAMS
ENGINEERING
EQUIPMENT
FEDERAL REGION VIII
FUNCTIONAL MODELS
GEOLOGIC DEPOSITS
MECHANICS
MINERAL RESOURCES
MINES
MINING
MINING ENGINEERING
MINING EQUIPMENT
NORTH AMERICA
RESOURCES
ROCK MECHANICS
SIMULATION
SIMULATORS
UNDERGROUND FACILITIES
UNDERGROUND MINING
USA
UTAH