Heintzmann continuous longwall miner
Conference
·
OSTI ID:414939
- Heintzmann, Cedar Bluff, VA (United States)
Geologic Considerations for the Continuous Longwall Miner The mining of the thin seams allows: (1) an optimum return of the capital invested, (2) delay mining of seams at greater depth, or opening other mines, (3) a maximization of resources, (4) a prolongation of mine-lifespan. Meanwhile, deposits having seam thicknesses of about 3 feet have been proven to yield economical gains. This situation requires mining machines that possess the ability to effectively mine thin seams containing tough but plowable coal. To reach this goal, the plow systems were equipped to achieve more horsepower. The use of plows has declined due to: (1) higher weight, (2) higher purchase costs, (3) and higher repair costs. In the cutting conveying method, two objectives have to be addressed: (1) The load on the cutting machines has to be reduced by a more effective cutting-principle and a working method adjusted to the coal. (2) Cutting and conveying have to be simultaneous. Only with the CLM Miner, can mining rates be advanced in thin seams.
- OSTI ID:
- 414939
- Report Number(s):
- CONF-960663--
- Country of Publication:
- United States
- Language:
- English
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