Abstract
A mining machine has been designed and fabricated to mine coal from room and pillar operations combining high pressure waterjet cutting and mechanical fragmentation. Waterjets are used to slot the coal face with an advancing plow wedge then breaking out larger coal pieces. The machine has the following advantages:
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simply built around a disassembled longwall chock and gathering arm loader apron;
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few moving parts which are simply and inexpensively maintained;
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provides immediate roof support in the face working area;
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coal produced is larger, with resulting lower preparation cost;
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no dust is generated;
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risk of spark generation is virtually eliminated.
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References
Summers, D.A., Barker, C.R., Mazurkiewicz, M., “Experimentation in Hydraulic Coal Mining,” 1977 AIME Annual Meeting, Atlanta, Georgia, March 18, 1977.
Lavin, M.L., et al., “Design and Evaluation of a Continuous, In-Place, Hydromechanical System for Underground Coal Mining,” Final Report on Contract JO 134054 for the U.S. Bureau of Mines, Jet Propulsion Laboratory, JPL Publication 84–64, July, 1984.
Summers, D.A., Peters, J.L., “Preliminary Experimentation in Coal Cutting in the Pressure Range 500 to 2, 000 Atmospheres,” 2nd International Symposium on Jet Cutting Technology, Cambridge, U.K., paper H-2, April, 1974.
Yao, Jianchi, High Pressure Water Jets in Rock Excavation. Ph.D. Thesis, University of Missouri-Rolla, 1991.
Henkel, E., “Gewinnungs-und Strebfordertecknik,” 25th Year Review, Gluckauf, 1983, pp. 30–34.
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© 1992 Springer Science+Business Media Dordrecht
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Summers, D.A., Yao, J. (1992). Room and Pillar in-Seam Excavator and Roof Supporter (Rapiers). In: Lichtarowicz, A. (eds) Jet Cutting Technology. Fluid Mechanics and Its Applications, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2678-6_12
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DOI: https://doi.org/10.1007/978-94-011-2678-6_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5185-9
Online ISBN: 978-94-011-2678-6
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