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Evaluation of Water-jet-assist Mechanical Cutting of Oil Shale.

Kogelmann-WJ; Virgona-JE; Thimons-ED; Weakly-LA
Proc 3rd Ann Oil Shale Tar Sand & Mild Gas Contr Mtg US DOE DOE/METC-88-6098 '88 Pp 306-21 :306-21
The U.S. Department of Energy's Grand Junction Projects Office has entered into a $1.5 million cooperative agreement with Alpine Equipment Corp./Astro International Corp. of State College, Pennsylvania, for the evaluation of water-jet-assisted mechanical cutting of oil shale under actual mining conditions. The 24-month, three-phase technology development project began in February 1988, and the project costs will be equally shared between Alpine and the DOE. Alpine Equipment Corp. has designed and will assemble and field test a commercial-sized, water-jet-assisted, mechanized mining machine. Field testing of the machine will be conducted at Exxon's Colony Pilot Mine located in the Piceance Basin of western Colorado. Additional support will be provided by the oil shale companies through the Colorado Mining Association and the U.S. Bureau of Mines Pittsburgh Research Center. The physical characteristics of oil shale (a dolomitic limestone containing kerogen) make conventional mechanized production mining methods impractical. Excessive machine vibration, high pick wear rates, and excessive dust generation make current mechanical production excavation methods less efficient and more costly than the traditional drill-and-blast methods. However, conventional drill-and-blast methods have limitations imposed by excessive rock damage and regulatory considerations. Improved mechanical production excavation technologies could make oil shale more competitive with other energy sources. Water-jet-assisted roadheader field tests on coal have shown that high-pressure water jets cool the cutt
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OP 91-89
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Proc 3rd Ann Oil Shale, Tar Sand, & Mild Gas Contr Mtg; US DOE, Doe/metc-88-6098,'88, Pp 306-21