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Water-jet-assisted cutting. Proceedings: Bureau of Mines Open Industry Meeting, Pittsburgh, Pennsylvania, June 21, 1984.

Authors
Taylor CD; Evans RJ
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9045, 1985 Jan; :1-86
Link
NIOSHTIC No.
10004773
Abstract
Greater mining productivity requires a more efficient cutting process. The cutting force available from today's mining machines has been optimized with respect to machine size and weight. Researchers have shown that when employing water-jet-assisted cutting, bit forces and drum torques can be reduced significantly, which may allow mining machines to become lighter and more efficient. The Bureau of Mines has initiated a program to develop a water-jet-assisted rotary cutting system using the conventional bit assisted by a directed water jet operating at moderate pressures (3,000 to 10,000 psi). This water-jet-assisted cutting system has the potential to improve cutting efficiency without increasing machine horsepower or water usage (beyond what is presently used for dust control) or requiring fundamental changes in mining practice. In addition to improvements in productivity, other anticipated benefits of water-jet cutting include reduced generation of respirable dust, elimination of frictional ignitions, increased bit life, reduced fines, and fewer machine vibrations. The papers presented at this open industry meeting discuss the development of water-jet-assisted cutting technology and future application of this technology to a variety of mining techniques including roof drilling and longwall mining.
Keywords
Hydraulic jets; Underground mining; Rotary drill bits; Cutting tools; Jet drills
Publication Date
19850101
Document Type
IH; Information Circular
Editors
Taylor CD; Evans RJ
Fiscal Year
1985
NTIS Accession No.
PB86-150224
NTIS Price
Identifying No.
IC-9045
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9045
State
PA
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