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Testing of a diesel-powered impact cutting head for hard-rock mining.

Authors
Kovscek-PD; Taylor-CD; Handewith-H
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9374, 1991 Jan; :1-16
Link
NIOSHTIC No.
10010841
Abstract
The performance of a novel prototype kerf-cutting impact mining machine was evaluated under a cooperative agreement between the U.S. Bureau of Mines and ramex systems, Bellevue, Washington, while operating under conditions typical of normal tunnel entry development. Selected operating parameters were monitored concurrently to determine baseline operating conditions and to study relationships between operating parameters. Using the data obtained, the specific energy requirements of the impact mining machine were calculated and compared to specific energy requirements of tunnel boring machines cutting in rock having similar hardness. Tests results indicate that the kerf-cutting impact mining machine can provide a mechanical means for mining very hard rock that cannot be effectively mined using commercially available mechanical excavators.
Keywords
Diesel-engines; Excavation-equipment; Mining-engineering; Underground-mining; Cutting-tools; Tunneling-machines; Impact-tests; Graphs-Charts; Tests; Performance-evaluation; Prototypes; Hardness; Mining-equipment; Cutters; Tunneling-excavation; Rock-excavation
Publication Date
19910101
Document Type
IH; Report of Investigations
Fiscal Year
1991
NTIS Accession No.
PB92-110899
NTIS Price
A03
Identifying No.
RI-9374
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9374
State
WA; PA
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