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Correlation of Laboratory Cutting Data With Tunnel Boring Machine Performance.
NTIS: PB 233 415 :19 pages
The Bureau of Mines conducted rock-cutting experiments under constant normal force and constant penetration in an effort to correlate laboratory data with those obtained in the field. Both independent and interacting groove spacing regions were studied, and optimum and critical cutter spacings were determined. For the laboratory work, the effects of specific energy, muck weight, groove depth, cutting coefficient, and size distribution of the muck for both independent and interacting grooves were studied. For field operations, forward thrust, torque, advance rate, and muck size distribution were the parameters studied. Satisfactory correlation is obtained between laboratory cutting results and field performance data.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 233 415
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division