Title

Radial Pick Cutting Performance in Dry and Saturated Sandstone

Editor(s)

Hanninen, P.

Abstract

To investigate the differences in the radial drag pick cutting performance in dry and saturated sandstone, a suite of linear rock cutting test was performed using linear rock cutting machine (LRCM). Experimental results of 50 data passes, incorporating 350 data cuts were used to compute cutting, normal and side forces required for determination of other performance related parameters. Although the forces required to cut the dry and saturated rock were in congruence for most of the spacing and depths of cut combinations; but the overall averaged cutting and normal forces for saturated rock cutting were found to be 9.9% and 9.4% respectively higher than the dry rock cutting. The increase in the overall averaged forces was attributed to strength variability of one of the saturated block affecting the overall forces. The side forces experienced a negligible drop in saturated rock cutting. An increase of 28% and 9% in the actual and nominal specific energy values respectively was also recorded when cutting saturated rock as compared to the dry rock cutting. The increase in saturated rock specific energy is attributed to production of large amount of fines and few large sized chips directly contributing towards increase in specific energy. The optimum s/d ratio for dry rock tests was found to lie between 6 and 8 whereas for saturated rock cuts this value lied between 5 and 9.

Meeting Name

SME Annual Meeting and Exhibit (2012; Feb. 19-22, Seattle, WA)

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Cutting Performance; Drag-Pick Cutting; Dry Rocks; Normal Forces; Radial Picks; Rock Cutting; Saturated Rock; Saturated Sandstones; Side Force; Specific Energy; Strength Variability; Cutting Tools; Machinery; Sandstone; Rocks

International Standard Book Number (ISBN)

9781622760893

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Society of Mining Engineers, All rights reserved.

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