Drag pick cutting tests: A comparison between experimental and theoretical results

YAŞAR S., YILMAZ A. O.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING, vol.10, no.5, pp.893-906, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 5
  • Publication Date: 2018
  • Doi Number: 10.1016/j.jrmge.2018.02.007
  • Journal Name: JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.893-906
  • Keywords: Rock cutting mechanics, Rock cutting tests, Vertical rock cutting rig (VRCR), Cutting force, Rock cutting theories, MODE TRANSITION DEPTH, ROCK, PERFORMANCE, PREDICTION, MACHINE, FORCE
  • Karadeniz Technical University Affiliated: Yes

Abstract

This paper aims at reporting the results of a number of drag pick cutting tests on selected igneous rock samples to compare the experimentally determined maximum cutting force (FC') values with theoretically estimated ones. First, a review on theoretical rock cutting models proposed for both chisel and conical picks was presented in detail. Experimental study consists of both chisel and conical pick cutting tests in unrelieved (single-pick) cutting mode with varying cutting depths. FC' values were determined from experimental results, and theoretical models were utilized to compute FC' for all cutting conditions. Computed and experimentally determined FC' data were then compared for a referenced cutting depth. It is shown that the theoretical models might overestimate or underestimate FC' and cannot give reliable results. Finally, explanations for these mismatches were presented. (C) 2018 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V.