Findings from disc cutting tests on alpine lithologies / Erkenntnisse aus Diskenschneidversuchen an alpinen Lithologien
Author(s): |
Martin Entacher
Klaus Lassnig |
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Medium: | journal article |
Language(s): | English, German |
Published in: | Geomechanics and Tunnelling, 2012, n. 5, v. 5 |
Page(s): | 547-556 |
DOI: | 10.1002/geot.201200041 |
Abstract: |
Full scale linear cutting tests with variable cutter spacing and penetration were conducted on different Alpine lithologies. The analysis focusses on different aspects: First, the investigation of excavated material regarding grain-size distribution curves and aspect ratios. Second, the investigation of cutting forces to better understand rock breakage and the directional dependence of cutting forces in an anisotropic rock mass. A critical view of TBM performance prediction models is also presented. Results show that the percentage of coarse grain is positively correlated with increased cutter spacing, and changing penetration did not result in significant changes of grain-size distribution. Analysis of cutting forces shows that knowledge of cutting forces enables a deeper understanding of rock breakage. Furthermore, it is shown that common performance prediction models are not able to cover certain types of rock satisfactorily. |
Keywords: |
linear cutting tests analysis of excavated material analysis of cutting forces measurement of cutting forces TBM performance prediction
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Available from: | Refer to publisher |
- About this
data sheet - Reference-ID
10067545 - Published on:
29/03/2013 - Last updated on:
13/08/2014